Laparoscopic trocar seal assembly and method of processing same

Abstract

The embodiment of the present application provides a laparoscope puncture device sealing assembly and a processing method thereof, the sealing assembly comprising: a sealing fitting part, a first sealing ring and a second sealing ring. The sealing fitting part is provided with a sealing fitting hole and a plurality of first through holes, the first sealing ring is provided with a first fixed fitting hole, the second sealing ring is provided with a plurality of first fixed columns, and the first sealing ring and the second sealing ring are arranged on the two sides of the sealing fitting part. Each first fixed column is connected to the corresponding first fixed fitting hole through the corresponding first through hole, and the first fixed column and the first sealing ring are fixedly connected. The peripheral side edge of the sealing fitting part of the laparoscope puncture device sealing assembly of the present application is effectively fixed by the first fixed column, solving the problem that the sealing fitting part of the prior art only relies on interference fit, the product is prone to loosening of the edge of the sealing fitting part and air leakage due to vibration during transportation and thermal expansion and cold contraction of the weather, affecting the operation process of the clinical patient, and even causing postoperative complications of the patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laparoscopic puncture, in particular to a laparoscopic puncture device sealing assembly and a processing method thereof. BACKGROUND

[0002] The laparoscopic puncture device sealing assembly generally comprises a puncture sleeve, a sealing assembly and a puncture rod. The sealing assembly is generally arranged at the top of the puncture sleeve. When the puncture rod is inserted into the sealing assembly and the puncture sleeve, the sealing assembly can be sealingly sleeved on the puncture rod to close the insertion channel of the puncture rod, prevent foreign matters, especially infection sources, in the environment from entering the patient's body through the puncture sleeve, and prevent abdominal cavity gas from overflowing outward. In the related art, the sealing assembly comprises a shell and a sealing assembly arranged in the shell. The sealing assembly comprises a flexible and conical sealing fitting. The sealing fitting is used to sealingly sleeve the puncture rod when the puncture rod is inserted into the sealing assembly and the puncture sleeve. The sealing fitting is generally installed and fixed on the shell in an interference fit manner. The vibration of the product during transportation and the thermal expansion and contraction of the weather can easily cause the sealing assembly to loosen and leak, affecting the operation process of the clinical patient, and even causing postoperative complications of the patient. SUMMARY

[0003] To solve one of the above technical defects, the present application provides a laparoscopic puncture device sealing assembly and a processing method thereof to solve the problem that the edge of the sealing fitting is prone to loosen and leak in the prior art.

[0004] The present application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a laparoscopic puncture device sealing assembly, comprising:

[0006] a sealing fitting, a sealing fitting hole and a plurality of first through holes are arranged on the sealing fitting, each first through hole is located on the side of the sealing fitting hole, and each first through hole is sequentially and spacedly arranged along the edge of the sealing fitting;

[0007] a first sealing ring and a second sealing ring, a first fixed fitting hole is arranged on the first sealing ring, a plurality of first fixed columns are arranged on the second sealing ring, and the first sealing ring and the second sealing ring are arranged on both sides of the sealing fitting along the thickness direction;

[0008] In the connected state of the first sealing ring, the second sealing ring and the sealing fitting, each first fixed column is connected to the corresponding first fixed fitting hole through the corresponding first through hole, and the first fixed column and the first sealing ring are fixedly connected.

[0009] Optionally, in the state that the first sealing ring, the second sealing ring and the sealing fitting part are connected, the first fixed column extends out of the first fixed fitting hole, and one end of the first fixed column extending out of the first fixed fitting hole is hot melt connected with the first sealing ring.

[0010] Optionally, the first sealing ring is provided with a plurality of insertion shafts.

[0011] In the state that the first sealing ring, the second sealing ring and the sealing fitting part are connected, each of the insertion shafts is inserted into the corresponding first through hole.

[0012] Optionally, the sealing fitting part has a conical body and a circular ring body arranged on the outer side edge of the conical body.

[0013] The first through hole is arranged on the circular ring body.

[0014] The conical body has the sealing fitting hole.

[0015] The circular ring body is clamped and fixed between the first sealing ring and the second sealing ring.

[0016] Optionally, the laparoscope puncture device sealing assembly comprises a protection part, an annular shell and a third sealing ring.

[0017] The second through hole is arranged on the protection part.

[0018] The third through hole is arranged on the annular shell.

