Surgical knife blade for obstructive hypertrophic cardiomyopathy tissue cutting

Abstract

The invention belongs to the technical field of surgical instruments, and relates to a surgical blade for obstructive hypertrophic cardiomyopathy tissue cutting. The surgical knife comprises a surgical knife blade which is of an integrated structure. The surgical knife blade can be used in cooperation with a traditional surgical knife handle through the knife handle universal inserting structure, the adaptability of the surgical knife blade is improved, the knife edge part of the surgical knife blade is located at the farthest end of the knife blade, the two sides of the knife blade are not edged, the two ends of the knife edge part are not edged either, and in other words, the side face of the surgical knife blade and the end corner of the knife edge part cannot cut tissue; in the surgical process of obstructive hypertrophic cardiomyopathy, surrounding tissue can be prevented from being cut by the surgical blade when the surgical blade stretches in and takes out and deep operation is carried out, on the other hand, due to the fact that the cutting edge section is located on the farthest section of the blade, the cutting edge does not need to cross an operation area in the operation process, and the operation efficiency is improved. In this way, the deeper tissue is also protected.

Description

Technical Field

[0001] The invention belongs to the technical field of surgical instruments and relates to a surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue. Background Art

[0002] In surgery, blade selection is crucial, directly impacting both surgical effectiveness and patient safety. Surgeons need to consider multiple factors when selecting a blade, including the surgical site, procedure type, patient condition, and personal experience. Common blade types include straight blades, curved blades, and sharp-angle blades. Each blade shape has a corresponding number. Straight blades (such as No. 15, 20, 21, 22, and 23) have a sharp edge on the underside and are suitable for straight incisions, such as abdominal skin incisions. Curved blades (such as No. 12) have a more pronounced curvature when viewed from the side and are suitable for more complex incisions, such as neck surgery and neurosurgery. Sharp-angle blades (such as No. 11) feature a sharp angle at the front and are suitable for deep cuts and open surgeries, such as thoracotomy and joint surgery.

[0003] The blades currently in use have one thing in common: the cutting edge is on one side of the blade, and the other side is the back of the blade. During surgical operations, doctors often use scalpels to operate on deep tissues, and the side blades pose a risk of damaging tissues in the way. For example, in cardiac surgery for obstructive hypertrophic cardiomyopathy, after the patient establishes extracorporeal circulation, the surgeon cuts the aortic root and inserts the blade through the incision into the left ventricular outflow tract to cut excess myocardial tissue. At this time, the aortic valve is located between the incision and the left ventricular outflow tract. Therefore, during the surgical cutting operation, there is an objective possibility that the blade on the side of the blade will damage normal tissues between the incision and the operating area, including the aortic valve. To reduce the possibility of damaging normal tissue, careful and slow operation is usually required, which prolongs the operation time. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems and provide a surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, how to shorten the time required for cutting obstructive hypertrophic cardiomyopathy tissue, and how to reduce the possibility of surrounding tissue being cut by the surgical blade.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a surgical blade for cutting tissue for obstructive hypertrophic cardiomyopathy, comprising a surgical blade, the surgical blade being an integrated structure, the surgical blade being provided with a universal inserting structure for a handle, the surgical blade being in the form of a strip, the surgical blade having two large plate surfaces and two small side surfaces, the front edge of the surgical blade being an arc-shaped blade portion, the blade portion being composed of a notch section located at both ends and a blade section located between the two notch sections; the notch section and the large plate surface, the small side surface, and the blade surface of the blade portion all have smooth transitions; the two small side surfaces at the front end of the surgical blade are provided with a waist structure that is concave inward and allows a larger active area when swinging left and right during cutting operations.

[0006] The surgical blade of the present invention can be used with conventional surgical blade handles through a universal insertable structure, improving the adaptability of the surgical blade. The cutting edge of the surgical blade is located at the distal end of the blade, while the sides and ends of the blade are uncut. That is, the sides and corners of the blade do not cut tissue. Therefore, during surgery for obstructive hypertrophic cardiomyopathy, the possibility of the surgical blade cutting surrounding tissue during insertion and removal, as well as during deep operations, is significantly reduced. Furthermore, because the cutting edge is located at the distal end of the blade, the blade does not need to be moved across the operating area during operation, thus protecting deeper tissue. This allows the surgeon to cut tissue with greater confidence, convenience, and speed, significantly shortening the time required to cut tissue for obstructive hypertrophic cardiomyopathy. By providing a waist-constricting space, the present invention provides greater flexibility during cutting operations, allowing for a larger range of movement left and right, making it more convenient for the surgeon to cut tissue, significantly shortening the time required to cut tissue for obstructive hypertrophic cardiomyopathy.

