A development device for positioning the proximal anastomosis of coronary artery bypass grafting

Abstract

The present invention discloses a developing device for positioning the proximal anastomosis of coronary artery bypass grafting. In the device, an open annular body surrounds the proximal anastomosis of coronary artery bypass grafting to develop the proximal anastomosis; a suture ring is arranged on the open annular body; a suture passes through the suture ring and is fixed on the aorta adventitia so that the open annular body is positioned around the proximal anastomosis of coronary artery bypass grafting. The developing device for positioning the proximal anastomosis of coronary artery bypass grafting significantly reduces the difficulty of angiography operation and improves the success rate of graft vessel angiography.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a developing device for positioning a proximal anastomotic site of a coronary artery bypass graft. Background Art

[0002] Coronary artery bypass grafting (CABG) is one of the most effective ways to treat coronary heart disease. However, patients may experience angina symptoms again due to restenosis of the graft vessels after CABG. Such patients often require symptom-driven coronary angiography to clarify the pathological conditions of the graft vessels and coronary arteries, and then guide treatment. The position of the proximal anastomosis of the graft vessels varies greatly, affected by factors such as the diameter and length of the ascending aorta, the presence of plaques, the operator's habits, concurrent aortic or valvular surgery, and the number of proximal anastomoses (mostly 1-2, and even 3 in special cases).

[0003] Compared with the original coronary artery opening, the change in the proximal anastomosis position of the graft vessel brings great difficulty to graft angiography during coronary angiography. Cardiologists often need to perform angiography multiple times to find the proximal anastomosis position during surgery, which not only significantly increases the radiation risk for doctors and patients, but also increases the risk of renal failure related to increased contrast agent intake in patients.

[0004] The information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0005] In view of the shortcomings or defects of the prior art, a developing device for positioning the proximal anastomosis of coronary artery bypass graft is provided, which surrounds the proximal anastomosis and is fixed on the ascending aorta wall to develop under fluoroscopy and guide angiography of the proximal anastomosis.

[0006] The purpose of the present invention is achieved through the following technical solutions.

[0007] A developing device for positioning the proximal anastomosis of a coronary artery bypass graft comprises: An open annular body, which surrounds the proximal anastomosis for coronary artery bypass grafting to visualize the proximal anastomosis; at least two sewing rings, the sewing rings being disposed on the open annular body; Sutures are passed through the sewing ring and fixed on the aortic adventitia so that the open annular body is circumferentially positioned at the proximal anastomosis for coronary artery bypass grafting.

[0008] In the imaging device for positioning the proximal anastomosis of coronary artery bypass grafting, the material of the open annular body includes barium wire, silver wire, gold wire or guide wire material.

[0009] In the developing device for positioning the proximal anastomosis of a coronary artery bypass graft, the cross-sectional size of the open annular body is larger than the diameter of the suture ring.

[0010] In the developing device for positioning the proximal anastomosis of a coronary artery bypass graft, the cross-section of the open annular body is circular with a diameter of 1 mm, and the diameter of the suture ring is 0.5 mm.

[0011] In the developing device for positioning the proximal anastomosis of coronary artery bypass grafting, the open annular body is a C-shaped structure, and when the open annular body is positioned around the proximal anastomosis of coronary artery bypass grafting, it presents an O-shaped structure.

[0012] In the developing device for positioning the proximal anastomosis of coronary artery bypass grafting, the inner diameter of the O-shaped structure is 4.0 mm and the inner diameter is 5.0 mm.

[0013] In the developing device for positioning the proximal anastomosis of a coronary artery bypass graft, a suture ring is respectively provided at the opening of the open annular body.

[0014] In the developing device for positioning the proximal anastomosis of a coronary artery bypass graft, a plurality of suture rings are evenly distributed on the open annular body.

[0015] In the development device for positioning the proximal anastomosis of a coronary artery bypass graft, a plurality of suture rings are distributed gradually and densely in the opening direction toward the open annular body.

[0016] In the imaging device for positioning the proximal anastomosis of a coronary artery bypass graft, the proximal anastomosis is the proximal anastomosis of a venous graft sutured to the ascending aorta or the proximal anastomosis of a radial artery sutured to the ascending aorta.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a stable imaging device for positioning the proximal anastomosis of coronary artery bypass grafting. The device is non-absorbable and permanently implanted in the body. When a patient needs to undergo coronary angiography due to obvious symptoms after bypass grafting, a cardiologist can directly locate the proximal anastomosis based on an "O" ring. The stereoscopic positioning of the anastomosis surrounding the anastomosis is conducive to directly locating the anastomosis during angiography. The diameter is larger than the diameter of the anastomosis and will not form a "tightening curse" effect on the anastomosis. The suture ring is used to fix on the aortic adventitia. After placement, the position of the imaging device is permanently fixed. The imaging device can significantly reduce the difficulty of angiography operation and improve the success rate of bridge vessel angiography.