[0019] The second fixed fitting hole is arranged on the third sealing ring.

[0020] The second sealing ring, the protection part, the annular shell and the third sealing ring are sequentially arranged, the second sealing ring is provided with a plurality of second fixed columns, each of the second fixed columns passes through the second through hole, the third through hole and is connected to the second fixed fitting hole on the third sealing ring in sequence.

[0021] Optionally, the second fixed column extends out of the second fixed fitting hole, and one end of the second fixed column extending out of the second fixed fitting hole is hot melt connected with the third sealing ring.

[0022] Optionally, the protection part comprises a plurality of single parts, each of the single parts has a fixed edge and a protection sheet.

[0023] The second through hole is arranged on the fixed edge.

[0024] Each of the protection sheets is located on the wide mouth of the conical body.

[0025] Each of the protection sheets cooperatively blocks the wide mouth of the conical body.

[0026] Optionally, a plurality of inner protrusions are arranged on the inner wall of the annular shell, each of the inner protrusions is provided with the third through hole, and a gap is formed between adjacent inner protrusions;

[0027] A plurality of limiting bodies are arranged on the third sealing ring, and each of the limiting bodies is embedded on the corresponding gap.

[0028] In a second aspect, the embodiment of the present application provides a processing method of the laparoscope puncture device sealing assembly, comprising:

[0029] Step S1, assembling the sealing fitting part, the first sealing ring and the second sealing ring to form a first assembly, and supporting on the upper surface of the supporting tool, so that the first fixed column protrudes from one end of the first fixed fitting hole towards the movable tool;

[0030] Step S2, controlling the movable tool to move towards the supporting tool, extruding and heating the first fixed column, so that the first fixed column and the first sealing ring are heat fusion connected.

[0031] Optionally, the processing method further comprises:

[0032] Step S3, assembling the protection part, the annular shell and the third sealing ring to the first assembly to form a second assembly, the second sealing ring, the protection part, the annular shell and the third sealing ring are arranged in sequence, and the second fixed column on the second sealing ring passes through the protection part, the annular shell and the third sealing ring in sequence;

[0033] Step S4, placing the second assembly on the upper surface of the supporting tool, so that the second fixed column extends towards the movable tool;

[0034] Step S5, controlling the movable tool to move towards the supporting tool, so that the movable tool extrudes and heats the second fixed column, so that the second fixed column and the third sealing ring are heat fusion connected.

[0035] By adopting the above technical solution, the present application has the following beneficial effects:

[0036] The peripheral side edge of the sealing fitting part of the laparoscope puncture device sealing assembly of the present application is effectively fixed by the first fixed column, solving the problem that the sealing fitting part of the prior art only relies on interference fit, and the vibration of the product during transportation and the thermal expansion and cold contraction of the weather easily cause the edge of the sealing fitting part to loosen and leak, affecting the operation process of the clinical patient, and even causing postoperative complications of the patient and other problems. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of the present application, illustrate the illustrative embodiments of the present application and the description thereof and do not constitute improper limitations to the present application. In the drawings:

[0038] Figure 1 A cross-sectional view showing the cooperation structure of the laparoscopic puncture device sealing assembly, puncture sleeve and puncture rod;

[0039] Figure 2 An exploded view showing the cooperation structure of the laparoscopic puncture device sealing assembly, puncture sleeve and puncture rod;

[0040] Figure 3 A schematic view showing the cooperation structure of the sealing fitting, first sealing ring and second sealing ring in the laparoscopic puncture device sealing assembly;

[0041] Figure 4 A schematic view showing the cooperation structure of the fixed tooling and movable tooling;

[0042] Figure 5 A schematic view showing Figure 4 A close-up view of the middle A part;

[0043] Figure 6 A schematic view showing the initial processing of the laparoscopic puncture device sealing assembly using the fixed tooling and movable tooling;

[0044] Figure 7 A schematic view showing the cooperation structure of the laparoscopic puncture device sealing assembly;

[0045] Figure 8 A schematic view showing the continued processing of the laparoscopic puncture device sealing assembly using the fixed tooling and movable tooling;

[0046] Figure 9 A first perspective view of the laparoscopic puncture device sealing assembly;

[0047] Figure 10 A second perspective view of the laparoscopic puncture device sealing assembly.

