An easy-to-assemble rotating single-hole puncture device

Abstract

The present invention provides an easy-to-assemble rotary single-hole trocar that solves the problem of the incision protective cover easily loosening. The trocar comprises a multi-channel sealing cover and an incision protective cover, a channel sealing cap disposed between the multi-channel sealing cover and the incision protective cover, a locking ring assembly disposed within the channel sealing cap, the end of the incision protective cover being inserted into the inner side of the channel sealing cap, and the channel sealing cap and locking ring assembly being equipped with a clamping assembly opposing the incision protective cover. The present invention has the advantages of good sealing effect and preventing the incision protective cover from loosening.

Description

Technical Field

[0001] The invention belongs to the technical field of medical puncture instruments, and in particular relates to an easy-to-assemble rotary single-hole puncture instrument. Background Art

[0002] Laparoscopic surgery is typically performed intraoperatively through two to three small, 1-centimeter incisions. The primary purpose of a laparoscopic trocar is to penetrate the entire abdominal wall, establishing a channel between the outside world and the abdominal cavity. This allows surgical instruments to enter the abdominal cavity through the trocar cannula, completing the procedure and achieving the same goals as traditional open surgery. Disposable laparoscopic trocars consist of a trocar cannula and a core. The core's primary function, along with the trocar cannula, is to penetrate the entire abdominal wall and retain the trocar in place. The trocar cannula's primary function is to allow various surgical instruments to enter the abdominal cavity, allowing the surgeon to perform the procedure. However, in actual use, the protective cover of existing multi-channel trocars cannot be rotated relative to the incision cover, making it inconvenient to use. Furthermore, the incision cover is typically secured with a threaded connection, which cannot guarantee a tight seal and can easily become loose during use.

[0003] To address the shortcomings of existing technologies, researchers have conducted extensive research and proposed various solutions. For example, a Chinese patent document discloses a single-hole puncture device with a rotational mechanism [202122909928.X], which includes an incision protection sleeve and a flexible sealing cover. The flexible sealing cover has a channel at one end and a sealed cavity inside. The flexible sealing cover also includes a rotating connection assembly disposed between the incision protection sleeve and the flexible sealing cover. The rotating connection assembly is connected to the incision protection sleeve at one end and to the flexible sealing cover at the other end, and the two ends of the rotating connection assembly are axially fixed and circumferentially rotated.

[0004] The above solution solves the problem that the sealing cover cannot rotate relative to the incision protection sleeve to a certain extent, but the solution still has many shortcomings, such as the incision protection sleeve is prone to loosening and falling off. Summary of the Invention

[0005] The object of the present invention is to address the above-mentioned problems and to provide a rotary single-hole puncture device that is rationally designed, not prone to loosening, and easy to assemble.

[0006] To achieve the above objectives, the present invention employs the following technical solutions: an easily assembled rotary single-hole trocar, comprising a multi-channel sealing cover and an incision protection sleeve, a channel sealing cap disposed between the multi-channel sealing cover and the incision protection sleeve, a locking ring assembly disposed within the channel sealing cap, the end of the incision protection sleeve being inserted into the inner side of the channel sealing cap, and the channel sealing cap and locking ring assembly being equipped with a clamping assembly opposed to the incision protection sleeve. The locking ring assembly, in conjunction with the clamping assembly, applies additional compressive force to the incision protection sleeve, thereby providing a certain pre-tightening force to the clamping assembly without affecting the quick assembly of the incision protection sleeve and the multi-channel sealing cover, thereby preventing the incision protection sleeve from loosening.

[0007] The locking ring is provided with a locking groove which is arranged in the channel sealing cap and surrounds the channel sealing cap along the circumferential direction, and the channel sealing cap is provided with a locking opening which is opposite to the multi-channel sealing cover and opposite to the locking groove, and a locking ring which is clamped along the locking opening is installed in the locking groove, and the locking ring has a notch and a locking buckle assembly is provided between the head and tail connecting ends; the locking buckle assembly includes a buckle interface which is arranged on the outer side of the channel sealing cap and connected to the locking groove, the head and tail connecting ends of the locking ring are opposite to the buckle interface, one end of the locking ring is provided with a first protrusion and the first protrusion is rotatably connected to the locking handle, and the other end of the locking ring is provided with a second protrusion, the first protrusion is rotatably connected to the buckling ring, the second protrusion is provided with a buckling groove for the buckling ring to be clamped, and the locking ring is provided with a positioning protrusion near the first protrusion, and the locking handle is provided with a positioning opening. After the locking handle is rotated to fit with the locking ring, the positioning protrusion is inserted into the positioning opening. The locking ring in the locking ring assembly is tightened under the action of the locking assembly, making disassembly and assembly more convenient.

