阅读说明：本技术 反扣快接式主动脉复合支架 (Reversely buckled quick-connection type aorta composite stent ) 是由 马路遥 石子莹 孙浩亮 于 2019-09-30 设计创作，主要内容包括：本发明涉及反扣快接式主动脉复合支架,包括主动脉弓部人造血管和支架人工血管,主动脉弓部人造血管的一端与支架人工血管的一端连接,其特征在于：主动脉弓部人造血管与支架人工血管的连接处设置有反扣式连接器,反扣式连接器包括连接环,主动脉弓部人造血管连接于连接环一端,支架人工血管连接于连接环另一端,连接环朝向主动脉弓部人造血管的一端设有弹性反扣圈,弹性反扣圈位于主动脉弓部人造血管的外围,弹性反扣圈外周面邻接连接环的部位设有弧形凹槽,弹性反扣圈设有快速束紧结构。本发明便于将主动脉复合支架快速可靠地固定在主动脉血管上,同时还起到止血作用,无需耗时缝合,能够大大缩短深低温停循环时间,提高患者的存活率。(The invention relates to a reverse buckling quick connection type aorta composite stent, which comprises an aortic arch part artificial blood vessel and a stent artificial blood vessel, wherein one end of the aortic arch part artificial blood vessel is connected with one end of the stent artificial blood vessel, and the reverse buckling quick connection type aorta composite stent is characterized in that: aortic arch portion artificial blood vessel is provided with left-hand thread formula connector with support artificial blood vessel's junction, left-hand thread formula connector includes the go-between, aortic arch portion artificial blood vessel connects in go-between one end, support artificial blood vessel connects in the go-between other end, the go-between is equipped with elasticity left-hand thread circle towards aortic arch portion artificial blood vessel's one end, elasticity left-hand thread circle is located aortic arch portion artificial blood vessel's periphery, the position that elasticity left-hand thread circle outer peripheral face borders on the go-between is equipped with the arc recess, elasticity left-hand thread circle is equipped with the structure of tightening fast. The invention is convenient for fixing the aorta composite stent on the aorta vessel quickly and reliably, plays a role in hemostasis, does not need time-consuming suture, can greatly shorten the deep low temperature stop cycle time, and improves the survival rate of patients.)

1. Left-hand thread connects formula aorta composite biocement soon, including aortic arch portion artificial blood vessel (1) and support artificial blood vessel (2), the one end of aortic arch portion artificial blood vessel (1) with the one end of support artificial blood vessel (2) is connected, its characterized in that: aortic arch portion artificial blood vessel (1) is provided with back-buckling formula connector (3) with the junction of support artificial blood vessel (2), back-buckling formula connector (3) are including go-between (3.1), aortic arch portion artificial blood vessel (1) is connected in go-between (3.1) one end, support artificial blood vessel (2) are connected in go-between (3.1) other end, go-between (3.1) are equipped with elasticity back-buckling circle (3.2) towards the one end of aortic arch portion artificial blood vessel (1), elasticity back-buckling circle (3.2) are located the periphery of aortic arch portion artificial blood vessel (1), and the position that elasticity back-buckling circle (3.2) outer peripheral face borders on go-between (3.1) is equipped with arc recess (3.2a), elasticity back-buckling circle (3.2) are equipped with the structure of tightening fast.

2. The reverse buckling quick connect aortic composite stent of claim 1 wherein: the rapid tightening structure comprises a tightening line (3.3), a tightening line groove (3.2b) is formed in the elastic reverse buckling ring (3.2), the tightening line (3.3) penetrates through the tightening line groove (3.2b), and a leading-out hole for the two ends of the tightening line (3.3) to penetrate out is formed in the tightening line groove (3.2 b).

3. The reverse buckling quick connect aortic composite stent of claim 2 wherein: the bundling wire groove (3.2b) is arranged to be spiral extending along the length direction of the elastic left-hand thread ring (3.2).

