Endoscope cleaning sheath

Abstract

This invention relates to the field of medical device technology and provides a laparoscopic cleaning sheath, comprising: a tube body with a laparoscopic channel, a liquid channel, and a gas channel within the tube body; and a sheath end cap disposed at the distal end of the tube body, the end cap having a liquid nozzle and a gas nozzle; the liquid nozzle is connected to the liquid channel for spraying liquid toward the laparoscopic endoscope located within the tube body, and the gas nozzle is connected to the gas channel for spraying air toward the laparoscopic endoscope located within the tube body. In use, the laparoscopic cleaning sheath provided by this invention allows the liquid nozzle to spray liquid toward the laparoscopic endoscope located within the tube body to clean the lens; the gas nozzle can spray air toward the laparoscopic endoscope located within the tube body to dry the lens. This effectively solves the problem of surgical delays or increased infection risks caused by the need to remove the endoscope for cleaning when its field of vision is obstructed by blood, tissue fluid, tissue debris, mist, etc.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a laparoscope cleaning sheath. Background Technology

[0002] During laparoscopic surgery, the complex surgical environment often leads to contamination of the endoscope's surface by moisture, blood, tissue fluid, grease, and tissue debris, obstructing the endoscopic view. Surgeons must remove the endoscope from the body, clean it, and then reinsert it. This process interrupts the procedure, requires reinsertion, and re-establishing a suitable viewing angle, wasting surgical time and increasing the risk of delayed treatment for the patient. Furthermore, removing the endoscope increases the risk of contact with external stimuli, adding to the overall risk of infection. Summary of the Invention

[0003] Therefore, the present invention aims to solve the problem in the prior art that when a laparoscope becomes contaminated during laparoscopic surgery, it is necessary to remove the laparoscope for cleaning, which can easily lead to surgical delays and increase the risk of additional infection. The present invention provides a laparoscope cleaning sheath.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: This invention provides a laparoscopic cleaning sheath, comprising: a tube body, wherein a laparoscopic channel, a liquid channel, and a gas channel are disposed within the tube body; a sheath end cap, disposed at the distal end of the tube body, wherein a liquid nozzle and a gas nozzle are disposed on the sheath end cap; the liquid nozzle is connected to the liquid channel and is used to spray liquid toward the laparoscopic end located within the tube body; the gas nozzle is connected to the gas channel and is used to spray air toward the laparoscopic end located within the tube body.

[0005] Furthermore, the sheath end cap includes an end cap body and a nozzle seat; the nozzle seat is disposed at the distal end of the end cap body, the nozzle seat has a V-shaped curved surface, and both the liquid nozzle and the gas nozzle are located on the V-shaped curved surface; the open opening at the distal end of the end cap body that is not obstructed by the nozzle seat forms a viewing window.

[0006] Furthermore, a plurality of gas nozzles are provided on the V-shaped curved surface; the liquid nozzle is located at the bottom of the valley of the V-shaped curved surface, and the plurality of gas nozzles are symmetrically and evenly distributed on both sides of the liquid nozzle.

[0007] Furthermore, the inner wall of the end cap body is provided with a number of gas guide grooves equal to the number of gas nozzles, the outlet of the gas guide groove serves as the gas nozzle, and the inlet of the gas guide groove is connected to the gas channel.

[0008] Furthermore, a first flow channel is built into the side wall of the end cap body, the outlet of the first flow channel extends to the V-shaped curved surface and is connected to the liquid nozzle, a liquid nozzle is provided at the liquid nozzle, a liquid interface is provided at the inlet of the first flow channel, and the liquid interface is connected to the outlet of the liquid channel.

[0009] Furthermore, the distal surface of the end cap body is an inclined surface or a plane.

[0010] Furthermore, the gas channel is an independent gas channel formed within the side wall of the tube body; and / or, the inner diameter of the endoscope channel is larger than the outer diameter of the endoscope, and when the endoscope is located within the endoscope channel, the gap between the inner side wall of the endoscope channel and the outer side wall of the endoscope forms the gas channel.

[0011] Furthermore, the laparoscopic cleaning sheath also includes a sheath seat located at the proximal end of the tube body; the sheath seat is provided with a first interface and a second interface, the first interface being used to connect to an external liquid source and the second interface being used to connect to an external gas source; a second flow channel is built into the side wall of the sheath seat, the outlet of the second flow channel being connected to the inlet of the liquid channel, and the inlet of the second flow channel being connected to the first interface; the inlet of the gas channel and the second interface are both connected to the internal space of the sheath seat.