[0008] In the aforementioned easily assembled rotary single-hole puncture device, the clamping assembly includes a circumferentially encircling clamping ridge disposed on the inner side of a locking ring, a clamping groove formed within the locking groove for the clamping ridge to engage, and a clamping protrusion corresponding to the clamping groove formed on the inner side of the channel sealing cap. An inner ring body is provided at one end of the incision protection sleeve that is plugged into the channel sealing cap, and an inwardly extending limiting protrusion is provided at the upper end of the channel sealing cap. A clamping arc surface is provided between the limiting protrusion and the clamping protrusion to press against the inner ring body and the outer side of the incision protection sleeve. The clamping assembly contracts under the pressure of the locking ring assembly, and the contracted inner diameter is smaller than the diameter of the incision protection sleeve, thereby ensuring that the incision protection sleeve is securely clamped and prevented from falling off.

[0009] In the aforementioned easy-to-assemble rotary single-hole trocar, the inner ring at the end of the incision protection sleeve is made of TPU. An extrusion assembly is provided between the inner ring and the channel sealing cap, and an elastic reinforcement assembly is provided within the inner ring. The inner ring at the end of the incision protection sleeve has a certain degree of elasticity and hardness. While maintaining the frame structure, it can deform under pressure to ensure a good fit with the channel sealing cap.

[0010] In the aforementioned easily assembled rotary single-hole puncture device, the elastic reinforcement component includes a main cavity disposed within the inner ring body and surrounding the circumference. The main cavity is provided with circumferentially surrounding secondary cavities above and below. The main cavity and secondary cavities are relatively independent and are each fixed with a reinforcing ring made of elastic material. The reinforcing ring is a hollow structure with a plurality of reinforcing ribs extending circumferentially distributed on the inside. The extrusion component includes an extrusion sleeve disposed on the inside of the channel sealing cap. The extrusion sleeve has a fixing plate that is pressed and fixed between the inner ring body and the channel sealing cap, and an extrusion cylinder that is pressed and pressed against the inner side of the inner ring body. The extrusion cylinder has a corrugated extrusion surface on the side opposite to the inner ring body. Alternatively, a circumferentially surrounding and welded steel wire ring is disposed within the main cavity. The elastic reinforcement component maintains the frame structure of the inner ring body and has good radial and axial pressure resistance. The steel wire ring ensures convenient clinical flipping and, after cooperating with the locking ring assembly, squeezes the channel sealing cap to ensure airtightness.

[0011] In the aforementioned easily assembled rotary single-hole trocar, a sliding sleeve assembly is disposed between the multi-channel sealing cover and the incision protection sleeve, a limiting assembly is disposed within the channel sealing cap, opposing the sliding sleeve assembly, a pressurizing assembly is disposed between the sliding sleeve assembly, the multi-channel sealing cover, and the incision protection sleeve, and an anti-slip assembly is disposed between the sliding sleeve assembly, the multi-channel sealing cover, and the incision protection sleeve. The sliding sleeve assembly enables direct engagement between the multi-channel sealing cover and the incision protection sleeve, further isolating the channel sealing cap from the internal channel.

[0012] In the aforementioned easily assembled rotary single-hole trocar, the sliding sleeve assembly includes several telescopically connected auxiliary sleeves, with a self-locking assembly disposed between opposing surfaces of the auxiliary sleeves. The self-locking assembly includes a spiral self-locking groove disposed inside or outside the auxiliary sleeves, and another auxiliary sleeve having a self-locking block slidably connected to the self-locking groove. A plurality of self-locking notches are equidistantly arranged on one side of the self-locking groove, each having a self-locking thread extending circumferentially along the auxiliary sleeves, and the self-locking block has a self-locking screw blade that engages with the self-locking thread. A self-locking edge is disposed at the end of the auxiliary sleeve to mate with the other auxiliary sleeve. The sliding sleeve assembly is retractable to accommodate incision protective sleeves of different lengths, and the self-locking assembly is provided to adjust the sliding sleeve assembly to a specified length.

[0013] In the aforementioned easily assembled rotary single-hole trocar, the limiting assembly includes a limiting block disposed in a centrally symmetrical arrangement on the inner side of the upper end of the channel sealing cap. A limiting groove extending axially and correspondingly and slidably connected to the limiting block is defined on the outer side of one of the secondary sleeves. A limiting sleeve made of a porous elastic material is interposed between the secondary sleeve, the multi-channel sealing cover, and the incision protection sleeve. The limiting assembly restricts the circumferential position of the channel sealing cap and the sliding sleeve assembly.

