Constant pressure tube applied to laparoscopic natural orifice transluminal surgery

Abstract

This invention belongs to the field of laparoscopic surgical instruments technology and provides a constant pressure tube for laparoscopic surgery through natural orifice. The constant pressure tube for laparoscopic surgery through natural orifice includes: a main tube that extends through the natural orifice and abdominal cavity; and pressure diaphragms, which are provided in multiple locations and evenly distributed within the main tube; each pressure diaphragm includes pressure diaphragm dividers; these dividers are made of flexible material and are provided in multiple locations; the pressure diaphragms are evenly distributed along the central axis of the main tube and abut against each other on the left and right sides, with the sides of the pressure diaphragms being inclined. In summary, this constant pressure tube for laparoscopic surgery through natural orifice is not only rationally designed and simple to operate, but also effectively avoids the accumulation of different pressure differences, reducing their impact; thus, it facilitates the operation of surgical instruments and is suitable for industry promotion.

Description

Technical Field

[0001] This invention relates to the field of laparoscopic surgical instruments, specifically to a constant pressure tube used in laparoscopic surgery through natural orifices. Background Technology

[0002] Laparoscopic surgery via natural orifices is a minimally invasive surgical procedure that utilizes naturally occurring channels in the human body that connect to the outside, such as the stomach, vagina, urethra, colon, rectum, and esophagus. Surgical instruments are inserted and then inserted through artificial puncture channels into the abdominal cavity, thoracic cavity, and retroperitoneal cavity to perform surgery on organs in these cavities.

[0003] However, because it needs to pass through two different cavities in the human body, and because the human body is structurally different, the pressure at the point of penetration tends to accumulate from the high-pressure area to the low-pressure area. This causes the tube to change due to the different pressures during the operation, ultimately making the surgical instruments inflexible.

[0004] Therefore, there is a need for a method that can prevent pressure buildup and allow for flexible use of surgical instruments. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a constant pressure tube for laparoscopic surgery through natural orifice surgery to reduce pressure changes that could prevent the flexible use of surgical instruments.

[0006] This invention provides a constant pressure tube for laparoscopic surgery through natural orifice, comprising: a main tube that can penetrate the natural orifice and the abdominal cavity; and pressure diaphragms, wherein multiple pressure diaphragms are provided and evenly distributed in the main tube; each pressure diaphragm is provided with pressure diaphragm dividers; the pressure diaphragms are made of flexible material and are provided in multiple locations; the pressure diaphragms are evenly distributed along the central axis of the main tube and abut against each other on the left and right sides, and the sides of the pressure diaphragms are inclined.

[0007] Furthermore, the main tube comprises a tube body layer, a flexible layer, and an outer closing sleeve layer; the flexible layer is provided in multiple locations and is disposed on the inner wall of the tube body layer, situated between the pressure isolation chambers; the outer closing sleeve layer is disposed on the outer surface of the tube body layer. In practical applications, both the flexible layer and the outer closing sleeve layer are designed to physically isolate internal and external pressures. By placing the flexible layer and the outer closing sleeve layer inside and outside the tube body layer, a pressure difference between the inside and outside is avoided. The aforementioned tube body layer uses the same medical material as that used in laparoscopic surgery, thus saving testing time and preventing rejection reactions.

[0008] Furthermore, the outer closure layer includes a pressure-resistant fluid and an outer sleeve; the outer sleeve is disposed on the tube body layer and located on the outer surface of the tube body layer; the pressure-resistant fluid is sealed and filled into the outer sleeve; and the outer sleeve is made of a medical-grade flexible material; wherein the medical-grade flexible material is medical-grade silicone and has a thickness of approximately 0.01 mm; the pressure-resistant fluid used is water, similar to bodily fluids; the purpose of this design is that when the pressure-resistant fluid in the outer sleeve encounters the junction of the internal and external pressure differences, the pressure pushes the fluid towards the junction of the internal and external pressure differences, thus pushing the outer sleeve towards the junction of the internal and external pressure differences as well; this achieves pressure isolation between the laparoscope and natural cavities, preventing external pressure from entering the surgical area. Simultaneously, the pressure-resistant fluid can further counteract pressure, reducing the impact of pressure on the tube body within the main tube.

