Heart valve suture with dacron patch and heart valve suture toolTechnical Field
The invention relates to the field of medical equipment, in particular to a heart valve suture with a dacron patch and a heart valve suture tool.
Background
Heart valve surgery is a surgical procedure used to treat heart valve disease. Heart valves are tissues located within the heart and function primarily to control the direction of blood flow within the heart. The purpose of the procedure is to restore normal function to the heart by repairing or replacing the damaged heart valve.
Valve sutures with polytetrafluoroethylene (i.e., PTFE) felt pads are often used in current valve surgery for suturing. The heart valve suture has the advantages that the pressure of a single suture on the ring can be dispersed, and the formation of paravalvular leakage is reduced. However, because of the thicker thickness of the polytetrafluoroethylene felt pad in the prior art, the effective orifice area is reduced after suturing the annulus, resulting in blood flow disturbance, resulting in an increase in the average pressure differential, thereby negatively affecting hemodynamic performance. Accordingly, there is a clinical need in the art for a heart valve suture that distributes the suture pressure while minimizing the impact on the orifice area.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to solve the problems that the thickness of the felt pad in the prior art is thicker, so that the effective flap opening area is reduced after suturing the valve annulus, the blood flow is disturbed, the average pressure difference is increased, and the hemodynamic performance is negatively influenced. To this end, the present invention provides a heart valve suture with a dacron patch, comprising:
the suture is suitable for the suturing or/and ligating work of soft tissues in heart valve replacement operation;
the dacron patch is made of polyester fiber and has a thickness ranging from 0.2mm to 0.4mm, so that the problem that the dacron patch reduces the effective orifice area while the pressure of a single suture line to a ring is dispersed through the dacron patch during suturing is solved.
Optionally, the dacron patches are strip-shaped structures with two arc-shaped surfaces at two ends, and any two adjacent dacron patches on the suture are attached and connected through the arc-shaped surfaces so as to prevent the adjacent dacron patches from being stacked.
Optionally, a through hole for the suture to pass through is arranged in the length direction of the terylene patch, and the through hole penetrates through the terylene patch in the radial direction;
The suture passes through the through hole along the U-shaped track, and the terylene patch is fixed on the suture.
Optionally, the thickness of the dacron patch is 0.3mm.
Optionally, the length of the dacron patch is 6mm, and the hole distance between two through holes on the dacron patch is 3.5mm.
Optionally, at least two dacron patches are arranged on each suture, and adjacent dacron patches are closely attached.
Optionally, the dacron patch is sterilized by using sterilized ethylene oxide.
Optionally, the arc-shaped surfaces at two ends of the terylene patch are semicircular surfaces.
A heart valve suturing tool comprises heart valve sutures with dacron patches and an annulus, wherein the dacron patches on the sutures are attached to the outer ring of the annulus in use.
The technical scheme of the invention has the following advantages:
1. The heart valve suture with the dacron patch provided by the invention comprises the following components:
the suture is suitable for the suturing or/and ligating work of soft tissues in heart valve replacement operation;
the dacron patch is made of polyester fiber and has a thickness ranging from 0.2mm to 0.4mm, so that the problem that the dacron patch reduces the effective orifice area while the pressure of a single suture line to a ring is dispersed through the dacron patch during suturing is solved.
According to the invention, the polyester patch made of polyester fiber replaces the polytetrafluoroethylene felt pad in the prior art, so that the thickness of the patch can be effectively reduced. Reducing the patch thickness can effectively solve the problems that the thickness of the existing felt pad is thicker, so that the effective flap opening area is reduced after suturing the valve annulus, the blood flow is disturbed, the average pressure difference is increased, and the hemodynamic performance is negatively influenced.
2. The heart valve suture with the dacron patches is of a strip-shaped structure with two ends being arc-shaped surfaces, and any two adjacent dacron patches on the suture are attached and connected through the arc-shaped surfaces so as to prevent the adjacent dacron patches from being stacked.
In the invention, the two ends of the terylene patch with the strip-shaped structure are provided with arc surfaces. Let two arbitrary dacron patches that are adjacent on the suture pass through the arcwall face laminating links to each other, the dacron patch of above-mentioned circular design can avoid the problem emergence that the patch piles up.
3. The heart valve suture with the dacron patch provided by the invention is characterized in that a through hole for the suture to pass is formed in the length direction of the dacron patch, the through hole penetrates through the radial direction of the dacron patch, and the suture passes through the through hole along a U-shaped track to fix the dacron patch on the suture.
According to the invention, through holes are formed in the length direction of the terylene patch, and the suture thread penetrates through the terylene patch along the radial direction of the terylene patch along the U-shaped track, so that the terylene patch is firmly and reliably penetrated and fixed on the suture thread. The structure has the advantages of firm and reliable fixation and convenient installation of the terylene patch.
4. The heart valve suture with the dacron patch provided by the invention has the advantages that the length of the dacron patch is 6mm, and the hole distance between two through holes on the dacron patch is 3.5mm. The terylene patch with the size can effectively disperse the pressure of a single suture line to the ring and reduce the formation of paravalvular leakage. Meanwhile, the problems that the effective flap opening area is reduced after the flap ring is sewn due to thicker terylene patch thickness, blood flow disorder is caused, and the average pressure difference is increased are avoided, so that the hemodynamic performance is negatively influenced are solved.