[0014] In the aforementioned easily assembled rotary single-port trocar, the pressurizing assembly includes a pressurizing valve body disposed at the end of the secondary sleeve body. The pressurizing valve bodies are symmetrically arranged relative to the central axis of the secondary sleeve body. The ends of the pressurizing valve bodies are tightly fitted against the inner side of the multi-channel sealing cover or the incision protection cover. The gaps between adjacent pressurizing valve bodies are sealed by isolation valves. An isolation ring body is slidably mounted inside the multi-channel sealing cover and the incision protection cover. The gap between the isolation ring body and the pressurizing valve body is sealed by the isolation valve. After the sliding sleeve assembly is assembled between the multi-channel sealing cover and the incision protection cover, the pressurizing assembly automatically applies a compressive force to ensure a stable joint.

[0015] In the aforementioned easily assembled rotary single-hole puncture device, the anti-slip component includes an anti-slip layer covering the outside of an isolation ring body, an expansion component disposed between the anti-slip layer and the isolation ring body; the expansion component includes an expansion airbag disposed between the anti-slip layer and the isolation ring body, the expansion airbag including a main airbag disposed on the outside of the isolation ring body, the main airbag having a rectangular cross-section, and extruded strips concave from the outside to the inside disposed on both sides of a side of the main airbag close to the anti-slip layer, the extruded strips having an arc-shaped cross-section and openings facing outward. The anti-slip component utilizes a deformable anti-slip layer to increase the contact area with the inside of the multi-channel sealing cover or the incision protective cover, thereby improving the anti-slip effect of the sliding sleeve component and preventing axial movement thereof.

[0016] Compared with the existing technology, the advantages of the present invention are: the multi-channel sealing cover and the incision protection sleeve are connected through the channel sealing cap, and the locking ring assembly and the clamping assembly provide compression force to prevent the incision protection sleeve from slipping; the inner ring body at the end of the incision protection sleeve is locked and fixed under the action of the clamping assembly, and the junction has a better sealing effect; the sliding sleeve assembly separates the channel sealing cap from the internal channel, thereby improving its isolation and sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural cross-sectional view of the present invention;

[0019] Figure 3 is a schematic structural diagram of the lock ring assembly of the present invention;

[0020] Figure 4 is a schematic structural diagram of the extrusion assembly of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the sliding sleeve assembly of the present invention;

[0022] Figure 6 is a partial cross-sectional view of the present invention;

[0023] Figure 7 is another partial cross-sectional view of the present invention;

[0024] Figure 8 is a cross-sectional view of the structure of the elastic reinforcement component of the present invention;

[0025] Figure 9 is another structural sectional view of the present invention;

[0026] In the figure, the multi-channel sealing cover 1, the incision protection sleeve 2, the channel sealing cap 3, the locking ring assembly 4, the locking groove 41, the locking opening 42, the locking ring 43, the buckle interface 44, the locking handle 45, the first protrusion 46, the second protrusion 47, the buckling ring 48, the buckling groove 49, the positioning protrusion 491, the positioning opening 492, the clamping assembly 5, the clamping ridge 51, the clamping groove 52, the clamping protrusion 53, the inner ring body 54, the limiting protrusion 55, the clamping arc surface 56, the extrusion assembly 6, the extrusion sleeve 61, the extrusion Pressing cylinder 62, extrusion surface 63, fixing plate 64, elastic reinforcement component 7, main cavity 71, auxiliary cavity 72, reinforcement ring 73, reinforcement rib 74, sliding sleeve component 8, auxiliary sleeve body 81, self-locking groove 82, self-locking block 83, self-locking notch 84, self-locking thread 85, self-locking screw sheet 86, limit block 87, limit groove 88, limit sleeve 89, pressurizing component 9, pressurizing valve body 91, isolation valve 92, isolation ring body 93, anti-slip layer 94, expansion airbag 95, main airbag 96, extrusion strip 97. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 as well as Figure 9 As shown, a rotary single-hole puncture device that is easy to assemble includes a multi-channel sealing cover 1 and an incision protection cover 2 made of plastic. The upper end of the multi-channel sealing cover 1 is provided with several operating channels and the operating channels are closed by a valve plate. The incision protection cover 2 extends into the surgical cavity. A channel sealing cap 3 is provided between the multi-channel sealing cover 1 and the incision protection cover 2 for transfer. At the same time, a spiral structure is also provided between the channel sealing cap 3 and the multi-channel sealing cover 1 for connection and installation. A locking ring assembly 4 is provided inside the channel sealing cap 3. The locking ring assembly 4 is different from the conventional threaded connection method. Its assembly and locking method is relatively quick and can apply a locking force with a fixed torque. The end of the incision protection cover 2 is inserted into the inner side of the channel sealing cap 3 and is in the same radial orientation as the locking ring assembly 4. The channel sealing cap 3 and the locking ring assembly 4 are equipped with a clamping assembly 5 opposite to the incision protection cover 2. The locking ring assembly 4 provides a locking force for the clamping assembly 5, and the clamping assembly 5 forms a locking structure relative to the incision protection cover 2.

