Sealing device for single-incision laparoscopic surgery

Abstract

A sealing device for single-incision laparoscopic surgery includes an upper sealing cover, a lower sleeve, and a sealing connector for sealingly connecting the upper sealing cover and the lower sleeve. The upper sealing cover is an integrally formed flexible member. The top of the upper sealing cover is formed with an operating hole for forming an instrument channel. There are at least two operating holes. The operating holes are provided with an incision for surgical instruments to pass through and can be self-sealed. The sealing device for laparoscopic surgery seals the upper sealing cover and the lower sleeve together through the sealing connector. The upper sealing cover is an integrally formed flexible member, which has a simple structure, is easy to manufacture, and has a low cost. When in use, the surgical instrument can pass through the operating hole at the top of the sealing cover body, and the incision at the bottom of the operating hole allows the surgical instrument to pass through while holding the outer wall of the instrument tightly to avoid air leakage at the incision. The sealing effect is good, and because the bare instrument is directly sealed through the upper sealing cover, it is conducive to the instruments being close to each other, and the flexibility of instrument operation is significantly improved.

Description

Technical Field

[0001] The invention relates to a device for laparoscopic surgery, in particular to a sealing device for single-incision laparoscopic surgery. Background Art

[0002] Single-port laparoscopic surgery refers to a minimally invasive surgery that uses a single minimally invasive incision on the body surface for laparoscopic operation. Since it only requires a single incision to enter the abdominal cavity and most of them use the natural folds of the human umbilicus, single-port laparoscopy causes less body surface trauma and is more beautiful than traditional multi-port laparoscopy. For this reason, people have invented various incision sealing devices for single-port laparoscopic surgery. For example, the "Single-port and Natural Cavity Laparoscopic Surgery Operating Platform" disclosed in the Chinese utility model patent with patent number 201420444872.2 (authorization announcement number CN 204092191 U) has a membranous channel on the inner clamp ring, an outer clamp ring sealing ring is arranged at the upper end of the membranous channel, the outer clamp ring is connected to the outer clamp ring sealing ring, the movable instrument operating platform is connected to the outer clamp ring through the outer clamp ring sealing ring, the membranous instrument channel and the ventilation duct are fixed at the upper end of the movable instrument operating platform, and are integrated with the movable instrument operating platform, and the membranous instrument channel is provided with multiple, and each of them is of different sizes and lengths. Although the operating platform can realize the combination of incision expansion and fixation with the insertion of multiple instruments in a single channel, and can fully expand and utilize the surgical incision and increase the range of motion of surgical instruments, reduce instrument conflicts, and has multiple functional advantages such as reducing the number of surgical incisions for patients, expanding, fixing, and protecting surgical incisions, and increasing the range of motion of single-channel surgical instruments, it provides convenience for single-port and natural cavity laparoscopic surgery and reduces the difficulty of single-port and natural cavity laparoscopic surgery. However, its membranous instrument channel and movable instrument operating platform are separate structures and need to be manufactured separately through two different molds. Not only is the manufacturing cost high and the structure relatively complex, but after the two different components are combined, it is necessary not only to solve the sealing problem between the membranous instrument channel and the movable instrument operating platform, but also to solve the sealing problem between the membranous instrument channel and the surgical instrument. If not handled properly, it is easy to cause air leakage, which in turn affects the reliability of the device. In addition, compared with the bare instruments passing directly through a simple sealing structure, the membranous instrument channel assists in achieving the sealing of laparoscopic surgical instruments, because the outer diameter of the membranous instrument channel is definitely significantly increased compared to the outer diameter of the bare instruments. When the instruments need to be close to each other to provide a larger operating angle, the solution of using the membranous instrument channel to assist in achieving the sealing function has obvious defects compared to the bare instruments passing directly through a simple sealing structure. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a sealing device for single-incision laparoscopic surgery with a simple sealing structure and convenient processing and manufacturing in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the sealing device for single-incision laparoscopic surgery is characterized in that it includes an upper sealing cover, a lower sleeve and a sealing connector for sealingly connecting the upper sealing cover and the lower sleeve, the upper sealing cover is an integrally formed flexible part, and the top of the upper sealing cover is formed with an operating hole for forming an instrument channel, there are at least two operating holes, and the operating holes are provided with incisions for surgical instruments to pass through and can be self-sealed.

[0005] Preferably, the operating hole is a countersunk hole, and the incision is arranged at the bottom of the countersunk hole. The incision includes a central cutting point located at the bottom of the countersunk hole and cutting edges scattered from the central cutting point from the inside to the outside, the inner section of the cutting edge forms a cutting edge, and the outer section of the cutting edge forms a strip groove, and the strip groove is arranged on the outer bottom surface or the inner bottom surface of the countersunk hole.