[0009] Furthermore, it also includes an outer protective tube, which is disposed outside the main tube; and the main tube is installed inside the outer protective tube. In practical application, the outer protective tube serves a protective function during transport; in actual surgery, the outer protective tube containing the main tube is first inserted through the laparoscope and natural cavity, and then slowly removed, leaving the main tube inside the laparoscope and natural cavity; this avoids damage to the surface of the main tube caused by direct use; at the same time, this transport-type medical method also reduces the resistance of the main tube during the insertion process.

[0010] Furthermore, the flexible layer includes a flexible sealing bag and a sealing liquid. The flexible sealing bag is disposed on the inner wall of the tube body layer, and the sealing liquid is sealed and contained within the flexible sealing bag. In practical applications, the flexible sealing bag uses the same material as the outer shell material, only with a significantly different shape, and the sealing liquid used is mostly water. This reduces the material selection in the actual design and shortens the material verification time.

[0011] Furthermore, at least two flexible sealing bags are disposed within the pressure-isolating chamber, arranged vertically opposite each other, and the diameter of each flexible sealing bag is larger than the inner radius of the main pipe. In practical applications, this design is used to achieve pressure isolation.

[0012] Furthermore, it also includes a pipe bending guide mechanism, which is installed on the outer protective tube and located outside the main tube. The pipe bending guide mechanism includes a sleeve and rotating rollers, with multiple rotating rollers respectively disposed on the inner and outer surfaces of the sleeve. In practical applications, this design ensures that the pipe bending guide mechanism can still provide guidance when encountering bends, thus reducing internal resistance when the outer protective tube retracts.

[0013] Furthermore, the outer sheath also includes particulate matter. In practical applications, this particulate matter is made of crystalline salt particles. When mixed with a pressure-resistant fluid, this material accumulates at the junction of the internal and external pressure differences under the impetus of the pressure-resistant fluid, further isolating the internal and external pressure differences.

[0014] As can be seen from the above technical solution, the beneficial effects of the constant pressure tube provided by the present invention for use in laparoscopic natural orifice surgery are as follows:

[0015] (1) In practical application, by passing the main tube through the abdominal cavity and natural orifices, the micro-instrument is then inserted into the required position through the main tube; in this way, laparoscopic surgery through natural orifices is realized.

[0016] (2) At the same time, multiple pressure isolation chambers are set in the main tube to isolate the pressure and prevent the abdominal pressure from communicating with the pressure of the natural cavity; at the same time, the multiple pressure isolation chambers can also support the main tube and reduce the deformation of the main tube caused by pressure.

[0017] (3) Furthermore, the pressure-isolating chamber is equipped with multiple pressure-isolating plates that abut against each other, and utilizes the properties of its own flexible material to continuously offset the pressure difference between the abdominal cavity and the natural cavity. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 A partial front view of a constant pressure tube used in laparoscopic natural orifice surgery provided by the present invention;

[0020] Figure 2 This is a schematic diagram illustrating the operation of a constant pressure tube used in laparoscopic surgery through natural orifices at the point where it passes through the laparoscope and the natural orifice.

[0021] Figure 3 This is a schematic diagram illustrating the operation of the surgical instruments shown in this invention.

[0022] Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the main pressure-reducing plate in this invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the pressure-reducing plate in this invention.

[0025] Figure label:

[0026] Main pipe 1, pipe body layer 11, flexible layer 12, flexible sealing bag 121, sealing liquid 122, outer sealing sleeve layer 13, pressure-resistant fluid 131, outer sleeve 132, particulate matter 133, pressure isolation chamber 2, pressure isolation dividing plate 21, outer protective pipe 3, bend guide mechanism 4, sleeve body 41, rotating roller 42. Detailed Implementation

[0027] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0028] The basic implementation examples are as follows: Figures 1 to 6 As shown:

[0029] like Figures 1-6 As shown in this embodiment, a constant pressure tube for laparoscopic natural orifice surgery can reduce pressure changes that could prevent the flexible use of surgical instruments.