[0029] like Figure 3As shown, the locking ring assembly 4 is combined with the channel sealing cap 3. The channel sealing cap 3 provides isolation and protection for the locking ring assembly 4 and serves as the base of the clamping assembly 5. The locking ring assembly 4 also includes a circumferentially encircling locking groove 41 disposed within the channel sealing cap 3. The channel sealing cap 3 is provided with a locking opening 42 that is opposite to the multi-channel sealing cover 1 and opposite to the locking groove 41. A guiding slope is provided at the end of the locking opening 42. A locking ring 43 is installed in the locking groove 41 and is inserted along the locking opening 42. The locking ring 43 is nested in the locking groove 41 under the guidance of the guiding slope. The locking ring 43 is made of a hard material and has a harder hardness than the channel sealing cap 3. When the channel sealing cap 3 is subjected to pressure, it will produce a certain deformation.

[0030] The locking ring 43 has a notch and a locking assembly disposed between its end connections. This assembly connects the locking ring 43 end to end into a ring-shaped structure, with an inner diameter smaller than that of the locking groove 41. The locking assembly includes a snap interface 44 disposed outside the channel sealing cap 3 and communicating with the locking groove 41. The operator controls the opening and closing of the notch in the locking ring 43 through the snap interface 44, with the end connections of the locking ring 43 facing the snap interface 44. A first protrusion 46 is disposed at one end of the locking ring 43, which is rotatably connected to a locking handle 45. A second protrusion 47 is disposed at the other end of the locking ring 43, with the first and second protrusions 46, 47 arranged in pairs. The first protrusion 46 is rotatably connected to a fastening ring 48. The second protrusion 47 has a fastening groove 49 for the fastening ring 48 to engage. The locking ring 43 has a positioning protrusion 491 near the first protrusion 46. The locking handle 45 has a positioning opening 492. After the locking handle 45 is rotated to engage the locking ring 43, the positioning protrusion 491 is inserted into the positioning opening 492. In addition to using the fastening ring 48 to achieve the transition, a screw can also be used to adjust the tightening amount steplessly.

[0031] Further, the clamping assembly 5 and the locking ring assembly 4 combine to provide compression for the incision protection sleeve 2. The clamping assembly 5 includes a circumferentially encircling clamping rib 51 disposed inside the locking ring 43. The clamping rib 51 is integrally formed with the locking ring 43 and is located at the end of the locking ring 43, facing the incision protection sleeve 2. A clamping groove 52 is defined within the locking groove 41 for the clamping rib 51 to engage. When the locking ring 43 is inserted into the locking groove 41, the clamping rib 51 engages with the clamping groove 52. The inner side of the channel sealing cap 3 is provided with a clamping protrusion 53 corresponding to the clamping groove 52. The clamping protrusion 53 protrudes relative to the inner wall of the channel sealing cap 3, and its inner diameter is smaller than that of the channel sealing cap 3. An inner ring 54 is provided at the end where the incision protection sleeve 2 and the channel sealing cap 3 are inserted. The upper end of the channel sealing cap 3 has an inwardly extending limiter protrusion 55, which is used to limit the insertion depth of the incision protection sleeve 2. The inner ring 54 is positioned inside the end of the incision protection sleeve 2. Between the limiter protrusion 55 and the clamping protrusion 53 is a clamping arc 56 that presses against the inner ring 54 and the outer side of the incision protection sleeve 2. The clamping arc 56 maintains the seal at the junction of the incision protection sleeve 2 and the channel sealing cap 3. The inner ring 54 also includes a sealing ring made of other elastic materials to minimize the gap at the junction.

[0032] Furthermore, an extrusion assembly 6 is provided between the inner ring body 54 and the channel sealing cap 3 for further sealing, thereby improving the connection stability between the inner ring body 54 and the channel sealing cap 3. An elastic reinforcement assembly 7 is provided inside the inner ring body 54 to improve the structural strength and elastic recovery ability of the inner ring body 54, so that the inner ring body 54 can provide sufficient pressing force to the channel sealing cap 3.

