Single-hole multi-channel surgical puncture outfit

Abstract

The utility model relates to the technical field of medical instruments, and provides a single-hole multi-channel surgical puncture outfit which comprises a rigid tube and a flexible tube which are sequentially connected from near to far, the rigid tube is used for being inserted into the anus, and the rigid tube and the flexible tube are coaxially arranged and communicated. A first connecting structure is arranged on the outer wall of the far end of the rigid pipe, the far end of the flexible pipe is turned outwards and curled towards the near position, the turned-outwards flexible pipe can be fixedly connected with the rigid pipe in a sealed mode through the first connecting structure, and a gap is formed between the turned-outwards flexible pipe and the rigid pipe to form an annular air bag; an inflation hole is formed in the position, corresponding to the annular air bag, of the rigid pipe and can be communicated with the air bag, the inflation hole is communicated with the first end of an inflation pipe, and the second end of the inflation pipe is used for being communicated with an air source. The shape is simple, and industrial manufacturing and production are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a single-hole multi-channel surgical puncture device. Background Technology

[0002] In recent years, minimally invasive anorectal surgery has developed rapidly due to its advantages such as small surgical incisions, short treatment time, less patient pain, and faster recovery. Transanal endoscopic rectal microsurgery is a type of surgery that uses minimally invasive methods to locally remove diseased tissue in the rectum. Typically, one end of a single-port multi-channel surgical trocar is inserted into the anus, and specially designed extended surgical instruments are inserted through the channels of the trocar. Under the monitoring and guidance of a monitor, the surgeon manipulates the surgical instruments outside the trocar to perform operations such as exploration, electrocoagulation, hemostasis, tissue separation and incision, and suturing of the diseased tissue.

[0003] like Figure 1 As shown, a single-port multi-channel surgical trocar typically includes a multi-channel platform and a rigid tube 2 connected in sequence. The rigid tube 2 is inserted into the anus, while the multi-channel platform is located outside the anus. Each channel of the multi-channel platform communicates with the rigid tube 2 to provide a path for surgical instruments to enter the rectum. To ensure the single-port multi-channel surgical trocar remains stable after insertion into the anus, a conical ring 28 with a tapered surface extending distally along the outer circumference of the rigid tube 2 is usually fixedly installed at the distal end. After the rigid tube 2 is inserted into the anus, the conical ring 28 is used to hook onto the connection between the surgical anal canal and the rectum, axially fixing the rigid tube 2. Generally, the maximum diameter of the conical ring 28 is 0.8–1.5 cm larger than the diameter of the straight section of the rigid tube 2 (i.e., the part of the rigid tube 2 corresponding to the surgical anal canal after insertion into the anus). This makes it difficult to insert the rigid tube 2 into the anus and may even cause some damage to the anus.

[0004] To facilitate the insertion of a rigid tube into the anus, a single-port multi-channel surgical trocar exists. The distal end of the rigid tube is fixedly equipped with a ring-shaped balloon extending along its outer circumference. The proximal end of the trocar has an inflation connector, and the ring-shaped balloon communicates with the inflation connector. This allows the rigid tube to be inserted into or withdrawn from the anus when the ring-shaped balloon is in a contracted state, facilitating operation by medical personnel and protecting the anus. After the rigid tube is inserted into the anus, the ring-shaped balloon is located at the junction of the surgical anal canal and rectum, while the inflation connector is located outside the anus. Inflation of the ring-shaped balloon through the inflation connector causes it to protrude from the outer surface of the rigid tube, allowing it to attach to the junction of the surgical anal canal and rectum, thus axially fixing the rigid tube.

