Endoscope puncture outfit with adjustable outer diameter

Abstract

The utility model provides an endoscope puncture outfit with an adjustable outer diameter, and belongs to the technical field of endoscope puncture outfits. Comprising a puncture outfit sleeve shell body, a first sheet body is fixedly connected to the inner wall of the puncture outfit sleeve shell body, a second sheet body is inserted into the first sheet body, a third sheet body is inserted into the second sheet body, and a fourth sheet body is inserted into the third sheet body. Through the arrangement of the limiting mechanism and the sealing assembly, the inner diameter of the device can be rapidly adjusted according to the specific use condition on site through the cooperative use of the first sheet body, the second sheet body, the third sheet body and the fourth sheet body which are arranged together in a shingled sleeve mode. When the inner diameter of the device is adjusted, the limiting mechanism can be used for stably limiting the inner diameter of the device within a required range, so that the stability of the device is better when the device is used, and the device can be better matched with various surgical instruments with different diameters for use.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope puncture ware technical field, especially a kind of adjustable outer diameter's endoscope puncture ware. BACKGROUND

[0002] Endoscope channel puncture ware is used for the medical instrument of auxiliary endoscopic surgery, mainly for establishing operation channel, to facilitate surgical instrument to enter, and then carry out surgical operation. It has the characteristics such as simple structure, convenient operation, safe and effective. Endoscope channel puncture ware is usually composed of core rod, working sheath, puncture component and connecting component. Among them, working sheath can be moved along the core rod, and its inner wall is covered with protective sleeve, when operation is completed, core rod and protective sleeve can be removed, and working sheath is left in tissue to establish operation channel.

[0003] Most of the related endoscope channel puncture ware of prior art is not adjustable in size, so different sizes of endoscope channel puncture ware need to be used in different surgical operations, and during the replacement of endoscope channel puncture ware, it is easy to cause skin trauma and incisional hernia risk of patient. Generally, in endoscopic surgery, more than 95% of the time of surgical operation uses endoscope instrument with outer diameter of 5mm, only in a very small amount of time, endoscope instrument with outer diameter of 10mm, 12mm or even 15mm, such as clip applier and cutting stapler, is needed to be used, and the replacement of puncture ware with large diameter is easy to cause secondary injury to abdominal wall muscle, blood vessels and other tissues, and at the same time, it causes the decrease of local abdominal wall strength and increases the risk of incisional hernia. If large-diameter puncture ware is directly used, the greater the outer diameter of endoscope puncture ware, the greater the damage to abdominal wall, and the higher the risk of incisional hernia at the puncture ware site after operation, therefore, the present application provides an adjustable outer diameter endoscope puncture ware to meet the needs. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide an adjustable outer diameter endoscope puncture ware, by setting limiting mechanism and sealing assembly, not only the cooperation of first piece, second piece, third piece and fourth piece set together in the form of imbricated sleeve can be used to quickly adjust the inner diameter of the device according to the specific use condition on site, but also the limiting mechanism can be used to stably limit the inner diameter of the device within the required range when adjusting the inner diameter of the device, and the above settings can solve the problem that the inner diameter and outer diameter of the existing endoscope puncture ware cannot be adjusted during use.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] The utility model provides an adjustable outer diameter's endoscope puncture ware, including puncture ware sleeve shell main part, the inner wall fixed connection of puncture ware sleeve shell main part has first sheet, the second sheet is inserted in first sheet, the third sheet is inserted in second sheet, the fourth sheet is inserted in third sheet, the inner wall of one side end of first sheet, second sheet and third sheet is opposite to the both limit piece that sets up, the outer wall of one side end of second sheet, third sheet and fourth sheet is opposite and is set up two limit slot, one side fixed connection of puncture ware sleeve shell main part has trachea connection end head piece, the bottom fixed connection of trachea connection end head piece has the ventilation pipe body, limit mechanism, limit mechanism is used for to first sheet one side end quick fixed, limit mechanism is connected with first sheet, sealing assembly, sealing assembly is used for quick sealing device, sealing assembly is connected with puncture ware sleeve shell main part.