[0030] A constant pressure tube for laparoscopic surgery through natural orifice surgery includes: a main tube 1, which can pass through the natural orifice and the abdominal cavity; and pressure diaphragm chambers 2, which are provided in multiple locations and evenly distributed in the main tube 1; the pressure diaphragm chambers 2 are provided with pressure diaphragm dividers 21; the pressure diaphragm dividers 21 are made of flexible material and are provided in multiple locations; the pressure diaphragm dividers 21 are evenly distributed along the central axis of the main tube 1 and abut against each other on the left and right sides, and the sides of the pressure diaphragm dividers 21 are inclined. In practical applications, by passing the main tube 1 through the abdominal cavity and natural cavities, the micro-instruments are then inserted into the desired positions via the main tube 1. This enables laparoscopic surgery through the natural cavity. At the same time, multiple pressure-isolating chambers 2 are set in the main tube 1 to isolate pressure and prevent the pressure in the abdominal cavity from communicating with the pressure in the natural cavity. Furthermore, the multiple pressure-isolating plates 21 set in the pressure-isolating chamber 2 abut against each other and utilize the properties of its flexible material to continuously offset the pressure difference between the abdominal cavity and the natural cavity. At the same time, the multiple pressure-isolating chambers 2 can also support the main tube 1 and reduce the deformation of the main tube 1 caused by pressure.

[0031] To avoid pressure buildup, in this embodiment, the main tube 1 is provided with a tube body layer 11, a flexible layer 12, and an outer closing layer 13. Multiple flexible layers 12 are provided on the inner wall of the tube body layer 11 and located between the pressure isolation chambers 2. The outer closing layer 13 is disposed on the outer surface of the tube body layer 11. In practical applications, both the flexible layer 12 and the outer closing layer 13 are used to physically isolate internal and external pressure. By placing the flexible layer 12 and the outer closing layer 13 inside and outside the tube body layer 11, a pressure difference between the inside and outside is avoided. The tube body layer 11 is made of the same medical material used in laparoscopic surgery, thus saving testing time and preventing rejection reactions.

[0032] To achieve a tight seal and prevent pressure leakage, in this embodiment, the outer closure layer 13 includes a pressure-resistant fluid 131 and an outer sleeve 132. The outer sleeve 132 is disposed on the tube body layer 11 and located on the outer surface of the tube body layer 11. The pressure-resistant fluid 131 is sealed and filled into the outer sleeve 132. The outer sleeve 132 is made of a medical-grade flexible material, specifically medical-grade silicone, with a thickness of approximately 0.01 mm. The pressure-resistant fluid 131 is water, similar to bodily fluids. The purpose of this design is that when the pressure-resistant fluid 131 in the outer sleeve 132 encounters a pressure difference, the pressure forces the fluid towards the pressure difference. Consequently, the outer sleeve 132 also moves towards the pressure difference under the pressure of the pressure-resistant fluid 131. This achieves pressure isolation between the laparoscope and the natural cavity, preventing external pressure from entering the surgical area. Furthermore, the outer closure layer 13 also includes particulate matter 133. In practical applications, the particulate matter 133 is made of salt-like crystals. When mixed with the pressure-resistant fluid 131, this material accumulates at the junction of internal and external pressure differences under the impetus of the pressure-resistant fluid 131, further isolating the internal and external pressure differences.

[0033] In this embodiment, an outer protective tube 3 is also included, which is disposed outside the main tube 1; and the main tube 1 is installed inside the outer protective tube 3. In practical application, the outer protective tube 3 plays a protective role during the transportation process; in actual surgery, the outer protective tube 3 containing the main tube 1 first penetrates the laparoscope and natural cavity, and then is slowly removed, leaving the main tube 1 inside the laparoscope and natural cavity; this avoids damage to the surface of the main tube 1 caused by direct use; at the same time, this transportation medical method also reduces the resistance of the main tube 1 during the penetration process.

