WO2002087448A1

WO2002087448A1 - Device for performing vascular anastomosis

Info

Publication number: WO2002087448A1
Application number: PCT/CN2002/000266
Authority: WO
Inventors: Xiaozhe Xu; Xiaoqing Jiang
Original assignee: Xiaozhe Xu; Xiaoqing Jiang
Priority date: 2001-04-29
Filing date: 2002-04-18
Publication date: 2002-11-07
Also published as: CN2472666Y

Abstract

The present invention relates to the device for performing vascular anastomosis. The said device includes a core rod with its head tapering. A sleeve is loaded onto the device by encircling the shaft of the said core rod. A needle driving plate is fixed at the distal end of the core rod, and the needle driving plate is movable along the core rod. A plurality of needle slots are provided on the internal surface of the said sleeve or on the external surface of the shaft of the said core rod. One needle is arranged in each needle slot, and each needle is movable along each needle slot. The distal end of each needle is fixed onto the needle driving plate. All needles is provided with sutures. Thus, the vascular anastomosis can be performed by pushing the needle driving plate to make the needles and the associated sutures pass through the vascular wall.

Description

Vascular stapler Technical field

The invention relates to a vascular stapler, which belongs to medical surgical instruments. Background of the invention

During the surgical procedure, it is often necessary to suture the patient's blood vessels or other catheters. Most current suture methods are direct sutures, including arterial to arterial and arterial to venous sutures. The forms of sutures are end-to-end anastomosis, End-to-side anastomosis, side-to-side anastomosis, and sleeve anastomosis, etc. The method of suturing is to first clamp the two anastomoses with a blood vessel clip, and then close them for intermittent suture. Because the rupture ends on both sides of the blood vessel are in a free state, the rupture ends are again tensioned, and the lumen is occluded. The lumen of the blood vessel is small. It is difficult to insert and withdraw the needle during surgery, plus the stitch length and margin of the suture vessel There are certain requirements, so the suture of blood vessels has higher requirements on clinicians. Even doctors with good surgical skills will not be able to guarantee that each suture will not be lost due to factors such as psychological instability, upset mood, physical exertion, or physical weakness. Mistake. However, the vascular suture methods or instruments used in some operations have different disadvantages: For example, the vascular anastomosis wheel method requires the blood vessel to be turned out first. In this way, the blood vessel wall is easily damaged and the lumen is narrowed. The scope of application is greatly limited; for example, laser welding and adhesive bonding are used for sutures, and its application is obviously greatly restricted; for other vascular staplers, because of the many and complicated technical steps, it requires more This device has been used many times, so it has not been widely used. Summary of invention

In order to overcome the shortcomings of the prior art, an object of the present invention is to provide a vascular stapler with a simple structure, convenient operation, and standard suture.

Another object of the present invention is to provide a vascular stapler, which can be applied to various suture forms of blood vessels or other catheters.

In order to achieve the above object, the present invention provides a vascular stapler, which includes a mandrel with a gradually decreasing head, a needle is arranged around the outer side of the mandrel, the needle is threaded, and the mandrel and the outside of the needle are sleeved with a cannula The tail end of the needle is connected to the pushing plate, and the pushing plate is sleeved on the tail of the mandrel and can move along the mandrel. A needle groove corresponding to a needle is provided inside the cannula or outside the mandrel rod portion, and the needle is movably disposed in the needle groove.

Grooves are provided on the outside of the stem portion of the mandrel and the inside of the sleeve, and the separately provided grooves together form a needle groove corresponding to a needle, and the needle is movably disposed in the needle groove.

The needle grooves are arranged at equal distances.

The diameter of the largest part of the mandrel head is larger than the diameter of the mandrel rod part, a recess is provided at the rear part of the mandrel head, and the needle is located at the recess.

The sleeve sleeved on the mandrel is detachable.

The sleeve is composed of two notched rings with a C-shaped cross section, and the notches of the two rings are staggered from each other during installation.

The present invention also provides a vascular stapler, which includes a core rod, the core rod having a semi-circular or semi-circular cross section; a needle is arranged on the outside of the core rod, a wire is threaded on the needle, and the core rod and the needle are sleeved outside There is a cannula, the tail end of the needle is connected to the push plate, and the push plate is sleeved on the tail end of the mandrel; a groove is provided near the head of the mandrel.