[0018] The above description is only an overview of the technical solution of the present invention. In order to make the technical means of the present invention clearer and to achieve the extent that those skilled in the art can implement it according to the contents of the specification, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred specific embodiments below, various other advantages and benefits of the present invention will become clear to those of ordinary skill in the art. The drawings in the specification are only for the purpose of illustrating the preferred embodiments and are not considered to be limitations of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work. Moreover, the same reference numerals are used to represent the same components throughout the drawings.

[0020] In the attached picture: Figure 1 A schematic diagram of a coronary artery bypass graft to be positioned showing a preferred imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to the present invention; Figure 2 A preferred developing device for positioning the proximal anastomosis of a coronary artery bypass graft according to the present invention is shown = a schematic diagram of a positioned coronary artery bypass graft; Figure 3 A schematic structural diagram showing a preferred developing device for positioning the proximal anastomosis of a coronary artery bypass graft before being fixed according to the present invention; Figure 4 A schematic structural diagram of a preferred developing device for positioning the proximal anastomosis of a coronary artery bypass graft according to the present invention after being fixed is shown.

[0021] The present invention is further explained below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the specific embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0023] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is based on the general principles of the specification and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the attached claims.

[0024] To facilitate understanding of the embodiments of the present invention, several specific embodiments will be further explained below with reference to the accompanying drawings, and each of the accompanying drawings does not constitute a limitation on the embodiments of the present invention.

[0025] For a better understanding, Figures 1 to 4 As shown, a developing device for positioning the proximal anastomosis of a coronary artery bypass graft comprises: An open annular body 3, which surrounds the proximal anastomosis 1 for coronary artery bypass grafting to visualize the proximal anastomosis 1; at least two sewing rings 4, wherein the sewing rings 4 are arranged on the open annular body 3; The suture is passed through the suture ring 4 and fixed on the aorta adventitia so that the open annular body 3 is circumferentially positioned at the proximal anastomosis 1 for coronary artery bypass. The device is surrounded by the proximal anastomosis 1 and fixed on the ascending aorta wall. The proximal anastomosis 1 is developed under fluoroscopy to guide the angiography.

[0026] In a preferred embodiment of the development device for positioning the proximal anastomosis of coronary artery bypass grafting, the open annular body 3 is a C-shaped structure, and when the open annular body 3 is positioned around the proximal anastomosis 1 for coronary artery bypass grafting, it presents an O-shaped structure.

[0027] It should be noted that the key components and technical functions of the imaging device for positioning the proximal anastomosis of coronary artery bypass graft disclosed in the present invention are as follows: Open annular body 3: As the main structural part of the imaging device, it surrounds the proximal anastomosis of the coronary artery bypass graft. This component is developed in medical angiography or CT, so as to provide doctors with clear image guidance under fluoroscopy and help accurately locate the position of the proximal anastomosis. Preferably, it has certain size and shape characteristics (such as C-shaped, O-shaped) to ensure that there is no compression effect on the anastomosis and it can adapt to different thicknesses of the graft vessels; Suture ring 4: It is arranged on the open annular body 3 and is used to thread sutures to fix the imaging device to the aortic adventitia. The existence of the sewing ring allows the imaging device to be firmly maintained at a designated position to avoid displacement. The number, distribution (e.g., uniform distribution or gradual density) and relationship with the open annular body are repeatedly verified designs to ensure the best fixation effect and imaging performance; Sutures: The sutures that pass through the sewing ring 4 and are fixed on the aortic adventitia are the key factor in actually fixing the imaging device to the surgical site. In this way, it helps the imaging device to stably surround the proximal anastomosis without affecting blood circulation; The above key components work together to comprehensively achieve the following technical effects: the developing characteristics of the developing device allow doctors to accurately identify the position of the proximal anastomosis in fluoroscopic or CT images, reducing the search time; in addition, the combined use of suture rings and sutures ensures that the developing device is permanently fixed after surgery, and it will not easily shift even if the patient moves; in addition, since the developing device does not cause compression to the anastomosis, it will not affect blood flow, and it also reduces the risk of radiation and renal failure caused by multiple attempts at angiography; and the developing device can select an appropriate model according to the specific situation of the bridge vessel to ensure that it is suitable for different clinical needs. Therefore, the developing device disclosed by the present invention not only improves the efficiency and success rate of postoperative review of coronary artery bypass grafting, but also contributes to the safety of the operation and the comfort of the patient.