[0007] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, the cutting edge of the cutting edge section is in the shape of an outwardly convex arc, and the thickness of the cutting edge section is smaller than the thickness of the blade of the cutting edge section.

[0008] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, the front end edge of the notch section has an arc-shaped transition area.

[0009] In the above-mentioned surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, the inner side of the blunt section has two transition inner bevels symmetrical along the center line of the cutting edge section, one side of the transition inner bevel is connected to the cutting edge of the blade portion, and the other side is connected to the arc-shaped transition area.

[0010] In the surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, the outer side of the blunt section has a transition outer bevel, one side of the transition outer bevel is connected to the small side surface, and the other side is connected to the arc-shaped transition area.

[0011] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, the waist structure includes a waist space that is recessed inwardly on two small side surfaces.

[0012] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, the small side surface is an inwardly concave arc surface.

[0013] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, the universal inserting structure of the handle includes an assembly groove provided on the surgical blade, and the assembly groove passes through the surgical blade.

[0014] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, the cutting edge of the cutting edge section is in the shape of an inwardly concave arc, and the thickness of the cutting edge section is smaller than the thickness of the blade of the cutting edge section.

[0015] In the above-mentioned surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, a cutting space is formed between the blunt-edged section and the inwardly concave arc-shaped cutting edge section.

[0016] In summary, compared with existing technologies, the advantages of the present invention are: the surgical blade has high adaptability; the surgeon is less likely to cut surrounding tissue when cutting tissue, and the surgeon can cut tissue more quickly, which not only shortens the time required for cutting obstructive hypertrophic cardiomyopathy tissue, but also effectively protects surrounding tissue.

[0017] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of Example 1.

[0019] Figure 2 It is a schematic diagram of the front structure of Example 1.

[0020] Figure 3 It is a structural diagram of another direction of Example 1.

[0021] Figure 4 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0022] Figure 5 It is a schematic diagram of the front structure of Example 2.

[0023] Figure 6 It is a structural diagram of another direction of Example 2.

[0024] In the figure: surgical blade 1, universal plug-in structure of the handle 2, assembly groove 2a, large plate surface 3, small side surface 4, blade portion 5, blunt section 5a, arc-shaped transition area 5a1, transition inner bevel 5a2, transition outer bevel 5a3, cutting edge section 5b, waist structure 6, waist space 6a, cutting space 10. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Example 1: Figure 1-4 As shown, a surgical blade for cutting tissue for obstructive hypertrophic cardiomyopathy includes a surgical blade 1. The surgical blade 1 is an integrated structure and is provided with a universal inserting structure 2 for the handle. The surgical blade 1 is in the form of a strip, having two large plate surfaces 3 and two small side surfaces 4. The front edge of the surgical blade 1 is an arc-shaped blade portion 5, which is composed of a notch section 5a located at both ends and a blade section 5b located between the two notch sections 5a; the notch section 5a and the large plate surface 3, the small side surface 4, and the blade surface of the blade portion 5 all have smooth transitions; the two small side surfaces 4 at the front end of the surgical blade 1 are provided with a waist structure 6 that is concave inward and allows a larger active area when swinging left and right during the cutting operation.

[0027] In this embodiment, the surgical blade 1 can be used with a conventional surgical handle through the universal inserting structure 2 of the handle, thereby improving the adaptability of the surgical blade. The cutting edge 5 of the surgical blade 1 is located at the farthest end of the blade, while the two sides of the blade and the ends of the cutting edge 5 are not sharp. That is, the side surfaces and the end corners of the cutting edge of the surgical blade 1 will not cut tissue. Therefore, during the surgical procedure for obstructive hypertrophic cardiomyopathy, the surgical blade 1 can be inserted and removed, and surrounding tissue can be prevented from being cut by the surgical blade when performing deep operations. On the other hand, because the cutting edge section 5b is located at the farthest end of the blade, it is not necessary to cross the operating area during the operation, thereby protecting deeper tissue. The front end of the blade is symmetrical. Figure 2 As shown by the dotted line, it is symmetrical along the center plane.

