JP6537687B1 - Laparoscopic cleaning trocar - Google Patents

Abstract

To provide a novel cleaning function capable of cleaning a camera lens of a laparoscope (endoscope) as well as cleaning a check valve provided in a trocar by a simple structure and a simple operation. Providing a laparoscopic cleaning trocar.
A puncture cylinder part and a main body part connected to one end of the puncture cylinder part, the main body part is a housing part, and an inner cylinder part formed inside the housing part and through which a laparoscope is inserted; A guiding channel for guiding the cleaning fluid to the inside of the inner cylinder, and the puncturing cylinder side of the housing are installed, and when the distal end of the laparoscope recedes into the inner cylinder, the inner cylinder is sealed, A switching valve unit is provided which opens the inner cylinder portion when the mirror is advanced to the puncture cylinder portion.
[Selected figure] Figure 2

Description

  The present invention relates to a laparoscopic cleaning trocar, and more particularly to a laparoscopic cleaning trocar which cleans a distal end portion of a laparoscope inserted together with a check valve in the trocar.

  Laparoscopic surgery (endoscopic surgery) is frequently used as a minimally invasive surgery. In laparoscopic surgery, carbon dioxide gas is injected into the abdominal cavity, and the abdominal wall is inflated to secure a space and a visual field for the surgery. In this case, a small hole is made in the abdominal wall, and a tubular device called a trocar (trocar) is inserted. The trocar is provided with a check valve (airtight valve) for preventing backflow of injected carbon dioxide and the like. A laparoscope, forceps, etc. are inserted into the trocar, and the operation is performed while watching the image displayed through the laparoscope.

  The inside of the abdominal cavity is a high temperature of about 37 ° C. or higher and a high humidity of almost 100%, and the laparoscopic lens is in an environment susceptible to clouding due to water vapor condensation. For this reason, the visual field is secured by heating the vicinity of the lens to a temperature higher than the body temperature or applying an anti-fogging agent. However, despite this, smoke generated from an electric scalpel used for laparoscopic surgery, tissue generated from an ultrasonic coagulating and cutting device, etc., fine particles such as blood, lymph, fat, etc. become mist and the tip of the laparoscope It adheres, and the lens of a laparoscope often has a present condition that securing of a field of vision becomes difficult frequently. Every time the camera lens gets dirty, the laparoscopic doctor interrupts the operation, removes the laparoscope from the trocar, wipes the lens at the tip of the laparoscope with wet gauze, warms the camera lens with warm water, or applies anti-fog It was necessary to wipe with more dry gauze. In addition, since the check valve of the trocar is also contaminated with particles such as blood and tissue as the laparoscope is moved in and out, the camera lens becomes dirty again when the laparoscope is reinserted, unless it is cleaned every time. Therefore, another surgical worker cleans the dirt attached to the check valve of the trocar for inserting the laparoscope by inserting a dry gauze every time the laparoscope is cleaned.

  Only with the procedures of cleaning the laparoscopic camera lens and cleaning the trocar check valve can the laparoscopic reinsertion be possible. Cleaning the laparoscopic camera lens and cleaning the trocar check valve takes approximately 30 seconds to 1 minute or so. However, the contamination of the laparoscopic camera lens makes the surgical field less visible, and frequently the operation is interrupted due to the cleaning of the camera lens and the check valve of the trocar. Therefore, it lacked the concentration of all the staff such as the doctor of laparoscopic surgery and caused the extension of the operation time.

  Then, the camera and the trocar which utilized the heat_generation | fever of LED illumination, for example, are proposed as stain | pollution | contamination of the camera lens of a laparoscope, fogging (refer patent document 1). There is also proposed an endoscope apparatus provided with a sheath that covers and covers an endoscope, and through which a cleaning solution is inserted (see Patent Document 2). Furthermore, a trocar equipped with a wiper, a brush and the like has also been proposed (see Patent Document 3).

  However, in the above-mentioned various trocars, lack of cleaning ability and complication of the device structure have been regarded as problems. Therefore, it was not always a satisfactory instrument at the surgical site. In addition, cleaning of the non-return valve provided in the trocar requires conventional cleaning, and overall the burden has not been reduced. Therefore, there is a strong demand for a device that is compatible with both cleaning of a camera lens of an endoscope (laparoscope) and cleaning of a check valve of a trocar smoothly and simply.