A needle groove corresponding to the needle is provided on the circular arc surface inside the sleeve or outside the mandrel rod portion, and the needle is movably disposed in the needle groove.

Grooves are respectively provided on the arc surface of the mandrel rod portion and the inside of the sleeve, and the separately provided grooves together form a needle groove corresponding to a needle, and the needle is movably disposed in the needle groove.

The needle grooves are arranged at equal distances. ,

The sleeve sleeved on the mandrel is detachable. Brief description of the drawings

The present invention is described in detail below with reference to the drawings and embodiments:

FIG. 1 is a schematic plan view of the present invention;

FIG. 2 is a schematic diagram of the three-dimensional structure of the present invention;

FIG. 3 is a schematic diagram of an end-to-side suture structure of the present invention. Detailed description of the invention

Example 1:

As shown in FIG. 1, Embodiment 1 of the present invention includes a core rod 1, a pushing plate 2, a plurality of pins 3 connected to a wire 4, and a cannula 5, where The core rod 1 is a cylindrical rod body, and its head 11 is gradually reduced to facilitate insertion of the core rod 1 into the inner wall of the blood vessel 8. The shape of the head is particularly preferably a conical or arc-shaped end. The core rod head 11 The diameter at the maximum is slightly larger than the diameter of the mandrel rod portion 12, and a depression 13 is provided at the rear of the conical or arc-shaped head portion 11, that is, the connection between the head portion 11 and the rod portion 12, which is circular. arc.

The tail 14 of the core rod 1 is sleeved with a thrust plate 2 which can be moved forward and backward along the core rod 1. The thrust plate 2 is provided with a plurality of needles 3, and the tail 31 of the needle 3 is installed on the thrust plate. The needle 3 can Take out from the push plate 2 forward, and thread 4 is threaded on each of the needles 3. These needles 3 are arranged at equal intervals in the axial direction on the outside of the core rod 1. The needles 32 are located on the conical or arc-shaped head of the core rod 1. Since the diameter of the head 11 is greater than the diameter of the rod 12 at the 13 depressions of 11, the needle 32 can be hidden in the 13 depressions. When the vascular stapler of this embodiment is inserted into the blood vessel 8 for operation, the needle 32 The inner wall of the blood vessel 8 will not be punctured or scratched. A cannula 5 is sleeved on the outside of the mandrel 1 and the needle 3, and a plurality of needle grooves 7 arranged in the same number as the needles 3 and equidistantly arranged on the inside of the cannula 5 are placed in the needle groove 7 and It can move back and forth along the needle groove 7.

The cannula 5 sheathed on the outside of the mandrel 1 and the needle 3 can be disassembled and closed to remove the cannula 12 from the mandrel 1. The sleeve 5 can be composed of two notched rings with a C-shaped cross section, and the notches of the two rings are staggered with each other. Preferably, the notches are located on the opposite sides of the core rod 1 and are clamped on the core rod 1. At this time, because the positions of the two gaps are staggered, they form a closed ring and are clamped on the mandrel 1. When the two rings need to be removed, the two rings are removed from the mandrel 1 respectively.

As shown in FIG. 1 and FIG. 2, when end-to-end suture is performed on the blood vessel 8, the conical or arc-shaped head 11 of the core rod 1 is inserted from a broken end of the blood vessel 8 into a small part of the blood vessel 8. The broken end is stretched a little. Because the needle 32 of the needle 3 is hidden in the depression 13, the needle 32 also enters the inner wall of the broken end of the blood vessel 8 with the core rod 1 and pushes the pushing plate 2. The needle 3 is along the core rod 1 at The needle groove 7 on the inner side of the cannula 5 advances inward, and the needle 5 passes through the blood vessel 8 from the inner wall of the blood vessel 8 along the arc at the depression 13 of the mandrel 1, because the diameter of the head 11 is slightly larger than the diameter of the rod 12, so, The needle 3 will be inclined outward 21, so that the needle tail 32 of the needle 3 is separated from the pushing plate 2 until the thread 4 on the needle tail 32 of the needle 3 also passes through the blood vessel 8, and then the cannula 5 is opened, and the core rod 1 can be withdrawn. . For the blood vessel on the other side that needs to be sutured, the above method is also used, in which the thread 4 worn by each needle 3 is the thread 4 used when the blood vessel 8 is sutured. After the thread 4 passes through the blood vessel wall, each The line 4 passing through the inner wall of the broken end of the two blood vessels 8 is outside the blood vessel 8 Knot the side to form an intermittent suture, at which point the suture is complete.

