A vascular suturing auxiliary positioning device and a method of using the same

Abstract

This invention discloses a vascular suture auxiliary positioning device and its usage method, relating to the field of medical device technology. It includes a main rod, a sliding sleeve, several first connecting rods, and several second connecting rods. The sliding sleeve is slidably mounted on the main rod. The first connecting rods are uniformly hinged circumferentially to the top of the main rod, and each first connecting rod has a first marker. One end of each second connecting rod is hinged to the middle of the first connecting rod, and the other end is uniformly hinged circumferentially to the sliding sleeve. An elastic element is also mounted on the main rod, with one end connected to the top of the main rod and the other end connected to the sliding sleeve. This invention, by setting the first connecting rods with the first markers, allows for marking and pre-setting suture lines at the vascular port based on the first markers. This enables workers to perform sutures in shorter areas, making it easier to judge the suture density and make timely adjustments during suture, improving the uniformity of the vascular suture line, and reducing the probability of bleeding at the anastomosis due to uneven suture placement.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a vascular suture auxiliary positioning device and its method of use. Background Technology

[0002] In the field of aortic surgery, the radical cure for aortic disease still relies on surgical reconstruction of the aorta and its branches, either anatomically or physiologically. Using an artificial blood vessel to replace the diseased vessel and anastomosing it to a preserved autologous vessel or another artificial blood vessel using suture techniques is currently the mainstream method of vascular reconstruction. The most common methods of vascular anastomosis are end-to-end or nested anastomosis, requiring continuous or intermittent sutures around the anastomosis ends of the two vessels.

[0003] Anastomotic bleeding is the most common complication, primarily caused by uneven suture distribution, leading to uneven stress at the anastomosis site and leakage of high-pressure blood from the weakest point. However, the suture spacing needs to be controlled between 2mm and 5mm during anastomosis, making suturing quite challenging. Furthermore, the two vessels at the anastomosis plane often have unequal diameters, requiring the surgeon to suture between these vessels with unequal spacing but consistent proportions – a highly difficult task that easily results in multiple instances of uneven sutures. To avoid this problem, current methods rely heavily on the surgeon's suturing skills, which is highly dependent on individual ability and cannot effectively reduce the bleeding rate. While many suturing devices exist that can improve suturing quality and reduce the difficulty of traditional suturing, they still struggle to improve the uniformity of sutures. Summary of the Invention

[0004] The purpose of this invention is to provide a vascular suture auxiliary positioning device and its usage method to solve the problems existing in the prior art, making it easier for workers to judge the density of the suture line during suturing and make timely adjustments, improving the uniformity of the vascular suture line, and reducing the probability of bleeding at the anastomosis site after vascular suture.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a vascular suture auxiliary positioning device, comprising a main rod, a sliding sleeve, a plurality of first connecting rods and a plurality of second connecting rods. The sliding sleeve is slidably sleeved on the main rod. The first connecting rods are uniformly hinged to the top end of the main rod circumferentially, and each of the first connecting rods has a first marker on the surface where it contacts the blood vessel. The plurality of first markers are located on the same circular trajectory. One end of the second connecting rod is hinged to the middle of the first connecting rod, and the other end is uniformly hinged to the sliding sleeve circumferentially. An elastic element is also sleeved on the main rod. One end of the elastic element is connected to the top end of the main rod, and the other end is connected to the sliding sleeve. In its natural state, the plurality of first connecting rods are located on the same plane.

[0006] Preferably, multiple first markers are provided along the length direction of the first connecting rod.

[0007] Preferably, the vascular suture auxiliary positioning device further includes a sleeve that is fitted onto the vascular wall. A plurality of second markers are evenly arranged circumferentially on the edge of the sleeve that mates with the vascular wall. The plurality of second markers are on the same circular trajectory. The number of second markers on the same circular trajectory is the same as the number of the first connecting rods.

[0008] Preferably, a first scale is provided on the first connecting rod along its length; and a second scale is provided on the edge of the sleeve that mates with the blood vessel along its circumference.

[0009] Preferably, the vascular suture auxiliary positioning device further includes a strip, on which a second scale is provided along its length, and the strip is wrapped around the blood vessel to form the sleeve.