[0034] In this embodiment, the flexible layer 12 includes a flexible sealing bag 121 and a sealing liquid 122. The flexible sealing bag 121 is disposed on the inner wall of the tube layer 11, and the sealing liquid 122 is sealed and contained within the flexible sealing bag 121. In practical applications, the flexible sealing bag 121 is made of the same material as the outer jacket 132, except for a significant difference in shape, and the sealing liquid 122 is also mostly composed of water. This reduces the material selection in the actual design and shortens the material verification time.

[0035] In this embodiment, the flexible sealing bags 121 are disposed in at least two locations within the pressure-isolating chamber 2, arranged vertically opposite each other, and the diameter of the flexible sealing bags 121 is larger than the inner tube radius of the main pipe 1. In practical applications, this design is used to achieve pressure isolation.

[0036] In this embodiment, a bending guide mechanism 4 is also included. The bending guide mechanism 4 is mounted on the outer protective tube 3 and is located outside the main tube 1. The bending guide mechanism 4 includes a sleeve 41 and rotating rollers 42. The rotating rollers 42 are provided in multiple locations and are respectively disposed on the inner and outer surfaces of the sleeve 41. In practical applications, this design ensures that the bending guide mechanism 4 can still provide guidance when encountering bending, thus reducing internal resistance when the outer protective tube 3 retracts.

[0037] In practice, the outer protective tube 3 containing the main tube 1 is first inserted through the natural cavity of the laparoscope; then the outer protective tube 3 is slowly pulled back outward while keeping the main tube 1 still; then the surgical instruments are slowly inserted through the main tube 1 into the laparoscopic surgical area; of course, if conditions permit or the medical skill level is high, the surgical instruments can be placed in the main tube 1 first; this avoids repeated operations.

[0038] In summary, this constant pressure tube for laparoscopic natural orifice surgery is not only rationally designed and easy to operate, but also effectively avoids the accumulation of different pressure differences and reduces their impact; thus, it facilitates the operation of surgical instruments and is suitable for industry promotion.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A constant pressure tube for use in laparoscopic natural orifice surgery, characterized in that, include: The tube, which can penetrate natural cavities and the abdominal cavity; and The pressure-isolating chamber has multiple locations, evenly distributed within the main pipe; each pressure-isolating chamber has pressure-isolating dividers; these dividers are made of flexible material and have multiple locations; the pressure-isolating dividers are evenly distributed along the central axis of the main pipe and abut against each other on the left and right sides. The sides of the pressure-isolating plate are inclined. The main tube has a tube body layer, a flexible layer and an outer closed sleeve layer; the flexible layer has multiple locations and is disposed on the inner wall of the tube body layer and located between the pressure isolation chambers; the outer closed sleeve layer is disposed on the outer surface of the tube body layer; The outer sheath includes a pressure-resistant fluid and an outer jacket; the outer jacket is disposed on the tube body layer and located on the outer surface of the tube body layer; the pressure-resistant fluid is sealed and filled into the outer jacket; and the outer jacket is made of a medical flexible material. The flexible layer includes a flexible sealing bag and a sealing liquid. The flexible sealing bag is disposed on the inner wall of the tube layer, and the sealing liquid is sealed and filled into the flexible sealing bag.

2. The constant pressure tube for laparoscopic natural orifice surgery according to claim 1, characterized in that, It also includes an outer protective tube, which is disposed outside the main tube; and the main tube is installed inside the outer protective tube.

3. The constant pressure tube for laparoscopic natural orifice surgery according to claim 1, characterized in that, The flexible sealing bags are installed in at least two locations within the pressure-isolating chamber, arranged vertically opposite each other, and the diameter of the flexible sealing bags is greater than the inner tube radius of the main tube.

4. The constant pressure tube for laparoscopic natural orifice surgery according to claim 2 further includes a bending tube guide mechanism, wherein the bending tube guide mechanism is fitted with the outer protective tube and is located outside the main tube; the bending tube guide mechanism includes a sleeve and rotating rollers, wherein the rotating rollers are provided in multiple locations and are respectively disposed on the inner and outer surfaces of the sleeve.

5. The constant pressure tube for laparoscopic natural orifice surgery according to claim 1, wherein the outer closure layer further comprises particulate matter.

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