[0033] from Figure 4 as well as Figure 7As can be seen, the elastic reinforcement assembly 7 includes a main cavity 71 disposed within the inner ring body 54 and circumferentially surrounding it. Circumferentially surrounding sub-cavities 72 are disposed above and below the main cavity 71. The cross-sections of the main cavity 71 and the sub-cavity 72 are both circular, with the diameter of the main cavity 71 being larger than that of the sub-cavity 72. The main cavity 71 and the sub-cavity 72 are relatively independent, and each is fixed with a reinforcing ring 73 made of elastic material. The reinforcing ring 73 is a hollow structure with a number of circumferentially extending reinforcing ribs 74 distributed inside. The reinforcing ring 73 is in contact with the inner walls of the main cavity 71 and the sub-cavity 72, and the centers of each reinforcing ring 73 are on the same axis. The extrusion assembly 6 includes an extrusion sleeve 61 arranged on the inner side of the channel sealing cap 3, and an installation space for the inner ring body 54 is reserved between the extrusion sleeve 61 and the channel sealing cap 3. The extrusion sleeve 61 has a fixing plate 64 fixed between the inner ring body 54 and the channel sealing cap 3, and an extrusion cylinder 62 pressed against the inner side of the inner ring body 54. The fixing plate 64 and the extrusion cylinder 62 are integrally formed, and a step surface opposite to the inner ring body 54 is reserved between them. A corrugated extrusion surface 63 is distributed on the side of the extrusion cylinder 62 opposite to the inner ring body 54. The extrusion surface 63 is distributed on the step surface. The wave-structured extrusion surface 63 increases the contact area with the inner ring body 54 after being compressed and deformed, and automatically bites the inner ring body 54. Or as Figure 8 As shown, a circumferentially surrounded and welded steel wire ring 75 is provided in the main cavity 71 , and after cooperating with the locking ring assembly 4 , it squeezes the channel sealing cap 3 to ensure air tightness.

[0034] In addition to the conventional sealing structure, a plurality of sealing members are provided between the multi-channel sealing cover 1 and the incision protection cover 2. Figure 2 The illustrated sliding sleeve assembly 8 further enhances the sealing effect at the joint. A position-limiting assembly is provided within the channel sealing cap 3, opposing the sliding sleeve assembly 8. The combination of the sliding sleeve assembly 8 and the position-limiting assembly limits the circumferential position of the sliding sleeve assembly 8 and the channel sealing cap 3, preventing circumferential rotational misalignment of the sliding sleeve assembly 8. A pressurizing assembly 9 is provided between the sliding sleeve assembly 8, the multi-channel sealing cover 1, and the incision protection cover 2. An anti-slip assembly is provided between the sliding sleeve assembly 8, the multi-channel sealing cover 1, and the incision protection cover 2. The combination of the pressurizing assembly 9 and the anti-slip assembly enhances the sealing effect at the port of the sliding sleeve assembly 8 and stabilizes the installation position.

[0035] like Figure 5 as well as Figure 6As shown, the sliding sleeve assembly 8 includes several telescopically connected auxiliary sleeve bodies 81, at least three auxiliary sleeve bodies 81 realize the clutch adjustment of the length of the sliding sleeve assembly 8, and at least one of the auxiliary sleeve bodies 81 is fixed to the channel sealing cap 3, and a self-locking assembly is provided between the opposite surfaces of the auxiliary sleeve bodies 81 to adjust the position of the adjacent auxiliary sleeve bodies 81; the self-locking assembly includes a self-locking groove 82 provided on the inner or outer side of the auxiliary sleeve body 81, and the self-locking groove 82 is spiral. The other auxiliary sleeve body 81 has a self-locking block 83 slidably connected to the self-locking groove 82, and rotating the auxiliary sleeve body 81 can drive the self-locking block 83 to slide in the self-locking groove 82 to adjust the axial position of the adjacent auxiliary sleeve bodies 81. On one side of the self-locking groove 82, there are several self-locking notches 84 equidistantly arranged for the self-locking block 83 to be snapped into. The self-locking notches 84 have self-locking threads 85 extending along the circumferential direction of the auxiliary sleeve 81. The self-locking block 83 has a self-locking screw sheet 86 that is snapped into the self-locking threads 85. The self-locking notches 84 and the self-locking threads 85 are equidistantly arranged in the axial direction; a self-locking edge that fits with the other auxiliary sleeve 81 is provided at the end of the auxiliary sleeve 81, which on the one hand improves the sealing performance of the junction of the auxiliary sleeve 81; on the other hand, a high degree of rotational clearance is retained for the auxiliary sleeve 81.