[0010] Preferably, the end of the strip is provided with an adhesive material for bonding itself to form the sleeve.

[0011] Preferably, the elastic element is a tension spring.

[0012] Preferably, the first connecting rod has 3 to 5 parts.

[0013] The present invention also provides a method of using a vascular suture auxiliary positioning device, comprising the following steps: in a natural state, the main rod is held and inserted into the blood vessel along the axial direction of the blood vessel. Several first connecting rods converge with the top of the main rod as the fulcrum under the force of the blood vessel. The tension spring is stretched, and the reaction force of the first connecting rods opens the blood vessel port. When the first markers on the first connecting rods are all aligned with the edge of the blood vessel port, the position of the first markers is the position of the preset suture line at the blood vessel port. Similarly, the position of the preset suture line is marked at the port of another blood vessel.

[0014] Preferably, the connector is fitted onto the blood vessel, and the position of the second marker on the connector is the position of the preset suture line on the blood vessel wall.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] 1. The present invention, by setting a first connecting rod with a first marker, can open the blood vessel port, which is applicable to cases where the blood vessel port is circular or elliptical. After marking the blood vessel port with a pre-set suture line according to the first marker, the length between two adjacent suture lines is equal, which allows the staff to suture in a shorter area, makes it easier to judge the suture density of the suture line during suture and make timely adjustments, improves the uniformity of blood vessel suture lines, and reduces the probability of bleeding at the anastomosis site due to uneven suture position.

[0017] 2. By setting a socket, the present invention can pre-set a suture line on the outer wall of the blood vessel at a certain distance from the blood vessel port, which is suitable for the connection of two nested blood vessels and improves the applicability of the blood vessel suture auxiliary positioning device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the vascular suture auxiliary positioning device in the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of a section of the structure;

[0021] Figure 3 for Figure 1 A diagram illustrating its use in conjunction with blood vessels;

[0022] Figure 4 A schematic diagram of one structural form of a socket;

[0023] Figure 5 for Figure 4 A schematic diagram showing the use of the middle-mounted connector in conjunction with a blood vessel.

[0024] Figure 6 This is a schematic diagram of another structural form of the socket;

[0025] Figure 7 for Figure 6 A schematic diagram showing the use of the middle-mounted connector in conjunction with a blood vessel.

[0026] Figure 8 This is a schematic diagram of two blood vessels connected end-to-end.

[0027] Figure 9 A schematic diagram of a nested connection between two blood vessels;

[0028] Among them, 1. main rod; 2. sliding sleeve; 3. first connecting rod; 4. second connecting rod; 5. tension spring; 6. blood vessel; 7. suture; 8. sleeve; 9. second marker; 10. first scale; 11. second scale; 12. strip. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The purpose of this invention is to provide a vascular suture auxiliary positioning device and its usage method to solve the problems existing in the prior art, making it easier for workers to judge the density of the suture line during suturing and make timely adjustments, improving the uniformity of the vascular suture line, and reducing the probability of bleeding at the anastomosis site after vascular suture.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1:

[0033] like Figures 1-9 As shown, this embodiment provides a vascular suture auxiliary positioning device, including a main rod 1, a sliding sleeve 2, a plurality of first connecting rods 3 and a plurality of second connecting rods 4. The sliding sleeve 2 is slidably sleeved on the main rod 1. The first connecting rods 3 are uniformly hinged to the top of the main rod 1 in the circumferential direction, and a first marker is provided on the first connecting rod 3. The plurality of first markers are located on the same circular trajectory. The length of the first connecting rod 3 is greater than the radius of the applicable blood vessel 6. One end of the second connecting rod 4 is hinged to the middle of the first connecting rod 3, and the other end is uniformly hinged to the sliding sleeve 2 in the circumferential direction. An elastic element is also sleeved on the main rod 1, which can be a tension spring 5. One end of the tension spring 5 is connected to the top of the main rod 1, and the other end is connected to the sliding sleeve 2. In the natural state, the plurality of first connecting rods 3 are in an unfolded state and located in the same plane.

