Flexible cushion block for exposing broken surface of liver parenchyma

Abstract

The invention discloses a flexible cushion block for exposing a liver parenchyma fracture surface, the flexible cushion block is suitable for being cushioned below the liver to lift the liver so as to expose the parenchyma fracture surface of the liver, the flexible cushion block is a flexible material piece, the flexible cushion block is generally in a triangular prism shape, the flexible cushion block is provided with an upper side edge and two lower side edges, and the upper side edge and the lower side edge are arranged on the upper side edge and the lower side edge respectively. An upper curved surface is formed at the upper side edge of the flexible cushion block, the middle part, in the length direction of the upper side edge, of the upper curved surface is sunken to the two ends, in the length direction of the upper side edge, of the upper curved surface, and a lower curved surface is formed between the two lower side edges; and the middle parts of the lower curved surfaces in the normal direction of the two lower side edges are concaved on the two sides of the normal direction of the two lower side edges. According to the embodiment of the invention, the flexible cushion block for exposing the liver parenchyma fracture surface can lift the liver to expose the fracture surface, and has the advantages of convenience in operation, convenience in operation, high reliability and the like.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a flexible pad for exposing a hepatic parenchyma severance surface. Background Art

[0002] During liver resection, the left and right sections of the liver need to be clearly demarcated.

[0003] In the related art, in order to clearly demarcate the left and right cross-sections of the liver during liver resection surgery, manual lifting or suspension with a sling is used. In the manual lifting method, the surgeon needs to put one hand under the liver to touch and lift the liver. The surgeon not only needs to put his hand deeper under the liver, but also needs to keep the action for a long time during the operation. In addition, due to the heavy weight of the liver, the surgeon will be physically tired and mentally uncomfortable. In the suspension with a sling, the liver is suspended by a sling, but the operation is more difficult and requires a high level of assistants. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a flexible pad for exposing the hepatic parenchyma detachment surface, which can lift the liver to expose the detachment surface, and has the advantages of facilitating surgery, convenient operation, and high reliability.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the present invention, a flexible pad for exposing the liver parenchymal fracture surface is proposed, the flexible pad is suitable for being arranged under the liver to lift the liver to expose the parenchymal fracture surface of the liver, the flexible pad is a flexible material piece, the flexible pad is generally in the shape of a triangular prism, the flexible pad has an upper side edge and two lower side edges, an upper curved surface is formed at the upper side edge of the flexible pad, the upper curved surface is concave at the middle part in the length direction of the upper side edge than at the two ends in the length direction of the upper side edge, a lower curved surface is formed between the two lower side edges, the lower curved surface is concave at the middle part in the normal direction of the two lower side edges than at the two sides in the normal direction of the two lower side edges.

[0006] The flexible pad for exposing the hepatic parenchymal fracture surface according to the embodiment of the present invention can lift the liver to expose the fracture surface, and has the advantages of being convenient for surgery, easy to operate, and highly reliable.

[0007] In addition, the flexible pad for exposing the hepatic parenchyma severance surface according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the height difference between the highest point and the lowest point of the upper curved surface is 5-15 mm.

[0009] According to one embodiment of the present invention, the height difference between the highest point and the lowest point of the lower curved surface is 5-10 mm.

[0010] According to an embodiment of the present invention, a side curved surface is formed between each of the lower side edges and the upper side edges, and the side curved surface is a concave arc shape in a cross section of the flexible pad perpendicular to the length direction.

[0011] According to one embodiment of the present invention, the diameter of the arc is 20-25 mm.

[0012] According to an embodiment of the present invention, there are arc transitions between the upper curved surface and the side curved surface, and between the side curved surface and the lower curved surface.

[0013] According to one embodiment of the present invention, the outer surface of the flexible pad is formed as a hydrophobic and anti-slip micro-nano feature surface.

[0014] According to one embodiment of the present invention, the hydrophobic and anti-slip micro-nano feature surface includes multiple micro-nano features, each of which is a cylinder or a frustum with a diameter of 50-150 microns and a height of 20-50 microns, and the distance between the centers of two adjacent micro-nano features is 1.5-3 times the diameter of the micro-nano feature.

[0015] According to one embodiment of the present invention, the flexible pad is a silicone material piece with a Shore hardness of 25HA-50HA and an elastic modulus of 2.0-2.6 MPa.

