CN116211367A - Vascular suturing device and vascular suturing system - Google Patents

Abstract

The invention relates to a vascular suture device and a vascular suture system, wherein the vascular suture device comprises a wire foot component, a push handle component and a feedback wire, the wire foot component comprises a wire foot main body, and connecting sleeves are arranged on two sides of the wire foot main body; the wall of the connecting sleeve is provided with a window and a baffle, the outer side of the far end of the baffle is provided with a cutting part, and the cutting part is opposite to the inner wall of the connecting sleeve; the far end of the push handle component is provided with a connecting needle which can be clamped with the connecting sleeve; the distal end of the feedback line is provided with a bulge part which is arranged in the connecting sleeve, and the proximal end of the feedback line extends out from the window; the connecting pin can penetrate the connecting sleeve and radially press the blocking piece so that the cutting part is embedded into the window to cut off the feedback line. Through the invention, a doctor can judge whether the front needle and the rear needle are inserted into the corresponding connecting sleeve by pulling the feedback wire at the tail part of the proximal end of the suture instrument main body when pressing the push handle assembly, so that the success rate of vascular suture is improved.

Description

Vascular suturing device and vascular suturing system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a vascular suturing device and a vascular suturing system suitable for cardiovascular interventional therapy.

Background

Along with the rapid development of medical intervention technology, the medical intervention device has the characteristics of small wound, short bedridden time of patients, rapid recovery and the like, so the medical intervention device is widely applied to various interventional operations clinically. Because the interventional operation is mostly to make a minimally invasive incision on an arteriovenous vessel of a human body, the interventional instrument enters a lesion part of a patient through the vessel to perform operation treatment, and the incision is mostly sutured by using a ProGlide vessel suture device of Abbott after the operation. The ProGlide vascular suture device needs to press down the pushing handles in the use process, so that the front needle head and the rear needle head are respectively inserted into the corresponding sleeves, and then the pushing handles are pulled out, thereby driving the track to pass through the fisher knot and further achieving the purpose of suturing vascular incisions. However, when the push handle is pressed down, the contact condition of the front needle and the rear needle with the sleeve cannot be directly seen, and if the suturing operation is continued, the vascular suturing failure can be caused.

For the above reasons, how to design a vascular stapler with an operation feedback function is a problem to be solved at present.

Disclosure of Invention

The invention discloses a vascular suturing device and a vascular suturing system, and aims to solve the technical problems in the prior art.

The invention adopts the following technical scheme:

in one aspect, the present application discloses a vascular stapler comprising:

-a stitch assembly comprising a stitch body, each of the two sides of the stitch body being provided with a connecting sleeve;

the wall of the connecting sleeve is provided with a window and a baffle plate, the baffle plate extends from the proximal end of the window to the radial inward and to the distal end, the outer side of the distal end of the baffle plate is provided with a cutting part, and the cutting part is opposite to the inner wall of the connecting sleeve;

-a push handle assembly, at the distal end of which a connecting needle is provided, which can be snapped with a connecting sleeve;

-a feedback line having a distal end provided with a bulge disposed in the connection sleeve, a proximal end of the feedback line extending out of the window;

the connecting pin can penetrate the connecting sleeve and radially press the blocking piece so that the cutting part is embedded into the window to cut off the feedback line.

As the preferable technical scheme, the wall of the connecting sleeve is provided with a pair of windows and baffle plates, and the windows and the baffle plates are symmetrically arranged along the circumferential direction.

As a preferable technical scheme, the distal end of the connecting needle comprises a boss part and a positioning concave part; the boss part is used for extruding the baffle plate when penetrating through the connecting sleeve, and enabling the cutting part to cut off the feedback line; the positioning concave part is used for providing an accommodating space for resetting the baffle plate and enabling the baffle plate to block the boss part.

As a preferable embodiment, the maximum outer diameter of the boss portion is smaller than the inner diameter of the connection sleeve.

As a preferable embodiment, the minimum outer diameter of the positioning concave portion is smaller than the minimum distance between the pair of the blocking pieces.

As a preferred technical solution, the axial length of the baffle is not greater than the axial length of the window.

As a preferred solution, the flap comprises a resilient material having a shape memory function or a biased setting.