[0012] Furthermore, the laparoscopic cleaning sheath also includes a sheath cap and a seal; the sheath cap is disposed at the proximal end of the sheath seat; the seal is disposed between the sheath cap and the sheath seat, and the seal has at least two spaced-apart sealing rings along the axial direction of the seal; the inner diameter of the sealing rings gradually decreases along the direction away from the sheath seat, and the linear diameter of the sealing rings gradually decreases along the direction away from the sheath seat.

[0013] Furthermore, the endoscope cleaning sheath also includes a liquid line, a gas line, and a switching valve; one end of the liquid line is connected to the first interface, and the other end is adapted to be connected to a liquid source; one end of the gas line is connected to the second interface, and the other end is adapted to be connected to a gas source; the switching valve is provided on both the liquid line and the gas line.

[0014] The technical solution of this invention has the following advantages: The laparoscopic cleaning sheath provided by this invention includes a connected tube body and a sheath end cap. The tube body is provided with a laparoscopic channel, a liquid channel, and a gas channel. The sheath end cap is provided with a liquid nozzle and a gas nozzle. In use, the liquid nozzle can spray liquid toward the laparoscopic endoscope located in the tube body to clean the lens of the endoscope. The gas nozzle can spray air toward the laparoscopic endoscope located in the tube body to dry the lens of the endoscope. This effectively solves the problem of surgical delay or increased risk of infection caused by the need to remove the endoscope from the body for cleaning when the laparoscopic field of view is obstructed by blood, tissue fluid, tissue debris, fog, etc. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the endoscope cleaning sheath in an embodiment of the present invention; Figure 2 This is a schematic diagram of the tube body in the laparoscopic cleaning sheath in an embodiment of the present invention; Figure 3 This is a schematic diagram of the end cap of the endoscopic cleaning sheath in an embodiment of the present invention from one perspective; Figure 4 This is a schematic diagram of the end cap of the endoscopic cleaning sheath in an embodiment of the present invention from another perspective. Figure 5 This is a schematic diagram of the sheath seat in the laparoscopic cleaning sheath in an embodiment of the present invention from one perspective; Figure 6 This is a schematic diagram of the sheath seat in the laparoscopic cleaning sheath in an embodiment of the present invention from another perspective. Figure 7 This is a schematic diagram of the sheath cap in the laparoscopic cleaning sheath in an embodiment of the present invention; Figure 8 This is a schematic diagram of the sealing element in the laparoscopic cleaning sheath in an embodiment of the present invention; Figure 9 This is a cross-sectional view of the seal in the laparoscopic cleaning sheath in an embodiment of the present invention; Figure 10 This is a schematic diagram showing the connection relationship between the sheath seat, liquid line, and gas line in the laparoscopic cleaning sheath in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Tube body; 101. Endoscope channel; 102. Liquid channel; 103. Gas channel; 2. Sheath end cap; 201. Nozzle seat; 2011. V-shaped curved surface; 2012. Liquid nozzle; 2013. Gas nozzle; 202. End cap body; 203. Air guide groove; 204. Inclined surface; 205. First flow channel; 3. Sheath base; 301. Second flow channel; 302. Large channel; 303. Small channel; 304. First interface; 305. Second interface; 4. Sheath cap; 5. Sealing components; 501. Sealing ring; 6. Liquid piping; 7. Gas pipelines; 8. Switch valve. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and defined, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1 to 10As shown, this embodiment provides a laparoscopic cleaning sheath, comprising: a tube body 1, which can be a multi-lumen tube, wherein a laparoscopic channel 101, a liquid channel 102, and a gas channel 103 are provided inside the tube body 1. For example, the tube body 1 can be formed by extrusion of a polymer material, including but not limited to nylon, PEEK, PP, PE, and Pebax-like materials; in use, a laparoscopic endoscope can be inserted into the cavity channel. A sheath end cap 2 is disposed at the distal end of the tube body 1, and the sheath end cap 2 is provided with a liquid nozzle 2012 and a gas nozzle 2013; the liquid nozzle 2012 is connected to the liquid channel 102 and is used to spray liquid toward the laparoscopic endoscope located inside the tube body 1; the gas nozzle 2013 is connected to the gas channel 103 and is used to spray gas toward the laparoscopic endoscope located inside the tube body 1.

