Active adaptation cushion block for exposing liver parenchyma cross section

Abstract

The invention discloses an active adaptation cushion block for exposing a liver parenchyma dissection surface, the active adaptation cushion block for exposing the liver parenchyma dissection surface comprises a cushion block main body, the cushion block main body is internally provided with a containing cavity, and the cushion block main body is suitable for being arranged below the liver in a cushion mode to lift the liver so as to expose the parenchyma dissection surface of the liver; the cushion block main body is a flexible material piece; the multiple columnar supporting bags are arranged in the containing cavity and arranged in the length direction of the cushion block body at intervals, and the columnar supporting bags are constructed to adjust the axial height of the columnar supporting bags by filling or discharging fluid; and the balloon is filled with fluid, and the balloon is respectively communicated with the plurality of columnar supporting bags. According to the active adaptation cushion block for exposing the liver parenchyma fracture surface, the liver can be lifted to expose the fracture surface, and the active adaptation cushion block has the advantages that an operation is facilitated, operation is convenient, and reliability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an active adaptive pad for exposing a liver parenchyma section. 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 an active adaptive pad for exposing the liver parenchyma section, which can lift the liver to expose the section, and has the advantages of facilitating surgery, easy operation, and high reliability.

[0005] To achieve the above-mentioned purpose, an active adaptive pad for exposing a liver parenchymal cross-section surface is proposed according to an embodiment of the present invention, the active adaptive pad for exposing a liver parenchymal cross-section surface comprising: a pad body, the pad body having a receiving cavity therein, the pad body being suitable for being arranged under the liver to lift the liver so as to expose the liver's parenchymal cross-section surface, the pad body being a piece of flexible material; a plurality of columnar support capsules, the plurality of columnar support capsules being arranged in the receiving cavity and at intervals along the length direction of the pad body, the columnar support capsule being configured to adjust the axial height of the columnar support capsule by filling or discharging a fluid; and a balloon, the balloon being filled with a fluid, the balloon being respectively connected to the plurality of columnar support capsules.

[0006] The active adaptive pad for exposing the liver parenchyma section according to the embodiment of the present invention can lift the liver to expose the section, and has the advantages of facilitating surgery, easy operation, and high reliability.

[0007] In addition, the active adaptive pad for exposure of liver parenchyma section 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 active adaptive pad for exposing the liver parenchyma section also includes a logic valve, which is connected to the balloon and connected to the plurality of columnar support sacs through cluster tubes to individually adjust the axial height of each columnar support sac.

[0009] According to one embodiment of the present invention, the number of the columnar support capsules is 5-9.

[0010] According to one embodiment of the present invention, the length of the cluster tube is 0.3-0.8 meters.

[0011] According to one embodiment of the present invention, the cushion block body is substantially in the shape of a triangular prism, the cushion block body has an upper side edge and two lower side edges, and the axial direction of the columnar support capsule is oriented in the up-down direction.

[0012] According to one embodiment of the present invention, an upper curved surface is formed at the upper side edge of the cushion block body, and the upper curved surface is concave at the middle part of the upper side edge in the length direction than at the two ends of the upper side edge in the length direction, and a lower curved surface is formed between the two lower side edges, and the lower curved surface is concave at the middle part of the two lower side edges in the normal direction than at the two sides of the two lower side edges in the normal direction.

[0013] 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 cushion block body perpendicular to the length direction.

[0014] According to one embodiment of the present invention, the outer surface of the pad body is formed as a hydrophobic and anti-slip micro-nano feature surface.

[0015] According to one embodiment of the present invention, the pad block body is made of a silicone material 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 cushion block body is 15-45 mm, and the length of the cushion block body 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 diagram of the structure of an active adaptive pad for exposing the liver parenchyma section according to an embodiment of the present invention.

[0020] Figure 2 It is a partial cross-sectional view of an active adaptive pad for exposing the liver parenchyma section according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic structural diagram of a pad body of an active adaptive pad for exposure of a hepatic parenchymal severance surface according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic structural diagram of a pad body of an active adaptive pad for exposure of a hepatic parenchymal severance surface according to an embodiment of the present invention.

[0023] Figure 5 It is a schematic structural diagram of a pad body of an active adaptive pad for exposure of a hepatic parenchymal severance surface according to an embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of a pad body of an active adaptive pad for exposure of a hepatic parenchymal severance surface according to an embodiment of the present invention being arranged under the liver.

[0025] Figure 7 It is a structural schematic diagram of a forming mold of a pad body of an active adaptive pad for exposure of a hepatic parenchymal severance surface according to an embodiment of the present invention.