As a preferable technical scheme, the distal ends of the pair of baffle plates are respectively provided with a cutting part, and each cutting part is correspondingly provided with a feedback line;

alternatively, only the distal end of one of the pair of blades is provided with a cutting portion, and only the cutting portion is provided with a feedback line.

As a preferred solution, the cutting portion has a wedge shape extending towards the inner wall of the connecting sleeve, the distance between the cutting portion and the inner wall of the connecting sleeve being larger than the diameter of the feedback line.

As a preferred solution, the bulge diameter is larger than the distance between the cutting portion and the inner wall of the connecting sleeve.

As the preferable technical proposal, the vascular suture device also comprises a suture device main body, a proximal pipe fitting and a distal pipe fitting which are arranged from the proximal end to the distal end in sequence;

the proximal end of the pushing handle component is axially penetrated in the stitching instrument main body; the distal end of the push handle component is arranged in the proximal pipe fitting in a penetrating way, and the wire foot component is arranged between the proximal pipe fitting and the distal pipe fitting.

As a preferable technical scheme, the connecting needle comprises a front needle and a rear needle; the connecting sleeve comprises a front needle connecting sleeve and a rear needle connecting sleeve; the distal ends of the front needle connecting sleeve and the rear needle connecting sleeve are connected with each other through connecting wires; the feedback line includes a front needle feedback line and a rear needle feedback line.

As a preferable technical scheme, the distal end of the front needle is provided with a suture knot and an axis, and the distal end of the rear needle is provided with a track.

As a preferred technical scheme, 2 front needle feedback lines and/or rear needle feedback lines are provided.

As a preferable technical scheme, the feedback wire is penetrated in the proximal tube body and penetrated out from the proximal end of the suture instrument main body.

As a preferable technical scheme, the suture device main body is provided with a limiting device at a position near the penetrating position of the proximal end of the feedback line, and the limiting device is used for fixing the proximal end of the feedback line.

In a second aspect, the present application also provides a vascular suturing system comprising a vascular stapler as defined in any one of the preceding claims, further comprising a suture adjuster.

The technical scheme adopted by the invention can achieve the following beneficial effects:

(1) The invention mainly provides a vascular stitching instrument, wherein a cutting part and a feedback line are arranged in a connecting sleeve at two ends of a line foot assembly, the cutting part is arranged at the outer side of a baffle in the connecting sleeve, one end of the feedback line is fixed in the connecting sleeve, and the other end of the feedback line extends outwards from a window of the connecting sleeve until reaching the proximal end of a stitching instrument main body and penetrating out; when the connecting needle (comprising a front needle and a rear needle) in the stitching instrument is inserted into the connecting sleeve, the baffle plate is radially extruded, so that the cutting part cuts off the feedback line, and a doctor can extract the feedback line from the proximal end of the stitching instrument main body; through this structure for doctor can judge whether front needle and rear needle insert in corresponding connecting sleeve when pushing down pushing away the handle subassembly, thereby realize vascular suturing's success rate.

(2) In a preferred embodiment, the blades in each connecting sleeve are provided with cutting parts, each cutting part is corresponding to one feedback wire, and after the push handle assembly is pressed down, all feedback wires can be extracted only after the current needle and the rear needle are combined with the corresponding connecting sleeve, so that the accuracy and success rate of suturing are further increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments are briefly described below to form a part of the present invention, and the exemplary embodiments of the present invention and the description thereof illustrate the present invention and do not constitute undue limitations of the present invention. In the drawings:

FIG. 1 is a schematic structural diagram of an operation feedback structure in a preferred embodiment disclosed in example 1 of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic view of the structure of the connection sleeve and the feedback line in a preferred embodiment of the invention disclosed in example 1;

FIG. 4 is a perspective view of a vascular stapler according to a preferred embodiment of the present disclosure disclosed in example 2;

FIG. 5 is a partially exploded view of a vascular stapler according to a preferred embodiment of the present disclosure disclosed in example 2;

FIG. 6 is a partially exploded view of a vascular stapler according to a preferred embodiment of the present disclosure disclosed in example 2;

FIG. 7 is a partial enlarged view at B in FIG. 6;

FIG. 8 is a schematic view of the structure of the yarn foot assembly, the feedback yarn and the connecting needle according to the preferred embodiment of example 2 of the present invention;