[0007] Optionally, the limiting mechanism includes a fixing frame installed on the first sheet, a lightening groove is equidistantly formed on the fixing frame, a movable groove is formed on the top of the puncture ware sleeve shell main body, four insertion groove bodies are formed on the top of the puncture ware sleeve shell main body, a limiting rod is installed on the side of the puncture ware sleeve shell main body close to the fixing frame, a first limiting branch rod matched with the shape of the lightening groove is fixedly connected to the side of the limiting rod close to the fixing frame, and a second limiting branch rod matched with the shape of the insertion groove body is fixedly connected to the side of the limiting rod close to the puncture ware sleeve shell main body.

[0008] Optionally, the first limiting branch rod is perpendicular to the second limiting branch rod, the limiting rod, the first limiting branch rod, and the second limiting branch rod are integrally formed, and the limiting rod is made of plastic.

[0009] Optionally, an end block is arranged on the side of the second limiting branch rod close to the puncture ware sleeve shell main body, a buffer cavity body is formed in the end block, and the end block is made of silica gel.

[0010] Optionally, the sealing assembly includes a first sealing sheet installed on the puncture ware sleeve shell main body, a second sealing sheet is installed on the outer wall of the first sealing sheet, a third sealing sheet is installed on the outer wall of the second sealing sheet, and a fourth sealing sheet is installed on the outer wall of the third sealing sheet.

[0011] Optionally, the inner wall shape of the first sealing sheet is adapted to the outer wall shape of the structure formed by the first sheet body, the second sheet body, the third sheet body and the fourth sheet body in a 5mm diameter state, the inner wall shape of the second sealing sheet is adapted to the outer wall shape of the structure formed by the first sheet body, the second sheet body, the third sheet body and the fourth sheet body in a 10mm diameter state, the inner wall shape of the third sealing sheet is adapted to the outer wall shape of the structure formed by the first sheet body, the second sheet body, the third sheet body and the fourth sheet body in a 12mm diameter state, and the inner wall shape of the fourth sealing sheet is adapted to the outer wall shape of the structure formed by the first sheet body, the second sheet body, the third sheet body and the fourth sheet body in a 15mm diameter state.

[0012] Optionally, the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet are all made of rubber material, a sealing strip is mounted between the top of the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet, a sealing groove is formed in the top of the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet, and a zipper body is mounted between the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet.

[0013] Optionally, the cross section of the sealing strip is π-shaped, there are three sealing strips, and the inner diameters of the three sealing strips are different, corresponding to sealing use in different size states.

[0014] Optionally, the outer wall of the first sealing sheet, the second sealing sheet and the third sealing sheet is fixedly connected with an insertion sheet on one side, and the inner wall of the second sealing sheet, the third sealing sheet and the fourth sealing sheet is provided with an insertion groove matched with the shape of the insertion sheet.

[0015] Optionally, the movable groove formed in the outer shell body of the puncture device sleeve is not through, the cross section of the fixing frame is U-shaped, and the outer wall edge of the fixing frame is arc-shaped.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the above scheme, by setting the limiting mechanism and the sealing assembly, the inner diameter of the device can be quickly adjusted according to the specific use on site by using the cooperation of the first sheet, the second sheet, the third sheet and the fourth sheet arranged together in the form of a shingle sleeve. Moreover, when adjusting the inner diameter of the device, the limiting mechanism can stably limit the inner diameter of the device within the required range, so that the device has good stability when in use, and can better cooperate with various surgical instruments of different diameters. At the same time, the cooperation of the sealing assembly further enhances the stability of the device while ensuring the sealing performance of the device, so that the patient has a better operating field in the abdominal cavity, thereby facilitating the surgical operation of the doctor. Compared with the traditional fixed outer diameter of the laparoscope puncture device, the doctor can adjust the inner diameter of the puncture device in real time according to the outer diameter of the laparoscope instrument during the operation, and at the same time, the outer diameter of the puncture device is correspondingly increased. After that, the 5mm inner diameter can be adjusted back in time, and the outer diameter of the puncture device is correspondingly reduced. Since the abdominal wall has excellent elasticity, the puncture hole is correspondingly retracted. This design can minimize abdominal wall trauma and reduce the risk of postoperative incisional hernia. This innovative design greatly improves the versatility and adaptability of the puncture device, while reducing the risk of surgical complications such as tissue damage and incisional hernia caused by replacing the puncture device or directly using a larger diameter puncture device. The device can meet the commonly used 5mm, 10mm, 12mm and 15mm diameter laparoscope instruments, and can be seamlessly used with the mainstream laparoscope equipment on the market without the need for additional adapters or conversion devices, reducing the cost of equipment procurement and the complexity of use in hospitals. Moreover, the structure of the device is simple, convenient and fast to use.