[0026] Figure 8 It is a schematic diagram of the local microstructure of a forming mold of a pad body of an active adaptive pad for exposure of a hepatic parenchymal severance surface according to an embodiment of the present invention.

[0027] Figure numerals: active adaptive pad 1 for exposing liver parenchymal section, pad body 10, upper curved surface 11, lower curved surface 12, side curved surface 13, liver 20, parenchymal section 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, columnar support bag 40, balloon 50, logic valve 60, cluster tube 70. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The following describes an active adaptive pad 1 for exposure of liver parenchyma section according to an embodiment of the present invention with reference to the accompanying drawings.

[0032] like Figure 1-Figure 8 As shown, the active adaptive pad 1 for exposure of liver parenchyma section according to an embodiment of the present invention includes a pad body 10 , a plurality of columnar support capsules 40 and a balloon 50 .

[0033] The pad body 10 has a receiving cavity therein, and the pad body 10 is suitable for being placed under the liver 20 to lift the liver 20 to expose the substantial cross-section 21 of the liver 20. The pad body 10 is a flexible material. A plurality of columnar support capsules 40 are arranged in the receiving cavity and spaced along the length direction of the pad body 10. The columnar support capsules 40 are configured to adjust the axial height of the columnar support capsules 40 by filling or discharging fluid. The balloon 50 is filled with fluid, and the balloon 50 is connected to the plurality of columnar support capsules 40 respectively.

[0034] Specifically, if Figure 6 As shown, during the operation, the pad body 10 is placed into the patient's abdominal cavity and placed under the liver 20. The pad body 10 is used to lift the liver 20 so that the substantial section surface 21 of the liver 20 is continuously exposed.

[0035] When the balloon 50 is squeezed, the fluid inside the balloon 50 enters the multiple columnar support capsules 40 respectively, causing the columnar support capsules 40 to extend axially; conversely, when the balloon 50 is relaxed, the fluid inside the columnar support capsules 40 flows toward the balloon 50, causing the columnar support capsules 40 to contract axially. In this way, the height and shape of the cushion block body 10 can be adjusted to suit different liver conditions, so that the cross-section of the liver can achieve the best exposure effect.

[0036] According to the active adaptive pad 1 for exposing the liver parenchymal section surface of the embodiment of the present invention, by setting the pad body 10, the pad body 10 is suitable for being placed under the liver 20 to lift the liver 20 to expose the parenchymal section surface 21 of the liver 20. The pad body 10 can be used to lift the liver 20 and expose the parenchymal section surface 21 during surgery. Compared with the method of relying on manual lifting in the related art, the pad body 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, facilitating the operation and improving the efficiency of the operation. Compared with the method of sling suspension in the related art, the pad body 10 is simpler and more convenient to operate, more flexible to deploy, and can reduce the requirements for assistants.

[0037] Furthermore, the cushion block body 10 is made of a flexible material, which can further avoid squeezing of organs and the inferior vena cava, and further improve the reliability of the cushion block body 10 .

[0038] In addition, by setting a plurality of columnar support sacs 40 in the cushion block body 10, and setting a balloon 50 connected to the plurality of columnar support sacs 40, and filling the balloon 50 with fluid, the height and shape of the cushion block body 10 can be adjusted by squeezing or relaxing the balloon 50 during the operation, so that the cushion block body 10 can adapt to different liver conditions and achieve the best exposure effect of the liver section, thereby facilitating the operation and improving the efficiency of the operation.

[0039] Therefore, the active adaptive pad 1 for exposing the liver parenchyma section according to the embodiment of the present invention can lift the liver to expose the section, and has the advantages of facilitating surgery, easy operation, and high reliability.

[0040] The following describes an active adaptive pad 1 for exposure of liver parenchyma section according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0041] In some specific embodiments of the present invention, Figure 1-Figure 8 As shown, the active adaptive pad 1 for exposure of liver parenchyma section according to an embodiment of the present invention includes a pad body 10 , a plurality of columnar support capsules 40 and a balloon 50 .