[0016] According to one embodiment of the present invention, the height of the flexible pad is 15-45 mm, and the length of the flexible pad is 100-130 mm.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a schematic structural diagram of a flexible pad for exposing the hepatic parenchyma severance surface according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of a flexible pad for exposing the hepatic parenchyma severance surface according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic structural diagram of a flexible pad for exposing the hepatic parenchyma severance surface according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of a flexible pad for exposing the hepatic parenchymal severance surface according to an embodiment of the present invention, which is arranged under the liver.

[0023] Figure 5 It is a structural schematic diagram of a forming mold for a flexible pad for exposing a hepatic parenchymal severance surface according to an embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the local microstructure of a forming mold for a flexible pad for exposing the hepatic parenchyma severance surface according to an embodiment of the present invention.

[0025] Figure numerals: flexible pad 10 for exposing the liver parenchymal separation surface, upper curved surface 11, lower curved surface 12, side curved surface 13, liver 20, parenchymal separation surface 21, molding mold 30, mold upper shell 31, mold end plate 32, mold lower shell 33, glue injection port 34, micro-nano structure groove 35. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The following describes a flexible pad 10 for exposing the hepatic parenchyma severance surface according to an embodiment of the present invention with reference to the accompanying drawings.

[0030] like Figure 1-Figure 6 As shown, the flexible pad 10 for exposing the liver parenchymal detachment surface according to an embodiment of the present invention is suitable for being placed under the liver 20 to lift the liver 20 so as to expose the parenchymal detachment surface 21 of the liver 20. The flexible pad 10 is a flexible material piece. The flexible pad 10 is generally in the shape of a triangular prism. The flexible pad 10 has an upper side edge and two lower side edges (the upper and lower directions are shown by the arrows in the figure and are only for the convenience of expression, not for the limitation of the actual setting direction). An upper curved surface 11 is formed at the upper side edge of the flexible pad 10. The upper curved surface 11 is concave at the middle part in the length direction of the upper side edge than at the two ends in the length direction of the upper side edge. A lower curved surface 12 is formed between the two lower side edges. The lower curved surface 12 is concave at the middle part in the normal direction of the two lower side edges than at the two sides in the normal direction of the two lower side edges.

[0031] It should be understood that "the flexible pad 10 is generally in the shape of a triangular prism" is only for the convenience of describing the general shape of the flexible pad 10, and is not limited to the curved surface and arc transition thereon, and does not limit the unclear scope. In other words, the flexible pad 10 can be regarded as a triangular prism when the upper curved surface 11, the lower curved surface 12, the side curved surface 13 and the arc transition are not formed thereon.

[0032] Specifically, if Figure 4 As shown, during the operation, the flexible pad 10 is placed in the patient's abdominal cavity and placed under the liver 20. The flexible pad 10 is used to lift the liver 20 so that the substantial section surface 21 of the liver 20 is continuously exposed. The upper curved surface 11 can effectively fit the liver, lift the liver 20, effectively expose the substantial section surface 21, and prevent the flexible pad 10 from sliding and compressing the organs. The lower curved surface 12 can avoid squeezing the inferior vena cava.

[0033] According to the flexible pad 10 for exposing the hepatic parenchymal detachment surface of the embodiment of the present invention, the flexible pad 10 is arranged so that the flexible pad 10 is suitable for being placed under the liver 20 to lift the liver 20 to expose the parenchymal detachment surface 21 of the liver 20. The flexible pad 10 can be used to lift the liver 20 and expose the parenchymal detachment surface 21 during surgery. Compared with the manual lifting method in the related art, the flexible pad 10 can continuously lift the liver 20 without the operator having to put his hand under the liver and keep the action for a long time, thus avoiding the operator's physical fatigue and psychological discomfort, and freeing the operator's hand to lift the liver, thus facilitating the operation and improving the efficiency of the operation. Compared with the suspension method using a sling in the related art, the flexible pad 10 is simpler and more convenient to operate, more flexible to deploy, and can reduce the requirements for assistants.