[0018] By providing a lightening slot, a movable slot and a slot body in the limiting mechanism, the user holds the fixed frame with his hand, pushes the fixed frame to make the fixed frame rotate along the movable slot, and adjusts the depth of the fixed frame inserted into the movable slot. Through the above adjustment, the degree of expansion of the first sheet and the position of the end of the first sheet close to the fixed frame can be changed, and the second sheet, the third sheet and the fourth sheet inserted in the first sheet naturally expand under the influence of their own expansion force, so that the inner diameter of the device is quickly adjusted and expanded to the required state. When the first sheet, the second sheet, the third sheet and the fourth sheet are expanded to form a structure with the required inner diameter, the fixed frame is aligned with the corresponding slot body, the first limiting support rod is inserted into the lightening slot, and the second limiting support rod is inserted into the slot body, so as to limit the position and depth of the fixed frame, so that the first sheet, the second sheet, the third sheet and the fourth sheet do not continue to expand. The cooperation between the structures can quickly adjust the inner diameter and the corresponding outer diameter of the device in a short time, and the cooperation between the structures effectively makes the limiting mechanism have better use effect, and the structure is simple and convenient to use.

[0019] By setting the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet in the sealing assembly, the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet can be used in cooperation to further limit the outer wall of the structure formed by the first sheet body, the second sheet body, the third sheet body and the fourth sheet body after the device is adjusted to the required position according to the specific use condition of the site, thereby enhancing the stability of the first sheet body, the second sheet body, the third sheet body and the fourth sheet body, and the structure formed by the above four and the corresponding inner diameter size formed thereby are pressed against the inner wall of the first sealing sheet, the second sealing sheet, the third sealing sheet or the fourth sealing sheet when used, thereby realizing the quick sealing effect between the structures, further ensuring the good sealing property in the device, thereby being capable of maintaining the stable environment in the abdominal cavity, reducing the interference to the organs in the abdominal cavity, and the cooperation between the structures effectively makes the sealing assembly have better use effect, and the structure is simple and convenient to use.

[0020] By setting the sealing strip, the sealing groove and the zipper body in the sealing assembly, the sealing property of the connection gap between the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet can be ensured by the cooperation of the sealing strip and the sealing groove, and the zipper body is installed between the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet, thereby further improving the stability of the connection between the first sealing sheet, the second sealing sheet, the third sealing sheet and the fourth sealing sheet, thereby ensuring that the entire device has good sealing property and better stability, and the structure is simple, and the cooperation between the structures further makes the sealing structure have better use effect, and the cooperation between the structures effectively makes the sealing assembly have better use effect, and the structure is simple and convenient to use.

[0021] In summary, the device can be quickly adjusted in a short time by the cooperation of the limiting mechanism and the components in the sealing assembly, has good sealing property, has simple structure, is convenient and fast to use, has low production cost, has good practicability, and is convenient to popularize and use. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and to enable a person skilled in the relevant art to make and use the present application.

[0023] Figure 1 First perspective view of the adjustable outer diameter endoscope puncture device;

[0024] Figure 2 isFigure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 3 A two-dimensional structural diagram of an adjustable-outer-diameter laparoscopic trocar from a second-view perspective.

[0026] Figure 4 A schematic diagram of an adjustable-outer-diameter laparoscopic trocar.

[0027] Figure 5 A schematic diagram of the cross-sectional structure of an adjustable outer diameter laparoscopic trocar.

[0028] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0029] Figure 7 for Figure 5 Enlarged structural diagram at point C;

[0030] Figure 8 A three-dimensional structural diagram showing the fit between the main body of the puncture device sleeve and the tracheal connection end block.

[0031] Figure label:

[0032] 1. Puncture device sleeve outer shell main body; 2. First piece; 3. Second piece; 4. Third piece; 5. Fourth piece; 6. Limiting groove; 7. Limiting block; 8. Fixing frame; 9. Lightweight groove; 10. Movable groove; 11. Slot body; 12. Limiting rod; 13. First limiting support rod; 14. Second limiting support rod; 15. End block; 16. Buffer chamber body; 17. First sealing plate; 18. Second sealing plate; 19. Third sealing plate; 20. Fourth sealing plate; 21. Sealing strip; 22. Sealing groove; 23. Zipper body; 24. Tracheal tube connection end block; 25. Ventilation tube body.