[0006] In order to enable the opened incision to better embrace the outer wall of the surgical instrument, an annular reinforcing rib is formed on the outer bottom surface of the countersunk hole, and the connection between the cut edge and the strip groove is arranged at a position corresponding to the annular reinforcing rib.

[0007] In order to make the countersunk hole provide better support for the surgical instrument, the countersunk hole is a circular hole, and the lower peripheral wall of the countersunk hole forms an inner convex portion protruding inside the countersunk hole. The inner convex portions are distributed at intervals along the circumference, and the outer end of the strip groove is close to the corresponding inner convex portion.

[0008] There may be multiple cutting edges. Preferably, there are at least three cutting edges and the angles between adjacent cutting edges are equal.

[0009] Further preferably, there are four cutting edges, and correspondingly, the incision forms a cross-shaped incision.

[0010] Further preferably, an air inlet pipe is externally connected to the lower sleeve.

[0011] In order to seal the upper sealing cover to the lower sleeve, preferably, the sealing connector includes an inner support and an outer fixing member, the lower port of the upper sealing cover and the upper port of the lower sleeve are both connected to the inner support, the outer fixing member is arranged on the outer periphery of the inner support, and the upper sealing cover and the lower sleeve are fastened between the inner support and the outer fixing member.

[0012] Further preferably, the outer peripheral wall of the inner support is provided with an upper limit groove and a lower limit groove distributed along the circumferential direction, the inner peripheral wall of the lower port of the upper sealing cover has an upper limit convex rib embedded in the upper limit groove, the inner peripheral wall of the upper port of the lower sleeve has a lower limit convex rib embedded in the lower limit groove, and the outer fixing member is wrapped around the outer peripheral wall of the lower port of the upper sealing cover and the outer peripheral wall of the upper port of the lower sleeve. In this way, the upper sealing cover and the lower sleeve can be sealed and connected to prevent air leakage of the device.

[0013] The inner support member may have a variety of structures. As a preferred solution, the inner support member is a circular ring.

[0014] As another preferred solution, the inner support member is a disc, and through holes are opened on the disc corresponding to the operating holes one by one above and below.

[0015] Further preferably, the through hole includes a central through hole and a peripheral through hole, wherein the central through hole is a circular hole and the peripheral through hole is a waist-shaped hole. In this way, the laparoscopic surgical instrument can be supported while the activity restriction is minimized while the support strength of the disc is ensured.

[0016] More preferably, the edges of the through holes are formed with reinforcing ribs, so that the structural strength of the disc can be improved.

[0017] The external fixing member may adopt a variety of different structures. Preferably, the external fixing member is a ferrule or a clamp.

[0018] Compared with the prior art, the advantages of the present invention are: the sealing device for laparoscopic surgery seals the upper sealing cover and the lower sleeve together through a sealing connector, the upper sealing cover adopts an integrally formed flexible part, the structure is simple, the processing and manufacturing are convenient, and the cost is low. When in use, the surgical instrument can pass through the countersunk hole on the top of the sealing cover body, and the incision at the bottom of the countersunk hole can allow the surgical instrument to pass through while holding the outer wall of the instrument tightly, thereby avoiding air leakage at the incision, and the sealing effect is good. When the instrument does not pass through, the incision can achieve self-sealing, and because the bare instrument is directly sealed through the upper sealing cover, it is conducive to the instruments to be close to each other, and the flexibility of instrument operation is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0020] Figure 2 It is a three-dimensional exploded schematic diagram of the first embodiment of the present invention;

[0021] Figure 3 It is a structural cross-sectional view of Embodiment 1 of the present invention;

[0022] Figure 4 It is a structural schematic diagram of an upper sealing cover according to the first embodiment of the present invention;

[0023] Figure 5 for Figure 4 A schematic diagram of the structure of the upper sealing cover at another angle shown;

[0024] Figure 6 for Figure 4 A top view of the upper sealing cover shown;

[0025] Figure 7 for Figure 6 A magnified schematic diagram of part A;

[0026] Figure 8 for Figure 4 Structural sectional view of the upper sealing cover shown

[0027] Fig. 9 It is a schematic structural diagram of an inner support member according to a second embodiment of the present invention;

[0028] Fig.10 It is a structural cross-sectional view of the second embodiment of the present invention;

[0029] Fig.11 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0030] Fig.12 This is a three-dimensional exploded schematic diagram of the third embodiment of the present invention;

[0031] Fig.13 It is a three-dimensional exploded schematic diagram of embodiment 4 of the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1:

[0034] like Figures 1 to 3 As shown, the sealing device for single-incision laparoscopic surgery of this embodiment comprises an upper sealing cover 1, a lower sleeve 2 and a sealing connector, wherein the sealing connector is connected between the upper sealing cover and the lower sleeve. The lower sleeve 2 is through-connected from top to bottom, and the upper port of the lower sleeve 2 is connected to the upper sealing cover 1 through the sealing connector, and the lower port of the lower sleeve 2 has an outer flange 21, and an air inlet pipe 4 is externally connected to the lower sleeve 2, and an air inlet valve 41 is installed on the air inlet pipe 4, and air is inflated into the lower sleeve 2 through the air inlet pipe 4 and the air inlet valve 41.