[0034] In use, hold the main rod 1 and insert it into the blood vessel 6 along the axial direction of the blood vessel 6. The first connecting rod 3 will gradually retract after being obstructed by the blood vessel 6, and the tension spring 5 will be stretched. Under the action of the first connecting rod 3, the port of the blood vessel 6 will also be gradually opened by the first connecting rod 3. When the first markers on the first connecting rod 3 are all aligned with the edge of the port of the blood vessel 6, it proves that the port of the blood vessel 6 has been opened into a circle. The positions of the first markers are the evenly distributed points of the edge of the port of the blood vessel 6, and suture lines 7 are preset at the evenly distributed points. Similarly, suture lines 7 can be preset at the edge of the port of another blood vessel 6. When the two blood vessels 6 are sutured end to end, first connect and lock the suture lines 7 of the two blood vessel 6 ports to make the two blood vessel 6 ports fit together. Finally, suture the gap between the adjacent suture positions of the blood vessels 6.

[0035] Therefore, by setting a first connecting rod 3 with a first marker, this embodiment can open the port of the blood vessel 6, which is applicable to cases where the port of the blood vessel 6 is circular or elliptical. After marking the port of the blood vessel 6 with the first marker and setting the suture line 7, the length between two adjacent suture lines 7 is equal, which allows the staff to suture in a shorter area, makes it easier to judge the suture density of the suture line 7 during suture and make timely adjustments, improves the uniformity of the suture line 7, and reduces the probability of bleeding at the anastomosis due to uneven suture position.

[0036] Furthermore, in this embodiment, multiple first markers are provided along the length of the first link 3; the first markers at the same position on several first links 3 are located on the same circular trajectory, which makes it easier for blood vessels 6 of different diameters to be used.

[0037] In this embodiment, the vascular suture auxiliary positioning device further includes a sleeve 8 fitted onto the wall of the blood vessel 6. A plurality of second markers 9 are evenly arranged circumferentially along the edge of the sleeve 8 that mates with the blood vessel 6, and these second markers 9 lie on the same circular trajectory. In use, the sleeve 8 is fitted onto the blood vessel 6, and suture lines 7 are pre-set at the positions of the second markers 9. Then, suture lines 7 are pre-set on the end face of another blood vessel 6 according to the positions of the first markers. The number of suture lines 7 pre-set according to the second markers 9 is the same as the number of suture lines 7 pre-set according to the first markers. Next, the subsequent blood vessel 6 is fitted onto the outside of the preceding blood vessel 6, and the pre-set suture lines 7 are connected and locked accordingly, so that the port of the subsequent blood vessel 6 is connected to the outer wall of the preceding blood vessel 6. Finally, the gaps between adjacent suture positions are sutured.

[0038] By setting the socket 8, a suture line 7 can be pre-set on the outer wall of the blood vessel 6 at a certain distance from the port of the blood vessel 6, which is suitable for the nested connection of two blood vessels 6 and improves the applicability of the blood vessel suture auxiliary positioning device.

[0039] In this embodiment, the marker can be a scribed line mark or a color mark. In this embodiment, a first scale 10 is provided on the first connecting rod 3 along its length. A second scale 11 is provided on the edge of the sleeve 8 that mates with the blood vessel 6 along its circumference. The scale lines on the first scale 10 and the second scale 11 can both serve as the first marker or the second marker 9. When using this device, those skilled in the art can mark the first connecting rod 3 when the scales of the first scale 10 are the same. By providing the second scale 11 on the sleeve 8, the same number of marks can be made according to the number of first connecting rods 3, making it more convenient to use.

[0040] Socket 8 can be a ring-shaped component with a fixed diameter, such as... Figure 4 , Figure 5 As shown, the inner diameter of the annular component fits the gap between itself and the sleeved blood vessel 6. When suturing blood vessels 6 of different diameters, annular components of different diameters need to be selected. Alternatively, the sleeve 8 can be formed by wrapping a strip 12 around the blood vessel 6. The strip 12 can have a scale and adhesive material at its end. When not in use, the adhesive material is sealed with a plastic sticker. When in use, the plastic sticker is removed, and after wrapping the strip 12 around the blood vessel 6 once, it is glued together with adhesive material to form the sleeve 8. Excess material on the strip 12 can be cut off. Finally, a scale is used to evenly mark the outer wall of the blood vessel 6, such as... Figure 6 , Figure 7 As shown.