[0033] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0034] The adjustable outer diameter laparoscopic puncture device provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0035] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.

[0036] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0037] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0038] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0039] like Figures 1 to 8As shown, an embodiment of this utility model provides an adjustable outer diameter laparoscopic trocar, including a trocar sleeve shell body 1. A first piece 2 is fixedly connected to the inner wall of the trocar sleeve shell body 1. A second piece 3 is inserted into the first piece 2. A third piece 4 is inserted into the second piece 3. A fourth piece 5 is inserted into the third piece 4. Two limiting blocks 7 are provided oppositely on the inner walls of one side of the first piece 2, the second piece 3, and the third piece 4. Two opposing openings are provided on the outer walls of the side of the second piece 3, the third piece 4, and the fourth piece 5 away from the limiting blocks 7. The device includes a limiting groove 6, a tracheal connection end block 24 fixedly connected to one side of the puncture tube sleeve outer shell 1, and a ventilation tube body 25 fixedly connected to the bottom of the tracheal connection end block 24; a limiting mechanism for quickly fixing one end of the first piece 2, and the limiting mechanism is connected to the first piece 2; and a sealing assembly for quickly sealing the device, and the sealing assembly is connected to the puncture tube sleeve outer shell 1. The tracheal connection end block 24 and the ventilation tube body 25 are existing mature technologies, so their working principles and specific structures will not be described in detail here.

[0040] When not subjected to external force, the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are arc-shaped structures that are close to straight lines. Therefore, when the four pieces are used together to form a structure with a circular cross-section, the structure has an expansion tendency. Furthermore, by using multiple limiting grooves 6 and limiting blocks 7 in combination (since limiting grooves 6 and limiting blocks 7 are existing mature technologies, their working principle and specific structure will not be elaborated here), the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are tightly connected. They will not separate from each other under the influence of expansion force. Moreover, the deformation of the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 during the entire use is elastic deformation. The limiting block 7 has a buffer cavity inside. The limiting block 7 is made of silicone material. The shape of the limiting block 7 and the limiting groove 6 are compatible. By using the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5, which are set together in the form of overlapping sleeves, the inner diameter of the device can be quickly adjusted according to the specific usage conditions on site. When adjusting the inner diameter of the device, the limiting mechanism can stably limit the inner diameter within the required range, thus improving the stability of the device during use. This allows it to be better used with various surgical instruments of different diameters. Simultaneously, the use of the sealing component further enhances the stability of the device while ensuring its airtightness, providing the patient with a better operating field within the abdominal cavity and facilitating surgical operations. The specific structure and working principle of the limiting mechanism and sealing component are detailed below. This device has a simple structure, and the combination of its components ensures good practicality. Furthermore, the device has low production costs, is easy and quick to operate, protects the patient's health, and improves the surgical efficiency of medical personnel.

[0041] like Figures 1 to 8 As shown, the limiting mechanism includes a fixed frame 8 mounted on the first piece 2. Lightweight grooves 9 are equidistantly provided on the fixed frame 8. A movable groove 10 is provided on the side wall of the puncture tube sleeve outer shell body 1. Four slot bodies 11 are provided on the side wall of the puncture tube sleeve outer shell body 1. A limiting rod 12 is installed on the side of the puncture tube sleeve outer shell body 1 near the fixed frame 8. A first limiting support rod 13, matching the shape of the lightweight groove 9, is fixedly connected to the side of the limiting rod 12 near the fixed frame 8. A second limiting support rod 14, matching the shape of the slot body 11, is fixedly connected to the side of the limiting rod 12 near the puncture tube sleeve outer shell body 1. The movable groove 10 on the puncture tube sleeve outer shell body 1... The movable groove 10 is not through-hole, and the cross-section of the fixing frame 8 is U-shaped, which makes it easier for medical staff to adjust and operate. The outer edge of the fixing frame 8 is arc-shaped, and the arc shape has no obvious sharp corners, which makes it safer. One end of the first piece 2 is fixed to the inner wall of the puncture tube sleeve body 1, and the other end of the first piece 2 is fixedly connected to the fixing frame 8. The fixing frame 8 passes through the movable groove 10, and the movable groove 10 is used to limit the movement trajectory of the fixing frame 8. One end of the first piece 2 is fixedly connected to one end of the fourth piece 5. The user holds the fixing frame 8 with his hand, so that the fixing frame 8 rotates along the movable groove 10 and adjusts the depth of the fixing frame 8 inserted into the movable groove 10.

