Biological patch cutter for cardiac surgery

Abstract

The utility model relates to a biological patch cutter for cardiac surgery, which comprises a first fixing disc and further comprises a limit ring fixed at the top end of the first fixing disc; the cutting mechanism penetrates through the limiting ring, the cutting mechanism comprises a moving rod, the moving rod penetrates through the limiting ring, the bottom of the moving rod penetrates through the first fixing disc, and electric telescopic cylinders are installed at the bottoms of the two sides of the moving rod; according to the cutting device, the positions of the micro motor and the cutting disc can be adjusted through the electric telescopic cylinder, so that cutting of different sizes is achieved, after cutting is completed, the cutting disc can be adjusted to be attached to the inner wall of a cutting face, the cutting disc can be adjusted to be attached to the inner wall of the cutting face, and the cutting efficiency is improved. Due to the fact that the dull polish disc is arranged on one side of the cutting disc, the cutting disc can rotate to drive the dull polish disc to polish the cutting face of the biological avoid, and therefore the cutting face is polished to be smooth, and roughness is removed.

Description

Technical Field

[0001] The utility model relates to the field of cardiac surgery, in particular to a biological patch cutter for cardiac surgery. Background Art

[0002] Using biological patch technology to repair ventricular septal defect is one of the commonly used surgical methods in cardiac surgery. Its purpose is to reduce the blood shunt from the left ventricle to the right ventricle, reduce the pressure in the right ventricle, and ultimately completely block the ventricular septum. The prior art mainly uses scissors to trim a patch that is much larger than the size of the ventricular septal defect to a size slightly larger than the ventricular septal defect and capable of completely covering the ventricular septal defect during surgery, cuts a small circular hole in the center of the trimmed patch, uses the remaining patch material to trim a circular patch to completely cover the small circular hole, and then sutures the circular patch and the small circular hole at four points: top, bottom, left, and right. The entire ventricular septal patch is sutured to the ventricular septal defect, and the circular patch is directed toward the left ventricle. The above is the prior art, and the prior art has the following defects: rough edges after trimming: the prior art cuts a small circular hole in the center of the trimmed patch, uses the remaining patch material to trim the circular patch to completely cover the small circular hole, but the edges of the trimmed circular hole and the circular patch are rough. When blood passes through the small circular hole and pushes the circular patch to flow to the left ventricle, it is easy to form a mural thrombus and block the channel.

[0003] According to the published patent 201820677429.8, the biological patch cutter for cardiac surgery includes a base and a cutting knife barrel. The base is a circular structure. Two lower handles are fixed on the outside of the base. The two lower handles are symmetrically arranged about the circle of the base. A convex ridge is fixed on the upper surface of each lower handle. A cutting cavity is provided on the upper surface of the base. In summary, the utility model has a reasonable structural design and is easy to use. It can quickly cut biological patches with different radii. The edges of the biological patches after cutting are smooth and the practicability is strong. In the process of realizing the utility model, the inventors found that at least the following problems in the prior art have not been solved. By adopting two cutting knives, the cutting process is convenient and quick, the cutting edge is smooth and flat, and when blood flows through the edge of the patch, it is not easy to form mural thrombus blockage The channel solves the problem of the prior art that a circular hole is cut in the center of the trimmed patch, and the circular patch is trimmed with the remaining patch material to completely cover the circular hole. However, the edges of the trimmed circular hole and the circular patch are rough. When blood passes through the circular hole and pushes the circular patch to flow to the left ventricle, it is easy to form a wall thrombus and block the channel. However, during use, the traditional cardiac surgery biological patch cutter uses two cutters for cutting, which can only reduce the rough surface produced during cutting. The roughness of the biological patch cutting surface is still unavoidable. Moreover, when it is necessary to cut biological patches of different sizes, the cutting position cannot be effectively limited, and the staff needs to manually adjust the cutting size, which affects the accuracy of the cutting size. For this reason, a new technical solution needs to be designed to solve the problem. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a biological patch cutter for cardiac surgery to solve the problem that the current traditional biological patch cutter for cardiac surgery uses two cutters for cutting, which can only reduce the rough surface generated during cutting. The roughness of the cut surface of the biological patch is still unavoidable. Moreover, when it is necessary to cut biological patches of different sizes, the cutting position cannot be effectively limited, and the staff needs to manually adjust the cutting size, which affects the technical problem of the accuracy of the cutting size.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a biological patch cutter for cardiac surgery, including a first fixing plate, and also including:

[0006] A limiting ring, fixed on the top of the first fixed plate;

[0007] The cutting mechanism runs through the limiting ring, and can not only cut the biological patch, but also polish the rough edge of the biological patch after cutting. The cutting mechanism includes a moving rod, which runs through the limiting ring, and the bottom of the moving rod passes through the first fixed plate. The bottoms of both sides of the moving rod are equipped with electric telescopic cylinders.

[0008] A groove is provided on the side of the electric telescopic cylinder away from the moving rod, a micro motor is installed inside the groove, a cutting disc is installed on the side of the micro motor away from the electric telescopic cylinder, and sanding discs are installed on both sides of the cutting disc.

[0009] Preferably, a connecting plate is fixed on the top of the moving rod, and handles are fixed on both sides of the connecting plate.

[0010] Preferably, first fixed cylinders are installed on both sides of the bottom of the first fixed plate, a second fixed cylinder passes through the bottom of the first fixed cylinder, a movable plate is fixed to one end of the second fixed cylinder located in the first fixed cylinder, a spring is fixed on the top of the movable plate, and the first fixed cylinder is fixed on the top of the spring.

[0011] Preferably, a pressure ring is provided at the bottom of the second fixing tube, slots are provided on both sides of the top of the pressure ring, a plug rod is inserted into the slot, and the second fixing tube is fixed on the top of the plug rod.

[0012] Preferably, support columns are fixed on both sides of the bottom of the first fixed plate, and a second fixed plate is fixed on the bottom of the support columns.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model combines an electric telescopic cylinder, a micro motor and a cutting disc. Not only can the electric telescopic cylinder be used to adjust the positions of the micro motor and the cutting disc to achieve cutting of different sizes, but also, after the cutting is completed, the cutting disc can be adjusted to fit the inner wall of the cutting surface. Since a grinding disc is provided on one side of the cutting disc, the grinding disc can be driven by the rotation of the cutting disc to grind the biologically avoided cutting surface, so that the cutting surface is polished and the roughness is removed, which solves the technical problem that the traditional biological patch cutter for cardiac surgery uses two cutting knives for cutting, which can only reduce the rough surface generated during cutting, and the cutting surface of the biological patch cannot avoid the roughness.

[0015] 2. The utility model, through the combination of a spring, a fixed tube and a pressure ring, can not only utilize the elastic force of the spring to drive the second fixed tube and the pressure ring to move downward to press and limit the biological patch, but also, by providing a pressure ring, the size of the pressure ring can be set to the ring size of the cutting. By replacing different pressure rings, the cutting position can be accurately adjusted according to the pressure ring, which solves the technical problem that when it is necessary to cut biological patches of different sizes, the cutting position cannot be effectively limited and the staff needs to manually adjust the cutting size, which affects the accuracy of the cutting size. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the groove of the utility model;

[0018] Figure 3 This is a schematic diagram of the side structure of the cutting disc of the utility model;

[0019] Figure 4 It is a schematic diagram of the fixed cylinder structure of the utility model.