[0041] It should be noted that the two blood vessels 6 involved in the suturing connection in this embodiment can both be artificial blood vessels 6, or both can be autologous blood vessels 6, or one can be an artificial blood vessel 6 and the other can be an autologous blood vessel 6. Those skilled in the art can choose an appropriate method to use the blood vessel suturing auxiliary positioning device in this embodiment according to the type of blood vessel 6 and the suturing method required.

[0042] Furthermore, in this embodiment, the elastic element is a tension spring 5, and the first connecting rod 3 is usually provided with 3 to 5 rods. In the attached figure, the first connecting rod 3 has 4 rods.

[0043] Example 2:

[0044] This embodiment also provides a method for using a vascular suture auxiliary positioning device, including the following steps: In its natural state, the first connecting rod 3 is located in the same plane. Holding the main rod 1, the main rod 1 is inserted into the blood vessel 6 along the axial direction of the blood vessel 6. As the first connecting rod 3 continues to be inserted after contacting the port of the blood vessel 6, under the action of the force of the outer wall of the blood vessel 6, the first connecting rod 3 gradually retracts, the sliding sleeve 2 moves away from the top of the main rod 1, the tension spring 5 is stretched, and the first connecting rod 3 also opens the port of the blood vessel 6. When the first markers on the first connecting rod 3 are all aligned with the edge of the port of the blood vessel 6, the position of the first marker is the position of the preset suture line 7 at the port of the blood vessel 6; similarly, the position of the preset suture line 7 is marked at the port of another blood vessel 6. This method of use is applicable to the end-to-end connection of two blood vessels 6.

[0045] When two blood vessels 6 are connected in a nested manner, after one blood vessel 6 is marked in the above manner, the sleeve 8 is sleeved on the other blood vessel 6. The position of the second mark 9 on the sleeve 8 is the position of the preset suture line 7 on the wall of the blood vessel 6. After the preset suture line 7 is laid, the first blood vessel 6 is nested on the second blood vessel 6 and sutured.

[0046] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0047] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vascular suturing auxiliary positioning device, characterized in that, The device includes a main rod, a sliding sleeve, several first connecting rods, and several second connecting rods. The sliding sleeve is slidably fitted onto the main rod. The first connecting rods are uniformly hinged to the top of the main rod circumferentially, and each of the first connecting rods has a first marker on its surface that contacts the blood vessel. The several first markers are located on the same circular trajectory. One end of each second connecting rod is hinged to the middle of the first connecting rod, and the other end is uniformly hinged to the sliding sleeve circumferentially. An elastic element is also fitted onto the main rod. One end of the elastic element is connected to the top of the main rod, and the other end is connected to the sliding sleeve. In its natural state, the several first connecting rods are located on the same plane. The vascular suture auxiliary positioning device further includes a sleeve that is fitted onto the vascular wall. A plurality of second markers are evenly arranged circumferentially on the edge of the sleeve that mates with the vascular wall. The plurality of second markers are on the same circular trajectory. The number of second markers on the same circular trajectory is the same as the number of the first connecting rods. The vascular suture auxiliary positioning device also includes a strip, on which a second scale is provided along its length, and the strip is wrapped around the blood vessel to form the sleeve. The ends of the strip are provided with adhesive material for bonding itself to form the sleeve.

2. The vascular suture auxiliary positioning device according to claim 1, characterized in that, Multiple markers are provided along the length of the first link.

3. The vascular suture auxiliary positioning device according to claim 1, characterized in that, Along the length of the first connecting rod, a first scale is provided on the first connecting rod; along the circumference of the sleeve, a second scale is provided on the edge of the sleeve that mates with the blood vessel.

4. The vascular suture auxiliary positioning device according to claim 1, characterized in that, The elastic element is a tension spring.

5. The vascular suture auxiliary positioning device according to claim 4, characterized in that, The first connecting rod has 3 to 5 parts.

Images