Since the distance between the multiple needles 3 is equidistantly set on the pushing plate 2, the core rod 1, and the cannula 5, so that the margins of the needles 32 after passing through the blood vessel 8 are equal, the specifications of the stitches and margins stitched out , Unified, standard, and more than 3 needles go hand in hand, fast and efficient.

Example 2:

This embodiment is also composed of a core rod 1 ′, a push plate 2 ′, a plurality of pins 3 connected to a wire 4 ′, and a sleeve 5 ′, wherein

The cross section of the core rod Γ is semi-circular or arc-shaped. In this way, the core rod Γ is composed of an arc surface 15 'and a plane 14', and the end surface of the head 1Γ is flat or slightly curved. Γ the head 11 and the arc surface 15 are provided with grooves 10; The rear part of the core rod Γ is sleeved with a thrust plate 2 ', and the thrust plate 2' is provided with a shape corresponding to the cross-sectional shape of the rod portion of the core rod. Hole, that is, the hole is semi-circular or arc-shaped, so that it can be sleeved on the mandrel Γ to move back and forth, the push plate 2, is installed with a plurality of needles 3, each needle 3 is threaded with a thread 4 'The pin 3 is mounted on the push plate with its tail 3Γ, and the pin 3 can be taken out from the push plate 2 and forward. On the other hand, the flat surface 14 of the core rod Γ is not provided with a needle 3 'on one side. The needle 32 'is located behind the core rod groove 10'; a sleeve 5 'is sleeved on the outside of the core rod Γ and the needle 3', and a plurality of the same number as the needle 3 'are provided on the inside of the sleeve 5' and Needle grooves 7 are equidistantly arranged in the axial direction. The needle grooves 7 'are provided only on the circular arc surface 15' of the core rod Γ, and the needle groove 7 is not provided on one side of the plane 14 of the core rod Γ. 3. It is placed in the needle groove 7 'and can be moved back and forth along the needle groove 7'. The cannula 5 can be disassembled and closed.

As shown in FIG. 3, when end-to-side suture of a blood vessel is required, a circular hole is first opened in the side wall of the blood vessel. The vascular stapler of Example 2 is placed in the blood vessel, and the circular hole is divided into two semicircles and processed separately. First, align the semi-circular or semi-circular groove 10 'of the core rod Γ with a semi-circle of the circular hole of the blood vessel to be sutured, and push the push plate 2 forward so that the needle 5 passes from the blood vessel outward through the blood vessel. , Pull the needle 32 to the line 4, pass through the blood vessel, and then treat the other semicircle of the blood vessel again; next, treat the blood vessel requiring end suture, and suture the blood vessel in the same way as in Example 1, Among them, each needle 3 is threaded for thread 4 used for suturing a circular hole in the side wall of a blood vessel. After passing the thread through the inner wall of the end of the blood vessel, it is passed through the inner wall of the blood vessel side and the inner wall of the broken end respectively. 4. Knot the outside of the vessel wall to form an intermittent suture, which completes the end-to-side vessel suture.

Similarly, Embodiment 2 can also be used for side-to-side suture of a blood vessel in a manner similar to that of end-to-side suture, except that after passing the line 4 'through a circular hole in the side wall of the blood vessel, the The vascular stapler is placed in a circular hole in the side wall of another blood vessel that needs to be sutured, and it can be sutured.

By using the vascular stapler of the present invention, not only vascular sutures but also ureters, bile ducts, vas deferens, fallopian tubes and the like can be sutured, especially in organ transplantation operations. It can also show its skills, its use method and vascular suture The method is the same.