4. The reverse buckling quick connect aortic composite stent of claim 1 wherein: one end of the connecting ring (3.1) facing the stent artificial blood vessel (2) is provided with three support rods (3.4) which are uniformly distributed in the circumferential direction, the inner ends of the three support rods (3.4) are provided with bending sections (3.4a) which are bent towards the center, and the inner ends of the three bending sections (3.4a) are mutually abutted to the same point.

5. The reverse-buckling quick-connect aortic composite stent of claim 4, wherein: the bending sections (3.4a) are Z-shaped, and the butt joint points of the three bending sections (3.4a) are close to the middle part of the supporting rod (3.4).

6. The reverse buckling quick connect aortic composite stent of claim 1 wherein: the one end that go-between (3.1) faced support artificial blood vessel (2) is equipped with annular convex part (3.5), annular convex part (3.5) are located the periphery of support artificial blood vessel (2), and the equipartition is provided with a plurality of stylolite threading grooves (3.5a) on annular convex part (3.5).

7. The reverse buckling quick connect aortic composite stent of claim 1 wherein: the aortic arch artificial blood vessel (1) is also provided with an artificial branch blood vessel (4) and an arterial perfusion branch blood vessel (5).

8. The reverse buckling quick connect aortic composite stent of claim 1 wherein: the elastic left-hand thread ring (3.2) is provided with a plurality of notches which are uniformly distributed in the circumferential direction.

9. The reverse buckling quick connect aortic composite stent of claim 1 wherein: the aortic arch artificial blood vessel (1), the stent artificial blood vessel (2) and the connecting ring (3.1) are connected in a bonding way or are arranged integrally.

10. The reverse buckling quick connect aortic composite stent of claim 1 wherein: the whole body of the back-buckling type connector (3) is made of medical silica gel or rubber materials.

Technical Field

The invention relates to a composite stent, in particular to a back-off quick-connection type aorta composite stent, belonging to the technical field of design of medical instruments.

Background

In the traditional A-type aortic dissection operation, a replaced aortic arch artificial blood vessel and a stent artificial blood vessel are completely independent two components, and the two components and the wall of an aortic blood vessel are required to be sutured and connected together; in the aortic arch operation, the human body is in a state of circulation stopping at a deep low temperature (the temperature of the human body is reduced to 18-25 ℃, and unilateral brain perfusion is mostly carried out on the brain), and in the operation, except the brain, all organs have a circulation stopping ischemia and hypoxia process. The time of the cycle stopping in the operation process mainly depends on the time of suturing the aortic arch artificial blood vessel and the stent artificial blood vessel together with the aortic blood vessel wall, and the suturing difficulty is high, so bleeding can be caused by carelessness. Meanwhile, when replacing the aortic arch, three branch vessels (brachiocephalic artery, left common carotid artery and left subclavian artery) from the aortic arch are required to be reconstructed, so that the control on the operation time is very strict and the deep low temperature stop cycle time is shortened as much as possible.

The Chinese patent with the application number of 'CN 201521106300.4' discloses an aortic arch stent artificial blood vessel structure for surgery, which comprises a first artificial blood vessel, a connecting ring and a second artificial blood vessel, when in use, the artificial blood vessel can be quickly sutured and connected by matching with an operation line, the suturing difficulty in the artificial blood vessel replacement operation is reduced, the operation time is shortened, but because the product needs to be sutured in the operation process, the suturing operation not only needs to consume short time, but also has high requirements on the proficiency of doctors, and in the operation in which the time is life, the success rate of the operation and the survival rate of patients can be influenced by any time consumption.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a reverse buckling quick connection type aorta composite stent which is ingenious in structure, reasonable in design, convenient to fix the aorta composite stent on an aorta blood vessel quickly and reliably, plays a role in stopping bleeding, does not need time-consuming sewing, is quick and convenient to operate, can greatly shorten the deep low temperature stop cycle time, saves the operation time, reduces the operation difficulty and improves the survival rate of patients.