[0036] It can be seen that the limiting assembly includes a limiting block 87 which is arranged on the inner side of the upper end of the channel sealing cap 3 and is arranged in a centrally symmetrical manner. The limiting block 87 is integrally formed with the channel sealing cap 3. A limiting groove 88 is opened on the outer side of one of the auxiliary sleeves 81, which is slidably connected to the limiting block 87 in a one-to-one manner, and the limiting groove 88 extends axially. The limiting block 87 and the limiting groove 88 are respectively arranged in a centrally symmetrical manner. A limiting sleeve 89 made of porous elastic material is filled between the auxiliary sleeve 81 and the multi-channel sealing cover 1 and the incision protection cover 2 to support the sliding sleeve assembly 8 and reduce the shaking of the sliding sleeve assembly 8 relative to the multi-channel sealing cover 1 and the incision protection cover 2.

[0037] from Figure 6 It can be seen that the pressurizing assembly 9 includes a pressurizing flap body 91 provided at the end of the auxiliary sleeve 81. The pressurizing flap bodies 91 are separated from each other, and the pressurizing flap bodies 91 are symmetrically arranged relative to the central axis of the auxiliary sleeve 81. Under the action of elasticity, the end of the pressurizing flap body 91 is pressed tightly against the inner side of the multi-channel sealing cover 1 or the incision protection cover 2. The gap between adjacent pressurizing flap bodies 91 is closed by an isolation valve 92. When the pressurizing flap bodies 91 are in a separated state, the isolation valve 92 is also in a tightened state. An isolation ring body 93 is slidably installed on the inner side of the multi-channel sealing cover 1 and the incision protection cover 2. The gap between the isolation ring body 93 and the pressurizing flap body 91 is closed by the isolation valve 92. The port of the isolation valve 92 is then in the shape of a multi-faceted funnel. External instruments can be inserted into and through each auxiliary sleeve 81 through the multi-channel sealing cover 1.

[0038] Preferably, the anti-slip assembly includes an anti-slip layer 94 wrapped around the outside of the isolation ring body 93. The anti-slip layer 94 increases the surface friction coefficient of the anti-slip layer 94. When the pressurized valve body 91 is fully expanded, the anti-slip layer 94 is locked. An expansion assembly is provided between the anti-slip layer 94 and the isolation ring body 93 to provide the isolation ring body 93 with an additional protective area; the expansion assembly includes an expansion airbag 95 provided between the anti-slip layer 94 and the isolation ring body 93. The expansion airbag 95 includes a main airbag 96 provided on the outside of the isolation ring body 93. When the expansion airbag 95 is pressurized, the main airbag 96 only undergoes slight deformation and still maintains a rectangular structure. On both sides of the side of the main airbag 96 close to the anti-slip layer 94, there are extruded strips 97 that are concave from the outside to the inside. The cross-section of the extruded strip 97 is arc-shaped and the opening faces outward. As the main airbag 96 is pressurized, the internal extruded strip 97 bulges out and fits against the multi-channel sealing cover 1 or the incision protection sleeve 2.

[0039] Example 1

[0040] like Figure 9 As shown, the sliding sleeve assembly 8 is arranged between the multi-channel sealing cover 1 and the incision protection cover 2, and one of the auxiliary sleeve bodies 81 of the sliding sleeve assembly 8 is fixed with the channel sealing cap 3. During installation, the auxiliary sleeve body 81 at the lower end is first plugged and fixed with the incision protection cover 2, and then the auxiliary sleeve body 81 in the middle is connected with the channel sealing cap 3, and finally the auxiliary sleeve body 81 at the upper end is directly inserted into the auxiliary sleeve body 81, wherein the pressurized petal body 91 automatically expands after insertion to achieve compression and fixation.

[0041] Example 2

[0042] The structure, principle and specific implementation steps of this embodiment are similar to those of Example 1. The difference is that in this embodiment, the auxiliary sleeve 81 at the upper end or the lower end is pre-placed in the multi-channel sealing cover 1 or the incision protection cover 2, and then the middle auxiliary sleeve 81 is pre-plugged and fixed with the auxiliary sleeve 81, and then the various auxiliary sleeves 81 are assembled and adjusted to the appropriate relative position by threaded rotation. During the threaded assembly process, the multi-channel sealing cover 1, the incision protection cover 2 and the channel sealing cap 3 are combined.