[0005] However, the aforementioned single-port multi-channel surgical trocar with an annular balloon results in a complex shape for the rigid tube, which is not conducive to industrial manufacturing. Therefore, there is an urgent need to develop an improved single-port multi-channel surgical trocar. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a single-hole multi-channel surgical puncture device with a simple shape that is easy to manufacture in industry.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] This utility model provides a single-hole multi-channel surgical trocar, comprising a rigid tube and a flexible tube connected sequentially from proximal to distal. The rigid tube is used for insertion into the anus, and the rigid tube and the flexible tube are coaxially arranged and connected. The outer wall of the distal end of the rigid tube has a first connecting structure. The distal end of the flexible tube is turned outward and curled towards the proximal end. The turned-out flexible tube can be sealed and fixedly connected to the rigid tube through the first connecting structure. There is a gap between the turned-out flexible tube and the rigid tube to form an annular air bladder. An inflation hole is opened on the rigid tube corresponding to the position of the annular air bladder. The inflation hole can be connected to the air bladder and is connected to the first end of the inflation tube. The second end of the inflation tube is used to connect to an air source.

[0011] Optionally, after the rigid tube is inserted into the anus, the annular balloon is located at the junction of the surgical anal canal and the rectum, and the second end of the inflatable tube is located outside the anus.

[0012] Optionally, the flexible tube and the rigid tube are integrated; or, the flexible tube and the rigid tube are separate, with the rigid tube having a second connecting structure, through which the flexible tube can be fixedly connected to the rigid tube.

[0013] Optionally, the connection point between the flexible tube and the rigid tube is located near the distal end of the rigid tube.

[0014] Optionally, after an annular air bladder is formed between the outwardly folded flexible tube and the rigid tube, the distal end of the rigid tube extends into the annular air bladder.

[0015] Optionally, the outer peripheral surface of the far end of the rigid tube is a tapered surface facing the distance.

[0016] Optionally, the first connecting structure is an adhesive structure that surrounds the outer periphery of the rigid tube, and the outwardly folded flexible tube is bonded to the adhesive structure, so that an annular airbag is formed between the outwardly folded flexible tube and the rigid tube.

[0017] Optionally, after the rigid tube is inserted into the anus, the distal end of the rigid tube is located outside the anus, and the second end of the inflatable tube is located at the distal end of the rigid tube.

[0018] Optionally, an inflation tube placement groove extending in the proximal direction is provided on the inner wall of the rigid tube. The distal end of the rigid tube has a funnel-shaped opening for fitting the skin, and a through hole is provided on the funnel-shaped opening. The distal end of the inflation tube placement groove is connected to the inflation hole, and the proximal end of the inflation tube placement groove is connected to the through hole. The inflation tube is located in the inflation tube placement groove, the first end of the inflation tube is connected to the inflation hole, and the second end of the inflation tube extends through the through hole to the outside of the rigid tube.

[0019] Optionally, the distal end of the flexible tube is flared.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] The single-port multi-channel surgical trocar provided by this invention does not have an annular air bladder in its shape, making the trocar simple in shape, conducive to industrial production and manufacturing, and low in cost. When using the single-port multi-channel surgical trocar provided by this invention, the operator can externally evert the distal end of the flexible tube and roll it proximally, so that the everted flexible tube is sealed and fixedly connected to the rigid tube through the first connecting structure, forming an annular air bladder between the everted flexible tube and the rigid tube. Then, when the annular air bladder is in a contracted state, the rigid tube is inserted into the anus, facilitating operation by medical personnel and protecting the anus. After the rigid tube is inserted into the anus, the annular air bladder is located at the junction of the surgical anal canal and rectum, and the second end of the inflation tube is located outside the anus. Inflation is performed through the second end of the inflation tube to the annular air bladder. The inflated annular air bladder protrudes from the outer surface of the rigid tube and can be hooked at the junction of the surgical anal canal and rectum, achieving axial fixation of the rigid tube. Therefore, the single-port multi-channel surgical trocar provided by this invention has a simple shape, is conducive to industrial production and manufacturing, is easy to insert into the anus, and can maintain a stable position after insertion. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a single-port multi-channel surgical trocar based on the prior art;

[0024] Figure 2 This is a schematic diagram of the combined structure of the rigid tube and the flexible tube according to Embodiment 1, wherein the flexible tube is not turned outward to form an annular airbag;

[0025] Figure 3 This is a schematic diagram of the combined structure of a rigid tube and a flexible tube according to Embodiment 1, wherein the flexible tube is turned outward to form an annular airbag;

[0026] Figure 4 This is a schematic diagram of the single-port multi-channel surgical trocar according to Example 1.