FIG. 9 is a cross-sectional view of a preferred embodiment of the present invention disclosed in example 2 with a wire foot assembly, feedback wire and connecting needle;

reference numerals illustrate:

a stapler body 10, a wrench 11, and a quick scissor opening 12; a push handle assembly 20, a connecting needle 21, a boss 211, a positioning recess 212, a front needle 22, and a rear needle 23; the stitch assembly 30, the connecting sleeve 31, the front needle connecting sleeve 311, the rear needle connecting sleeve 312, the baffle 32, the cutting part 321, the window 33, the connecting wire 34 and the stitch body 35; a suture 40; feedback line 50, front needle feedback line 51, rear needle feedback line 52; proximal tube 60, distal tube 70.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. In the description of the present invention, it should be noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.

It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the following examples. "proximal" refers to the end proximal to the operator and "distal" refers to the end distal to the operator.

To solve the problems in the prior art, embodiments of the present application provide a vascular stapler including a wire foot assembly 30, a push handle assembly 20, and a feedback wire 50; the stitch assembly 30 comprises a stitch body 35, and connecting sleeves 31 are respectively arranged at two sides of the stitch body 35; the wall of the connecting sleeve 31 is provided with a window 33 and a baffle plate 32, the baffle plate 32 extends from the proximal end of the window 33 to the radial inward and the distal end, the outer side of the distal end of the baffle plate 32 is provided with a cutting part 321, and the cutting part 321 is opposite to the inner wall of the connecting sleeve 31; a connecting needle 21 is arranged at the distal end of the push handle assembly 20, and the connecting needle 21 can be clamped with a connecting sleeve 31; the distal end of feedback line 50 is provided with a bulge disposed in connection sleeve 31, and the proximal end of feedback line 50 extends out of window 33; the connection pin 21 can penetrate the connection sleeve 31 and radially press the blocking piece 32 so that the cutting portion 321 is embedded in the window 33 to cut off the feedback line 50.

Example 1

Along with the great application of interventional operations, whether the operation can quickly and effectively stop bleeding becomes an important factor related to success or failure of the operation. Due to the use of intra-operative anticoagulant and antiplatelet drugs, doctors have traditionally closed the artery/vein by means of various external pressure approaches, including direct compression, sandbag or mechanical clip assistance, etc.; in recent years, more and more doctors suture large and medium blood vessels by using a blood vessel suture device after a patient is involved in operation so as to promote hemostasis and quick recovery of wounds; the vascular suture device with the highest use ratio belongs to a Proglide vascular suture device of Abbott, has the advantages of reducing the complication rate, shortening the patient braking and hospitalization time and the like compared with incised suture, and can be widely applied to related operations in the heart fields such as coronary intervention, radio frequency ablation, structural heart diseases, extracorporeal circulation and the like.

Although the Proglide vascular stapler has many advantages, due to its relatively fine structure, the connecting needle at the distal end of the push handle assembly does not necessarily penetrate exactly into the connecting sleeve to be engaged therewith when the push handle assembly is pressed, and it is predicted that the suture thread cannot be mutually engaged to suture the wound of the blood vessel when the connecting needle is not properly engaged with the connecting sleeve, thereby causing failure of vascular suturing.

For the above reasons, the present embodiment provides an operation feedback structure suitable for various vascular staplers requiring the connection needle 21 and the connection sleeve 31 to be engaged with each other.

Referring to fig. 1 to 3, the operation feedback structure includes a connection sleeve 31, a connection needle 21 and a feedback line 50, wherein one end of the connection sleeve 31 is open, one end is closed, the connection needle 21 can penetrate into the connection sleeve 31 and enable the connection sleeve 31 and the connection needle to be clamped with the connection sleeve, one end of the feedback line 50 is expanded, and the other end of the feedback line penetrates out from the side wall of the connection sleeve 31 and extends outwards.

It should be understood by those skilled in the art that the connecting sleeve 31 in this embodiment is a sleeve disposed at two ends of the stitch assembly 30 of the vascular suture device, a connecting wire 34 is disposed in one closed end of the sleeve, and two ends of the connecting wire 34 are fixedly connected with two ends of the two sleeves respectively; the connecting needle 21 is a front needle 22 and/or a rear needle 23 at the distal end of the push handle assembly 20, the front needle 22 and the rear needle 23 can respectively penetrate into corresponding sleeves by pressing the push handle assembly 20, the front needle 22 penetrates into a suture knot (preferably a fisher knot) of one suture 40, and the rear needle 23 is arranged in parallel with the other suture 40, as shown in fig. 7.