[0034] Furthermore, by providing an upper curved surface 11 and a lower curved surface 12 on the flexible pad 10, the upper curved surface 11 is concave at the middle of the upper side edge in the length direction and at the two ends of the upper side edge in the length direction, and the lower curved surface 12 is concave at the middle of the two lower side edges in the normal direction and at the two sides of the two lower side edges in the normal direction, the upper curved surface 11 can effectively fit the liver, lift the liver 20, effectively expose the parenchymal section 21, avoid the flexible pad 10 from sliding and avoid compressing the organs, and the lower curved surface 12 can avoid squeezing the inferior vena cava. Thus, the reliability of the flexible pad 10 can be improved.

[0035] In addition, the flexible pad 10 is made of flexible material, which can further avoid squeezing the internal organs and the inferior vena cava, and further improve the reliability of the flexible pad 10.

[0036] Therefore, the flexible pad 10 for exposing the hepatic parenchymal fracture surface according to the embodiment of the present invention can lift the liver to expose the fracture surface, and has the advantages of facilitating surgery, easy operation, and high reliability.

[0037] The following describes a flexible pad 10 for exposing the hepatic parenchyma severance surface according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0038] Specifically, Figure 2 As shown, the height difference h1 between the highest point and the lowest point of the upper curved surface 11 is 5-15 mm. This makes the upper curved surface 11 more suitable for matching the shape of the liver 20, more suitable for fitting the liver 20, and more effectively revealing the substantial section 21.

[0039] More specifically, Figure 3 As shown, the height difference h2 between the highest point and the lowest point of the lower curved surface 12 is 5-10 mm. This can make the lower curved surface 12 more effectively avoid squeezing the inferior vena cava.

[0040] Advantageously, if Figure 1-Figure 3As shown, a side curved surface 13 is formed between each of the lower side edges and the upper side edges, and the side curved surface 13 is a concave arc shape in the cross section perpendicular to the length direction of the flexible pad 10. In this way, the surgeon can adjust the posture of the flexible pad 10 by holding the side curved surface 13 during the operation, which facilitates the adjustment of the posture of the flexible pad 10 and prevents the flexible pad 10 from slipping due to body fluid contamination on the surface.

[0041] Alternatively, if Figure 3 As shown, the diameter d1 of the arc is 20-25 mm. This can further facilitate the operator to adjust the position of the flexible pad 10 through the side curved surface 13.

[0042] More advantageously, if Figure 1-Figure 3 As shown, there are arc transitions between the upper curved surface 11 and the side curved surface 13, and between the side curved surface 13 and the lower curved surface 12. Specifically, there are arc transitions between the end surface of the flexible pad 10 and the upper curved surface 11, between the end surface and the lower curved surface 12, and between the end surface and the side curved surface 13. This can further avoid compression of organs and blood vessels.

[0043] Furthermore, the outer surface of the flexible pad 10 is formed into a hydrophobic and anti-skid micro-nano characteristic surface. In this way, the surface of the flexible pad 10 is hydrophobic and anti-skid, so that body fluids are not easily attached to the surface of the flexible pad 10, which is convenient for the operation and cleaning of the flexible pad 10, and the flexible pad 10 can establish van der Waals force adsorption with the smooth surface, so that the flexible pad 10 and the liver 20 are not easily relatively slid, thereby improving the lifting and holding effect of the liver 20 and avoiding displacement during the operation and affecting the operation.

[0044] Furthermore, the hydrophobic and anti-skid micro-nano feature surface includes a plurality of micro-nano features, each of which is a cylinder or a truncated cone with a diameter of 50-150 microns and a height of 20-50 microns, and the distance between the centers of two adjacent micro-nano features is 1.5-3 times the diameter of the micro-nano feature. This makes it easy to form a micro-nano feature surface with good hydrophobicity and anti-skid properties.

[0045] Optionally, the flexible pad is a silicone material with a Shore hardness of 25HA-50HA and an elastic modulus of 2.0-2.6MPa. This makes it easier for the flexible pad 10 to directly contact human organs, so that the flexible pad 10 has high temperature resistance, acid and alkali resistance, oxidation resistance, corrosion resistance and other characteristics, and enables the flexible pad 10 to support high temperature disinfection and low temperature plasma disinfection, thereby facilitating postoperative cleaning of the flexible pad 10.

[0046] Furthermore, the height of the flexible pad 10 is 15-45 mm, and the length of the flexible pad 10 is 100-130 mm, so that the flexible pad 10 can be more suitable for supporting the human liver and facilitate surgical operations.

