阅读说明：本技术 一种血管缝合持续减张牵引器 (Blood vessel suture continuous tension-reducing tractor ) 是由 陶圣祥 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种血管缝合持续减张牵引器,包括牵引管片,牵引管片采用生物可降解材料制成,牵引管片的外壁上均布有若干倒刺,所述牵引管片的端部开有若干锥形针孔,所述锥形针孔的孔径由外壁向内壁逐渐缩小,所述锥形针孔在外壁的入口处设有环状的定位凸起,锥形针孔的外壁入口处引出有牵引线,所述牵引线采用可吸收材料制成。该牵引器可对人力牵拉至某一位置的血管进行锚定以促进血管产生塑形变形,防止血管回弹,可减轻医务人员的体力消耗,提高手术的效率；同时该牵引器上设置有定位凸起,便于血管吻合后从定位凸起处找到缝合点,其留在血管内进行持续牵引,可防止血管缝合处在血管张力下发生脱离以及瘢痕的产生,有利于血管高质量的愈合。(The invention discloses a continuous tension-reducing tractor for vascular suture, which comprises a traction duct piece, wherein the traction duct piece is made of biodegradable materials, a plurality of barbs are uniformly distributed on the outer wall of the traction duct piece, a plurality of conical pinholes are formed in the end part of the traction duct piece, the hole diameters of the conical pinholes are gradually reduced from the outer wall to the inner wall, annular positioning bulges are arranged at the inlets of the conical pinholes at the outer wall, traction lines are led out from the inlets of the outer wall of the conical pinholes, and the traction lines are made of absorbable materials. The tractor can anchor the blood vessel which is manually drawn to a certain position to promote the blood vessel to generate plastic deformation, prevent the blood vessel from rebounding, reduce the physical consumption of medical personnel and improve the efficiency of the operation; meanwhile, the retractor is provided with the positioning bulge, so that a suturing point can be conveniently found from the positioning bulge after the blood vessels are anastomosed, the suturing point is left in the blood vessels for continuous traction, the blood vessel suturing part can be prevented from being separated and scars are prevented from being generated under the tension of the blood vessels, and the high-quality healing of the blood vessels is facilitated.)

1. The utility model provides a blood vessel is sewed up and is lasted distraction tractor, its characterized in that draws the section of jurisdiction with the second including first, and first drawing section of jurisdiction and second draw the section of jurisdiction to adopt biodegradable materials to make, and the equipartition has a plurality of barbs on the inner wall that first drawing section of jurisdiction and second draw the section of jurisdiction, the tip that first drawing section of jurisdiction and second draw the section of jurisdiction is opened has the traction pinhole, the tether has the pull wire on the traction pinhole, the pull wire adopts absorbable material to make, and first drawing section of jurisdiction and second draw the connection and interconnect through the pull wire between the section of jurisdiction.

2. The vascular suture continuous tension reduction retractor according to claim 1, wherein the central axis of the outer walls of the first pulling tube piece and the second pulling tube piece are provided with alignment positioning grooves.

3. The vascular suture continuous tension-reducing retractor according to claim 1, wherein the first retractor segment and the second retractor segment are segment structures with semi-circular cross sections.

4. The vascular suture sustained-release retractor according to claim 1, wherein the first retractor segment and the second retractor segment are made of poly (lactic-co-glycolic acid) material.

5. The vascular suture sustained release retractor according to claim 1, wherein each of the first retractor blade and the second retractor blade has 3 retractor wires.

6. The vascular suture sustained-release retractor according to claim 1, wherein the pull wire is made of polyethylene glycol material.

Technical Field

The invention relates to the field of surgical consumables, in particular to a blood vessel suturing continuous tension-reducing retractor.