[0048] In the figure: 100, laparoscopic puncture device sealing assembly; 1, sealing fitting; 11, conical body; 111, sealing fitting hole; 112, reinforcing rib; 12, circular ring body; 121, first through hole; 2, first sealing ring; 21, first fixed fitting hole; 22, insertion shaft; 3, second sealing ring; 31, first fixed column; 32, second fixed column; 4, protection piece; 41, fixed edge; 411, second through hole; 42, protection sheet; 5, annular shell; 51, third through hole; 52, inner protrusion; 6, third sealing ring; 61, second fixed fitting hole; 62, limiting body; 7, outer shell; 200, puncture sleeve; 300, puncture rod; 400, fixed tooling; 410, groove; 420, avoidance hole; 500, movable tooling. DETAILED DESCRIPTION

[0049] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, if necessary.

[0050] In the description of the present application and the embodiments thereof, it should be understood that the orientation or position relationship indicated by the terms "top", "bottom", "height" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0051] In the present application and the embodiments thereof, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected, or can be communicated; can be directly connected, or indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application and the embodiments thereof, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] As Figures 1 to 10As shown, the embodiment of the present application provides a laparoscopic puncture device sealing assembly 100, which comprises a sealing fitting part 1, a first sealing ring 2 and a second sealing ring 3. The sealing fitting part 1 is provided with a sealing fitting hole 111 and a plurality of first through holes 121, each of the first through holes 121 is located on the side of the sealing fitting hole 111, and each of the first through holes 121 is sequentially and spacedly arranged along the edge of the sealing fitting part 1. At least one side of the sealing fitting part 1 close to the sealing fitting hole 111 is a flexible structure, and the side edge of the sealing fitting part 1 can be a hard structure, and the first through hole 121 can be provided. The first sealing ring 2 is provided with a first fixed fitting hole 21, and the second sealing ring 3 is provided with a plurality of first fixed columns 31. The first sealing ring 2 and the second sealing ring 3 are separately arranged on both sides of the sealing fitting part 1 in the thickness direction. In the connected state of the first sealing ring 2, the second sealing ring 3 and the sealing fitting part 1, each of the first fixed columns 31 is connected to the corresponding first fixed fitting hole 21 through the corresponding first through hole 121, and the first fixed column 31 and the first sealing ring 2 are fixedly connected. The first sealing ring 2 and the second sealing ring 3 can clamp and fix the sealing fitting part 1. The sealing fitting part 1 is substantially funnel-shaped and is installed at the top of the puncture sleeve 200. When the puncture rod 300 is inserted into the puncture channel of the sealing assembly 100 and the puncture sleeve 200, the puncture rod 300 will pass through the sealing fitting hole 111, and the structure of the sealing fitting part 1 located on the edge of the sealing fitting hole 111 will be tightly sleeved on the puncture rod 300 to close the puncture channel.

[0054] The side edge of the sealing fitting part 1 of the laparoscopic puncture device sealing assembly 100 of the present application is effectively fixed by the first fixed column 31. Even after multiple uses, the side edge of the sealing fitting part 1 will not be deformed and separated. The existing technology only relies on interference fit, and the product is prone to disengagement and air leakage due to vibration during transportation and thermal expansion and cold contraction of the weather, which affects the operation process of the clinical patient and even causes postoperative complications of the patient.

[0055] In some possible embodiments, as Figure 2 As shown, in the connected state of the first sealing ring 2, the second sealing ring 3 and the sealing fitting part 1, the first fixed column 31 protrudes out of the first fixed fitting hole 21, and one end of the first fixed column 31 protruding out of the first fixed fitting hole 21 is hot melt connected with the first sealing ring 2, so as to realize the fixed connection of the end of the first fixed column 31 and the first sealing ring 2. The first sealing ring 2 and the second sealing ring 3 cooperate to fix the sealing fitting part 1, and the three form an integrated structure.

[0056] In some possible embodiments, as Figure 2As shown, the first sealing ring 2 is provided with a plurality of insertion shafts 22, and in the connected state of the first sealing ring 2, the second sealing ring 3 and the sealing fitting part 1, each of the insertion shafts 22 is inserted into a corresponding first through hole 121.

