Local blood flow shield for aortic wall

Abstract

The present invention relates to a local blood flow shield for the aortic wall, belonging to the technical field of medical surgical instruments. The shield consists of two rods that are cross-hinged to each other and are divided into a pair of rod arms and a pair of rod handles that can be opened and closed relative to each other with the hinge point as the boundary. A chuck is provided at the end of one rod arm; a hood is provided at the end of the other rod arm, and a slidable sleeve is sleeved on the rod arm below the hood; the hood is composed of a telescopic skeleton and a diaphragm covering the skeleton; when the sleeve slides up or down along the other rod arm, it respectively sleeves the skeleton to make the hood form a contracted state or an expanded state; during the operation, when the pair of rod arms are closed and the hood is in the expanded state, the hood and the chuck respectively adhere to the inner surface and the outer surface of the local aortic wall and are opposed to each other. The shield can create a local bloodless surgical field through the enclosed three-dimensional space formed by the hood and the inner surface of the local aortic wall, and at the same time eliminate the sequelae caused by conventional clamping of the aortic wall.

Description

Technical Field

[0001] The present invention relates to a shield for local blood flow in the coronary artery and belongs to the technical field of medical surgical instruments. Background Art

[0002] Currently, during coronary artery bypass grafting, a side wall clamp or a blocking clamp is required to clamp the aortic wall so that the local part of the aortic wall is in a bloodless state, creating a bloodless surgical field for easy operation.

[0003] However, more and more studies and practices have found that many short-term and long-term complications after various coronary artery bypass graftings are caused by the method of clamping the aortic wall using the above-mentioned existing side wall clamps or blocking clamps. When the patient has aortic calcification, using the clamping method of the above-mentioned existing side wall clamps or blocking clamps will cause consequences such as rupture of the aortic wall or shedding of local calcified tissues, endangering the patient's life. It can be seen that the existing method of creating a bloodless surgical field by clamping has great drawbacks, and there is an urgent need for a safer blood flow blocking or isolation instrument for creating a bloodless surgical field. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to eliminate the use of the method of clamping the aortic wall during aortic surgery to create a local bloodless surgical field.

[0005] The technical solution proposed by the present invention to solve the above technical problem is: a local blood flow shield for the aortic wall, including two rods hinged to each other crosswise. The rods are divided into a pair of rod arms and a pair of rod handles that can open and close relative to each other with the hinge as the boundary. One end of one of the pair of rod arms is provided with a chuck; one end of the other of the pair of rod arms is provided with a hood, and a slidable sleeve is sleeved on the rod arm below the hood. The hood is mainly composed of a telescopic skeleton and a diaphragm covering the skeleton. When the sleeve slides up or down along the other of the pair of rod arms, it respectively sleeves the skeleton to make the hood form a contracted state or leaves the skeleton to make the hood form an expanded state. During the operation, when the pair of rod arms are closed and the hood is in the expanded state, the hood and the chuck respectively adhere to the inner surface and the outer surface of the local part of the aortic wall to be opposed to each other. The hood and the inner surface of the local part of the aortic wall enclose a closed three-dimensional space, and the fitting range of the chuck with the outer surface of the local part of the aortic wall is within the fitting range of the hood with the inner surface of the local part of the aortic wall.

[0006] In a further implementation manner of the above technical solution, a closure is provided at one end of the sleeve away from the hood.

[0007] In a possible implementation manner of the above technical solution, the skeleton is made of an elastic material.

[0008] In another possible implementation of the above technical solution, the framework is provided with hinge-type joints.

[0009] In the implementation of the above technical solution, the rod is approximately S-shaped, the hinge is the turning point of the S-shape, and the pliers arms, pliers handles, and sleeves are all arc-shaped.

[0010] In the implementation of the above technical solution, the closure is a soft plug, a silica gel body, or a rubber body.

[0011] In the implementation of the above technical solution, the hood is pyramid-shaped, the diaphragm wraps around the framework to form the side surface of the pyramid, and the chuck is U-shaped.