Background

Vascular sutures are devices that connect defective blood vessels together to form a pathway to restore smooth blood flow. When the blood vessel is sutured, a blood vessel tractor is needed, the blood vessel tractor draws the disconnected blood vessel on one side to the end part of the blood vessel on the other side, and then end-to-end anastomosis and suturing are carried out on the two sections. The principle of no tension force is followed when the blood vessel is sutured, namely the smaller the tension force at the end faces of the two anastomotic blood vessels is, the tighter the anastomosis of the blood vessels is, which is not only beneficial to the healing of the section of the blood vessel, but also can reduce the formation of blood vessel scars so as to achieve the purpose of reducing the formation of thrombus.

However, the existing blood vessel tractor mostly adopts a mechanical continuous traction method to draw the disconnected two side blood vessels to an anastomotic state, because the blood vessels are a tissue with both elasticity and plasticity, when the force of the continuous traction is too large, the diameter shrinkage phenomenon of local blood vessels can occur, and when the traction force exceeds the plasticity limit, the blood vessels can have the risk of bursting apart. Because the machine can not sense the elastic and plastic deformation state of the blood vessel when in traction, the mechanical traction mode has natural defects for controlling the diameter shrinkage and the fracture of the blood vessel. Therefore, the manual traction mode can reduce the occurrence of the problems.

However, the existing manual traction method is as follows: one hand is used for fixing a blood vessel on one side of the section, the other hand is used for clamping the other blood vessel by using a blood vessel forceps and drawing the blood vessel to an anastomosis point, in the drawing process, in order to prevent the problems of diameter reduction and breakage of the blood vessel, a section of the blood vessel is drawn forwards and stopped to wait for the generation of plastic deformation until the blood vessel is drawn to the anastomosis point for tension-free suture. In the process of artificial traction, due to the lack of corresponding auxiliary devices, medical staff need to pull the blood vessel and perform anastomosis and suturing on the blood vessel port at the same time, the difficulty of operation is high, and the problem of blood vessel tension still exists after the operation, which causes the scar generation at the anastomotic part.

Disclosure of Invention

The invention aims to solve the technical problems, and designs a blood vessel suture continuous tension-reducing retractor which can draw two separated blood vessels so as to eliminate the problem that the end parts of the blood vessels have tension during anastomosis and achieve the purpose of tension-free suture; the tractor has simple structure and convenient operation.

In order to achieve the technical effects, the invention is realized by the following technical scheme:

the utility model provides a blood vessel is sewed up and is lasted tension reduction tractor, draws the section of jurisdiction and second including first, and first section of jurisdiction and second of drawing are drawn the section of jurisdiction and are adopted biodegradable material to make, and the equipartition has a plurality of barbs on the inner wall that first section of jurisdiction and second were drawn the section of jurisdiction, the tip that first section of jurisdiction and second were drawn the section of jurisdiction is opened has the traction pinhole, it has the pull wire to draw the tether on the pinhole, the pull wire adopts absorbable material to make, and first section of jurisdiction and second of drawing are drawn the connection and interconnect through the pull wire between the section of jurisdiction.

Furthermore, an alignment positioning groove is formed in the central axis of the outer wall of each of the first traction duct piece and the second traction duct piece.

Furthermore, the first traction duct piece and the second traction duct piece are of duct piece structures with semi-annular sections.

Furthermore, the first traction duct piece and the second traction duct piece are made of polylactic acid-glycolic acid copolymer materials.

Furthermore, each of the first traction duct piece and the second traction duct piece is tied with 3 traction lines.

Furthermore, the traction wire is made of polyethylene glycol material.

The invention has the beneficial effects that: the tractor can draw two separated blood vessels to solve the problem of tension at the end parts of the blood vessels during anastomosis and achieve the purpose of tension-free suturing, is made of degradable materials, does not need to be taken out, can be degraded after the self-repair of the blood vessels is completed, and is left in the blood vessels for continuous traction, so that the blood vessels are prevented from being separated and scars are prevented from being generated under the tension of the blood vessels at the suturing position, and the high-quality healing of the blood vessels is facilitated; the tractor has simple structure and convenient operation; the tractor is provided with an aligning and positioning groove which is matched with the aligner for use, so that the side rotation of the two blood vessels can be prevented when the two blood vessels are pulled and sutured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a vascular suturing sustained release retractor;