[0043] To sum up, the principle of this embodiment is that the multi-channel sealing cover 1 and the incision protection sleeve 2 are connected through the channel sealing cap 3, and the locking ring assembly 4 and the clamping assembly 5 therebetween apply a tightening torque to the incision protection sleeve 2 to achieve locking and fixing of the incision protection sleeve 2. At the same time, the channel between the incision protection sleeve 2 and the inner side of the multi-channel sealing cover 1 is further separated by the sliding sleeve assembly 8 to ensure the internal sealing effect.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0045] Although this article uses more multi-channel sealing cover 1, incision protection sleeve 2, channel sealing cap 3, locking ring assembly 4, locking groove 41, locking opening 42, locking ring 43, buckle interface 44, locking handle 45, first protrusion 46, second protrusion 47, buckling ring 48, buckling groove 49, positioning protrusion 491, positioning opening 492, clamping assembly 5, clamping ridge 51, clamping groove 52, clamping protrusion 53, inner ring body 54, limiting protrusion 55, clamping arc surface 56, extrusion assembly 6, extrusion sleeve 61, extrusion cylinder 62, extrusion The terms such as the pressure surface 63, the fixing plate 64, the elastic reinforcement component 7, the main cavity 71, the auxiliary cavity 72, the reinforcement ring 73, the reinforcement rib 74, the sliding sleeve component 8, the auxiliary sleeve body 81, the self-locking groove 82, the self-locking block 83, the self-locking notch 84, the self-locking thread 85, the self-locking screw piece 86, the limiting block 87, the limiting groove 88, the limiting sleeve 89, the pressurizing component 9, the pressurizing valve body 91, the isolation valve 92, the isolation ring body 93, the anti-slip layer 94, the expansion airbag 95, the main airbag 96, and the extruded strip 97 are used, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. An easily assembled rotary single-hole trocar, comprising a multi-channel sealing cover (1) and an incision protection cover (2), characterized in that: A channel sealing cap (3) is provided between the multi-channel sealing cover (1) and the incision protection sleeve (2), a locking ring assembly (4) is provided inside the channel sealing cap (3), the end of the incision protection sleeve (2) is plugged into the inner side of the channel sealing cap (3), and the channel sealing cap (3) and the locking ring assembly (4) are equipped with a clamping assembly (5) opposite to the incision protection sleeve (2); the locking ring assembly (4) includes a locking groove (41) provided in the channel sealing cap (3) and surrounding the circumference, and a locking groove (41) is provided on the channel sealing cap (3) opposite to the multi-channel sealing cover (1) and opposite to the locking groove (41). The locking opening (42) is opposite to the locking opening (42), and a locking ring (43) is installed in the locking groove (41) and is inserted along the locking opening (42). The locking ring (43) has a notch and a locking assembly is provided between the head and tail connecting ends; the locking assembly includes a buckle interface (44) provided on the outside of the channel sealing cap (3) and connected to the locking groove (41), the head and tail connecting ends of the locking ring (43) are opposite to the buckle interface (44), one end of the locking ring (43) is provided with a first protrusion (46) and the first protrusion (46) is rotatably connected to the locking handle (45), and the other end of the locking ring (43) is provided with a first protrusion (46). A second protrusion (47) is provided, the first protrusion (46) is rotatably connected to a fastening ring (48), the second protrusion (47) is provided with a fastening groove (49) for the fastening ring (48) to be clamped, the locking ring (43) is provided with a positioning protrusion (491) near the first protrusion (46), the locking handle (45) is provided with a positioning opening (492), and the locking handle (45) is rotated to fit with the locking ring (43) and the positioning protrusion (491) is inserted into the positioning opening (492); the clamping assembly (5) includes a circumferentially arranged inner side of the locking ring (43) A clamping rib (51), a clamping groove (52) for the clamping rib (51) to be embedded in the locking groove (41), and a clamping protrusion (53) corresponding to the clamping groove (52) is provided on the inner side of the channel sealing cap (3); an inner ring body (54) is provided at one end of the incision protection sleeve (2) and the channel sealing cap (3) for plugging, and a limiting protrusion (55) extending inward is provided at the upper end of the channel sealing cap (3), and a clamping arc surface (56) is provided between the limiting protrusion (55) and the clamping protrusion (53) for pressing against the inner ring body (54) and the outer side of the incision protection sleeve (2).

2. The easily assembled rotary single-hole puncture device according to claim 1, characterized in that: The inner ring body (54) at the end of the incision protection sleeve (2) is made of TPU material, an extrusion component (6) is provided between the inner ring body (54) and the channel sealing cap (3), and an elastic reinforcement component (7) is provided inside the inner ring body (54).