[0047] Specifically, the manufacturing process of the flexible pad 10 is mold forming. Figure 5 As shown, the forming mold 30 of the flexible pad 10 includes a mold upper shell 31, two mold end plates 32, and a mold lower shell 33. The mold upper shell 31, the two mold end plates 32, and the mold lower shell 33 can be locked by threads to form a relatively closed cavity. One of the two mold end plates 32 is provided with a glue injection port 34 connected to the closed cavity. Figure 6 As shown, the inner surface of the molding die 30 that contacts the flexible pad 10 during the molding process has a plurality of arrayed micro-nano structure grooves 35, which can be formed by laser processing or other methods. Corresponding to the micro-nano features, the micro-nano structure grooves 35 are cylindrical or truncated cone-shaped grooves, the diameter d2 of the micro-nano structure grooves 35 is 50-150 microns, the depth h2 is 20-50 microns, and the center distance between two adjacent micro-nano structure grooves 35 is 1.5-3 times the diameter of the micro-nano structure grooves 35.

[0048] The molding process of the molding mold 30 needs to go through mold preparation, glue injection, vacuum degassing, constant temperature vulcanization, mold opening, rest, secondary constant temperature vulcanization, UV treatment and other links.

[0049] In the mold preparation stage: the molding mold 30 is assembled, the working surface of the molding mold 30 is cleaned, and a surface treatment is performed to facilitate demolding when necessary.

[0050] In the glue injection process: a glue injection machine is used to inject the flexible material into the molding die 30 through the glue injection port 34. The flexible material can be molded by constant temperature vulcanization, light curing, etc. The flexible material can be a single component material or a multi-component material mixed with a coagulant.

[0051] Vacuum degassing: To avoid air from mixing into the flexible material after injection, which may lead to poor molding, vacuum degassing treatment is required.

[0052] Mold opening: open the mold and take out the flexible pad 10.

[0053] Rest: Rest the flexible pad 10 and check the molding quality;

[0054] If stability needs to be further improved, secondary constant temperature vulcanization can be carried out.

[0055] If it is necessary to further improve the dustproof and water-repellent capability of the surface of the flexible pad 10 , UV treatment may be performed.

[0056] Other structures and operations of the flexible pad 10 for exposing the hepatic parenchyma severance surface according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flexible pad for exposing the hepatic parenchyma detachment surface, characterized in that: The flexible pad is suitable for being placed under the liver to lift the liver so as to expose the substantial cross-section of the liver. The flexible pad is a piece of flexible material. The flexible pad is generally in the shape of a triangular prism. The flexible pad has an upper side edge and two lower side edges. An upper curved surface is formed at the upper side edge of the flexible pad. The upper curved surface is concave at the middle part in the length direction of the upper side edge than at the two ends in the length direction of the upper side edge. A lower curved surface is formed between the two lower side edges. The lower curved surface is concave at the middle part in the normal direction of the two lower side edges than at the two sides in the normal direction of the two lower side edges.

2. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 1, characterized in that: The height difference between the highest point and the lowest point of the upper curved surface is 5-15 mm.

3. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 1, characterized in that: The height difference between the highest point and the lowest point of the lower curved surface is 5-10 mm.

4. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 1, characterized in that: A side curved surface is formed between each of the lower side edges and the upper side edges, and the side curved surface is a concave arc shape in a cross section of the flexible pad perpendicular to the length direction.

5. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 4, characterized in that: The diameter of the circular arc is 20-25 mm.

6. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 4, characterized in that: There are arc transitions between the upper curved surface and the side curved surface, and between the side curved surface and the lower curved surface.

7. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 1, characterized in that: The outer surface of the flexible pad is formed into a hydrophobic and anti-slip micro-nano feature surface.

8. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 7, characterized in that: The hydrophobic and anti-slip micro-nano feature surface includes a plurality of micro-nano features, each of which is a cylinder or a frustum with a diameter of 50-150 microns and a height of 20-50 microns, and the center distance between two adjacent micro-nano features is 1.5-3 times the diameter of the micro-nano feature.

9. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 1, characterized in that: The flexible pad is made of a silicone material with a Shore hardness of 25HA-50HA and an elastic modulus of 2.0-2.6MPa.

10. The flexible pad for exposing the hepatic parenchyma severance surface according to claim 1, characterized in that: The height of the flexible pad is 15-45 mm, and the length of the flexible pad is 100-130 mm.

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