[0042] Through the above adjustments, the degree of unfolding of the first piece 2 and the position of the end of the first piece 2 near the fixing frame 8 can be changed. At the same time, the second piece 3, the third piece 4, and the fourth piece 5 inserted inside the first piece 2 will naturally unfold under the influence of their own expansion force, so that the inner diameter of the device can be quickly adjusted and unfolded to the required state. When the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 unfold to form a structure with the required inner diameter, the fixing frame 8 is aligned with the corresponding slot body 11, wherein the slot body 11 consists of four unequally spaced pieces arranged on the outer shell body 1 of the puncture device sleeve. After aligning the fixing frame 8 with the slot body 11, the first limiting support rod 13 is inserted into the lightweight slot 9, and the second limiting support rod 14 is inserted into the slot body 11 to limit the position and depth of the fixing frame 8, so that the first piece 2, the second piece 3, the third piece 4 and the fourth piece 5 will not continue to expand. The cooperation between the structures can quickly adjust the inner diameter and the corresponding outer diameter of the device in a short time. The cooperation between the structures effectively improves the application range of the device, and the structure is simple, which is convenient for medical staff to use and operate, and facilitates the promotion and use of the device.

[0043] The first limiting rod 13 and the second limiting rod 14 are perpendicular to each other, facilitating the quick insertion of the first limiting rod 13 and the second limiting rod 14 into the lightweight groove 9 and the slot body 11, respectively. The limiting rod 12, the first limiting rod 13, and the second limiting rod 14 are integrally formed, which improves the stability of the structure. The limiting rod 12 is made of plastic, which is a low-cost material. The second limiting rod 14 has an end block 15 on the side near the puncture device sleeve shell body 1. The end block 15 has a buffer cavity body 16 inside. The end block 15 is made of silicone. By using the end block 15, the second limiting rod 14 can be more stably inserted and fixed into the corresponding slot body 11, thereby improving the stability of the device during use. When the silicone material is used in conjunction with the buffer cavity body 16, the second limiting rod 14 is easier to insert into the slot body 11, which facilitates the adjustment of the inner diameter of the device. The structure is simple, and the cooperation between the structures further improves the performance of the device.

[0044] like Figures 1 to 8 As shown, the sealing assembly includes a first sealing plate 17 mounted on the main body 1 of the puncture device sleeve housing. A second sealing plate 18 is mounted on the outer wall of the first sealing plate 17, a third sealing plate 19 is mounted on the outer wall of the second sealing plate 18, and a fourth sealing plate 20 is mounted on the outer wall of the third sealing plate 19. By adjusting the device to the required position according to the specific usage conditions on site, the combined use of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 can further limit the outer wall of the structure formed by the first plate 2, the second plate 3, the third plate 4, and the fourth plate 5, thereby enhancing the first... The stability of plate 2, plate 3, plate 4, and plate 5 is also affected by the expansion force of plate 2, plate 3, plate 4, and plate 5 themselves. When the structure formed by the above four pieces and their corresponding inner diameter dimensions are used, they compress the inner walls of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, or the fourth sealing plate 20, thereby achieving a rapid sealing effect between the structures, ensuring good sealing performance within the device, thus maintaining a stable environment in the abdominal cavity, reducing interference with the abdominal organs, and the above structure is simple. The cooperation between the structures further improves the practicality of the device.

[0045] like Figures 1 to 8As shown, the inner wall shape of the first sealing piece 17 is adapted to the outer wall shape of the structure formed when the first piece 2, second piece 3, third piece 4, and fourth piece 5 are folded together to a diameter of 5 mm, thus enabling the first sealing piece 17 to be better used for sealing with a diameter of 5 mm. The inner wall shape of the second sealing piece 18 is adapted to the outer wall shape of the structure formed when the first piece 2, second piece 3, third piece 4, and fourth piece 5 are unfolded to a diameter of 10 mm, thus enabling the second sealing piece 18 to be better used for sealing with a diameter of 10 mm. The inner wall shape of the third sealing piece 19 is adapted to the outer wall shape of the structure formed when the first piece 2, second piece 3, third piece 4, and fourth piece 5 are folded together to a diameter of 10 mm. The outer wall shape of the structure formed when the first sheet 2, the second sheet 3, the third sheet 4 and the fourth sheet 5 are unfolded to a diameter of 12mm is adapted to the shape of the structure formed when they are unfolded to a diameter of 15mm, so that the fourth sealing sheet 20 is better used for sealing with a diameter of 15mm. The first sealing sheet 17, the second sealing sheet 18, the third sealing sheet 19 and the fourth sealing sheet 20 are all made of rubber, which can produce a certain elastic deformation when compressed, thereby ensuring that the device can have good sealing performance.