3. The easily assembled rotary single-hole puncture device according to claim 2, characterized in that: The elastic reinforcement component (7) includes a main cavity (71) arranged inside the inner ring body (54) and surrounding in the circumferential direction, and the main cavity (71) is provided with a sub-cavity (72) surrounding in the circumferential direction above and below, respectively. The main cavity (71) and the sub-cavity (72) are relatively independent and have a reinforcement ring (73) made of elastic material fixed inside, respectively. The reinforcement ring (73) is a hollow structure and has a plurality of reinforcement ribs (74) extending in the circumferential direction distributed inside. The extrusion component (6) includes An extrusion sleeve (61) is provided on the inner side of the channel sealing cap (3), the extrusion sleeve (61) comprising a fixing plate (64) fixed between the inner ring body (54) and the channel sealing cap (3), and an extrusion cylinder (62) pressed against the inner side of the inner ring body (54), a corrugated extrusion surface (63) being provided on the side of the extrusion cylinder (62) opposite to the inner ring body (54); or a steel wire ring (75) which is circumferentially surrounded and welded is provided in the main cavity (71).

4. The easily assembled rotary single-hole puncture device according to claim 1, characterized in that: A sliding sleeve assembly (8) is provided between the multi-channel sealing cover (1) and the incision protection cover (2); a limiting assembly opposite to the sliding sleeve assembly (8) is provided inside the channel sealing cap (3); a pressurizing assembly (9) is provided between the sliding sleeve assembly (8), the multi-channel sealing cover (1) and the incision protection cover (2); and an anti-slip assembly is provided between the sliding sleeve assembly (8), the multi-channel sealing cover (1) and the incision protection cover (2).

5. The easily assembled rotary single-hole trocar according to claim 4, characterized in that: The sliding sleeve assembly (8) includes a plurality of telescopically connected auxiliary sleeve bodies (81), and a self-locking assembly is provided between opposite surfaces of the auxiliary sleeve bodies (81); the self-locking assembly includes a self-locking groove (82) provided on the inner side or the outer side of the auxiliary sleeve body (81), the self-locking groove (82) is spiral, and the other auxiliary sleeve body (81) has a self-locking block (83) slidably connected to the self-locking groove (82), a plurality of self-locking notches (84) are equidistantly arranged on one side of the self-locking groove (82), the self-locking notches (84) have a self-locking thread (85) extending along the circumferential direction of the auxiliary sleeve body (81), and the self-locking block (83) has a self-locking screw sheet (86) engaged with the self-locking thread (85); and a self-locking edge is provided at the end of the auxiliary sleeve body (81) and is in contact with the other auxiliary sleeve body (81).

6. The easily assembled rotary single-hole trocar according to claim 5, characterized in that: The limiting assembly includes a limiting block (87) arranged on the inner side of the upper end of the channel sealing cap (3) and arranged in a centrally symmetrical manner, a limiting groove (88) is opened on the outer side of one of the auxiliary sleeves (81) and is slidably connected to the limiting block (87) in a one-to-one correspondence, and the limiting groove (88) extends axially, and a limiting sleeve (89) made of porous elastic material is filled between the auxiliary sleeve (81) and the multi-channel sealing cover (1) and the incision protection sleeve (2).

7. The easily assembled rotary single-hole trocar according to claim 4, characterized in that: The pressurizing assembly (9) includes a pressurizing flap (91) arranged at the end of the auxiliary sleeve (81), the pressurizing flap (91) is symmetrically arranged relative to the central axis of the auxiliary sleeve (81), the end of the pressurizing flap (91) is pressed against the inner side of the multi-channel sealing cover (1) or the incision protection cover (2), the gap between adjacent pressurizing flaps (91) is closed by an isolation flap (92), and an isolation ring (93) is slidably installed on the inner side of the multi-channel sealing cover (1) and the incision protection cover (2), and the gap between the isolation ring (93) and the pressurizing flap (91) is closed by the isolation flap (92).

8. The easily assembled rotary single-hole trocar according to claim 7, characterized in that: The anti-skid component includes an anti-skid layer (94) wrapped around the outside of the isolation ring body (93), and an expansion component is provided between the anti-skid layer (94) and the isolation ring body (93); the expansion component includes an expansion airbag (95) provided between the anti-skid layer (94) and the isolation ring body (93), and the expansion airbag (95) includes a main airbag (96) provided on the outside of the isolation ring body (93), and the main airbag (96) has a rectangular cross-section, and extruded strips (97) concave from the outside to the inside are provided on both sides of a side of the main airbag (96) close to the anti-skid layer (94), and the extruded strips (97) have an arc cross-section and an opening facing outward.

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