[0057] The insertion shaft 22 is not used to penetrate the second sealing ring 3, and the insertion shaft 22 is only used to penetrate the first through hole 121 on the side of the sealing fitting part 1. The insertion shaft 22 on the first sealing ring 2 and the first fixed column 31 on the second sealing ring 3 are arranged in a staggered manner, and a first fixed fitting hole 21 is arranged between two adjacent insertion shafts 22 on the first sealing ring 2. The insertion shaft 22 and the first fixed column 31 are staggered with each other and do not interfere with each other. The second sealing ring 3 can be provided with a blind hole, and the end of the insertion shaft 22 can be inserted into the blind hole, thereby improving the structural strength of the insertion shaft 22 and enhancing the limiting effect on the sealing fitting part 1.

[0058] In some possible implementation schemes, as shown in the drawings, Figure 3 As shown, the sealing fitting part 1 has a conical body 11 and a circular ring body 12 arranged on the outer side edge of the conical body 11. The conical body 11 can be a flexible structure, the circular ring body 12 is provided with the first through hole 121, the center of the conical body 11 has the sealing fitting hole 111, and a plurality of reinforcing ribs 112 can be arranged on the conical body 11. Each of the reinforcing ribs 112 is arranged in sequence along the circumference of the sealing fitting hole 111. The arrangement of the reinforcing ribs 112 enhances the structural strength of the conical body 11, has a shaping effect, avoids the problem of serious deformation of the conical body 11, and prolongs the service life of the sealing fitting part 1. The circular ring body 12 is clamped and fixed between the first sealing ring 2 and the second sealing ring 3.

[0059] In some possible implementation schemes, as shown in the drawings, Figure 7 As shown, the laparoscope puncture device sealing assembly 100 includes a protection part 4, an annular shell 5 and a third sealing ring 6. The protection part 4 is provided with a second through hole 411, the annular shell 5 is provided with the third through hole 51, and the third sealing ring 6 is provided with a second fixed fitting hole 61. The second sealing ring 3, the protection part 4, the annular shell 5 and the third sealing ring 6 are arranged in sequence. The second sealing ring 3 is provided with a plurality of second fixed columns 32, and each of the second fixed columns 32 penetrates the second through hole 411, the third through hole 51 and is connected to the second fixed fitting hole 61 on the third sealing ring 6.

[0060] The sealing fitting part 1 is conical as a whole, and the inner side is provided with the sealing fitting hole 111, and the outer side forms a wide mouth. The protection part 4 is located on one side of the wide mouth end of the sealing fitting part 1, and shields the wide mouth to prevent impurities and dust from entering the puncture sleeve 200 through the wide mouth. When the puncture rod 300 penetrates the sealing assembly 100, the protection part 4 will deform under the action of external force to avoid the puncture rod 300, so that the puncture rod 300 can smoothly penetrate the protection part 4.

[0061] A second fixing post 32 is provided on the side of the second sealing ring 3 away from each of the first fixing posts 31. The second fixing post 32 passes through the second through hole 411 on the protective member 4 and the third through hole 51 on the annular shell 5 in sequence, and connects to the second fixing mating hole 61 on the third sealing ring 6. This allows the first sealing ring 2, sealing mating member 1, second sealing ring 3, protective member 4, annular shell 5 and third sealing ring 6 to be stacked in sequence and assembled and fixed into an integral structure, which facilitates unified assembly on the outer shell 7.

[0062] In some possible implementation schemes, combined Figure 7 and Figure 9 As shown, the second fixing post 32 extends out of the second fixing mating hole 61, and one end of the second fixing post 32 extending out of the second fixing mating hole 61 is heat-fused to the third sealing ring 6. This achieves the connection between the second sealing ring 3 and the third sealing ring 6, which together clamp and fix the protective component 4 and the annular shell 5.

[0063] In some possible implementations, the protective element 4 comprises multiple individual components, each having a fixed edge 41 and a protective plate 42. The fixed edge 41 has a second through hole 411, and each protective plate 42 is located on the wide opening of the conical body 11, sealing the wide opening of the conical body 11. The edges of each protective plate 42 are abutted along its thickness direction, and there is no connection between the different protective plates 42. When the piercing rod 300 is inserted, under external force, each protective plate 42 undergoes elastic deformation, allowing the piercing rod 300 to pass smoothly through each protective plate 42. The protective plate 42 is a flexible sheet, while the fixed edge 41 can be a rigid structure.

[0064] In some possible implementations, such as Figure 7 As shown, the inner wall of the annular shell 5 is provided with multiple inner protrusions 52, each of which is provided with the third through hole 51. A notch is formed between adjacent inner protrusions 52. The third sealing ring 6 is provided with multiple limiting bodies 62, each of which is embedded in a corresponding notch. This ensures that the third sealing ring 6 and the annular shell 5 are in a limiting fit, preventing relative rotation between them.