JP, 2016-150214, A Japanese Patent Application Laid-Open No. 11-47080 International Publication WO2014 / 185334

  The present invention has been made in view of the above-mentioned point, and the cleaning of the camera lens of the endoscope (laparoscope) is also combined with the cleaning of the check valve provided in the trocar by the simple structure and the simple operation. The present invention provides a laparoscopic cleaning trocar with a novel cleaning function that can be performed.

  That is, the laparoscopic washing trocar according to the first aspect includes a puncturing cylinder portion and a main body portion connected to one end of the puncturing cylindrical portion, the main body portion being formed inside a housing portion and the housing portion It is installed in the inner cylinder part which a laparoscope penetrates, the induction channel which guides washing fluid to the inside of the inner cylinder part, and the puncture cylinder part side of the housing part, and the tip part of the laparoscope is the inner cylinder. And a switching valve portion that seals the inner cylindrical portion when moving backward to the portion, and opens the inner cylindrical portion when the laparoscope advances to the puncture cylindrical portion.

  In the laparoscopic washing trocar of the second aspect, the switching valve portion is both a closing plate portion on the puncture cylinder portion side and a porous plate portion in which a through hole is bored and disposed immediately above the closing plate portion. The inner cylinder portion is hermetically sealed by the closing plate portion when the inner cylinder portion is sealed by the switching valve portion, and a cleaning fluid flowing in through the induction flow channel is ejected from the through hole to the laparoscope To wash.

  According to a third aspect of the present invention, in the laparoscopic cleaning trocar, the housing portion is provided with an inflow portion and an outflow portion of the cleaning fluid, the inner cylindrical portion is provided with a check valve, and the housing portion is formed inside a wall portion An in-wall flow passage is provided, which guides the cleaning fluid flowing from the inflow portion to the inside of the inner cylindrical portion and ejects the cleaning fluid from the inner cylindrical portion.

  The laparoscopic cleaning trocar according to the fourth aspect is characterized in that the perforated plate portion is provided with a peripheral wall portion, and the peripheral wall portion is inclined.

  According to a fifth aspect of the present invention, a notch is formed in the peripheral wall.

  A laparoscopic cleaning trocar according to a sixth aspect is characterized in that the switching valve part is provided with an operating lever projecting from the housing part.

  The laparoscopic washing trocar according to the seventh aspect is characterized in that the opening and sealing of the inner cylindrical portion by the switching valve portion is performed by rotation via the operation lever.

  The laparoscopic washing trocar according to the eighth aspect is characterized in that the housing portion includes a retracting portion for pivoting the switching valve portion.

  The laparoscopic washing trocar according to the ninth aspect is characterized in that a watertight member is provided on either or both of the closing plate portion and the perforated plate portion.

  According to a tenth aspect of the present invention, there is provided a laparoscopic cleaning trocar, wherein the inside of the inner cylindrical portion is in negative pressure by suction from the outflow portion.

  According to the laparoscopic cleaning trocar of the present invention, the puncture cylinder portion and the main body portion connected to one end of the puncture cylinder portion are provided, and the main body portion is formed inside the housing portion and the housing portion and the laparoscope is It is installed on the inner cylindrical part to be inserted, a guiding flow path for guiding the cleaning fluid to the inside of the inner cylindrical part, and the puncture cylindrical part side of the housing part, and the tip of the laparoscope recedes to the inner cylindrical part And a switching valve portion for sealing the inner cylindrical portion and opening the inner cylindrical portion when the laparoscope moves forward to the puncture cylindrical portion, thereby providing a trocar with a simple structure and a simple operation. The cleaning of the laparoscopic camera lens can be performed together with the cleaning of the check valve provided inside. Therefore, the burden on the laparoscopic surgery staff can be reduced, which can contribute to the efficiency of the surgery.