[0035] like Figures 4 to 8 As shown, the upper sealing cover 1 of this embodiment is an integrally formed flexible member, such as silicone, rubber, polyurethane, etc. Five operation holes are formed on the top of the upper sealing cover 1. The operation holes of this embodiment are countersunk holes 11, one of which is located at the center of the top cover 11, and the other four countersunk holes 11 are evenly distributed around the central countersunk hole. The countersunk holes 11 of this embodiment are circular holes used to form instrument channels, and the bottom of the countersunk holes 11 is provided with an incision 12 for surgical instruments (not shown) to pass through.

[0036] The incision 12 of the present embodiment can achieve self-sealing, and the specific structure of the incision 12 is: the incision 12 includes a central cutting point 121 located at the bottom of the countersunk hole 11 and cutting edges 122 distributed in a scattered manner from the central cutting point from the inside to the outside, so that the incision 12 can be opened to the surroundings. The cutting edges 122 of the present embodiment have 4 and are distributed in a cross shape, and correspondingly, the incision 12 forms a cross-shaped incision. The inner section of the cutting edge 122 forms a cutting edge 1221, that is, the inner side of the bottom of the countersunk hole 11 is cut, and the outer section of the cutting edge 122 forms a strip groove 1222, that is, the outer side of the bottom of the countersunk hole 11 is not cut. The strip groove 1222 of the present embodiment is arranged on the inner bottom surface of the countersunk hole 11. An annular reinforcement rib 111 is formed on the outer bottom surface of the countersunk hole 11, and the connection between the cutting edge 1221 and the strip groove 1222 is arranged at a position corresponding to the annular reinforcement rib 111, so as to Figure 8 The direction indicated by the middle arrow B is upward, and the annular reinforcing rib 111 passes directly below the connection between the cut edge 1221 and the strip groove 1222 .

[0037] After the annular reinforcing rib 111 is provided, the incision 12 can be prevented from being excessively opened, and at the same time, the opened incision 12 has good rebound force. When the surgical instrument passes through the incision 12, the opening of the incision 12 can better hold the outer wall of the instrument tightly, avoid air leakage between the instrument and the incision 12, and ensure the air tightness of the sealing device. In particular, through the structure of the annular reinforcing rib 111 and the strip groove 1222, the incision 12 can be made to contact more closely with the outer wall of the instrument, and the air leakage prevention effect is better. When no surgical instrument passes through the incision 12, the cutting edges 122 of the incision 12 are reset, and the cutting edges 122 are closed, so that the incision 12 achieves a self-sealing effect.

[0038] In addition, the lower peripheral wall of the countersunk hole 11 forms an inner convex portion 112 protruding from the inside of the countersunk hole 11, and the outer end of the strip groove 1222 is close to the corresponding inner convex portion 112. The inner convex portion 112 not only makes the countersunk hole 11 structure more solid, but also facilitates the smooth passage of the instrument through the opening located in the center without hitting the blind end in the bottom corner and causing it to be unable to pass.

[0039] The sealing connector includes an inner support and an outer fixing member. The lower port of the upper sealing cover 1 and the upper port of the lower sleeve 2 are both connected to the inner support. The outer fixing member is arranged on the outer periphery of the inner support. The upper sealing cover 1 and the lower sleeve 2 are fastened between the inner support and the outer fixing member.

[0040] The inner support member of this embodiment is a disc 32, on which a through hole 321 corresponding to the countersunk hole 11 is formed, and the upper and lower edges of the through hole 321 are provided with reinforcing ribs 322 to improve the strength of the through hole 321. The through hole 321 of this embodiment includes a central through hole and peripheral through holes around the central through hole, wherein the central through hole is a circular hole and the peripheral through holes are waist-shaped holes, so as to ensure the support strength of the disc and support the laparoscopic surgical instruments while minimizing the restriction on their movement.

[0041] An upper limit groove 35 and a lower limit groove 36 are provided on the outer peripheral wall of the disc 32, an upper limit rib 13 is provided on the inner peripheral wall of the lower port of the upper sealing cover 1, and a lower limit rib 22 is provided on the inner peripheral wall of the upper port of the lower sleeve 2. The external fixing member of this embodiment is a ferrule 33. During installation, first, the upper limit rib 13 of the upper sealing cover 1 is embedded in the upper limit groove 35 of the disc 32, and the lower limit rib 22 of the lower sleeve 2 is embedded in the lower limit groove 36 of the disc 32; then, the ferrule 33 is wrapped around the outer peripheral wall of the lower port of the upper sealing cover 1 and the outer peripheral wall of the upper port of the lower sleeve 2, so that the upper sealing cover 1 and the lower sleeve 2 can be sealed and connected together.