According to the technical scheme provided by the invention: the back-buckling quick-connection type aorta composite stent comprises an aortic arch part artificial blood vessel and a stent artificial blood vessel, wherein one end of the aortic arch part artificial blood vessel is connected with one end of the stent artificial blood vessel, and the back-buckling quick-connection type aorta composite stent is characterized in that: aortic arch portion artificial blood vessel and support artificial blood vessel's junction is provided with left-hand thread formula connector, left-hand thread formula connector includes the go-between, aortic arch portion artificial blood vessel connects in go-between one end, support artificial blood vessel connects in the go-between other end, the go-between is equipped with elasticity left-hand thread circle towards aortic arch portion artificial blood vessel's one end, elasticity left-hand thread circle is located aortic arch portion artificial blood vessel's periphery, and the position that elasticity left-hand thread circle outer peripheral face borders on the go-between is equipped with the arc recess, elasticity left-hand thread circle is equipped with the structure of tightening fast.

As a further improvement of the invention, the rapid tightening structure comprises a tightening line, a tightening line groove is arranged in the elastic reverse buckling ring, the tightening line penetrates through the tightening line groove, and the tightening line groove is provided with leading-out holes for two ends of the tightening line to penetrate out.

As a further improvement of the invention, the bundling wire groove is arranged to be spiral extending along the length direction of the elastic reverse buckling ring.

As a further improvement of the invention, one end of the connecting ring facing the stent artificial blood vessel is provided with three support rods which are uniformly distributed in the circumferential direction, the inner ends of the three support rods are respectively provided with a bending section which is bent towards the center, and the inner ends of the three bending sections are mutually abutted against the same point.

As a further improvement of the invention, the bending sections are Z-shaped, and the abutting points of the three bending sections are close to the middle part of the supporting rod.

As a further improvement of the invention, one end of the connecting ring facing the stent artificial blood vessel is provided with an annular convex part which is positioned at the periphery of the stent artificial blood vessel, and a plurality of suture threading grooves are uniformly distributed on the annular convex part.

As a further improvement of the invention, the artificial aortic arch part blood vessel is also provided with an artificial branch blood vessel and an arterial perfusion branch blood vessel.

As a further improvement of the invention, the elastic left-hand buckling ring is provided with a plurality of notches which are uniformly distributed in the circumferential direction.

As a further improvement of the invention, the aortic arch artificial blood vessel and the stent artificial blood vessel are connected with the connecting ring in an adhesive way or are arranged integrally.

As a further improvement of the invention, the whole body of the back-off connector is made of medical grade silica gel or rubber material.

Compared with the prior art, the invention has the following advantages:

1) the invention has the advantages of ingenious structure and reasonable design, and the left-hand thread type connector can be quickly and reversely buckled and fixed on the outer wall of the autologous aortic vessel by arranging the left-hand thread type connector, so that the whole aortic composite stent can be reliably fixed and cannot be displaced, and meanwhile, the left-hand thread type connector also plays a role in hemostasis without time-consuming sewing, is quick and convenient to operate, can greatly shorten the deep low temperature shutdown cycle time, saves the operation time, reduces the operation difficulty and improves the survival rate of patients.

2) The rapid tightening structure is ingenious in design, so that the elastic reverse buckling ring can be fully tightened on the outer wall of the self-body aorta blood vessel, and the self-body aorta blood vessel is more tightly connected with the stent artificial blood vessel.

3) The connecting ring is provided with three support rods, and the inner ends of the front-end bending sections of the three support rods are mutually butted at the same point, so that an auxiliary supporting effect can be achieved, and the artificial blood vessel of the stent is prevented from being extruded and deformed by the elastic reverse buckling ring and the quick tightening structure.

4) The connecting ring is provided with the annular convex part, and the annular convex part is uniformly provided with the suture line threading grooves, so that the autologous aorta blood vessel, the stent artificial blood vessel and the connecting ring can be connected in a suture mode, and the application range is further widened.