[0042] Advantageously, if Figure 1 and Figure 2As shown, the active adaptive pad 1 for exposing the liver parenchyma section also includes a logic valve 60, which is connected to the balloon 50 and is respectively connected to the multiple columnar support capsules 40 through the cluster tube 70 to individually adjust the axial height of each columnar support capsule 40. Specifically, when the balloon 50 is squeezed, the fluid in the balloon 50 can be injected into the multiple columnar support capsules 40 in equal or unequal amounts through the control of the logic valve 60 to achieve individual adjustment of the heights of the multiple columnar support capsules 40. For example, if it is desired that the pad body 10 only increases in height without changing its shape, the logic valve 60 can control the fluid to be injected into the multiple columnar support capsules 40 in equal amounts, and the multiple columnar support capsules 40 are raised to the same height, so that the pad body 10 is raised in height. If the upper curved surface 11 of the cushion block body 10 is expected to increase the degree of depression, the logic valve 60 can control the injection of more fluid into the columnar support capsules 40 near the two ends, and less fluid into the columnar support capsules 40 near the middle, so that the height of the columnar support capsules 40 near the two ends is higher than the height of the columnar support capsules 40 near the middle, so that the two ends of the upper curved surface 11 of the cushion block body 10 are higher than the middle, and the depression of the upper curved surface 11 is increased. Conversely, if the upper curved surface of the cushion block body 10 is expected to reduce the degree of depression, the logic valve 60 can control the injection of more fluid into the columnar support capsules 40 near the middle, and less fluid into the columnar support capsules 40 near the two ends. In this way, the logic valve 60 can be used to independently control the fluid injection amount of multiple columnar support capsules 40, so as to flexibly adjust the height and shape of the cushion block body 10.

[0043] Optionally, the number of columnar support capsules 40 is 5-9. Specifically, the number of columnar support capsules 40 may be positively correlated with the length of the cushion block body 10. This can further facilitate active adaptation of the cushion block 1 to different liver conditions.

[0044] Specifically, the length of the cluster tube 70 is 0.3-0.8 meters. This makes it easy to put the cushion body 10 into the patient's body while keeping the logic valve 60 outside the patient's body, which is convenient for operating the active adaptive cushion 1.

[0045] Figure 1-Figure 8 FIG. 1 shows an active adaptive pad 1 for exposure of a liver parenchyma section according to an example of the present invention. Figure 1-Figure 6As shown, the pad body 10 is generally in the shape of a triangular prism, and the pad body 10 has an upper side edge and two lower side edges (the up and down 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), and the axial direction of the columnar support capsule 40 is oriented along the up and down direction. It should be understood here that "the pad body 10 is generally in the shape of a triangular prism" is only for the convenience of describing the general shape of the pad body 10, and is not limited to the curved surfaces and arc transitions thereon, and does not limit the unclear scope. In other words, the pad body 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. In this way, it is convenient for the pad body 10 to lift the liver 20 and expose the substantial separation surface 21. By filling or discharging fluid into or out of the columnar support capsule 40, the height and shape of the upper side edge can be adjusted to better adapt to different liver conditions.

[0046] Advantageously, if Figure 1-Figure 6 As shown, an upper curved surface 11 is formed at the upper side edge of the cushion block body 10, and the middle part of the upper curved surface 11 in the length direction of the upper side edge is concave at the two ends of the upper side edge in the length direction, and a lower curved surface 12 is formed between the two lower side edges, and the lower curved surface 12 is concave at the middle part 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. By arranging the upper curved surface 11 and the lower curved surface 12 on the cushion block body 10, the upper curved surface 11 in the middle part of the length direction of the upper side edge is concave at the two ends of the length direction of the upper side edge, and the lower curved surface 12 is concave at the middle part 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, realize the lifting of the liver 20, effectively expose the substantial separation surface 21, avoid the cushion block body 10 from sliding and avoid compressing the internal organs, and the lower curved surface 12 can avoid squeezing the inferior vena cava. In this way, the reliability of the cushion block body 10 can be improved.

[0047] Specifically, if Figure 4 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 parenchymal section 21. Figure 5 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.

[0048] More advantageously, if Figure 1-Figure 5 As 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 cushion block body 10. In this way, the surgeon can adjust the posture of the cushion block body 10 by holding the side curved surface 13 during the operation, which is convenient for adjusting the posture of the cushion block body 10 and preventing the cushion block body 10 from slipping due to body fluid contamination on the surface.

[0049] Specifically, if Figure 5 As shown, the diameter d1 of the arc shape is 20-25 mm. This can further facilitate the operator to adjust the posture of the cushion block body 10 through the side curved surface 13. 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. There are also arc transitions between the end face of the cushion block body 10 and the upper curved surface 11, between the end face and the lower curved surface 12, and between the end face and the side curved surface 13. This can further avoid compression of organs and blood vessels.

