Surgical blade for cutting of obstructive hypertrophic cardiomyopathy tissue

Abstract

This utility model belongs to the field of surgical instrument technology and relates to a surgical blade for cutting tissue in obstructive hypertrophic cardiomyopathy. The utility model includes a surgical blade with an integral structure. The surgical blade of this utility model can be used with traditional surgical blade handles through a universal plug-in structure, improving the adaptability of the surgical blade. The cutting edge is located at the farthest point of the blade, while the sides and both ends of the cutting edge are unsharpened. That is, the sides and the corners of the cutting edge will not cut tissue. Therefore, during surgery for obstructive hypertrophic cardiomyopathy, the insertion and removal of the surgical blade, as well as during deep manipulation, can avoid cutting surrounding tissue. Furthermore, because the cutting edge is located at the farthest point of the blade, it is not necessary to cross the operating area during operation, thus protecting deeper tissues.

Description

Technical Field

[0001] This utility model belongs to the field of surgical instrument technology and relates to a surgical blade for cutting tissue in obstructive hypertrophic cardiomyopathy. Background Technology

[0002] In surgery, the choice of blade is crucial, directly impacting surgical outcomes and patient safety. Surgeons consider multiple factors when selecting a blade, such as the surgical site, type of surgery, patient condition, and personal experience. Common blade types include straight blades, curved blades, and acute-angled blades. Each shape has a corresponding designation; straight blades (e.g., 15, 20, 21, 22, 23) have a sharp edge on their underside and are suitable for straight incisions, such as abdominal skin cutting; curved blades (e.g., 12) have a more pronounced curve when viewed from the side and are suitable for more complex incisions, such as neck surgery and neurosurgery; while acute-angled blades (e.g., 11) are characterized by a sharp point at the tip and are suitable for deep cuts and open surgeries, such as thoracotomy and joint surgery.

[0003] Currently used scalpel blades share a common characteristic: the cutting edge is located on one side of the blade, while the other side is the back of the blade. In surgical procedures, surgeons frequently need to operate on deep tissues, and the side-mounted blade poses a risk of damaging tissues along the way. For example, in cardiac surgery for obstructive hypertrophic cardiomyopathy, after establishing cardiopulmonary bypass, the surgeon incises the aortic root and inserts the scalpel through the incision into the left ventricular outflow tract to cut away excess myocardial tissue. At this point, the aortic valve is located between the incision and the left ventricular outflow tract. Therefore, during the surgical cutting operation, it is an objective possibility that the side-mounted blade could damage normal tissues along the path from the incision to the operating area, including the aortic valve. To reduce the possibility of damaging normal tissues, careful and slow operation is usually required, which prolongs the surgical time. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, shortening the time required for cutting obstructive hypertrophic cardiomyopathy tissue, and reducing the possibility of surrounding tissue being cut by the surgical blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, comprising a surgical blade, the surgical blade being an integral structure, the surgical blade having a universal insertion structure for the handle, the surgical blade being strip-shaped, the surgical blade having two large plate surfaces and two small side surfaces, the front edge of the surgical blade being an arc-shaped cutting edge, the cutting edge being composed of two end bevel sections and a cutting edge section located between the two bevel sections; the bevel section smoothly transitions with the large plate surfaces, small side surfaces, and the cutting edge of the cutting edge; the two small side surfaces at the front end of the surgical blade each have an inwardly recessed waist structure that allows for greater movement during left and right swinging during cutting operations.

[0006] The surgical blade in this invention features a universal plug-in structure for the handle, allowing it to be used with traditional surgical blade handles and improving its compatibility. The cutting edge is located at the farthest point of the blade, while the sides and ends of the cutting edge are unsharpened. This means the sides and the corners of the cutting edge will not cut tissue. Therefore, during surgery for obstructive hypertrophic cardiomyopathy, the insertion and removal of the blade, as well as during deep manipulation, significantly reduces the likelihood of surrounding tissue being cut. Furthermore, because the cutting edge is located at the farthest point, the blade does not need to cross the operating area, thus protecting deeper tissues. This allows the surgeon to cut tissue more confidently, conveniently, and quickly, significantly shortening the time required for cutting obstructive hypertrophic cardiomyopathy tissue. The design also incorporates a narrow waist space, providing greater flexibility and a larger range of motion during cutting operations. This further facilitates tissue cutting for the surgeon and significantly reduces the time required for cutting obstructive hypertrophic cardiomyopathy tissue.

[0007] In the aforementioned surgical blade used for cutting obstructive hypertrophic cardiomyopathy tissue, the cutting edge is an outwardly convex arc shape, and the thickness of the cutting edge is less than the thickness of the cutting blade.

[0008] In the aforementioned surgical blade used for cutting obstructive hypertrophic cardiomyopathy tissue, the front edge of the cut section has an arc-shaped transition region.

[0009] In the aforementioned surgical blade used for cutting obstructive hypertrophic cardiomyopathy tissue, the inner side of the cut section has two symmetrical transition inner bevels along the center line of the cut section. One side of the transition inner bevel is connected to the cutting surface of the blade, and the other side is connected to the arc-shaped transition area.