5) The artificial blood vessel of the aortic arch part is also provided with an artificial branch blood vessel and an arterial perfusion branch blood vessel. The whole body perfusion including the brain perfusion can be carried out on the patient through the matching use of the two in the operation process, thereby greatly reducing the postoperative complications and improving the operation success rate.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is an enlarged sectional view of the structure at a in fig. 1.

Fig. 3 is a side view of the construction of a back-snap connector in an embodiment of the invention.

Description of reference numerals: 1-aortic arch artificial blood vessel, 2-stent artificial blood vessel, 3-left-hand connector, 3.1-connecting ring, 3.1a-, 3.2-elastic left-hand ring, 3.2 a-arc groove, 3.2 b-bundling wire groove, 3.3-bundling wire, 3.4-supporting rod, 3.4 a-bending section, 3.5-annular convex part, 3.5 a-suture line groove, 4-artificial branch blood vessel, 5-arterial perfusion branch blood vessel.

Detailed Description

The invention is further illustrated by the following specific figures and examples.

As shown in fig. 1 to 3, the embodiment discloses a reverse buckling quick connection type aorta composite stent, which comprises an aortic arch part artificial blood vessel 1 and a stent artificial blood vessel 2, one end of the aortic arch part artificial blood vessel 1 is connected with one end of the stent artificial blood vessel 2, the connection part of the aortic arch artificial blood vessel 1 and the stent artificial blood vessel 2 is provided with a left-hand connector 3, the back-buckling type connector 3 comprises a connecting ring 3.1, the artificial blood vessel 1 at the aortic arch part is connected with one end of the connecting ring 3.1, the stent artificial blood vessel 2 is connected with the other end of the connecting ring 3.1, one end of the connecting ring 3.1 facing the aortic arch artificial blood vessel 1 is provided with an elastic left-hand thread ring 3.2, the elastic left-hand thread ring 3.2 is positioned at the periphery of the artificial blood vessel 1 at the aortic arch part, the arc-shaped groove 3.2a is arranged at the part of the peripheral surface of the elastic left-hand thread ring 3.2 adjacent to the connecting ring 3.1, and the elastic left-hand thread ring 3.2 is provided with a rapid tightening structure.

When the self-retaining type blood vessel stent is used specifically, a proper implantation position (the implantation position can be positioned at the far end of an ascending aorta and the near end of a brachiocephalic artery) is selected at first, the stent artificial blood vessel 2 is inserted into the self-aortic blood vessel of a patient, and the insertion is stopped after the end part of the self-aortic blood vessel is close to a connecting ring 3.1 in the back-off type connector 3; then releasing the stent artificial blood vessel 2 to support the autologous aortic blood vessel outwards; and pulling the elastic reverse buckling ring 3.2 in the reverse buckling type connector 3 again to enable the elastic reverse buckling ring 3.2 to pass through the connecting ring 3.1 to be sleeved on the outer surface of the autologous aorta blood vessel in a turnover way, tightly hooping the autologous aorta blood vessel and the stent artificial blood vessel 2 by the elastic reverse buckling ring 3.2 through the elasticity of the elastic reverse buckling ring, and finally tightly hooping the elastic reverse buckling ring 3.2 through the rapid tightening structure, wherein the arc-shaped groove 3.2a corresponds to the edge of the connecting ring 3.1, so that the elastic reverse buckling ring 3.2 is convenient to hoop the autologous aorta blood vessel. In the above-mentioned operation process, left-hand thread formula connector 3 can be fixed in on the autologous aorta vascular outer wall fast left-hand thread for whole aorta composite support is reliably fixed, can not shift, and left-hand thread formula connector 3 still plays hemostatic effect simultaneously, need not to sew up consuming time, and the operation is convenient fast, can shorten dark low temperature greatly and stop cycle time, practices thrift the operating time, reduces the operation degree of difficulty, has improved patient's survival rate.