Referring to fig. 3, preferably, the wall of the connecting sleeve 31 is provided with at least two windows 33, the two windows 33 are symmetrically distributed along the circumferential direction of the wall, and the length direction of the windows 33 is consistent with the length direction of the connecting sleeve 31; preferably, window 33 is sized to allow feedback line 50 to pass therethrough.

Preferably, the proximal end of each window 33 is provided with a baffle 32, the baffle 32 extending radially inwards and distally from the proximal end of the window 33 and presenting an angle of less than 90 ° with the wall of the connecting sleeve 31; in a preferred embodiment, the size of the flap 32 is slightly smaller than the size of the window 33, and the flap 32 is made of a shape memory metal or a spring-back material in a biased arrangement; when the connecting needle 21 penetrates into the connecting sleeve 31, the two blocking pieces 32 are radially extruded to expand outwards, the size of the blocking pieces is smaller than that of the window 33, the blocking pieces 32 can be bent to the same curved surface with the cylinder wall so that the connecting needle 21 can pass through, and the blocking pieces 32 are reset to press the distal end of the connecting needle 21 to prevent the distal end of the connecting needle from being separated from the connecting sleeve 31, so that the clamping connection between the connecting sleeve 31 and the connecting needle 21 is realized.

In a preferred embodiment, when the blocking piece 32 is extruded by the connecting needle 21 and is bent to be in the same curved surface with the wall of the connecting sleeve 31, the inner bending radian of the blocking piece 32 should be matched with the radian of the wall of the connecting sleeve to ensure that a smooth channel is formed in the wall of the connecting sleeve so as to facilitate the connecting needle 21 to pass through.

In a preferred embodiment, the baffle 32 is made of the same material as the connecting sleeve 31 for enhancing structural integrity and structural strength, or the connecting sleeve 31 is subjected to processes such as stamping, laser cutting or bending to form the baffle 32. Those skilled in the art will appreciate that other machining processes may alternatively be used to provide the flap 32 with the ability to bend and reposition.

Preferably, the distal outer side of the blocking piece 32 is provided with a cutting portion 321, the cutting portion 321 having a substantially wedge-shape or a blade-shape, the cutting portion 321 being opposed to the inner wall of the connecting sleeve 31. In a preferred embodiment, in order to ensure that the blocking piece 32 can be bent to be in the same curved surface as the wall of the connecting sleeve 31 when being pressed by the connecting needle 21, the axial length of the blocking piece 32 should be slightly smaller than that of the window 33, and more preferably, the blocking piece 32 can be precisely matched with the size of the window 33 when being pressed by the connecting needle 21 to deform.

The feedback wire 50 is matched with the cutting part 321, the distal end of the feedback wire 50 is expanded to form an expansion part, and the rest part is in a common thin line shape and penetrates outwards from the window 33; preferably, the bulging part can be formed by knotting the feedback wire 50, and a limit structure such as a clamping ring can be additionally added; preferably, the bulging diameter of the feedback line 50 is larger than the distance between the cutting portion 321 and the inner wall of the connection sleeve 31, and the diameter of the remaining portion is smaller than the distance between the cutting portion 321 and the inner wall of the connection sleeve 31, so as to ensure that one end of the feedback line 50 can be fixed in the connection sleeve 31 and the remaining portion can pass out of the window 33; more preferably, the feedback wire 50 passes out of the window 33 and has a certain gap with the cutting portion 321, so as to avoid the feedback wire 50 from being accidentally cut before the connection needle 21 does not pass into the connection sleeve 31.

Preferably, the feedback line 50 is further provided with a limiting structure at a position after penetrating out of the window 33, and the limiting structure is slightly expanded, so that free movement of the feedback line 50 can be avoided to a certain extent; more preferably, limiting structures are arranged on two sides of the feedback wire 50 penetrating out of the window 33, so that the feedback wire 50 cannot be cut off due to free movement. In a preferred embodiment, the spacing structure is also knotted from feedback wire 50.

In a preferred embodiment, feedback line 50 is made of a structurally strong and easily cut material, and may be made of a material such as polyester, instead of a braided wire (not easily cut).