[0042] Embodiment 2:

[0043] like Fig. 9 and Fig.10 As shown, compared with the first embodiment, the edge of the through hole of the disk 32 of this embodiment does not have a reinforcing rib, and the remaining structure is the same as that of the first embodiment, which will not be described in detail here.

[0044] Embodiment three:

[0045] like Fig.11 and Fig.12 As shown, the external fixing member of this embodiment is a clamp 34. When installing, when the upper sealing cover 1 and the lower sleeve 2 are connected to the disc 32, the clamp 34 is buckled to clamp the upper sealing cover 1 and the lower sleeve 2. When disassembling, just open the clamp 34, which is very convenient.

[0046] Embodiment 4:

[0047] like Fig.13 As shown, the inner support member of this embodiment is a circular ring 31, and the remaining structures are the same as those of the first embodiment, and will not be described in detail here.

[0048] The above description is only a preferred embodiment of the present invention. It should be pointed out that, for a person skilled in the art, various modifications or improvements can be made to the present invention without departing from the principle of the present invention. For example, the number of countersunk holes 11 is not limited to 5, and the incision 12 is not limited to a cross-shaped incision. Other forms of incisions can also be used. These are all considered to be within the scope of protection of the present invention.

Claims

1. A sealing device for single-incision laparoscopic surgery, characterized in that: The invention comprises an upper sealing cover (1), a lower sleeve (2) and a sealing connector for connecting the upper sealing cover (1) and the lower sleeve (2); the upper sealing cover (1) is an integrally formed flexible member; the top of the upper sealing cover (1) is formed with an operating hole for forming an instrument channel; the operating holes are at least two; the operating holes are provided with a self-sealing incision (12) for passing surgical instruments; the operating hole is a countersunk hole (11); the incision (12) is arranged at the bottom of the countersunk hole (11); the incision (12) comprises a central cutting point (121) located at the bottom of the countersunk hole (11) and cutting edges (122) distributed in a scattered manner from the central cutting point from the inside to the outside; The inner section of the cutting edge (122) forms a cutting edge (1221), and the outer section of the cutting edge (122) forms a strip groove (1222). The strip groove (1222) is arranged on the outer bottom surface or the inner bottom surface of the countersunk hole. An annular reinforcing rib (111) is formed on the outer bottom surface of the countersunk hole (11). The connection between the cutting edge (1221) and the strip groove (1222) is arranged at a position corresponding to the annular reinforcing rib (111). The lower peripheral wall of the countersunk hole (11) forms an inner convex portion (112) protruding inside the countersunk hole. The inner convex portions (112) are spaced apart along the circumferential direction, and the outer ends of the strip grooves (1222) are close to the corresponding inner convex portions (112).

2. The sealing device for single-incision laparoscopic surgery according to claim 1, characterized in that: The countersunk hole (11) is a circular hole.

3. The sealing device for single-incision laparoscopic surgery according to claim 1, characterized in that: An air intake pipe (4) is externally connected to the lower sleeve (2).

4. The sealing device for single-incision laparoscopic surgery according to any one of claims 1 to 3, characterized in that: The sealing connector comprises an inner support member and an outer fixing member, the lower port of the upper sealing cover (1) and the upper port of the lower sleeve (2) are both connected to the inner support member, the outer fixing member is arranged on the outer periphery of the inner support member, and the upper sealing cover (1) and the lower sleeve (2) are fastened between the inner support member and the outer fixing member.

5. The sealing device for single-incision laparoscopic surgery according to claim 4, characterized in that: An upper limit groove (35) and a lower limit groove (36) distributed along the circumferential direction are provided on the outer peripheral wall of the inner support member; the inner peripheral wall of the lower port of the upper sealing cover (1) has an upper limit convex rib (13) embedded in the upper limit groove (35); the inner peripheral wall of the upper port of the lower sleeve (2) has a lower limit convex rib (22) embedded in the lower limit groove (36); and the external fixing member is wrapped around the outer peripheral wall of the lower port of the upper sealing cover (1) and the outer peripheral wall of the upper port of the lower sleeve (2).

6. The sealing device for single-incision laparoscopic surgery according to claim 5, characterized in that: The inner support member is a circular ring (31).

7. The sealing device for single-incision laparoscopic surgery according to claim 5, characterized in that: The inner support member is a disk (32), and the disk (32) is provided with through holes (321) corresponding to the operation holes one by one above and below.

8. The sealing device for single-incision laparoscopic surgery according to claim 5, characterized in that: The external fixing member is a ferrule (33) or a clamp (34).

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