5. The heart valve suture with the dacron patch provided by the invention has the advantages that the dacron patch is sterilized by adopting sterilized ethylene oxide, so that the cleanness of the heart valve suture is effectively ensured.
6. The heart valve stitching tool comprises heart valve stitching lines with dacron patches and an annulus, wherein the dacron patches on the stitching lines are attached to the outer ring of the annulus in the use process. The heart valve suturing tool of the present invention includes heart valve sutures, which have all of the advantages of heart valve sutures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a three-dimensional structure of a heart valve suture with a dacron patch provided by the invention;
FIG. 2 is a schematic diagram of a heart valve suture structure in which adjacent dacron patches are attached by arcuate surfaces at the ends thereof;
FIG. 3 is an axial cross-sectional schematic view of a dacron patch provided by the invention;
FIG. 4 is a schematic illustration of a heart valve suturing procedure provided by the present invention;
FIG. 5 is a top view of the locations of through holes in a polyester patch provided by the present invention;
Fig. 6 is a schematic view of the connection structure of adjacent patches on a suture in the prior art.
Reference numerals illustrate:
1-suture, 2-terylene patch, 3-arc surface and 4-through hole.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1 and 4, fig. 1 shows a schematic perspective view of a heart valve suture with a dacron patch according to an embodiment of the present invention. Fig. 4 shows a schematic diagram of a heart valve suturing procedure in an embodiment of the invention.
A heart valve suture with a dacron patch, comprising:
a suture 1, which is suitable for the suturing or/and ligating work of soft tissues in heart valve replacement operation;
The suture comprises dacron patches 2, wherein the suture 1 passes through the dacron patches 2 and is fixed on the length direction of the suture 1, at least two dacron patches 2 are arranged on each suture 1, and adjacent dacron patches 2 are tightly attached. The dacron patch 2 is made of polyester fiber, and the thickness of the dacron patch 2 is 0.3mm, so that the problem that the dacron patch 2 reduces the effective flap opening area while the pressure of a single suture line to a ring is dispersed through the dacron patch 2 during suturing is solved. In this embodiment, the dacron patch 2 is sterilized by using sterilized ethylene oxide.
In this embodiment, referring to fig. 2 and 6, fig. 2 shows a schematic structural diagram of a heart valve suture in which adjacent dacron patches are attached by an arcuate surface at their ends in an embodiment of the present invention. Fig. 6 shows a schematic diagram of the connection structure of adjacent patches on a suture in the prior art. The dacron patch 2 is of a strip-shaped structure with two ends being arc-shaped surfaces 3, and any two adjacent dacron patches 2 on the suture line 1 are attached and connected through the arc-shaped surfaces 3 so as to prevent the adjacent dacron patches 2 from being stacked. The arc-shaped surfaces 3 at the two ends of the terylene patch 2 are semicircular surfaces.
In this embodiment, the dacron patch shown in fig. 3 is an axial cross-sectional schematic view. A top view of the locations of the through holes on the dacron patch as shown in fig. 5. The terylene patch 2 is provided with a through hole 4 for the suture 1 to pass through in the length direction, the through hole 4 penetrates through the terylene patch 2 in the radial direction, and the suture 1 passes through the through hole 4 along a U-shaped track to fix the terylene patch 2 on the suture 1. The length of the dacron patch 2 is 6mm, and the hole spacing between the two through holes 4 on the dacron patch 2 is 3.5mm. The suture 1 penetrates through the terylene patch 2 along the radial direction of the U-shaped track, so that the terylene patch 2 is firmly and reliably penetrated and fixed on the suture 1. The structure has the advantages of firm and reliable fixation and convenient installation.
Of course, the thickness of the dacron patch 2 in the heart valve suture is not particularly limited in this embodiment, and in other embodiments, the dacron patch 2 may be 0.2mm or 0.4mm, and other values.
Of course, the specific arc dimensions of the arc surfaces 3 at the two ends of the polyester patch 2 are not specifically limited in this embodiment, and in other embodiments, the arc surfaces 3 at the two ends of the polyester patch 2 may also have other arc values.
Of course, the length of the dacron patch 2 and the size of the through holes 4 on the dacron patch 2 are not particularly limited in this embodiment, in other embodiments, the length of the dacron patch 2 may be a size other than 6mm, and the hole spacing between two through holes 4 on the dacron patch 2 may be a size other than 3.5 mm.
Of course, the sterilization mode of the dacron patch 2 is not particularly limited in this embodiment, and in other embodiments, other sterilization modes may be adopted for the dacron patch 2.
Example 2
As shown schematically in the heart valve suturing procedure of fig. 4. The heart valve suturing tool comprises heart valve sutures with dacron patches and an annulus, wherein the dacron patches 2 on the sutures 1 are attached to the outer ring of the annulus in use.
A heart valve suture, comprising:
a suture 1, which is suitable for the suturing or/and ligating work of soft tissues in heart valve replacement operation;
The dacron patch 2 is made of polyester fiber, the thickness of the dacron patch 2 is 0.3mm, so that the pressure of a single suture line to a ring is dispersed through the dacron patch 2 during suturing, and meanwhile, the problem that the dacron patch 2 reduces the effective orifice area is solved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.