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

[0011] In the aforementioned surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, the waist-reducing structure includes waist-reducing spaces recessed in the two small side faces.

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

[0013] In the aforementioned surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue, the universal insertion structure of the blade handle includes a mounting groove formed on the surgical blade, the mounting groove passing through the surgical blade.

[0014] In the aforementioned surgical blade used for cutting obstructive hypertrophic cardiomyopathy tissue, the cutting edge is an inwardly concave arc shape, and the thickness of the cutting edge is less than the thickness of the blade.

[0015] In the aforementioned surgical blade used for cutting obstructive hypertrophic cardiomyopathy tissue, a cutting space is formed between the blunt end and the inwardly concave arc-shaped cutting edge.

[0016] In summary, compared with existing technologies, the advantages of this invention are: high adaptability of the surgical blade; less chance of cutting surrounding tissues when the surgeon cuts the tissue, thus allowing the surgeon to cut the tissue more quickly, which not only shortens the time required to cut obstructive hypertrophic cardiomyopathy tissues, but also effectively protects surrounding tissues.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Example 1.

[0019] Figure 2 This is a front structural diagram of Example 1.

[0020] Figure 3 This is a schematic diagram of the structure from another direction of Embodiment 1.

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

[0022] Figure 5 This is a front structural diagram of Example 2.

[0023] Figure 6 This is a schematic diagram of the structure from another direction in Embodiment 2.

[0024] In the diagram: 1. Surgical blade; 2. Universal insertion structure for the handle; 3. Assembly slot; 4. Large plate surface; 5. Small side surface; 6. Blade section; 7. Buttress section; 8. Arc-shaped transition area; 9. Inner bevel of the transition; 10. Outer bevel of the transition; 11. Edge section; 2. Waist-reducing structure; 3. Waist-reducing space; 4. Cutting space. Detailed Implementation

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

[0026] Example 1: As Figure 1-4 As shown, a surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue includes a surgical blade 1, which is a one-piece structure. The surgical blade 1 has a universal insertion structure 2 for the handle. The surgical blade 1 is strip-shaped and has two large plate surfaces 3 and two small side surfaces 4. The front edge of the surgical blade 1 is an arc-shaped cutting edge 5, which consists of a striking section 5a at both ends and a cutting edge section 5b between the two striking sections 5a. The striking section 5a smoothly transitions to the large plate surface 3, the small side surfaces 4, and the cutting edge 5. The two small side surfaces 4 at the front end of the surgical blade 1 each have a waist-retracting structure 6 that is recessed inward and has a larger range of motion when swinging left and right during cutting operations.

[0027] In this embodiment, the surgical blade 1 can be used with traditional surgical blade handles via the universal insertion structure 2, 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 sides and both ends of the cutting edge 5 are unsharpened. That is, the sides and the corners of the cutting edge 1 will not cut tissue. Therefore, during the surgery for obstructive hypertrophic cardiomyopathy, the insertion and removal of the surgical blade 1, as well as during deep operations, can avoid cutting surrounding tissues. On the other hand, since the cutting edge 5b is located at the farthest end of the blade, it is not necessary to cross the operating area during operation, thus protecting deeper tissues.

[0028] The blade tip has a symmetrical structure, as per the instruction manual. Figure 2 As shown by the dashed line, it is symmetrical along the central plane.

[0029] Combination Figure 1-4 As shown, the cutting edge of the cutting edge 5b is an outwardly convex arc shape, and the thickness of the cutting edge 5b is less than the thickness of the cutting edge of the cutting edge 5b.

[0030] Specifically, during deep cutting operations, the outwardly protruding arc-shaped cutting edge section 5b allows for more precise cutting with high control accuracy. The thickness of the cutting edge section 5b is less than the thickness of the cutting edge section 5b, resulting in high structural strength.

[0031] Combination Figure 1-4As shown, the front edge of the truncated section 5a has an arc-shaped transition region 5a1.

[0032] In this embodiment, the front edge of the striking section 5a has an arc-shaped transition area 5a1, which is not sharpened. The striking section 5a is symmetrically arranged on both sides of the cutting edge section 5b, so that the side of the blade has no cutting edge, thus protecting the surrounding tissue from being cut.

[0033] The inner side of the stubby section 5a has two symmetrical transition inner bevels 5a2 along the center line of the cutting edge section 5b. One side of the transition inner bevel 5a2 is connected to the cutting edge of the blade part 5, and the other side is connected to the arc-shaped transition area 5a1. The outer side of the stubby 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-reducing structure 6 includes a waist-reducing space 6a that is recessed in the two small side surfaces 4.

[0034] In this embodiment, the inner beveled surface 5a2 and the cutting edge 5 form a V-shaped transition, which is concave inward to avoid protrusions affecting the cutting operation. The outer beveled surface 5a3 and the arc-shaped transition area 5a1 transition smoothly to form a better transition surface. Moreover, the transition area is not sharpened and has no cutting edge, which protects the surrounding tissue from being cut. The waist space 6a provides a better flexible operating space during the cutting operation and has a larger range of motion for left and right movement.