[0023] The endoscope cleaning sheath provided in this embodiment includes a connected tube body 1 and a sheath end cap 2. The tube body 1 is provided with an endoscope channel 101, a liquid channel 102, and a gas channel 103. The sheath end cap 2 is provided with a liquid nozzle 2012 and a gas nozzle 2013. In use, the liquid nozzle 2012 can spray liquid toward the endoscope located in the tube body 1 to clean the endoscope lens. The gas nozzle 2013 can spray air toward the endoscope located in the tube body 1 to dry the endoscope lens. This effectively solves the problem of surgical delay or increased risk of infection caused by the need to remove the endoscope from the body for cleaning when the endoscope's field of vision is obstructed by blood, tissue fluid, tissue debris, mist, etc.

[0024] like Figure 3 , Figure 4 As shown, the sheath end cap 2 includes an end cap body 202 and a nozzle seat 201. The nozzle seat 201 is located at the distal end of the end cap body 202. For example, the nozzle seat 201 can be located at the top of the end cap body 202. The nozzle seat 201 has a V-shaped curved surface 2011, and both the liquid nozzle 2012 and the gas nozzle 2013 are located on the V-shaped curved surface 2011. The open end of the end cap body 202, which is not obstructed by the nozzle seat 201, forms a viewing window, ensuring that the field of view is not obstructed when the endoscope is located inside the tube body 1. When the liquid nozzle 2012 ejects liquid, it can be directionally sprayed from the top to the bottom of the endoscope's field of view. Similarly, when the gas nozzle 2013 ejects gas, it can also be directionally blown from the top to the bottom of the endoscope's field of view. Whether it is liquid or gas, it moves from one direction to another. This consistency in direction is beneficial for improving the cleaning effect on debris on the endoscope lens.

[0025] The V-shaped curved surface 2011 is provided with a plurality of gas nozzles 2013; the liquid nozzle 2012 is located at the bottom of the V-shaped curved surface 2011, and the plurality of gas nozzles 2013 are symmetrically and evenly distributed on both sides of the liquid nozzle 2012. This arrangement allows the multiple gas nozzles 2013 to form a gas barrier on the lens surface, preventing small splashes from contaminating the lens.

[0026] The inner wall of the end cap body 202 is provided with an equal number of air guide grooves 203 as the gas nozzles 2013. The outlet of each air guide groove 203 serves as the gas nozzle 2013. For example, the cross-sectional shape of the gas channel 103 inside the pipe body 1 can be designed as an arc, so that the inlet of each air guide groove 203 is connected to the gas channel 103, facilitating the reception of the gas transported by the gas channel 103. For example, the side of the air guide groove 203 on the end cap body 202 facing the center of the end cap body 202 can be open. When the pipe body 1 and the end cap body 202 are assembled, the outer wall and end face of the pipe body 1 are in contact with the inner wall and inner side of the end face of the end cap body 202. At this time, the open end of the air guide groove 203 can be sealed, and the airflow can only move along the axial direction of the air guide groove 203. This configuration, through the air guide groove 203, provides a continuous and slow blowing gas to the gas nozzle 2013, which can accelerate the evaporation of fine water droplets adhering to the lens surface and prevent the field of view from being obstructed by these droplets. In addition, the blown gas can also blow away residual moisture on the lens surface, helping to keep the lens surface dry.

[0027] The end cap body 202 has a first flow channel 205 built into its side wall. The outlet of the first flow channel 205 extends to the V-shaped curved surface 2011 and communicates with the liquid nozzle 2012. A liquid nozzle is provided at the liquid nozzle 2012, and a liquid interface is provided at the inlet of the first flow channel 205, which communicates with the outlet of the liquid channel 102. For example, the first flow channel 205 can be embedded in the side wall of the end cap body 202 to form an independent cavity, preventing interference with the gas path. For example, the liquid nozzle can have multiple diverging micropores, and the sprayed liquid forms a liquid film on the lens surface of the endoscope, covering the entire lens, which can improve the cleaning effect.

[0028] The distal surface of the end cap body 202 is either an inclined surface 204 or a flat surface. For example, the distal surface of the end cap body 202 can be inclined downwards from its top to its bottom, so that the bottom of the distal surface of the end cap body 202 is recessed relative to the top. With this configuration, when liquid is sprayed, the liquid can flow quickly along the inclined surface 204, reducing liquid residue and accumulation on the lens surface, improving the drainage effect, and facilitating the lens to quickly return to a working state after cleaning.

[0029] like Figure 2 As shown, for example, the gas channel 103 can be an independent gas channel 103 formed within the side wall of the tube body 1. For example, the inner diameter of the endoscope channel 101 is larger than the outer diameter of the endoscope. When the endoscope is located within the endoscope channel 101, the gap between the inner side wall of the endoscope channel 101 and the outer side wall of the endoscope forms the gas channel 103. This arrangement can minimize the wall thickness of the tube body 1 and increase the lumen size.