[0027] Explanation of reference numerals in the attached figures

[0028] 1: Channel platform;

[0029] 2: Rigid pipe;

[0030] 21: First connecting structure; 22: Inflation hole; 23: Conical surface; 24: Inflation tube placement groove; 25: Trumpet-shaped opening; 26: Through hole; 27: Threaded tube; 28: Conical ring; 29: Anti-slip ring;

[0031] 3: Flexible pipe;

[0032] 31: Ring-shaped airbag;

[0033] 4: Inflation tube. Detailed Implementation

[0034] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, "axial" refers to the axial direction of the rigid tube, "near" refers to the side closer to the operator, and "far" refers to the side closer to the patient.

[0035] Example 1

[0036] like Figures 2 to 4 As shown, this embodiment provides a single-port multi-channel surgical trocar, including a channel platform 1, a rigid tube 2, and a flexible tube 3 connected sequentially from proximal to distal. The channel platform 1 has at least one channel, which communicates with the rigid tube 2 to provide a path for surgical instruments to enter the rectum. The rigid tube 2 and the flexible tube 3 are coaxially arranged and communicate with each other. The distal outer wall of the rigid tube 2 has a first connecting structure 21. The distal end of the flexible tube 3 is everted and curled proximally. The everted flexible tube 3 can be sealed and fixedly connected to the rigid tube 2 through the first connecting structure 21. There is a gap between the everted flexible tube 3 and the rigid tube 2 to form an annular air bladder 31. The rigid tube 2 has an inflation hole 22 at the position corresponding to the annular air bladder 31. The inflation hole 22 can communicate with the annular air bladder 31. The inflation hole 22 is connected to the first end of the inflation tube 4, and the second end of the inflation tube 4 is used to communicate with a gas source.

[0037] Among them, the rigid tube 2 is used to insert into the anus. After the rigid tube 2 is inserted into the anus, the annular air bladder 31 is located at the connection between the surgical anal canal and the rectum, and the second end of the inflatable tube 4 is located outside the anus.

[0038] This single-port multi-channel surgical trocar, designed in this way, lacks the annular balloon 31 in its shape, resulting in a simple shape that facilitates industrial manufacturing and reduces costs. When using the single-port multi-channel surgical trocar provided in this embodiment, the operator can externally evert the distal end of the flexible tube 3 and roll it closer to the proximal end, sealing and fixing the everted flexible tube 3 to the rigid tube 2 via the first connecting structure 21. This forms an annular balloon 31 between the everted flexible tube 3 and the rigid tube 2. Then, when the annular balloon 31 is in a contracted state, the rigid tube 2 is inserted into the anus, facilitating operation by medical personnel and protecting the anus. After the rigid tube 2 is inserted into the anus, the annular balloon 31 is located at the connection between the surgical anal canal and the rectum. The second end of the inflation tube 4 is located outside the anus, and air is inflated into the annular balloon 31 through the second end of the inflation tube 4. The inflated annular balloon 31 protrudes from the outer surface of the rigid tube 2 and can be hooked at the connection between the surgical anal canal and the rectum, axially fixing the rigid tube 2. Therefore, the single-port multi-channel surgical trocar provided in this embodiment has a simple shape, is easy to manufacture in industrial production, is easy to insert into the anus, and can maintain a stable position after insertion into the anus.

[0039] In this embodiment, the flexible tube 3 and the rigid tube 2 are integrally formed.

[0040] Preferably, the connection point between the flexible tube 3 and the rigid tube 2 is located proximal to the distal end of the rigid tube 2. In this way, after the flexible tube 3 is everted and an annular air bladder 31 is formed between it and the rigid tube 2, the distal end of the rigid tube 2 can be inserted into the anus as the starting point, facilitating the entry of the trocar into the anus.