[0028] Combine Figure 1-4 As shown, the cutting edge of the cutting edge section 5b is in the shape of an arc convex outward, and the cutting edge thickness of the cutting edge section 5b is less than the blade thickness of the cutting edge section 5b.

[0029] Specifically, during deep cutting operations, the arc-shaped cutting edge of the cutting edge section 5b can perform more precise cutting with high control accuracy. The thickness of the cutting edge section 5b is smaller than the thickness of the blade of the cutting edge section 5b, and the structural strength is high.

[0030] Combine Figure 1-4 As shown, the front end edge of the pause section 5a has an arc-shaped transition area 5a1.

[0031] In this embodiment, the front edge of the notch section 5a has an arc-shaped transition area 5a1, which is not sharp. The notch section 5a is symmetrically arranged on both sides of the cutting edge section 5b, so that there is no cutting edge on the side of the blade, protecting the surrounding tissue from being cut.

[0032] The inner side of the notch section 5a has two transition inner bevels 5a2 symmetrically arranged along the center line of the cutting edge section 5b, one side of the transition inner bevel 5a2 is connected to the cutting edge surface of the blade portion 5, and the other side is connected to the arc-shaped transition area 5a1. The outer side of the notch section 5a has a transition outer bevel 5a3, one side of the transition outer bevel 5a3 is connected to the small side surface 4, and the other side is connected to the arc-shaped transition area 5a1. The waist structure 6 includes a waist space 6a that is recessed inwardly of the two small side surfaces 4.

[0033] In this embodiment, the transition inner bevel 5a2 forms a V-shaped transition with the blade surface of the blade portion 5, which is concave inward to avoid the occurrence of protrusions that affect the cutting operation. The transition outer bevel 5a3 smoothly transitions with the arc-shaped transition area 5a1 to form a better transition surface, and the transition area is not sharpened and has no blade, protecting the surrounding tissue from being cut. The waist space 6a can have better flexible operating space during the cutting operation, and has a larger activity area when moving left and right.

[0034] Combine Figure 2 As shown, the universal inserting structure 2 of the knife handle includes an assembly groove 2 a provided on the surgical blade 1 , and the assembly groove 2 a passes through the surgical blade 1 .

[0035] In this embodiment, in cardiac surgical treatment of obstructive hypertrophic cardiomyopathy, the surgical blade 1 and the surgical handle are assembled through the assembly groove 2a, adopting a detachable structure to reduce costs.

[0036] Example 2: Combination Figure 5-6 As shown, the basic structure and working principle of this embodiment are basically the same as those of embodiment 1. The difference is that the edge of the cutting edge segment 5b is in the shape of an inwardly concave arc, the thickness of the cutting edge segment 5b is less than the thickness of the blade of the cutting edge segment 5b, and a cutting space 10 is formed between the blunt edge segment 5a and the inwardly concave arc-shaped cutting edge segment 5b.

[0037] In this embodiment, the blade of the cutting edge section 5b has two forms, one is an inner arc shape that is concave inward as shown in this embodiment, and the other is an outer arc shape that is convex outward as shown in embodiment 1. When cutting at the beginning, the inner arc shape that is concave inward is used to form a large cutting area with the cutting space 10, which has high cutting efficiency. The front end of the blade is symmetrical. Figure 5 As shown by the dotted line, it is symmetrical along the center plane.