[0030] like Figure 5 , Figure 6 As shown, the laparoscopic cleaning sheath also includes a sheath seat 3, which is disposed at the proximal end of the tube body 1. The sheath seat 3 is provided with a first interface 304 and a second interface 305. The first interface 304 is used to connect to an external liquid source, and the second interface 305 is used to connect to an external gas source. A second flow channel 301 is built into the side wall of the sheath seat 3. The outlet of the second flow channel 301 is connected to the inlet of the liquid channel 102, and the inlet of the second flow channel 301 is connected to the first interface 304. For example, the outlet of the second flow channel 301 can extend to the distal end face of the sheath seat 3, and the inlet of the liquid channel 102 can extend to the proximal end face of the tube body 1. The sheath seat 3 and the tube body 1 can be sealed together by interference fit or glue. The inlet of the gas channel 103 and the second interface 305 are both connected to the internal space of the sheath seat 3. For example, the large channel 302 in the hollow area inside the sheath 3 can be used to insert a laparoscope, and a small channel 303 for gas passage can be separated at the edge of the hollow area. After the sheath 3 is connected to the tube 1, the small channel 303 can be kept in communication with the inlet and the second interface 305 of the gas channel 103.

[0031] like Figure 7 , Figure 8 as well as Figure 9As shown, the endoscope cleaning sheath also includes a sheath cap 4 and a sealing element 5. The sheath cap 4 is located at the proximal end of the sheath seat 3. The sealing element 5 is located between the sheath cap 4 and the sheath seat 3, and has at least two spaced-apart sealing rings 501 along the axial direction of the sealing element 5. For example, two to five sealing rings 501 can be spaced apart. When the endoscope is inserted, the sealing rings 501 form a seal with the endoscope, and a sealed cavity with an interface is formed inside the sheath seat 3. The inner diameter of the sealing rings 501 gradually decreases along the direction away from the sheath seat 3, and at the same time, the linear diameter of the sealing rings 501 also gradually decreases along the direction away from the sheath seat 3. This configuration allows for multiple seals, resulting in a better seal and preventing air leakage. Furthermore, the compression amounts of the multiple seals differ. For example, the sealing ring 501 furthest from the sheath seat 3 has the smallest inner diameter and the largest interference fit during sealing. However, because its wire diameter is also the smallest, the sealing surface is also the smallest. Overall, this ensures a tight seal without increasing resistance to endoscope insertion or removal. Similarly, the sealing ring 501 closest to the sheath seat 3 has the largest inner diameter and the smallest interference fit during sealing. However, because its wire diameter is also the smallest and largest, the sealing surface is also the largest. Overall, this also ensures a tight seal without increasing resistance to endoscope insertion or removal. Ultimately, this allows the entire sealing element 5 to maintain its performance while controlling the force required to insert or remove the endoscope from the sheath within an ideal range.

[0032] like Figure 10 As shown, the endoscopic cleaning sheath further includes a liquid line 6, a gas line 7, and a switching valve 8. One end of the liquid line 6 is connected to the first interface 304, and the other end is adapted to be connected to a liquid source. One end of the gas line 7 is connected to the second interface 305, and the other end is adapted to be connected to a gas source. The switching valve 8 is installed on both the liquid line 6 and the gas line 7. For example, the liquid source can be a syringe, a manual liquid pressurization delivery device, or an automatic high-pressure liquid pump. The liquid can be physiological saline, iodine, or other biocompatible cleaning agents. For example, the gas source can be an insufflator or other gas compressor. The gas is generally carbon dioxide, but other medical inert gases are also possible.

[0033] When using the laparoscopic cleaning sheath of this application, first insert the endoscope into the laparoscopic cleaning sheath, then connect the liquid line 6 to the liquid source, and then connect the gas line 7 to the insufflator or other gas pressure machine. Open the switch valve 8 on the liquid line 6 and the gas line 7 for external testing. After confirming that the laparoscopic cleaning sheath can work normally, insert it into the patient's abdominal cavity for surgery. Then, depending on the actual situation of the surgery, choose to spray liquid or air to clean the endoscope. After the surgery, remove it from the body and take off the endoscope.