[0041] More preferably, after an annular air bladder 31 is formed between the everted flexible tube 3 and the rigid tube 2, the distal end of the rigid tube 2 extends outward from the annular air bladder 31. This further facilitates the insertion of the rigid tube 2 into the anus.

[0042] More preferably, the outer peripheral surface of the distal end of the rigid tube 2 is a tapered surface 23 facing the distal end. This further facilitates the insertion of the rigid tube 2 into the anus.

[0043] Preferably, the first connecting structure 21 is an adhesive structure that surrounds the outer periphery of the rigid tube 2, and the outwardly folded flexible tube 3 is bonded to the adhesive structure, so that an annular airbag 31 is formed between the outwardly folded flexible tube 3 and the rigid tube 2.

[0044] Preferably, the inner wall of the flexible tube 3 has anti-slip textures. Thus, after the flexible tube 3 is everted, the anti-slip textures are located on the outer surface of the annular balloon 31. After the annular balloon 31 is inflated, the anti-slip textures can contact the rectal wall to generate greater frictional force, further ensuring the stability of the trocar's position. More preferably, the anti-slip textures are located in the middle of the flexible tube 3 in the proximal direction, and the anti-slip textures are arranged around the inner circumference of the rigid tube 2. Thus, after the flexible tube 3 is everted, the anti-slip textures can be located on the outermost surface of the annular balloon 31, which is more conducive to the frictional engagement between the anti-slip textures and the rectal wall. More preferably, the anti-slip textures are vertical lines protruding from the inner wall of the flexible tube 3 and extending in the proximal direction.

[0045] Preferably, the outer wall of the rigid tube 2 has at least two anti-slip rings 29 arranged sequentially from near to far. The anti-slip rings 29 protrude from the outer wall of the rigid tube 2 and are located near the first connecting structure 21. In this way, the anti-slip rings 29 contact the anal sphincter, increasing the friction between the anti-slip rings 29 and the anal sphincter, further ensuring the stability of the puncture device's position.

[0046] Specifically, in this embodiment, the channel platform 1 and the rigid tube 2 are detachably connected. After the rigid tube 2 is inserted into the anus, both the distal end of the rigid tube 2 and the channel platform 1 are located outside the anus.

[0047] Preferably, in this embodiment, the second end of the inflation tube 4 is located at the distal end of the rigid tube 2. Optionally, the second end of the inflation tube 4 is located on the channel platform 1.

[0048] Preferably, an inflation tube placement groove 24 extending in the proximal direction is formed on the inner wall of the rigid tube 2, and the inflation tube 4 is located in the inflation tube placement groove 24. In this way, the inflation tube 4 does not occupy the internal space of the rigid tube 2, which facilitates the insertion of surgical instruments into the rigid tube 2 for operation.

[0049] Preferably, the distal end of the rigid tube 2 has a funnel-shaped opening 25 for conforming to the skin, and a through hole 26 is provided on the funnel-shaped opening 25. The through hole 26 communicates with the proximal end of the inflation tube placement groove 24, and the second end of the inflation tube 4 extends through the through hole 26 to the outside of the rigid tube 2. In this way, the structure is simple and it is convenient for the second end of the inflation tube 4 to be connected to the air source.

[0050] Furthermore, in this embodiment, the distal end of the rigid tube 2 has a threaded tube 27, which is located near the flared opening 25 and is threadedly connected to the channel platform 1.

[0051] Furthermore, the anti-slip ring 29 is located on the far side of the flared opening 25.

[0052] Example 2

[0053] The difference between this embodiment and Embodiment 1 is that:

[0054] The distal end of the flexible tube 3 is flared. This facilitates the outward folding of the flexible tube 3, and after the flexible tube 3 is folded outward, it is convenient to bond the distal end of the flexible tube 3 to the bonding structure.

[0055] The remaining contents are the same as in Example 1, and will not be repeated here.

[0056] Example 3

[0057] The main difference between this embodiment and Embodiment 1 is:

[0058] The flexible tube 3 and the rigid tube 2 are separate components. The rigid tube 2 has a second connecting structure, through which the flexible tube 3 can be fixedly connected to the rigid tube 2. When the single-port multi-channel surgical trocar provided in this embodiment is used, the operator first connects the flexible tube 3 and the rigid tube 2 externally, and then everts the flexible tube 3 to form an annular air bladder 31. This facilitates the industrial production and manufacturing of the trocar.