[0046] A sealing strip 21 is installed on the top of each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. Each of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 has a sealing groove 22 that matches the shape of the sealing strip 21. The cooperation between the sealing strip 21 and the sealing groove 22 ensures the sealing performance of the connection gaps between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. A zipper body 23 is installed between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. The use of the zipper body 23 further improves the stability of the connection between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20, thus ensuring that the entire device has good sealing performance and better stability. Furthermore, the structure is simple, and the cooperation between the structures further enhances the sealing effect.

[0047] The sealing strip 21 has a π-shaped cross-section. There are three sealing strips 21, each with a different inner diameter, which are used to seal the device under different size conditions, thus improving the adaptability between structures and improving the sealing performance of the device. Inserts are fixedly connected to one side of the outer wall of the first sealing plate 17, the second sealing plate 18, and the third sealing plate 19. The inner walls of the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 are all provided with slots that match the shape of the inserts. The cooperation between the inserts and slots further enhances the stability of the connection between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20, so that the cooperation between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 can form a tight integrated structure.

[0048] The workflow of the technical solution provided by this utility model is as follows:

[0049] The slot body 11 consists of four unequally spaced slots on the main body 1 of the puncture device sleeve shell. In use, in the initial state, the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are folded together, forming a sleeve structure with a cross-section of 5mm. At this time, the fixing frame 8 is close to the first slot body 11, the second limiting support rod 14 on the limiting rod 12 is inserted into the first slot body 11, and the first limiting support rod 13 is inserted into the corresponding lightweight groove 9, forming a quick fixing limit for the first piece 2. At the same time, the second piece 3, the third piece 4, and the fourth piece 5 are stably placed on the first piece 2. When the device is in use, the natural unfolding elastic force of the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 causes mutual compression between the structures, thereby making the structures fit tightly together.

[0050] The first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 are connected together through the cooperation of various structures within the sealing assembly. Each of the first sealing plate 17, the second sealing plate 18, and the third sealing plate 19 has a fixed insert on one side of its outer wall. The inner walls of the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 are each provided with a slot that matches the shape of the insert. The cooperation between the insert and the slot ensures that the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 are in a relatively stable connected state. Furthermore, the corresponding insert is inserted and fixed into the corresponding slot. After entering the groove, the zipper bodies 23 of the first sealing sheet 17, the second sealing sheet 18, the third sealing sheet 19, and the fourth sealing sheet 20 are pulled together in pairs to further enhance the stability of the connection between the first sealing sheet 17, the second sealing sheet 18, the third sealing sheet 19, and the fourth sealing sheet 20. Finally, the top of the connection between the first sealing sheet 17, the second sealing sheet 18, the third sealing sheet 19, and the fourth sealing sheet 20 is sealed using the sealing strip 21 and the sealing groove 22, which further enhances the stability of the connection between the first sealing sheet 17, the second sealing sheet 18, the third sealing sheet 19, and the fourth sealing sheet 20.

[0051] When other sizes are needed, the user first opens the connection between the first sealing plate 17 and the second sealing plate 18, then removes the first sealing plate 17, and then holds the fixing frame 8 with his hand, causing the fixing frame 8 to rotate along the movable groove 10. At the same time, the depth of the fixing frame 8 inserted into the movable groove 10 is adjusted. By adjusting, the degree of unfolding and the position of the first piece 2 are changed. While the fixing frame 8 rotates along the movable groove 10, the second piece 3, the third piece 4 and the fourth piece 5 inserted in the first piece 2 are naturally unfolded by their own expansion force. When the inner diameter of the structure formed by the unfolding of the second piece 3, the third piece 4 and the fourth piece 5 inserted in the first piece 2 is 10mm, the fixing frame 8 is close to the second slot body 11.