[0012] The beneficial effects of the present invention are as follows: Due to the special hood, its telescopic framework, and the diaphragm covering the framework, the local part of the aortic wall can be surrounded within the range between the alignment of the hood and the chuck. The hood and the chuck form a fitting rather than a clamping or pinching on the local part of the aortic wall. In particular, a closed three-dimensional space is formed between the inner surface of the hood and the local part of the aortic wall to isolate the aortic blood flow. Therefore, it realizes the observation and surgical operation environment of shielding the local blood flow of the aorta within this space range (that is, creating a local bloodless surgical field), while at the same time eliminating the sequelae caused by the conventional clamping of the aortic wall. Brief Description of the Drawings

[0013] The following further describes the local blood flow shield for the aortic wall of the present invention with reference to the drawings.

[0014] Figure 1 It is a schematic structural diagram of the local blood flow shield for the aortic wall in the embodiment.

[0015] Figure 2 It is Figure 1 A partial enlarged view when the hood and the chuck in

[0016] Figure 3 It is Figure 1 A partial enlarged view of the hood and the sleeve intercepted from

[0017] Figure 4 It is a schematic diagram of the contact state between the local blood flow shield for the aortic wall in the embodiment and the aortic wall during the operation.

[0018] Figure 5 It is a schematic diagram of another deformed structure of the hood and its framework structure in the embodiment. Detailed Description of the Embodiment Embodiment

[0019] The local blood flow shield for the aortic wall in this embodiment, as shown in Figure 1As shown, it includes two rods, which are cross-hinged to form a connection structure similar to a clamp or scissors. The two rods are divided into a pair of lever arms 30, 40 and a pair of lever handles 10, 20 that can be opened and closed relative to each other at their hinged joints. A U-shaped clamp 80 is provided at the end of one of the pair of lever arms (the first lever arm) 40; a pyramid-shaped (in this embodiment, a triangular pyramid) cover head 50 is provided at the end of the second of the pair of lever arms (the second lever arm) 30, and a slidable sleeve 70 is mounted on the lever arm 30 below the cover head 50. The cover head 50 is mainly composed of a telescopic frame 60 and a diaphragm 501 covering the frame 60, and the diaphragm 501 just forms the side of the pyramid.

[0020] In this embodiment, the two rods are approximately S-shaped curved rods, and the clamp arms, clamp handles and sleeves are all in arc shape. The end of the sleeve away from the cover head 50 is provided with a sealing object 701 such as a soft plug, a silicone body or a rubber body.

[0021] In this embodiment, the frame 60 may be made of elastic material or provided with hinged joints, in short, the frame may be deformed by bending or folding, so that when the sleeve 70 slides up or down along the second of the pair of lever arms (the second lever arm) 30, it respectively covers the frame 60 to form a contracted state of the cover head 50 and leaves the frame 60 to form an expanded state of the cover head 50. Specifically, the expansion of the frame 60 may be achieved by utilizing the elasticity of the frame itself or by providing a spring reset (when the sleeve 70 is contracted, the spring is pressed).

[0022] During surgery, when the aortic wall local blood flow shield of this embodiment is used, when the pair of lever arms 30, 40 are closed relative to each other and the sleeve 70 is slid to make the shield head 50 in an open state, Figure 4After the shown hood 50 and chuck 80 are respectively attached to the inner surface and the outer surface of a local part of the aortic wall 1 and are aligned with each other, at this time, the peripheral edge of the framework 60 and the U-shaped arms of the chuck 80 are respectively attached to the inner and outer surfaces of a local part of the aortic wall 1 (at this time, the inner surface of the local part of the aortic wall 1 is attached to the peripheral edge of the framework 60 under its tension); thus, a local part of the aortic wall 1 is surrounded between the hood 50 and the chuck 80, wherein the hood 50 and its diaphragm 501 and a local part of the aortic wall 1 enclose a closed three-dimensional space, and the fitting range of the chuck 80 with the outer surface of the local part of the aortic wall 1 is within the fitting range of the hood 50 with the inner surface of the local part of the aortic wall 1. The fitting area of the chuck with the outer surface of the local part of the aortic wall 1 is usually less than or equal to the fitting area of the hood 50 with the inner surface of the local part of the aortic wall 1. In this way, a bloodless (the closed three-dimensional space formed by the inner surface of the local part of the aortic wall 1 and the hood 50 shields the blood flow in the aorta) observation environment (i.e., a local bloodless operative field) can be realized for the local part of the aortic wall 1 between the hood 50 and the chuck 80, thus facilitating the performance of the bypass grafting operation on the local part of the aortic wall 1 at the alignment of the hood 50 and the chuck 80. In addition, when the blood outside the diaphragm of the hood 50 flows along the gap between the rod arm 30 and the sleeve 70, it is blocked by the seal 701 at the end of the sleeve away from the hood 50, thereby preventing the blood flow from flowing out along the rod arm 30 and the rod handle 10, and further creating a local bloodless operative field.