[0059] Furthermore, the connection between the flexible tube 3 and the rigid tube 2 is by adhesive bonding.

[0060] The remaining contents are the same as in Example 1, and will not be repeated here.

[0061] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A single hole multi-pass surgical puncture device, comprising: The device comprises a rigid tube (2) and a flexible tube (3) connected in sequence from near to far, the rigid tube (2) is used for inserting into anus, the rigid tube (2) is coaxially arranged with the flexible tube (3) and communicates with the flexible tube (3); the outer wall of the distal end of the rigid tube (2) is provided with a first connecting structure (21), the distal end of the flexible tube (3) is turned outward and curls towards the proximal end, the turned outward flexible tube (3) can be sealingly and fixedly connected with the rigid tube (2) through the first connecting structure (21), and the turned outward flexible tube (3) and the rigid tube (2) have a gap to form an annular air bag (31); The rigid tube (2) is provided with an inflation hole (22) at a position corresponding to the annular air bag (31), the inflation hole (22) can communicate with the air bag, the inflation hole (22) communicates with a first end of an inflation tube (4), and a second end of the inflation tube (4) is used for communicating with a gas source.

2. The single-hole multi-pass surgical access port of claim 1, wherein, After the rigid tube (2) is inserted into the anus, the annular air bag (31) is located at the connection between the surgical anal tube and the rectum, and the second end of the inflation tube (4) is located outside the anus.

3. The single-hole multi-pass surgical puncture wade of claim 1, wherein, The flexible tube (3) and the rigid tube (2) are integrally arranged; or, The flexible tube (3) and the rigid tube (2) are separately arranged, the rigid tube (2) is provided with a second connecting structure, and the flexible tube (3) can be fixedly connected with the rigid tube (2) through the second connecting structure.

4. The single-hole multi-pass surgical punch of claim 1, wherein, The connection position of the flexible tube (3) and the rigid tube (2) is located proximally to the distal end of the rigid tube (2).

5. The single-hole multi-pass surgical punch of claim 1, wherein, After the turned outward flexible tube (3) and the rigid tube (2) form the annular air bag (31), the distal end of the rigid tube (2) extends out of the annular air bag (31) towards the distal end.

6. The single-hole multi-pass surgical access port of claim 1, 4, or 5, wherein, The outer peripheral surface of the distal end of the rigid tube (2) is a tapered surface (23) facing the distal end.

7. The single-hole multi-pass surgical punch of claim 1, wherein, The first connecting structure (21) is a bonding structure surrounding the rigid tube (2) along the outer periphery, the turned outward flexible tube (3) is bonded with the bonding structure, so that the turned outward flexible tube (3) and the rigid tube (2) form the annular air bag (31).

8. The single-hole multi-pass surgical punch of claim 1, wherein, After the rigid tube (2) is inserted into the anus, the distal end of the rigid tube (2) is located outside the anus, and the second end of the inflation tube (4) is arranged at the distal end of the rigid tube (2).

9. The single-hole multi-pass surgical punch of claim 1, wherein, The inner wall of the rigid tube (2) is provided with an inflation tube placing groove (24) extending in the proximal-distal direction, the distal end of the rigid tube (2) has a horn-shaped opening (25) used for abutting against the skin, the horn-shaped opening (25) is provided with a through hole (26), the distal end of the inflation tube placing groove (24) communicates with the inflation hole (22), and the proximal end of the inflation tube placing groove (24) communicates with the through hole (26); The inflation tube (4) is located in the inflation tube placing groove (24), the first end of the inflation tube (4) communicates with the inflation hole (22), and the second end of the inflation tube (4) penetrates through the through hole (26) and extends to the outside of the rigid tube (2).

10. The single-hole multi-pass surgical access port of claim 1, wherein, The distal end of the flexible tube (3) is in a horn shape.

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