[0052] Repeat the above operation, insert the second limiting support rod 14 on the limiting rod 12 into the second slot body 11, and insert the first limiting support rod 13 into the corresponding lightweight groove 9, forming a quick fixed limit on the puncture device sleeve outer shell body 1. When the first piece 2, the second piece 3, the third piece 4 and the fourth piece 5 are used in the unfolded state of 10mm, they are affected by their own tension, and the inner wall of the first piece 2, the second piece 3, the third piece 4 and the fourth piece 5 and the second sealing plate 18 are squeezed, and the second sealing plate 18, the third sealing plate 19 and the fourth sealing plate 20 are tightly connected. Based on the above operations, when the fixing frame 8 is close to the third slot body 11, the second sealing plate 18 is removed, and the first plate 2, the second plate 3, the third plate 4, and the fourth plate 5 are unfolded to 12mm. Then, the fixing frame 8 is fixed and the inner wall of the third sealing plate 19 is pressed and adhered to the outer wall of the structure formed by the first plate 2, the second plate 3, the third plate 4, and the fourth plate 5. Similarly, when the fixing frame 8 is close to the fourth slot body 11, the second sealing plate 18 is removed, and the first plate 2, the second plate 3, the third plate 4, and the fourth plate 5 are unfolded to 15mm. Then, the fixing frame 8 is fixed and the inner wall of the fourth sealing plate 20 is pressed and adhered to the outer wall of the structure formed by the first plate 2, the second plate 3, the third plate 4, and the fourth plate 5. The cooperation between the structures allows the inner diameter of the device to be quickly adjusted and unfolded to the required state.

[0053] When the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are unfolded to form a structure with the required inner diameter, after the inner diameter and the corresponding outer diameter of the device are adjusted and fixed, the outer wall of the structure formed by the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 is further limited by the combined use of these sealing plates, enhancing the stability of the structure. Simultaneously, the structure is also constrained by the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5. Due to the influence of the expansion force of body 3, third body 4 and fourth body 5, when the structure formed by first body 2, second body 3, third body 4 and fourth body 5 is used with its corresponding inner diameter size, the inner wall of first sealing plate 17, second sealing plate 18, third sealing plate 19 or fourth sealing plate 20 is squeezed against the outer wall of the structure formed by first body 2, second body 3, third body 4 and fourth body 5, thereby achieving a rapid sealing effect between the structures, thus ensuring good sealing performance inside the device, and thus maintaining a stable environment inside the abdominal cavity.

[0054] The inner wall shape of the first sealing piece 17 is adapted to the outer wall shape of the structure formed when the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are folded together to a diameter of 5 mm, thereby enabling the first sealing piece 17 to be better used for sealing with a diameter of 5 mm; the inner wall shape of the second sealing piece 18 is adapted to the outer wall shape of the structure formed when the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are unfolded to a diameter of 10 mm, thereby enabling the second sealing piece 18 to be better used for sealing with a diameter of 10 mm; The inner wall shape of the three sealing pieces 19 is adapted to the outer wall shape of the structure formed when the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are unfolded to a diameter of 12 mm, thereby making the third sealing piece 19 better suited for sealing applications with a diameter of 12 mm; the inner wall shape of the fourth sealing piece 20 is adapted to the outer wall shape of the structure formed when the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5 are unfolded to a diameter of 15 mm, thereby making the fourth sealing piece 20 better suited for sealing applications with a diameter of 15 mm.

[0055] A sealing strip 21 is installed on the top of each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. Each of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20 has a sealing groove 22 on its top that matches the shape of the sealing strip 21. The cooperation between the sealing strip 21 and the sealing groove 22 ensures the sealing performance of the gaps between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. A zipper body 23 is installed between each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. The use of the zipper body 23 further improves the sealing performance of each pair of the first sealing plate 17, the second sealing plate 18, the third sealing plate 19, and the fourth sealing plate 20. The stability of the connections between the 20 components ensures good sealing and stability of the entire device, while also providing a simple structure. The coordinated use of the components further enhances the sealing effect. This device utilizes the overlapping use of the first piece 2, the second piece 3, the third piece 4, and the fourth piece 5, which are nested together in a stacked manner. This allows for rapid adjustment of the inner diameter of the device according to the specific usage conditions. Furthermore, the limiting mechanism can stably limit the inner diameter of the device within the required range, thus ensuring good stability during use. At the same time, the coordinated use of the sealing components further enhances the stability of the device while ensuring its sealing performance, thereby providing the patient with a better operating field within the abdominal cavity. This device has a simple structure and is convenient and quick to operate.