It is a 1st principal part perspective view of the laparoscopic washing | cleaning trocar of this embodiment. It is a 2nd principal part perspective view of the laparoscopic washing | cleaning trocar of this embodiment. FIG. 2 is a partial side schematic view of a laparoscopic cleaning trocar. It is a partial top view of the housing part which accommodates a switching valve part. They are a principal part longitudinal cross-sectional view and a top view of a switching valve part. It is a top view of the switching valve part of a closed state. It is a top view of the switching valve part of an open state. FIG. 7 is a first partial side view illustrating the operation of the laparoscopic cleaning trocar. FIG. 10 is a second partial side view illustrating the operation of the laparoscopic cleaning trocar. FIG. 21 is a third partial side view illustrating the operation of the laparoscopic cleaning trocar.

  The structure of the laparoscopic cleaning trocar 1 according to the embodiment of the present invention will be described using the main part perspective view of FIGS. 1 and 2 and the side schematic view of FIG. 3. Generally, a trocar is also referred to as trocar, trocar, etc., and is a cylindrical device which is pierced into the abdomen of a human and penetrates the abdominal wall. At the time of laparoscopic surgery, a laparoscope 3 (endoscope), forceps, etc. are inserted into the trocar. In the partial side view of the laparoscopic cleaning trocar 1 of FIG. 3 and the subsequent figures, the laparoscope 3 inserted inside is depicted by a solid line in order to make it easy to see the position of the laparoscope 3 and the like.

  The laparoscopic cleaning trocar 1 includes a puncture cylinder 2 and a main body 10 connected to one end (upper side in FIGS. 1 and 2) of the puncture cylinder 2. The puncture cylinder 2 is omitted in the middle of the drawing. In the actual laparoscopic cleaning trocar 1, the puncture tube portion 2 further extends downward in the drawing. A grip 51 is further provided on the upper side of the main body 10 (the opposite side of the puncturing cylinder 2) (see FIG. 3). When the laparoscopic cleaning trocar 1 is punctured into the abdomen, the grasping portion 51 is grasped by a doctor or the like. Inside the grip portion 51, one of two check valves (airtight valves) for maintaining an insufflation is provided. The laparoscope 3 (see FIG. 3 and the like) is inserted into the puncture cylinder 2 via the main body 10 of the laparoscopic cleaning trocar 1. The distal end portion 4 of the laparoscope 3 is equipped with a camera lens, a light source lens, etc. (not shown).

  The main body 10 includes a housing 11, a guide channel 20, a switching valve 40, and a mechanism necessary for laparoscopic cleaning including one of a check valve. The housing portion 11 includes an inner cylindrical portion 12 in which the laparoscope 3 is inserted. The inner cylindrical portion 12 is provided with a guiding channel 20, and the cleaning fluid is guided to the inside of the inner cylindrical portion 12 through the guiding channel 20. The washing fluid is mainly distilled water, physiological saline, and is heated to 40 to 45 ° C. and used for laparoscopic washing.

  The switching valve unit 40 is installed on the puncture cylinder 2 side of the housing unit 11 (the lower end side of the main body unit 10 in FIGS. 1 and 2). When the distal end portion 4 of the laparoscope 3 is retracted to the inner cylindrical portion 12, the switching valve portion 40 is moved to the inner cylindrical portion 12 to seal the inner cylindrical portion 12 (see FIG. 9 described later). Further, the switching valve unit 40 opens the inner cylindrical portion 12 when advancing the laparoscope 3 to the puncture cylindrical portion 2. That is, the switching valve unit 40 plays a role of opening and closing the inner cylindrical portion 12 according to the advancement and withdrawal of the laparoscope 3. In the inner cylindrical portion 12 when the laparoscope 3 is retracted, the room for cleaning is Form inside.

  The switching valve unit 40 is provided with an operation lever 47. The control lever 47 is protruded from the housing portion 11. The operation lever 47 provided protruding is operated by the operator. The opening and sealing of the inner cylindrical portion 12 are performed by the rotation of the switching valve portion 40 via the operation lever 47. The operation lever 47 is configured such that its end is exposed from an opening provided in the housing portion 11. Therefore, the housing portion 11 is provided with the retracting portion 18 for the rotation of the switching valve portion 40. In the schematic view of FIG. 3, the switching valve unit 40 is in a state of being moved to the retracting unit 18 and is not shown. The structure and operation of the switching valve unit 40 will be described with reference to FIGS. 4 to 7.