The foregoing Embodiments 1 and 2 are only descriptions of specific applications of the present invention, rather than limiting the structural forms thereof. The present invention may also have other different structural forms, such as the needle grooves 7, 7 'in Embodiments 1 and 2. It is arranged on the inner side of the cannula 5, 5 ', but on the outer side of the mandrel 1, Γ. The needle grooves 7, 7 can also be provided with a half groove on the outer side of the mandrel 1, 1. The cannula 5, 5 'There are half grooves on the inner side. When the core rods 1, Γ and the sleeves 5, 5 are mated, the core rods and the two half grooves on the sleeves form a complete needle slot 7, 7'. Industrial applicability

Because the present invention sets the suture needle on the outer side of the mandrel and pushes it through the wall of the blood vessel to carry out suture, the structure is relatively simple compared with the existing vascular stapler, and only needs to be used during operation. By pushing the pusher plate, the needle can be passed through the blood vessel for suture, so the operation of the present invention is simple and the steps are simplified; and the suture needle of the present invention is installed in a preset needle slot, and the pitch of each needle slot is equal. The stitches and margins from the suture are the same, and the suture effect is standardized and uniform. Furthermore, the present invention can pass multiple suture needles through the vessel wall at one time, which improves the efficiency, shortens the operation time, and reduces the pain of the patient.

In addition, the semi-circular or semi-arc mandrel provided in another embodiment of the present invention can be inserted into a circular hole cut on a side wall of a blood vessel, and the circular hole on the side wall and an end of another blood vessel Or the side is sutured, so the end-to-side anastomosis or the side-to-side anastomosis can be conveniently performed, which can make the present invention applicable to different surgical requirements.

Claims

Claim

1. A vascular stapler comprising a mandrel with a gradually decreasing head, characterized in that: a needle is arranged around the outer side of the mandrel, a needle is threaded, and a cannula is sleeved on the outer side of the mandrel and the needle. The tail end is connected with the pushing plate, and the pushing plate is sleeved on the tail of the mandrel and can be moved along the mandrel.

2. The vascular stapler according to claim 1, wherein a needle groove corresponding to a needle is provided on the inner side of the cannula or the outer side of the mandrel rod portion, and the needle is movably disposed in the needle groove.

3. The vascular stapler according to claim 1, characterized in that: grooves are respectively provided on the outside of the stem portion of the core rod and the inside of the cannula, and the separately provided grooves together form a needle groove corresponding to a needle, The needle is movably disposed in the needle groove.

4. The vascular stapler according to claim 2 or 3, wherein the needle grooves are equidistantly arranged.

5. The vascular stapler according to claim 1, characterized in that: the diameter of the largest part of the mandrel head is larger than the diameter of the mandrel rod part, a depression is provided at the rear part of the mandrel head, and the needle is located in the depression Office.

6. The vascular stapler according to claim 1, wherein: the sleeve sleeved on the mandrel is detachable. '

7. The vascular stapler according to claim 6, characterized in that the sleeve is composed of two notched rings with a C-shaped cross section, and the notches of the two rings are staggered from each other during installation.

8. A vascular stapler comprising a core rod, characterized in that: the cross section of the core rod is semi-circular or semi-circular arc-shaped; a needle is arranged on the outside of the core rod, a thread is threaded on the needle, and the outside of the core rod and the needle A sleeve is sleeved, the tail end of the needle is connected to the push plate, and the push plate is sleeved on the tail end of the mandrel; a groove is provided near the head of the mandrel.

9. The vascular stapler according to claim 8, characterized in that: a needle groove corresponding to a needle is provided on a circular arc surface on the inside of the cannula or on the outside of the mandrel rod portion, and the needle is movably provided in the needle groove in.

10. The vascular stapler according to claim 8, characterized in that: grooves are respectively provided on the outer surface of the mandrel rod portion and the inside of the cannula, and the separately provided grooves together correspond to a needle. The needle groove is movably disposed in the needle groove.

11. The vascular stapler according to claim 9 or 10, wherein the needle grooves are arranged at equal distances.

12. The vascular stapler according to claim 8, wherein: the sleeve sleeved on the mandrel is detachable.