[0056] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the preferred embodiments; however, those skilled in the art can fully understand this utility model without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A laparoscopic trocar with adjustable outer diameter, characterized in that, The device includes a puncture device sleeve shell body. A first piece is fixedly connected to the inner wall of the puncture device sleeve shell body. A second piece is inserted into the first piece. A third piece is inserted into the second piece. A fourth piece is inserted into the third piece. Two limiting blocks are provided oppositely on the inner walls of one side of the first piece, the second piece, and the third piece. Two limiting grooves are provided oppositely on the outer walls of the side of the second piece, the third piece, and the fourth piece away from the limiting blocks. A tracheal tube connection end block is fixedly connected to one side of the puncture device sleeve shell body. A ventilation tube body is fixedly connected to the bottom of the tracheal tube connection end block. A limiting mechanism is provided for quickly fixing one end of the first piece, and the limiting mechanism is connected to the first piece. A sealing assembly for quickly sealing the device, the sealing assembly being connected to the main body of the puncture device sleeve.

2. The adjustable outer diameter laparoscopic trocar according to claim 1, characterized in that, The limiting mechanism includes a fixed frame mounted on the first piece, with lightweight grooves evenly spaced on the fixed frame. The top of the puncture device sleeve outer shell has a movable groove, and the top of the puncture device sleeve outer shell has four slot bodies. A limiting rod is installed on the side of the puncture device sleeve outer shell near the fixed frame. A first limiting support rod adapted to the shape of the lightweight groove is fixedly connected to the side of the limiting rod near the fixed frame. A second limiting support rod adapted to the shape of the slot body is fixedly connected to the side of the limiting rod near the puncture device sleeve outer shell.

3. The adjustable outer diameter laparoscopic trocar according to claim 2, characterized in that, The first limiting rod is perpendicular to the second limiting rod. The limiting rod, the first limiting rod, and the second limiting rod are integrally formed. The limiting rod is made of plastic.

4. The adjustable outer diameter laparoscopic trocar according to claim 2, characterized in that, The second limiting support rod has an end block on the side near the main body of the puncture device sleeve. The end block has a buffer cavity body inside and is made of silicone material.

5. The adjustable outer diameter laparoscopic trocar according to claim 1, characterized in that, The sealing assembly includes a first sealing plate mounted on the main body of the puncture device sleeve, a second sealing plate mounted on the outer wall of the first sealing plate, a third sealing plate mounted on the outer wall of the second sealing plate, and a fourth sealing plate mounted on the outer wall of the third sealing plate.

6. The adjustable outer diameter laparoscopic trocar according to claim 5, characterized in that, The inner wall shape of the first sealing sheet is adapted to the outer wall shape of the structure formed when the first, second, third, and fourth sheets are folded together to a diameter of 5 mm. The inner wall shape of the second sealing sheet is adapted to the outer wall shape of the structure formed when the first, second, third, and fourth sheets are unfolded to a diameter of 10 mm. The inner wall shape of the third sealing sheet is adapted to the outer wall shape of the structure formed when the first, second, third, and fourth sheets are unfolded to a diameter of 12 mm. The inner wall shape of the fourth sealing sheet is adapted to the outer wall shape of the structure formed when the first, second, third, and fourth sheets are unfolded to a diameter of 15 mm.

7. The adjustable outer diameter laparoscopic trocar according to claim 5, characterized in that, The first, second, third, and fourth sealing sheets are all made of rubber. A sealing strip is installed on the top of each pair of the first, second, third, and fourth sealing sheets. A sealing groove adapted to the shape of the sealing strip is opened on the top of each of the first, second, third, and fourth sealing sheets. A zipper body is installed between each pair of the first, second, third, and fourth sealing sheets.

8. The adjustable outer diameter laparoscopic trocar according to claim 7, characterized in that, The sealing strip has a π-shaped cross-section, and there are three sealing strips with different inner diameters, which correspond to the sealing use of the device under different size conditions.

9. The adjustable outer diameter laparoscopic trocar according to claim 5, characterized in that, Each of the first, second, and third sealing plates has a fixed insert connected to one side of its outer wall, and each of the second, third, and fourth sealing plates has a slot on its inner wall that matches the shape of the insert.

10. The adjustable outer diameter laparoscopic trocar according to claim 2, characterized in that, The movable groove on the main body of the puncture device sleeve is not through, the cross-section of the fixing frame is U-shaped, and the outer edge of the fixing frame is arc-shaped.

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