  Furthermore, an inlet 13 and an outlet 14 of the cleaning fluid are provided in the housing 11. The induction flow passage 20 is connected to the inflow portion 13, and the induction flow passage 20 receives the cleaning fluid flowing in from the inflow portion 13. Further, check valves 15 a and 15 b are provided inside the inner cylindrical portion 12 of the housing portion 11. More specifically, the check valve 15 a is provided inside the grip 51, and the check valve 15 b is incorporated into the inner cylindrical portion 12. The grip portion 51 is detachably connected to the inner cylindrical portion 12 by a screw. When various trocars such as the laparoscopic cleaning trocar 1 are punctured into the abdomen, carbon dioxide gas is injected through the trocar to secure a surgical area in the abdominal cavity, and the abdominal cavity is maintained at a positive pressure (pneumoperitoneum). There is a check valve inside the trocar, and even if the surgical tool is inserted, carbon dioxide will not leak and air tightness will be maintained, but even if the surgical tool is withdrawn, air tightness will be maintained. However, for a moment when the surgical tool is put in and out, fine particles such as blood and tissue accompanied by bleeding in the surgical area may backflow to the inner cylindrical portion 12 together with carbon dioxide gas. Although the same applies to the laparoscopic cleaning trocar 1, check valves 15a and 15b are provided to suppress the ejection of the backflow as described above.

  The inflow side cock 53 is provided in the inflow part 13 and the outflow side cock 54 is provided in the outflow part 14. The supply (inflow and outflow) and shutoff of the irrigation fluid is operated by the operating personnel through the inflow cock 53 and the outflow cock 54. A supply tank for the cleaning fluid, a supply side pipe (not shown), and the like are connected to the inflow portion 13. A suction tube (not shown) for cleaning fluid is connected to the outflow portion 14. The suction tube is connected to a suction device (pressure reduction pump) (not shown). Therefore, when the aspirator is operated, the inside of the inner cylindrical portion 12 has a negative pressure through suction from the outflow portion 14.

  An in-wall flow passage 21 is formed in the wall portion 16 of the housing portion 11 of the main body portion 10. The cleaning fluid which has flowed in from the inflow portion 13 is guided via the in-wall flow passage 21 and is jetted to the inside 17 of the inner cylindrical portion 12 through the wall nozzle portion 22. The check valves 15a and 15b and the side surface 5 of the laparoscope 3 are cleaned by the cleaning fluid ejected from the wall nozzle 22 (see FIGS. 9 and 10 described later).

  The detailed structure of the switching valve unit 40 will be described with reference to FIGS. 4 to 7. The switching valve unit 40 is formed of an operation lever 47 and a valve body 57. Further, in the switching valve portion 40, a pivot shaft 55 is provided between the operation lever 47 and the valve body portion 57. The rotation shaft 55 is rotatably supported by the housing portion 11. Arc-shaped pivoting of the control lever 47 and the valve body portion 57 around the pivot shaft 55 is possible. As understood from FIG. 4, the valve body portion 57 can be moved simply and smoothly by the operation of the fingertip of the operation lever 47. In particular, the switching operation is easy. As a result, switching of opening and sealing of the inner cylinder part 12 becomes easy. An annular bearing packing 56 is provided around the rotation shaft 55. A lever opening 58 is formed in the housing 11 so that the operation lever 47 is protruded from the housing 11 and is rotated. Therefore, by providing the shaft attachment packing 56 on the rotation shaft 55, even if the switching valve portion 40 rotates, the lever opening 58 for the operation lever 47 is closed, and the airtightness of the housing portion 11 is improved. Secured.

  5A is an enlarged cross-sectional view of the valve body 57 of the switching valve unit 40 and FIG. 5B is an enlarged top view of the valve body 57 of the switching valve unit 40. As can be understood from the drawing, both the closing plate portion 41 and the perforated plate portion 43 directly above the closing plate portion 41 are provided on the side of the puncture cylinder 2 (the lower side in the drawing). In the perforated plate portion 43, a plurality of through holes 42 penetrating the perforated plate portion 43 are provided. The diameter of the through hole 42 is 0.5 to 1.0 mm (about 0.8 mm in the embodiment). The through hole 42 is connected to the in-valve flow path 49. Then, the in-valve flow passage 49 is connected to the induction flow passage 20 when it moves to a predetermined position by rotation (see FIG. 4). The cleaning fluid is jetted vertically from the through hole 42 through the in-valve flow path 49.