[0034] In summary, the laparoscopic cleaning sheath of this application allows the laparoscopic surface to be protected by the sheath end cap 2 and the tube body 1, reducing damage caused by contact or impact; an airflow barrier can be formed in front of the laparoscopic lens, reducing the probability of suspended or splashed fine debris adhering to the laparoscopic surface and obstructing the field of vision; when the laparoscopic lens is dirty, the laparoscopic can be cleaned and dried at the original surgical site.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to cover all possible implementations. Those skilled in the art will recognize that various variations and modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations and modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A laparoscopic cleaning sheath, characterized in that, include: The tube body (1) is provided with a laparoscope channel (101), a liquid channel (102) and a gas channel (103). A sheath end cap (2) is disposed at the distal end of the tube body (1). The sheath end cap (2) is provided with a liquid nozzle (2012) and a gas nozzle (2013). The liquid nozzle (2012) is connected to the liquid channel (102) and is used to spray liquid toward the endoscope located in the tube body (1). The gas nozzle (2013) is connected to the gas channel (103) and is used to spray gas toward the endoscope located in the tube body (1).

2. The endoscopic cleaning sheath according to claim 1, characterized in that, The sheath end cap (2) includes an end cap body (202) and a nozzle seat (201). The nozzle seat (201) is disposed at the far end of the end cap body (202), and the nozzle seat (201) has a V-shaped curved surface (2011). The liquid nozzle (2012) and the gas nozzle (2013) are both located on the V-shaped curved surface (2011). The opening at the far end of the end cap body (202) that is not obstructed by the nozzle seat (201) forms a viewing window.

3. The endoscope cleaning sheath according to claim 2, characterized in that, The V-shaped curved surface (2011) is provided with a plurality of gas nozzles (2013). The liquid nozzle (2012) is located at the bottom of the valley of the V-shaped curved surface (2011), and a plurality of gas nozzles (2013) are symmetrically and evenly distributed on both sides of the liquid nozzle (2012).

4. The endoscope cleaning sheath according to claim 3, characterized in that, The inner wall of the end cap body (202) is provided with an equal number of gas guide grooves (203) as the gas nozzles (2013). The outlet of the gas guide groove (203) serves as the gas nozzle (2013), and the inlet of the gas guide groove (203) is connected to the gas channel (103).

5. The endoscopic cleaning sheath according to claim 3, characterized in that, The end cap body (202) has a first flow channel (205) built into its side wall. The outlet of the first flow channel (205) extends to the V-shaped curved surface (2011) and is connected to the liquid nozzle (2012). A liquid nozzle is provided at the liquid nozzle (2012). A liquid interface is provided at the inlet of the first flow channel (205). The liquid interface is connected to the outlet of the liquid channel (102).

6. The endoscopic cleaning sheath according to claim 2, characterized in that, The distal end face of the end cap body (202) is an inclined surface (204) or a plane.

7. The endoscopic cleaning sheath according to claim 1, characterized in that, The gas channel (103) is an independent gas channel (103) opened in the side wall of the tube body (1). And / or, the inner diameter of the endoscope channel (101) is greater than the outer diameter of the endoscope, and when the endoscope is located in the endoscope channel (101), the gap between the inner wall of the endoscope channel (101) and the outer wall of the endoscope forms the gas channel (103).

8. The endoscopic cleaning sheath according to claim 1, characterized in that, It also includes a sheath seat (3), which is disposed at the proximal end of the tube body (1); The sheath (3) is provided with a first interface (304) and a second interface (305). The first interface (304) is used to connect to an external liquid source, and the second interface (305) is used to connect to an external gas source. The sheath (3) has a second flow channel (301) built into its side wall. The outlet of the second flow channel (301) is connected to the inlet of the liquid channel (102), and the inlet of the second flow channel (301) is connected to the first interface (304). The inlet of the gas channel (103) and the second interface (305) are both connected to the internal space of the sheath (3).

9. The endoscopic cleaning sheath according to claim 8, characterized in that, It also includes a sheath cap (4) and a seal (5); The sheath cap (4) is disposed at the proximal end of the sheath seat (3); The sealing element (5) is disposed between the sheath cover (4) and the sheath seat (3), and the sealing element (5) has at least two spaced sealing rings (501) along the axial direction of the sealing element (5). The inner diameter of the sealing ring (501) gradually decreases in the direction away from the sheath seat (3), and the wire diameter of the sealing ring (501) gradually decreases in the direction away from the sheath seat (3).

10. The endoscopic cleaning sheath according to claim 8, characterized in that, It also includes liquid pipelines (6), gas pipelines (7) and switching valves (8); One end of the liquid pipeline (6) is connected to the first interface (304), and the other end is adapted to be connected to a liquid source; One end of the gas pipeline (7) is connected to the second interface (305), and the other end is adapted to be connected to a gas source; The switch valve (8) is installed on both the liquid pipeline (6) and the gas pipeline (7).

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