In another preferred embodiment, the baffle plates 32 arranged on the inner wall of the connecting sleeve 31 are provided with cutting parts 321, and each window 33 is internally provided with a feedback wire 50; when the connecting needle 21 penetrates into the connecting sleeve 31, only if both the two feedback wires 50 are cut off, the connecting needle 21 can be correctly clamped with the corresponding connecting sleeve 31, so as to further increase the accuracy and success rate of the suturing.

As shown in fig. 2, it is preferable that the distal end of the connection needle 21 includes a boss portion 211 and a positioning recess 212, wherein the boss portion 211 may be used to press the blocking pieces 32 on both sides when the connection needle 21 is inserted into the connection sleeve 31, so that the distal end of the connection needle 21 is smoothly inserted into the connection sleeve 31, and at the same time, the cutting portion 321 of the distal end of the blocking piece 32 is moved toward the inner wall of the connection sleeve 31 and is finally precisely matched with the window 33 to cut off the feedback line 50, thereby enabling a doctor to withdraw the feedback line 50, proving that the connection needle 21 is correctly clamped with the connection sleeve 31; the positioning recess 212 is used for providing a movable and accommodating space for the reset of the blocking piece 32, and can be blocked against the proximal end of the boss 211 after the reset of the blocking piece 32, so as to prevent the connection needle 21 from being separated from the connection sleeve 31.

In a preferred embodiment, the boss portion 211 is generally conical, arrow-shaped, or the like; the diameter of the distal end is smaller, so that the connecting sleeve 31 can be conveniently penetrated; the proximal end has a larger diameter and is in an annular plane, and can be matched with the baffle plate 32 to complete the clamping connection between the connecting needle 21 and the connecting sleeve 31.

It will be appreciated by those skilled in the art that when two feedback lines 50 are provided in the connecting sleeve 31, two bulging portions are provided therein, and the axial length of the boss portion 211 is reduced accordingly, which is smaller than the distance from the outer bulging portion to the plane of the pair of baffle plates 32.

In a preferred embodiment, the positioning recess 212 is substantially conical, and the outer contour of the positioning recess 212 is matched with the blocking piece 32, so that after the boss 211 passes through the blocking piece 32, the blocking piece 32 can reset in the positioning recess 212, and the blocking piece 32 can abut against the proximal end of the boss 211. Preferably, the minimum outer diameter of the positioning recess 212 is smaller than the minimum distance between the pair of the blocking pieces 32.

In this embodiment, the above-mentioned operation feedback structure can be applied to the stitch assembly 30 of the vascular suture device, when a doctor uses the vascular suture device to suture the blood vessel, he presses the push handle assembly 20, the connecting needle 21 at the distal end of the push handle assembly can penetrate into the connecting sleeve 31 of the stitch assembly 30, when the connecting needle 21 is correctly clamped with the corresponding connecting sleeve 31, the cutting portion 321 in the feedback structure can cut off the feedback wire 50, at this time, if he can pull the feedback wire 50 out of the vascular suture device, he can prove that the connecting needle 21 is correctly matched with the stitch assembly 30, and if a certain feedback wire 50 cannot be pulled out of the vascular suture device, he can prove that the corresponding connecting needle 21 is not inserted into the corresponding connecting sleeve 31, and at this time, a new vascular suture device needs to be adjusted or replaced.

Example 2

This embodiment provides a vascular stapler including the operation feedback structure described in embodiment 1, so that the respective features in embodiment 1 described above are naturally inherited in this embodiment.

Referring to fig. 4-9, the main structure of the vascular suture device comprises a suture device body 10, a proximal tube 60, a distal tube 70, a wire foot assembly 30, a push handle assembly 20 and a feedback wire 50, and the operation feedback structure in embodiment 1 is composed of the wire foot assembly 30, a part of the structure in the push handle assembly 20 and the feedback wire 50, respectively.

Preferably, the suture instrument main body 10 is sequentially connected with the proximal tube 60 and the distal tube 70, the proximal end of the push handle assembly 20 is axially penetrated in the suture instrument main body 10, the distal end of the push handle assembly 20 is penetrated in the proximal tube 60, and the stitch assembly 30 is arranged between the proximal tube 60 and the distal tube 70.