[0050] Furthermore, the outer surface of the pad body 10 is formed into a hydrophobic and anti-skid micro-nano characteristic surface. In this way, the surface of the pad body 10 has hydrophobicity and anti-skid properties, so that body fluids are not easily attached to the surface of the pad body 10, which is convenient for the operation and cleaning of the pad body 10, and the pad body 10 can establish van der Waals force adsorption with the smooth surface, so that the pad body 10 and the liver 20 are not easily relative to each other, thereby improving the lifting and holding effect of the liver 20 and avoiding displacement during the operation and affecting the operation.

[0051] Specifically, 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 center distance between 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.

[0052] Optionally, the pad body 10 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 pad body 10 to directly contact human organs, so that the pad body 10 has high temperature resistance, acid and alkali resistance, oxidation resistance, corrosion resistance and other characteristics, and enables the pad body 10 to support high temperature disinfection and low temperature plasma disinfection, thereby facilitating postoperative cleaning of the pad body 10.

[0053] Furthermore, the height of the cushion block body 10 is 15-45 mm, and the length of the cushion block body 10 is 100-130 mm, so that the cushion block body 10 can be more suitable for supporting the human liver and facilitate surgical operation.

[0054] Specifically, the manufacturing process of the cushion block body 10 is mold forming. Figure 5 As shown, the forming mold 30 of the cushion block body 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 6As shown, the inner surface of the molding die 30 that contacts the pad body 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Vacuum degassing: To avoid air from mixing into the flexible material after injection, which may lead to poor molding, vacuum degassing treatment is required.

[0059] Mold opening: open the mold and take out the cushion block body 10.

[0060] Rest: Rest the block body 10 and check the molding quality;

[0061] If stability needs to be further improved, secondary constant temperature vulcanization can be carried out.

[0062] If it is necessary to further improve the dustproof and water-repellent capability of the surface of the cushion block body 10 , UV treatment may be performed.

[0063] Specifically, a plurality of columnar support bags 40 may be integrally formed in the cushion block body 10 .

[0064] Other structures and operations of the active adaptive pad 1 for exposure of the liver parenchyma section according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0065] 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.

[0066] 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. An active adaptive pad for exposing the liver parenchyma section, characterized in that: include: A cushion block body, wherein the cushion block body has a receiving cavity therein, and the cushion block body is suitable for being placed under the liver to lift the liver so as to expose the substantial cross-section of the liver, and the cushion block body is made of a flexible material; A plurality of columnar support bladders, wherein the plurality of columnar support bladders are arranged in the accommodation cavity and at intervals along the length direction of the cushion block body, and the columnar support bladders are configured to adjust the axial height of the columnar support bladders by filling or discharging fluid; A balloon is filled with fluid and is connected to the plurality of columnar support balloons respectively.

2. The active adaptive pad for exposure of liver parenchyma section according to claim 1, characterized in that: It also includes a logic valve, which is communicated with the balloon and is respectively connected to the plurality of columnar support capsules through a cluster tube to individually adjust the axial height of each columnar support capsule.

3. The active adaptive pad for exposure of liver parenchyma section according to claim 1, characterized in that: The number of the columnar support capsules is 5-9.

4. The active adaptive pad for exposure of liver parenchyma section according to claim 2, characterized in that: The length of the cluster tube is 0.3-0.8 meters.

5. The active adaptive pad for exposure of liver parenchyma section according to claim 1, characterized in that: The cushion block body is generally in the shape of a triangular prism, and has an upper side edge and two lower side edges. The axial direction of the columnar support capsule is oriented in the up-down direction.

6. The active adaptive pad for exposure of liver parenchyma section according to claim 5, characterized in that: An upper curved surface is formed at the upper side edge of the pad block body, and the upper curved surface is concave at the middle part of the upper side edge in the length direction and at the two ends of the upper side edge in the length direction. A lower curved surface is formed between the two lower side edges, and the lower curved surface is concave at the middle part 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.

7. The active adaptive pad for exposure of liver parenchyma section according to claim 5, 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 in a concave arc shape in a cross section of the cushion block body perpendicular to the length direction.

8. The active adaptive pad for exposure of liver parenchyma section according to claim 1, characterized in that: The outer surface of the pad body is formed into a hydrophobic and anti-slip micro-nano feature surface.

9. The active adaptive pad for exposure of liver parenchyma section according to claim 1, characterized in that: The pad block body is made of a silicone material with a Shore hardness of 25HA-50HA and an elastic modulus of 2.0-2.6MPa.

10. The active adaptive pad for exposure of liver parenchyma section according to claim 1, characterized in that: The height of the cushion block body is 15-45 mm, and the length of the cushion block body is 100-130 mm.

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