[0038] The working principle of the present invention is as follows: in the cardiac surgical treatment of obstructive hypertrophic cardiomyopathy, the surgical blade 1 and the surgical handle are assembled through the assembly groove 2a, adopting a detachable structure to reduce costs. After the patient is established with extracorporeal circulation, the aorta root is cut open, and the surgical blade 1 is inserted into the left ventricular outflow tract through the incision. The blade section 5b has two forms, one is an inner arc shape that is concave inward, and the other is an outer arc shape that is convex outward. When cutting, the inner arc shape is used to form a cutting space 10. The large cutting area has high cutting efficiency. Then, the outward-convex cutting edge section 5b is used to perform more precise cutting with high control accuracy. When the cutting edge section 5b is used to cut excess myocardial tissue, the blunt section 5a has no cutting edge, thus protecting the surrounding tissue from being cut. Secondly, the cutting edge is at the farthest section, so that the cutting edge does not need to cross the operating area during operation, and also protects deeper tissues, avoiding damage to normal tissues including the aortic valve on the way from the incision to the operating area during the cutting process, which has higher safety and accuracy. During deep cutting operations, the outward protruding cutting edge 5b allows for more precise cutting with high control accuracy. The transition inner bevel 5a2 forms a V-shaped transition with the blade surface of the blade portion 5, which is concave inward to avoid the occurrence of bulges that affect the cutting operation. The transition outer bevel 5a3 smoothly transitions with the arc-shaped transition area 5a1 to form a better transition surface. The transition area is not sharpened and has no blade, protecting the surrounding tissue from being cut. The waist space 6a can have better flexible operating space during the cutting operation, and has a larger activity area when moving left and right.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods without departing from the spirit of the present invention.

[0040] Although the present invention generally uses terms such as surgical blade 1, universal handle insertion structure 2, assembly groove 2a, large plate surface 3, small side surface 4, cutting edge portion 5, blunt section 5a, arcuate transition region 5a1, transition inner bevel 5a2, transition outer bevel 5a3, cutting edge section 5b, waist structure 6, waist space 6a, and cutting space 10, other terms are not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention. Interpreting them as any additional limitations would be contrary to the spirit of the present invention.

Claims

1. A surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy, comprising a surgical blade (1), wherein the surgical blade (1) is an integrated structure, a universal inserting structure (2) for a handle is provided on the surgical blade (1), and the surgical blade (1) is in the form of a strip sheet, characterized in that: The surgical blade (1) has two large plate surfaces (3) and two small side surfaces (4). The front edge of the surgical blade (1) is an arc-shaped blade portion (5). The blade portion (5) is composed of a notch section (5a) located at both ends and a blade section (5b) located between the two notch sections (5a). The notch section (5a) and the blade surfaces of the large plate surface (3), the small side surfaces (4), and the blade portion (5) all have smooth transitions. The two small side surfaces (4) at the front end of the surgical blade (1) are both provided with a waist structure (6) that is concave inward and can have a larger active area when swinging left and right during a cutting operation.

2. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 1, characterized in that: The cutting edge of the cutting edge section (5b) is in the shape of an outwardly convex arc, and the cutting edge thickness of the cutting edge section (5b) is smaller than the blade thickness of the cutting edge section (5b).

3. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 2, characterized in that: The front end edge of the pause section (5a) has an arc-shaped transition area (5a1).

4. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 3, characterized in that: The inner side of the blunt section (5a) has two transition inner bevels (5a2) symmetrical along the center line of the cutting edge section (5b), one side of the transition inner bevel (5a2) is connected to the cutting edge surface of the blade portion (5), and the other side is connected to the arc-shaped transition area (5a1).

5. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 4, characterized in that: The outer side of the pause section (5a) has a transition outer bevel (5a3), one side of the transition outer bevel (5a3) is connected to the small side surface (4), and the other side is connected to the arc-shaped transition area (5a1).

6. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 4, characterized in that: The waist-tightening structure (6) comprises a waist-tightening space (6a) which is recessed inwardly and is opened on two small side surfaces (4).

7. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to any one of claims 1 to 6, characterized in that: The small side surface (4) is an inwardly concave arc surface.

8. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to any one of claims 1 to 6, characterized in that: The universal inserting structure (2) for the knife handle comprises an assembly groove (2a) provided on the surgical blade (1), wherein the assembly groove (2a) passes through the surgical blade (1).

9. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 1, characterized in that: The cutting edge of the cutting edge section (5b) is in the shape of an inwardly concave arc, and the cutting edge thickness of the cutting edge section (5b) is less than the blade thickness of the cutting edge section (5b).

10. The surgical blade for cutting tissue of obstructive hypertrophic cardiomyopathy according to claim 9, characterized in that: A cutting space (10) is formed between the blunt edge section (5a) and the inwardly recessed arc-shaped cutting edge section (5b).

Images