Preferably, the suture instrument main body 10 is provided with a wrench 11, the wrench 11 is connected with the thread residue assembly 30 through a linkage, and when the wrench 11 is lifted, the thread residue assembly 30 can rotate at a certain angle; it should be understood by those skilled in the art that the structure of the suture device body 10 in this embodiment is identical to that of the Proglide vascular suture device, and the linkage and mating relationship between the suture device body 10 and the stitch assembly 30 is identical to that of the prior art, and will not be repeated here.

Referring to fig. 7 to 9, the stitch assembly 30 is preferably in a shape of a substantially flat handle, and connecting sleeves 31 are respectively arranged at two ends of the stitch assembly 30, namely a front needle connecting sleeve 311 and a rear needle connecting sleeve 312, and distal ends of the connecting sleeves 31 are connected by the same connecting wire 34; in the initial state, the longitudinal direction of the leg assembly 30 is aligned with the longitudinal direction of the proximal tube 60, and when the wrench 11 is lifted, the leg assembly 30 can be rotated approximately 90 ° clockwise so that the opening directions of the front needle connecting sleeve 311 and the rear needle connecting sleeve 312 are both toward the proximal end.

It will be appreciated by those skilled in the art that the front needle coupling sleeve 311 and the rear needle coupling sleeve 312 at both ends of the stitch assembly 30 are not arranged in parallel, but are arranged at an angle, and that the specific angle is matched to the angle of the coupling needle 21 at the distal end of the push handle assembly 20, as shown in fig. 9.

Preferably, two supporting rods are arranged in the push handle assembly 20, and connecting needles 21, namely a front needle 22 and a rear needle 23, are arranged at the distal ends of the two supporting rods; in the initial state, the front needle 22 and the rear needle 23 conform to the extending direction of the proximal connecting tube and are placed in the proximal connecting tube, when the push handle assembly 20 is pressed down, the front needle 22 and the rear needle 23 extend distally, and are opened at a certain angle and are respectively clamped in the front needle connecting sleeve 311 and the rear needle connecting sleeve 312.

Preferably, the front needle 22 and one strut are arranged in a suture knot of one suture 40 (axis) in a penetrating way, the rear needle 23 is arranged in parallel with the other strut, and the rear needle 23 is fixed with the other suture 40 (track); when the push handle assembly 20 is pressed down, the front needle 22 is clamped with the front needle connecting sleeve 311, the rear needle 23 is clamped with the rear needle connecting sleeve 312, and when the push handle assembly 20 is pulled out of the suture instrument main body 10, the front needle 22 and the front needle connecting sleeve 311 drive the connecting wire 34, the connecting wire 34 drive the rear needle connecting sleeve 312 and the track, so that the track can penetrate into the axial line knot to complete the initial operation of vascular suture.

Those skilled in the art will appreciate that the operation of the vascular stapler and the manner of cooperation of the various structures are the same as those of the Proglide vascular stapler and will not be described in detail herein.

Preferably, the front needle connecting sleeve 311 and the rear needle connecting sleeve 312 are respectively provided with a feedback line 50 and a cutting part 321 matched with the feedback lines, the feedback lines 50 comprise a front needle feedback line 51 and a rear needle feedback line 52, and the two feedback lines 50 penetrate through the proximal tube body and extend to the proximal opening of the suture instrument main body 10 to penetrate out; the front needle 22 and the rear needle 23 respectively penetrate into the front needle connecting sleeve 311 and the rear needle connecting sleeve 312, the front needle feedback line 51 and the rear needle feedback line 52 are respectively cut off by the cutting part 321, and a doctor can respectively withdraw the front needle feedback line 51 and the rear needle feedback line 52 to prove that the connecting needle 21 is correctly matched with the stitch assembly 30, and if a certain feedback line 50 cannot be pulled out from the vascular suture device, the corresponding connecting needle 21 is proved not to be inserted into the corresponding connecting sleeve 31, and at the moment, a new vascular suture device needs to be adjusted or replaced.

In a preferred embodiment, two feedback wires 50 are respectively disposed in the front needle connecting sleeve 311 and the rear needle connecting sleeve 312, each feedback wire 50 corresponds to the cutting portion 321 of one of the blocking pieces 32, and after the physician presses the push handle assembly 20, only when both feedback wires 50 corresponding to each connecting needle 21 can be pulled out, the physician can prove that the connecting needle 21 is correctly matched with the stitch assembly 30, and if a certain feedback wire 50 cannot be pulled out, it is proved that the corresponding connecting needle 21 is not inserted or is not completely inserted into the corresponding connecting sleeve 31, and at this time, the vascular stapler needs to be adjusted.