  A peripheral wall 45 is provided to surround the outer peripheral edge of the perforated plate 43. The inside of the peripheral wall 45 is inclined in a mortar shape. In the embodiment, the inclined portion 44 is provided inside the peripheral wall 45. The inclined portion 44 is formed of a known soft material such as SBR, silicone rubber, urethane rubber or the like. When the distal end 4 of the laparoscope 3 is cleaned, the distal end 4 of the laparoscope 3 is pressed against the perforated plate 43. At this time, the inclined portion 44 serves as a buffer material, and the distal end portion 4 of the laparoscope 3 is received (seated), and damage to the distal end portion 4 is also avoided. Further, the distance between the tip 4 of the laparoscope 3 and the perforated plate 43 is also kept constant. In addition, even if the distal end 4 of the laparoscope 3 has an oblique shape unlike the illustration, since the inclined portion 44 acts as a buffer, damage to the distal end is similarly avoided.

  As can be understood from FIG. 5 (b), notches 46 are formed in the peripheral wall 45 and the slope 44 as a cut of the wall. The peripheral wall 45 (inclined portion 44) and the distal end portion 4 of the laparoscope 3 abut, and the cleaning fluid is spouted from the through hole 42. Then, the contaminated cleaning fluid after cleaning is immediately accumulated in the space surrounded by both. In this case, the cleaning efficiency of the distal end portion 4 of the laparoscope 3 is deteriorated. There, excess cleaning fluid and contaminated cleaning fluid are quickly drained out of the notch 46.

  In addition to the above-mentioned bearing packing 56, a watertight member 48 is also provided which ensures the airtightness between the housing portion 11 and the switching valve portion 40. The watertight member 48 is provided to either the closing plate portion 41 or the perforated plate portion 43 or to both the closing plate portion 41 and the perforated plate portion 43. In the illustrated embodiment, the watertight member 48 is provided on both the closing plate portion 41 and the perforated plate portion 43. The watertight member 48 is also formed of a known soft material such as SBR, silicone rubber, urethane rubber, etc., similarly to the inclined portion 44. By providing the water-tight member 48, the airtightness in the vertical direction of the housing portion 11 and the puncture cylinder portion 2 is enhanced.

  FIG. 6 shows the housing portion 11 in a sealed state by the operation of the switching valve portion 40. The control lever 47 of the switching valve unit 40 is pivoted about the pivot shaft 55 clockwise (clockwise). Then, the valve body portion 57 of the switching valve portion 40 is also rotated, and the lower end of the inner cylindrical portion 12 is sealed by the closing plate portion 41, and the inner cylindrical portion 12 is airtight. At this time, the in-valve flow path 49 is connected to the induction flow path 20, the cleaning fluid flowing into the inner cylindrical portion 12 through the induction flow path 20 is spouted from the through hole 42, and the laparoscope 3 is cleaned. That is, the porous plate portion 43 and the through hole 42 function as a shower head for the distal end portion 4 of the laparoscope 3. In the sealed state, the distal end 4 and the side surface 5 of the laparoscope 3 are cleaned. The waste fluid of the washing fluid at the time of washing is discharged from the notch 46 and the like to the outside of the laparoscopic washing trocar 1 through the outflow part 14.

  FIG. 7 shows the housing portion 11 in the state of being opened by the operation of the switching valve portion 40. As shown in FIG. The control lever 47 of the switching valve unit 40 is pivoted leftward (counterclockwise) on the drawing about the pivot shaft 55. Then, the valve body portion 57 of the switching valve portion 40 is also rotated, and the lower end of the inner cylindrical portion 12 is released from the sealing by the closing plate portion 41, and the air tightness of the inner cylindrical portion 12 is released toward the abdominal cavity side. In this state, the laparoscope 3 is inserted into the puncture cylinder 2 side, and further into the abdominal cavity at the back. As understood from the drawing, the valve body portion 57 of the switching valve portion 40 moves to the retracting portion 18 of the housing portion 11 and is accommodated in the retracting portion 18. Therefore, even when the laparoscope 3 is not cleaned, the valve body portion 57 of the switching valve portion 40 is accommodated in the retracting portion 18 of the housing portion 11, and the valve body portion 57 of the switching valve portion 40 does not interfere. In particular, the laparoscopic cleaning trocar 1 can have both the check valve and the laparoscopic cleaning function without increasing the size more than necessary.