[0028] In a preferred embodiment of the imaging device for positioning the proximal anastomosis of coronary artery bypass grafting, the material of the open annular body 3 includes barium wire, silver wire, gold wire or guide wire material.

[0029] In a preferred embodiment of the development device for positioning the proximal anastomosis of a coronary artery bypass graft, the cross-sectional size of the open annular body 3 is larger than the diameter of the suture ring 4 .

[0030] In a preferred embodiment of the development device for positioning the proximal anastomosis of coronary artery bypass grafting, the cross-section of the open annular body 3 is circular with a diameter of 1 mm, and the diameter of the suture ring 4 is 0.5 mm.

[0031] In a preferred embodiment of the development device for positioning the proximal anastomosis of coronary artery bypass grafting, the inner diameter of the O-shaped structure is 4.0 mm and the inner diameter is 5.0 mm.

[0032] In a preferred embodiment of the imaging device for positioning the proximal anastomosis of a coronary artery bypass graft, a suture ring 4 is respectively provided at the opening of the open annular body 3 .

[0033] In a preferred embodiment of the imaging device for positioning the proximal anastomosis of a coronary artery bypass graft, a plurality of suture rings 4 are evenly distributed on the open annular body 3 .

[0034] In a preferred embodiment of the development device for positioning the proximal anastomosis of a coronary artery bypass graft, the plurality of suture rings 4 are distributed in a gradually denser manner in the opening direction toward the open annular body 3 .

[0035] In a preferred embodiment of the development device for positioning the proximal anastomosis of coronary artery bypass grafting, the proximal anastomosis 1 is the proximal anastomosis 1 of a venous graft sutured to the ascending aorta or the proximal anastomosis 1 of a radial artery sutured to the ascending aorta.

[0036] In one embodiment, there are three sewing rings 4 , which equally divide the open annular body 3 .

[0037] In one embodiment, the open annular body 3 is visualized in medical imaging.

[0038] In one embodiment, the open annular body 3 is visualized in CT.

[0039] In one embodiment, the thickness of the developing device 2 is set to be 1 mm in diameter; the thickness of the suture ring 4 is set to be 0.5 mm in diameter. The material of the developing device 2 is barium wire material.

[0040] like Figure 1 to Figure 2 As shown, during coronary artery bypass grafting, the proximal anastomosis 1 between the graft vessel and the ascending aorta is completed. A "C"-shaped imaging device 2 is taken, encircled around the anastomosis, and a 6-0 Prolene line is passed through the suture ring 4 of the imaging device 2 to fix it on the aortic adventitia. The device model is selected according to the thickness of the graft blood.

[0041] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0042] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A developing device for positioning the proximal anastomosis of a coronary artery bypass graft, characterized in that: These include, An open annular body, which surrounds the proximal anastomosis for coronary artery bypass grafting to visualize the proximal anastomosis; at least two sewing rings, the sewing rings being disposed on the open annular body; Sutures are passed through the sewing ring and fixed on the aortic adventitia so that the open annular body is circumferentially positioned at the proximal anastomosis for coronary artery bypass grafting.

2. A developing device for positioning the proximal anastomosis of a coronary artery bypass graft as claimed in claim 1, characterized in that: Preferably, the material of the open annular body includes barium wire, silver wire, gold wire or guide wire material.

3. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: The cross-sectional dimension of the open annular body is larger than the diameter of the sewing ring.

4. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: The cross section of the open annular body is circular with a diameter of 1 mm, and the diameter of the sewing ring is 0.5 mm.

5. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: The open annular body is a C-shaped structure, and when the open annular body is circumferentially positioned at the proximal anastomosis for coronary artery bypass grafting, it presents an O-shaped structure.

6. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 5, characterized in that: The inner diameter of the O-shaped structure is 4.0 mm and the inner diameter is 5.0 mm.

7. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: A sewing ring is respectively provided at the opening of the open annular body.

8. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: A plurality of sewing rings are evenly distributed on the open annular body.

9. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: The plurality of sewing rings are distributed in a gradually denser manner in an opening direction toward the open annular body.

10. The imaging device for positioning the proximal anastomosis of a coronary artery bypass graft according to claim 1, characterized in that: The proximal anastomosis is the proximal anastomosis of the venous bridge sutured to the ascending aorta or the proximal anastomosis of the radial artery sutured to the ascending aorta.

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