[0065] In some possible implementation manners, the laparoscopic puncture device sealing assembly 100 further comprises a housing 7, the sealing fitting piece 1, the first sealing ring 2, and the second sealing ring 3 are arranged in the housing 7, the housing 7 is provided with a plug-in groove, the housing 7 is provided with a clamping fitting part, and the sealing fitting hole 111 is located in the plug-in groove. When the puncture rod 300 penetrates through the plug-in groove, the puncture rod 300 naturally penetrates through the sealing fitting hole 111, so as to be sealed by the sealing fitting piece 1, and the puncture rod 300 can be further inserted into the puncture sleeve 200 when the puncture rod 300 penetrates through the plug-in groove. The clamping fitting part on the housing 7 can comprise a clamping jaw, and the puncture sleeve 200 can be provided with a clamping groove, the clamping jaw is detachably clamped in the clamping groove, and assembly of the sealing assembly 100 and the puncture sleeve 200 is realized.

[0066] The embodiment of the present application also provides a processing method of the laparoscopic puncture device sealing assembly 100.

[0067] As shown in Figure 3 and Figure 6 , the sealing fitting piece 1, the first sealing ring 2, and the second sealing ring 3 are assembled to form a first assembly body, and are supported on an upper surface of a supporting tool, so that one end of the first fixed column 31 protruding from the first fixed fitting hole 21 faces the movable tool 500.

[0068] In step S2, the movable tool 500 is controlled to move towards the supporting tool, the first fixed column 31 is extruded and heated, and the first fixed column 31 is heat-fused with the first sealing ring 2.

[0069] The movable tool 500 is located on the top of the fixed tool 400, the movable tool 500 is provided with a heating assembly, the end of the first fixed column 31 can be heated, the end of the first fixed column 31 is heat-fused with the first sealing ring 2, and the first sealing ring 2 is away from the second sealing ring 3.

[0070] As shown in Figure 4 and Figure 5 , a plurality of grooves 410 can be arranged on the supporting tool, and the plurality of grooves 410 can conveniently accommodate a plurality of partial structural members (the first assembly body) of the sealing assembly 100. For example, a plurality of avoiding holes 420 can be arranged on the bottom wall of the groove 410, when the second sealing ring 3 is arranged in the groove 410, each second fixed column 32 on the second sealing ring 3 is inserted into the corresponding avoiding hole 420, so as to protect the second fixed column 32, and limit the first assembly body.

[0071] The processing method can further comprise:

[0072] In step S3, as shown in Figure 7As shown, the protector 4, the annular shell 5 and the third sealing ring 6 are assembled to the first assembly to form a second assembly, the second sealing ring 3, the protector 4, the annular shell 5 and the third sealing ring 6 are arranged in sequence, and the second fixing column 32 on the second sealing ring 3 passes through the protector 4, the annular shell 5 and the third sealing ring 6 in sequence;

[0073] Step S4, as shown in Figure 8 As shown, the second assembly is placed on the upper surface of the support tool, so that the second fixing column 32 extends towards the movable tool 500;

[0074] Compared with step S1, in step S4, the sealing assembly 180 is turned over and placed on the upper surface of the support tool, at this time, the end of the first fixing column 31 can be accommodated in the corresponding avoiding hole 420, and the cantilever end of the second fixing column 32 faces the movable tool 500. The movable tool 500 is connected with a pressing cylinder, and the pressing cylinder can drive the movable tool 500 to move up and down.

[0075] Step S5, the movable tool 500 is controlled to move towards the support tool, so that the movable tool 500 extrudes and heats the second fixing column 32, so that the second fixing column 32 and the third sealing ring 6 are heat-fused.

[0076] The movable tool 500 is located on the top of the fixed tool 400, and the movable tool 500 is provided with a heating assembly, which can heat the end of the second fixing column 32, so that the end of the second fixing column is heat-fused and fixed with the side of the third sealing ring 6 away from the second sealing ring 3, thereby completing the assembly of at least part of the structure of the laparoscopic puncture device sealing assembly 100.