[0023] Obviously, in addition to the above-described embodiments of the present invention, those skilled in the art can make appropriate changes or substitutions, such as: 1) Design the framework 60 to be similar to an umbrella framework as Figure 4 shown. When the sleeve 70 leaves the framework 60 and the hood 50 forms an expanded state, the diaphragm 501 forms the side surface of the hemispherical hood 50. 2) The two rods can of course also be replaced with straight rods. 3) The chuck 80 can also be semicircular, circular, elliptical or other shapes.

[0024] In short, for the structural design of the hood 50, its framework 60 and diaphragm 501, other existing technologies can be adopted, but the technology of realizing the alignment and enclosure of the hood 50 and the chuck 80 to block the blood flow of the local part of the aortic wall to form a shield for non-clamping blood flow interruption is the unique concept of the present invention.

[0025] The above are only the preferred embodiments of the present invention, but the present invention is not limited thereto. All equivalent substitutions or equivalent changes made according to the concept and technical solutions of the present invention should be covered within the protection scope of the present invention.

Claims

1. A local blood flow shield for the aortic wall, comprising two rods cross-hinged to each other, the rods being divided into a pair of rod arms and a pair of rod handles that can open and close relative to each other with the hinge as the boundary, characterized in that :A chuck is provided at the end of one of the pair of rod arms; a hood is provided at the end of the other of the pair of rod arms, and a slidable sleeve is sleeved on the rod arm below the hood; the hood is mainly composed of a telescopic skeleton and a diaphragm covering the skeleton; when the sleeve slides up or down on the other of the pair of rod arms, it respectively sleeves the skeleton to make the hood in a contracted state or leaves the skeleton to make the hood in an expanded state; during the operation, when the pair of rod arms are closed and the hood is in the expanded state, the hood and the chuck respectively adhere to the inner surface and the outer surface of a local part of the aortic wall and are opposed to each other, the hood and the inner surface of the local part of the aortic wall enclose a closed three-dimensional space, and the fitting range of the chuck with the outer surface of the local part of the aortic wall is within the fitting range of the hood with the inner surface of the local part of the aortic wall.

2. The local blood flow shield for the aortic wall according to claim 1, characterized in that: A closure is provided at the end of the sleeve away from the hood.

3. The local blood flow shield for the aortic wall according to claim 1 or 2, characterized in that: The skeleton is made of an elastic material.

4. The local blood flow shield for the aortic wall according to claim 1 or 2, characterized in that: The skeleton is provided with hinge-type joints.

5. The local blood flow shield for the aortic wall according to claim 1 or 2, characterized in that: The rod is approximately S-shaped, the hinge is the turning point of the S-shape, and the rod arms, the rod handle and the sleeve are all arc-shaped.

6. The local blood flow shield for the aortic wall according to claim 2, wherein: The closure is a soft plug, a silica gel body or a rubber body.

7. The local blood flow shield for the aortic wall according to claim 1 or 2, characterized in that: The hood is pyramid-shaped, the diaphragm covers the skeleton to form the side surface of the pyramid, and the chuck is U-shaped.

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