FIG. 2 is a schematic view of a constant tension retractor for suturing a blood vessel;

fig. 3 is a schematic drawing showing the traction suture state of the vascular suture continuous tension-reducing retractor.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a first traction tube piece, 2-a second traction tube piece, 3-barbs, 5-traction lines, 6-a first blood vessel, 7-a second blood vessel, 8-an alignment positioning groove, 9-an aligner, 91-a positioning rod, 92-an elastic connecting part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a blood vessel suture continuous tension-reducing retractor comprises a first traction tube piece 1 and a second traction tube piece 2, wherein the first traction tube piece and the second traction tube piece 2 are made of biodegradable materials, a plurality of barbs 3 are uniformly distributed on the inner walls of the first traction tube piece 1 and the second traction tube piece 2, a traction pinhole 4 is formed at the end part of the first traction tube piece 1 and the second traction tube piece 2, a traction line 5 is tied on the traction pinhole 4, the traction line 5 is made of absorbable materials, and the first traction tube piece 1 and the second traction tube piece 2 are connected with each other through the connection of the traction line 5.

In this embodiment, the alignment positioning groove 8 is arranged on the central axis of the outer walls of the first traction duct piece 1 and the second traction duct piece 2.

In this embodiment, the first traction segment 1 and the second traction segment 2 are segment structures having semicircular cross sections.

In this embodiment, the first pulling duct piece 1 and the second pulling duct piece 2 are made of a polylactic acid-glycolic acid copolymer material.

In this embodiment, the pull wire 5 is made of polyethylene glycol.

As shown in fig. 2-3, one specific application of the present invention is: attaching a first traction duct piece 1 and a second traction duct piece 2 to a first blood vessel 6 and a second blood vessel 7 which are separated, respectively, inserting the tips of two positioning rods 91 of an aligner 9 into alignment positioning grooves of the first traction duct piece 1 and the second traction duct piece 2, respectively, observing whether the central axes of the first traction duct piece 1 and the second traction duct piece 2 are overlapped, timely adjusting the position of the first traction duct piece 1 or the second traction duct piece 2 when the central axes are not overlapped, and placing the first traction duct piece 1 and the second traction duct piece 2 to be staggered to cause lateral rotation between the first blood vessel 6 and the second blood vessel 7; the distance L1 between the first traction duct piece 1 and the second traction duct piece 2 and the anastomotic port is 1-2cm, and the length of the traction line is 1-2cm correspondingly; because the blood vessel consists of the adventitia and the intima, the cell adventitia should be stripped at the port of the blood vessel, when the first traction duct piece 1 and the second traction duct piece 2 are drawn, the first traction duct piece 1 and the second traction duct piece 2 are provided with barbs 3 penetrating into the vascular adventitia, the first traction duct piece 1 and the second traction duct piece 2 are oppositely pulled to pull the traction lines 5, the first blood vessel 6 and the second blood vessel 7 are mutually close under the traction of the first traction duct piece and the second traction duct piece, the first traction duct piece 1 and the second traction duct piece 2 are mutually corresponding to the traction lines 5 in a knotting connection mode, the aligner 9 is removed, the blood vessel suturing section with the length of 1-2cm at the front end of the first traction duct piece 1 and the second traction duct piece 2 is in a tension-free state, and the port of the first blood vessel 6 and the port of the second blood vessel 7 are sutured to achieve the purpose of tension-free suturing. After operation, the first traction duct piece 1 and the second traction duct piece 2 are left on the first blood vessel 6 and the second blood vessel 7 to continuously traction the first blood vessel and the second blood vessel, so that the blood vessel suture is prevented from being separated and scars are prevented from being generated under the tension of the blood vessels, and the high-quality healing of the blood vessels is facilitated; the tractor has simple structure and convenient operation. The retractor is made of degradable materials, does not need to be taken out, and can be degraded after the self-repair of the blood vessel is completed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.