In a preferred embodiment, stapler body 10 is provided with a stop means near the proximal exit of feedback wire 50, which can secure feedback wire 50, ensure that feedback wire 50 is under tension when cut, and avoid undesirable movement of feedback wire 50 due to slackening, making cutting portion 321 difficult to sever. Alternatively, the stop means may be provided as a clip-like structure, a coiled sheet-like structure or other structure capable of securing the proximal end of the feedback wire 50; preferably, the stop means may be provided in one or more.

Example 3

This embodiment provides a vascular suturing system, including a vascular stapler and a suture adjuster, and the various features already included in embodiments 1 and 2 are naturally inherited in this embodiment.

Preferably, the suture adjuster in this embodiment is identical in construction to the suture adjuster in the Proglide vascular suture system and is of prior art, and the specific construction thereof is not described in detail in this embodiment.

Preferably, the stapler body 10 of the vascular stapler is further provided with a quick scissor opening 12 for severing the suture 40.

In this embodiment, the vascular suturing system is used as follows:

taking the suture of the femoral artery as an example, firstly, determining the puncture point on the femoral artery from the femoral artery radiography in the guide sheath, preventing the suture 40 from being beaten to the rear wall of the blood vessel and the possible vascular front and rear wall from being sutured, perspectively evaluating the diameter, calcification and distortion of the femoral artery and whether the arterial wall has interlayer or other vascular diseases, placing the guide wire through the guide sheath, pressing the inguinal position for hemostasis when withdrawing the sheath, then placing the vascular suture device along the guide wire until the guide wire quick exchange port is close to the skin surface, removing the guide wire before the guide wire quick exchange port enters the body, continuing pushing the instrument until the continuous pulsatile blood flow is seen at the marking cavity, stopping pushing the instrument, keeping the vascular suture at a 45-degree angle, lifting the wrench 11 on the suture device main body 10, opening the wire foot assembly 30, gently retracting the instrument, enabling the wire foot assembly 30 to prop against the arterial wall, and stopping or obviously reducing the blood return if the wire foot assembly 30 is positioned correctly.

The instrument is stabilized and held, the push handle assembly 20 is pressed until the push handle assembly 20 is tightly contacted with the proximal end of the suture instrument main body 10, after the push handle assembly 20 is confirmed to be tightly contacted with the instrument under direct view, the front needle 22 is proved to be clamped with the front needle 22 connecting sleeve, the rear needle 23 is proved to be clamped with the rear needle 23 connecting sleeve, at the moment, if the front needle feedback line 51 and the rear needle feedback line 52 can be pulled out, the connecting needle 21 and the connecting sleeve 31 are proved to be correctly clamped, the next operation can be performed, otherwise, the push handle assembly 20 is required to be adjusted or the vascular suture instrument is required to be replaced.

The push handle assembly 20 and suture 40 are fully withdrawn from the stapler body 10 until the suture 40 is cinched, the suture 40 is cut using the quick scissor edge 12, the instrument is loosened, the wrench 11 is then pushed back to the original position, the stitch assembly 30 is retracted, the instrument is withdrawn until the guidewire quickly marks the opening out of the skin, the two sutures 40 are simultaneously pulled from the proximal portion, and the distal end of the suture 40 is removed from the proximal tube 60.

One suture 40 is wound on the index finger of the left hand, the other suture 40 is slightly pulled along the coaxial direction of the muscle, the other suture 40 is placed between the thumb and the index finger of the left hand, an operating handle on the suture regulator is opened, the two sutures 40 are simultaneously placed on a suture 40 window at the far end of the suture regulator, the operating handle is loosened to place the sutures 40, the knot is pushed forward, after the suture regulator is sent to the position, the axis in the two sutures 40 is slightly pulled to lock the knot, the suture regulator is withdrawn from the puncture channel, and the hemostatic effect is tested by letting the patient cough or leg curl.

Once hemostasis is confirmed, the suture 40 is cut using scissors on the suture regulator, both sutures 40 are placed in the suture regulator and pushed up to the arterial surface with tension of the suture 40 maintained, the red scissors spanner 11 is pulled back to cut the suture 40, and the suture 40 is withdrawn with the spanner 11 closed, completing suturing of the blood vessel.