[0077] The above disclosure provides many different embodiments or examples for implementing the different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described in the above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0078] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0079] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A laparoscopic trocar seal assembly comprising: The application relates to a sealing assembly, which comprises the following components: a sealing fitting, which is provided with a sealing fitting hole and a plurality of first through holes, each of the first through holes is located on the periphery of the sealing fitting hole, and each of the first through holes is sequentially and spacedly arranged along the edge of the sealing fitting; a first sealing ring and a second sealing ring, the first sealing ring is provided with a first fixed fitting hole and a plurality of shafts, the second sealing ring is provided with a plurality of first fixed columns and second fixed columns, the first fixed columns are located on one side of the second sealing ring, the second fixed columns are arranged on the side of the second sealing ring which is away from the first fixed columns, and the first sealing ring and the second sealing ring are separately arranged on the two sides of the sealing fitting in the thickness direction; a protection piece, which is provided with a second through hole; a ring-shaped shell, which is provided with a third through hole; and a third sealing ring, which is provided with a second fixed fitting hole; each of the first fixed columns is connected to the corresponding first fixed fitting hole through the corresponding first through hole, the first fixed columns and the first sealing ring are fixedly connected, the first fixed columns protrude out of the first fixed fitting hole, one end of the first fixed columns which protrudes out of the first fixed fitting hole is hot melt connected with the first sealing ring, each of the shafts is inserted into the corresponding first through hole, the shafts do not penetrate through the second sealing ring, the shafts on the first sealing ring and the first fixed columns on the second sealing ring are arranged in a staggered mode, and a first fixed fitting hole is arranged between adjacent two shafts on the first sealing ring; the second sealing ring, the protection piece, the ring-shaped shell and the third sealing ring are sequentially arranged, each of the second fixed columns sequentially penetrates through the second through hole, the third through hole and is connected to the second fixed fitting hole on the third sealing ring, the second fixed columns protrude out of the second fixed fitting hole, and one end of the second fixed columns which protrudes out of the second fixed fitting hole is hot melt connected with the third sealing ring. The sealing fitting has a conical body and a circular ring body arranged on the outer edge of the conical body; The circular ring body is provided with the first through holes; The conical body is provided with the sealing fitting hole; The circular ring body is clamped and fixed between the first sealing ring and the second sealing ring. The protection piece comprises a plurality of single pieces, each of the single pieces has a fixed edge and a protection sheet; The fixed edge is provided with the second through hole; Each of the protection sheets is located on the wide mouth of the conical body; 2. The laparoscopic piercer seal assembly of claim 1, wherein, Each of the protection sheets cooperatively blocks the wide mouth of the conical body. The inner wall of the ring-shaped shell is provided with a plurality of inner convex parts, each of the inner convex parts is provided with the third through hole, and a gap part is formed between adjacent inner convex parts; The third sealing ring is provided with a plurality of limiting bodies, and each of the limiting bodies is embedded in the corresponding gap part. The application further relates to a sealing assembly assembly method, which comprises the following steps: S1, assembling the sealing fitting, the first sealing ring and the second sealing ring to form a first assembly body, and supporting the first assembly body on the upper surface of a supporting tool, so that one end of the first fixed column which protrudes out of the first fixed fitting hole faces the movable tool; S2, controlling the movable tool to move towards the supporting tool, extruding and heating the first fixed column, so that the first fixed column and the first sealing ring are hot melt connected; and S3, sequentially arranging the protection piece, the ring-shaped shell and the third sealing ring, and sequentially penetrating the second fixed column through the second through hole, the third through hole and the second fixed fitting hole on the third sealing ring, so that the second fixed column and the third sealing ring are hot melt connected.

3. The laparoscopic piercer seal assembly of claim 2, wherein, ​ ​ ​ ​ 4. The laparoscopic piercer seal assembly of claim 1, wherein, ​ ​ 5. A method for manufacturing the sealing assembly of the laparoscopic trocar as described in any one of claims 1-4, characterized in that, ​ ​ ​ 6. The method of claim 5, wherein, ​ Step S3, assembling the protector, the annular shell and the third sealing ring to the first assembly to form a second assembly, the second sealing ring, the protector, the annular shell and the third sealing ring are arranged in sequence, the second fixing column on the second sealing ring passes through the protector, the annular shell and the third sealing ring in sequence; Step S4, placing the second assembly on the upper surface of the supporting tool, so that the second fixing column extends towards the movable tool; Step S5, controlling the movable tool to move towards the supporting tool, so that the movable tool extrudes and heats the second fixing column, so that the second fixing column and the third sealing ring are heat fusion connected.

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