As shown in fig. 1 and 2, in this embodiment, the rapid tightening structure includes a tightening wire 3.3, a tightening wire groove 3.2b is disposed in the elastic reverse buckle ring 3.2, the tightening wire 3.3 is disposed in the tightening wire groove 3.2b, and the tightening wire groove 3.2b is provided with a leading-out hole for two ends of the tightening wire 3.3 to pass through. So set up, through the both ends of the tight line 3.3 of the taut tie-down 3.2 of elasticity fastening ring for autologous aorta blood vessel and support artificial blood vessel 2 are connected more closely. The bundling wire groove 3.2b is preferably arranged in a spiral shape extending along the length direction of the elastic reverse buckling ring 3.2, so that the elastic reverse buckling ring 3.2 can be fully tightened on the outer wall of the autologous aorta vessel.

As shown in fig. 2 and 3, in this embodiment, one end of the connection ring 3.1 facing the stent prosthesis 2 is provided with three support rods 3.4 uniformly distributed in the circumferential direction, the inner ends of the three support rods 3.4 are provided with bent sections 3.4a bent toward the center, and the inner ends of the three bent sections 3.4a abut against each other at the same point. So set up, three bracing piece 3.4 can play the auxiliary stay effect, avoids support artificial blood vessel 2 to be tied up the structure extrusion deformation fast by elasticity left-hand thread circle 3.2.

As shown in fig. 2 and 3, in the present embodiment, the bending section 3.4a is Z-shaped, and the contact points of the three bending sections 3.4a are close to the middle of the support rod 3.4. So set up, can improve the support intensity of three bracing piece 3.4.

As shown in fig. 2 and 3, in this embodiment, an annular protrusion 3.5 is disposed at one end of the connection ring 3.1 facing the stent prosthesis 2, the annular protrusion 3.5 is located at the periphery of the stent prosthesis 2, and a plurality of suture threading grooves 3.5a are uniformly disposed on the annular protrusion 3.5. Due to the arrangement, the autologous aorta blood vessel, the stent artificial blood vessel 2 and the connecting ring 3.1 can be connected in a suture mode, and the application range is further widened.

As shown in fig. 1, in the present embodiment, an artificial branch vessel 4 and an arterial perfusion branch vessel 5 are further disposed on the aortic arch artificial vessel 1. In the operation process, the arterial perfusion branch blood vessel 5 is communicated with an extracorporeal circulation device, the extracorporeal circulation device is opened, blood is perfused to the lower half of the body of a patient through the aortic arch part artificial blood vessel 1 and the support artificial blood vessel 2 in sequence from the arterial perfusion artificial branch blood vessel 4, then the artificial branch blood vessel 4 is communicated with the aortic arch branch blood vessel, the systemic perfusion can be carried out on the patient through the arterial perfusion branch artificial blood vessel, and finally the aorta proximal end anastomosis is completed. Because in the operation process, the brain is only perfused on one side, all visceral organs except the brain have the process of circulatory arrest ischemia and hypoxia, which can cause the postoperative occurrence of complications related to deep hypothermia circulatory arrest, including acute renal dysfunction, acute liver dysfunction, spinal cord ischemic paraplegia, blood coagulation dysfunction and the like, and the artificial branch blood vessel 4 and the artery perfusion branch blood vessel 5 are arranged, so that the whole body perfusion including the brain perfusion can be carried out on a patient in the whole operation process, thereby greatly reducing postoperative complications and improving the operation success rate.

In the invention, the aortic arch artificial blood vessel 1 and the stent artificial blood vessel 2 can be connected with the connecting ring 3.1 by bonding or integrally arranged. In order to allow the elastic turn-buckle 3.2 to pass over the connection ring 3.1 more easily, the elastic turn-buckle 3.2 is preferably provided with a plurality of circumferentially evenly distributed notches. The whole body of the reverse buckling type connector 3 is made of medical grade silica gel or rubber materials.

The above description is only for the preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention. Various modifications and alterations may occur to those skilled in the art without departing from the spirit and scope of the invention, and such modifications and alterations should be accorded the broadest interpretation so as to encompass all such modifications and alterations.