[0035] Combination Figure 2 As shown, the universal insertion structure 2 for the knife handle includes an assembly groove 2a formed on the surgical blade 1, and the assembly groove 2a passes through the surgical blade 1.

[0036] In this embodiment, in the cardiac surgical treatment of obstructive hypertrophic cardiomyopathy, the scalpel blade 1 and the scalpel handle are assembled through the assembly groove 2a, adopting a detachable structure to reduce costs.

[0037] 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 cutting edge 5b is in the shape of an inwardly concave arc, the thickness of the cutting edge 5b is less than the thickness of the cutting edge of the cutting edge 5b, and a cutting space 10 is formed between the blunt end 5a and the inwardly concave arc-shaped cutting edge 5b.

[0038] In this embodiment, the cutting edge 5b has two shapes: one is an inwardly concave inner arc shape as shown in this embodiment, and the other is an outwardly convex outer arc shape as shown in Embodiment 1. At the beginning of cutting, the inwardly concave inner arc shape is used, which, together with the cutting space 10, forms a large cutting area, resulting in high cutting efficiency.

[0039] The blade tip has a symmetrical structure, as per the instruction manual. Figure 5As shown by the dashed line, it is symmetrical along the central plane.

[0040] The working principle of this utility model 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 establishing cardiopulmonary bypass for the patient, the aortic root is cut open, and the surgical blade 1 is inserted into the left ventricular outflow tract through the incision. The cutting edge 5b has two shapes: one is an inwardly concave inner arc shape, and the other is an outwardly convex outer arc shape. At the beginning of the cutting, the inwardly concave inner arc shape is used, in conjunction with the cutting space 10. The large cutting area results in high cutting efficiency. Subsequently, the outwardly protruding cutting edge segment 5b allows for more precise cutting and high control accuracy. When cutting excess myocardial tissue with the 5b cutting edge segment, the blunt end segment 5a has no cutting edge, protecting surrounding tissue from being cut. Secondly, the cutting edge is located at the furthest point, eliminating the need to cross the operating area during operation, thus protecting deeper tissues and preventing damage to normal tissue along the route from the incision to the operating area, including the aortic valve. This enhances safety and precision.

[0041] During deep cutting operations, the outward-protruding cutting edge section 5b allows for more precise cutting and higher control accuracy.

[0042] The inner beveled surface 5a2 and the cutting edge 5 form a V-shaped transition, which is concave inward to avoid protrusions that may affect the cutting operation. The outer beveled surface 5a3 and the arc-shaped transition area 5a1 transition smoothly to form a better transition surface. Moreover, the transition area is not sharpened and has no cutting edge, which protects the surrounding tissue from being cut. The waist space 6a provides a better flexible operating space during the cutting operation and has a larger range of motion for left and right movement.

[0043] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0044] Although this article frequently uses terms such as surgical blade 1, universal insertion structure for handle 2, assembly groove 2a, large plate surface 3, small side surface 4, cutting edge 5, striking end section 5a, arc-shaped transition area 5a1, inner beveled transition surface 5a2, outer beveled transition surface 5a3, cutting edge section 5b, waist-reducing structure 6, waist-reducing space 6a, and cutting space 10, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A surgical blade for cutting tissue in obstructive hypertrophic cardiomyopathy, comprising a surgical blade (1), the surgical blade (1) being an integral structure, the surgical blade (1) having a universal insertion structure (2) for the handle, the surgical blade (1) being strip-shaped, characterized in that, The scalpel blade (1) has two large plates (3) and two small side plates (4). The front edge of the scalpel blade (1) is an arc-shaped blade (5). The blade (5) consists of a slit section (5a) located at both ends and a cutting edge section (5b) located between the two slit sections (5a). The slit section (5a) smoothly transitions with the blade surfaces of the large plates (3), small side plates (4) and blade (5). The two small side plates (4) at the front end of the scalpel blade (1) are provided with a waist-retracting structure (6) that is recessed inward and has a larger range of motion when swinging left and right during cutting operations.

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

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

4. The surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue according to claim 3, characterized in that, The inner side of the stub 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 of the blade part (5), and the other side is connected to the arc-shaped transition area (5a1).

5. The surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue according to claim 4, characterized in that, The outer side of the truncated section (5a) has a transitional outer slope (5a3), one side of which 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 obstructive hypertrophic cardiomyopathy tissue according to claim 4, characterized in that, The waist-cinching structure (6) includes waist-cinching spaces (6a) recessed inward from the two small side surfaces (4).

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

8. The surgical blade for cutting obstructive hypertrophic cardiomyopathy tissue according to any one of claims 1-6, characterized in that, The universal insertion structure (2) of the knife handle includes a mounting groove (2a) opened on the surgical blade (1), and the mounting groove (2a) passes through the surgical blade (1).

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

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

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