[0020] In the figure: 1. first fixed plate; 101. support column; 102. second fixed plate; 2. limit ring; 201. moving rod; 202. electric telescopic cylinder; 203. connecting plate; 204. handle; 205. groove; 206. micro motor; 207. motor shaft; 208. cutting disk; 209. grinding disk; 3. first fixed cylinder; 301. second fixed cylinder; 302. pressure ring; 303. spring; 304. moving plate; 305. plug rod; 306. slot. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Example 1: A biopatch cutter for cardiac surgery, see Figures 1 to 4, including a first fixed plate 1, and also including: a limiting ring 2, fixed on the top of the first fixed plate 1; a cutting mechanism, which runs through the limiting ring 2, can not only cut the biological patch, but also grind the rough edge of the biological patch after cutting, the cutting mechanism includes a moving rod 201, the moving rod 201 runs through the limiting ring 2, and the bottom of the moving rod 201 passes through the first fixed plate 1, and electric telescopic cylinders 202 are installed at the bottom of both sides of the moving rod 201; the electric telescopic cylinder 202 is away from A groove 205 is provided on one side of the moving rod 201, and a micro motor 206 is installed inside the groove 205. A cutting disc 208 is installed on the side of the micro motor 206 away from the electric telescopic cylinder 202, and a grinding disc 209 is installed on the end of the cutting disc 208 away from the motor shaft 207. When it is necessary to cut the biological patch, first hold the handle 204 and the connecting disc 203 by hand, and drive the moving rod 201 to move up and down in the limiting ring 2 and the first fixed disc 1, and the moving rod 201 will drive the electric telescopic cylinder 202 , the micro motor 206 and the cutting disk 208 move up and down, and after the cutting disk 208 is moved into the pressure ring 302, the electric telescopic cylinder 202 is turned on, and the electric telescopic cylinder 202 drives the micro motor 206 and the cutting disk 208 to move. After the movement is completed, the micro motor 206 is turned on, and the micro motor 206 drives the cutting disk 208, and the biological patch at the bottom of the pressure ring 302 can be cut through the cutting disk 208. During the cutting process, the moving rod 201 can be rotated, and the moving rod 201 will drive the two cutting disks 208 to rotate. After the cutting is completed, the cutting disk 208 can be driven to move through the electric telescopic cylinder 202 to resist the rough surface of the edge of the biological patch. At the position of rotating the two cutting disks 208, the rough surface is polished smooth by the frosting disk 209 set on one side of the cutting disk 208, which solves the technical problem that the traditional biological patch cutter for cardiac surgery uses two cutters for cutting, which can only reduce the rough surface generated during cutting, and the cutting surface of the biological patch still cannot avoid the roughness.

[0023] For details, see Figure 1 A connecting plate 203 is fixed on the top of the moving rod 201 , and handles 204 are fixed on both sides of the connecting plate 203 .

[0024] For further information, see Figure 4The first fixing cylinder 301 is installed on both sides of the bottom of the first fixing disk 1, and the second fixing cylinder 301 runs through the bottom of the first fixing cylinder 3, and a movable plate 304 is fixed at one end of the second fixing cylinder 301 located in the first fixing cylinder 3, and a spring 303 is fixed on the top of the movable plate 304, and the first fixing cylinder 3 is fixed on the top of the spring 303. The elastic force of the spring 303 can drive the second fixing cylinder 301 and the pressure ring 302 to move downward, and the biological patch is pressed and limited. Moreover, by providing the pressure ring 302, the size of the pressure ring 302 can be set to the annular size of the cutting, and the position close to the inner wall in the pressure ring 302 is adjusted by the cutting disk 208, so that the cutting size can be directly adjusted. By replacing different pressure rings 302, the cutting position can be accurately adjusted according to the pressure ring 302, which solves the technical problem that when biological patches of different sizes need to be cut, the cutting position cannot be effectively limited and the staff needs to manually adjust the cutting size, which affects the accuracy of the cutting size.

[0025] It is worth noting that see Figure 4 A pressing ring 302 is provided at the bottom of the second fixed tube 301 , and slots 306 are provided on both sides of the top of the pressing ring 302 . An insertion rod 305 is inserted into the slot 306 , and the second fixed tube 301 is fixed on the top of the insertion rod 305 .