It should be understood by those skilled in the art that the operation method of the suture adjuster is matched with its own structure, and the structure and operation method are already disclosed, so that the matching relationship between the structures is not described in detail.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims (17)

1. A vascular stapler, comprising:

-a stitch assembly comprising a stitch body provided with connecting sleeves on both sides respectively;

the wall of the connecting sleeve is provided with a window and a baffle, the baffle extends radially inwards from the proximal end of the window and extends distally, the outer side of the distal end of the baffle is provided with a cutting part, and the cutting part is opposite to the inner wall of the connecting sleeve;

-a push handle assembly provided with a connecting needle at a distal end thereof, the connecting needle being capable of being snapped with the connecting sleeve;

-a feedback line, the distal end of the feedback line being provided with a bulge, the bulge being provided in the connection sleeve, the proximal end of the feedback line extending out of the window;

the connecting needle can penetrate the connecting sleeve and radially squeeze the baffle plate, so that the cutting part is embedded into the window to cut off the feedback wire.

2. The vascular stapler according to claim 1, wherein the wall of the connecting sleeve is provided with a pair of windows and the blocking pieces, and the windows and the blocking pieces are symmetrically arranged along the circumferential direction.

3. The vascular stapler of claim 2, wherein the distal end of the connecting needle includes a boss portion and a positioning recess; the boss part is used for extruding the baffle plate when penetrating the connecting sleeve, and enabling the cutting part to cut off the feedback line; the positioning concave part is used for providing an accommodating space for resetting the baffle plate and enabling the baffle plate to clamp the boss part.

4. The vascular stapler of claim 3, wherein a maximum outer diameter of the boss portion is smaller than an inner diameter of the connection sleeve.

5. The vascular stapler of claim 3, wherein a minimum outer diameter of the positioning recess is less than a minimum distance between a pair of the flaps.

6. The vascular stapler of claim 2, wherein an axial length of the flap is no greater than an axial length of the window.

7. The vascular stapler of claim 6, wherein the flap comprises a resilient material having a shape memory function or a biased setting.

8. The vascular stapler of claim 7, wherein the distal ends of a pair of the blades are each provided with the cutting portion, and each of the cutting portions is provided with a corresponding one of the feedback lines;

or, the cutting part is arranged at the distal end of only one of the pair of baffle plates, and the feedback line is correspondingly arranged only at the cutting part.

9. The vascular stapler of claim 7, wherein the cutting portion has a wedge shape extending toward the inner wall of the connection sleeve, a distance between the cutting portion and the inner wall of the connection sleeve being greater than a diameter of the feedback line.

10. The vascular stapler of claim 1, wherein the bulge diameter is greater than a distance between the cutting portion and the inner wall of the connecting sleeve.

11. The vascular stapler of any one of claims 1-10, further comprising a stapler body, a proximal tube, and a distal tube disposed in sequence from proximal to distal;

the proximal end of the pushing handle component axially penetrates through the stitching instrument main body; the distal end of the push handle component is arranged in the proximal pipe fitting in a penetrating mode, and the thread foot component is arranged between the proximal pipe fitting and the distal pipe fitting.

12. The vascular stapler of claim 11, wherein the connecting needle comprises a front needle and a rear needle; the connecting sleeve comprises a front needle connecting sleeve and a rear needle connecting sleeve; the distal ends of the front needle connecting sleeve and the rear needle connecting sleeve are connected with each other through connecting wires; the feedback line includes a front needle feedback line and a rear needle feedback line.

13. The vascular stapler of claim 12, wherein the distal end of the front needle is provided with a suture knot and axis and the distal end of the rear needle is provided with a track.

14. The vascular stapler of claim 12, wherein the front needle feedback line and/or the rear needle feedback line is provided with 2.

15. The vascular stapler of claim 11, wherein the feedback wire is threaded into the proximal tube and out of the proximal end of the stapler body.

16. The vascular stapler of claim 15, wherein the stapler body is provided with a stop means near the proximal exit location of the feedback wire for securing the proximal end of the feedback wire.

17. A vascular suturing system comprising the vascular stapler of any one of claims 1-16, further comprising a suture adjuster.

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