[0026] It is worth noting that see Figure 1 Support columns 101 are fixed on both sides of the bottom of the first fixed plate 1 , and a second fixed plate 102 is fixed on the bottom of the support columns 101 .

[0027] When using a biological patch cutter for cardiac surgery, first hold the handle 204 and the connecting disk 203 with your hands, and drive the moving rod 201 to move up and down in the limiting ring 2 and the first fixed disk 1. The moving rod 201 will drive the electric telescopic cylinder 202, the micro motor 206 and the cutting disk 208 to move up and down. After the cutting disk 208 is moved into the pressure ring 302, the electric telescopic cylinder 202 is turned on, and the electric telescopic cylinder 202 drives the micro motor 206 and the cutting disk 208 to move. After the movement is completed, the micro motor 206 is turned on, and the micro motor 206 drives the cutting disk 208. The biological patch at the bottom of the pressure ring 302 can be cut through the cutting disk 208. During the cutting process, the moving rod 201 can be rotated, and the moving rod 201 will drive The two cutting discs 208 rotate, and after the cutting is completed, the cutting discs 208 can be driven to move through the electric telescopic cylinder 202 to press against the rough surface of the edge of the biological patch. When the two cutting discs 208 are rotated, the rough surface is polished smooth by the frosting disc 209 set on one side of the cutting disc 208. The elastic force of the spring 303 can drive the second fixed cylinder 301 and the pressure ring 302 to move downward to press and limit the biological patch. Moreover, by providing the pressure ring 302, the size of the pressure ring 302 can be set to the annular size of the cutting. By adjusting the position close to the inner wall of the cutting disc 208 in the pressure ring 302, the cutting size can be directly adjusted. By replacing different pressure rings 302, the cutting position can be accurately adjusted according to the pressure ring 302.

[0028] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.

[0029] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A biopatch cutter for cardiac surgery, comprising a first fixing plate (1), characterized in that: Also includes: A limiting ring (2) is fixed on the top of the first fixed plate (1); The cutting mechanism is inserted into the limiting ring (2) and can not only cut the biological patch but also grind the rough edge of the biological patch to make it smooth after cutting. The cutting mechanism comprises a moving rod (201) which is inserted into the limiting ring (2) and the bottom of the moving rod (201) passes through the first fixed plate (1). The bottoms of both sides of the moving rod (201) are both equipped with electric telescopic cylinders (202). A groove (205) is provided on the side of the electric telescopic cylinder (202) away from the moving rod (201), a micro motor (206) is installed inside the groove (205), a cutting disc (208) is installed on the side of the micro motor (206) away from the electric telescopic cylinder (202), and sanding discs (209) are installed on both sides of the cutting disc (208).

2. A biopatch cutter for cardiac surgery as claimed in claim 1, characterized in that: A connection plate (203) is fixed on the top of the moving rod (201), and handles (204) are fixed on both sides of the connection plate (203).

3. A cardiac surgery biopatch cutter as claimed in claim 1, characterized in that: First fixed cylinders (3) are installed on both sides of the bottom of the first fixed plate (1); a second fixed cylinder (301) passes through the bottom of the first fixed cylinder (3); a movable plate (304) is fixed to one end of the second fixed cylinder (301) located inside the first fixed cylinder (3); a spring (303) is fixed to the top of the movable plate (304); and the first fixed cylinder (3) is fixed to the top of the spring (303).

4. A biopatch cutter for cardiac surgery as claimed in claim 3, characterized in that: A pressure ring (302) is provided at the bottom of the second fixed tube (301), and slots (306) are provided on both sides of the top of the pressure ring (302). An insertion rod (305) is inserted into the slot (306), and the second fixed tube (301) is fixed on the top of the insertion rod (305).

5. The biopatch cutter for cardiac surgery as claimed in claim 1, characterized in that: Support columns (101) are fixed on both sides of the bottom of the first fixed plate (1), and a second fixed plate (102) is fixed on the bottom of the support column (101).

Images