  From this, the aspect of washing of the laparoscope 3 in the laparoscopic washing trocar 1 will be sequentially described using the partial side views of FIGS. 8 to 10. The partial side view of FIG. 8 is a state in which the laparoscope 3 is inserted in the abdominal cavity. FIG. 8 shows the state of treatment using a normal laparoscope. In the drawing, the retracting portion 18 is directed to the back side in the drawing, and the switching valve portion 40 is illustrated by a two-dot chain line. The check valves 15a and 15b are in contact with the side surface 5 of the laparoscope 3, and the air tightness in the inner cylindrical portion 12 is secured. Therefore, backflow from the puncturing cylinder 2 side of the injected blood, particulates such as tissue accompanied by carbon dioxide gas, and smoke is suppressed via the check valves 15a and 15b. The inflow side cock 53 is closed, and the inflow of the cleaning fluid into the inner cylindrical portion 12 is stopped. Further, at this time, the outflow side cock 54 is also closed. Maintenance of insufflation during operation is performed by carbon dioxide gas delivered from the insufflator through the insufflation tube through the inlet of another trocar (not shown). The insufflator is equipped with a pressure sensor in the abdominal cavity, and if there is a drop in pressure, carbon dioxide gas is sent as needed to maintain a constant pressure (usually 8 to 12 mmHg).

  If the operation is continued, the smoke generated from the electric scalpel or the mist of fine particles such as blood, tissue, or fat generated from the ultrasonic coagulating and cutting device may adhere to the camera lens at the tip 4 of the laparoscope 3, or blood The view of the surgical field is deteriorated by the camera lens suddenly touching dirty tissue. Further, by taking in and out the laparoscope 3 whose surface is soiled, fine particles such as blood, tissue and fat also adhere to the check valves 15a and 15b. If dirt on the check valve is left, the camera lens of the distal end portion 4 of the laparoscope 3 will be stained. Therefore, as shown in FIG. 9, the laparoscope 3 is pulled up (retracted) until the tip 4 of the laparoscope 3 reaches the inside of the inner cylindrical portion 12. Then, through the operation of the operation lever 47, the valve body portion 57 of the switching valve portion 40 pivots to a predetermined position, and the lower end of the inner cylindrical portion 12 is sealed by the switching valve portion 40.

  After sealing of the inner cylindrical portion 12 is sufficient, as shown in FIG. 10, the distal end portion 4 of the laparoscope 3 is brought close to or in contact with the inclined portion 44 provided inside the peripheral wall 45 of the porous plate 43 Ru. A tube (not shown) of the cleaning fluid is connected to the inflow portion 13, the inflow side cock 53 is opened, the outflow side cock 54 is further opened, and suction from the suction tube connected to the outflow portion 14 is started. Thus, the suction force becomes a driving force, and the cleaning fluid flows in the order of the inflow portion 13, the guiding flow path 20, and the in-wall flow path 21. Then, the cleaning fluid is spouted from the wall nozzle portion 22, and the side surface portion 5 of the laparoscope 3 and the check valves 15a and 15b are cleaned. At the same time, the cleaning fluid is also ejected from the through holes 42 of the perforated plate 43, and the tip 4 of the laparoscope 3 is intensively cleaned in the manner of a shower. The used (contaminated) cleaning fluid after cleaning is drained from the notch 46 and is discharged to the aspirator side through the outflow portion 14.

  The supply and drive of the cleaning fluid from the inflow portion 13 side is not performed by the positive pressure, but is performed exclusively by the negative pressure of suction at the outflow portion 14 side. For this reason, at the time of washing | cleaning, the inside of the inner cylinder part 12 is always maintained by negative pressure. Therefore, the cleaned cleaning fluid does not stay in the inner cylinder portion 12. Moreover, since the inside of the inner cylinder 12 is always maintained at a negative pressure, the cleaning fluid leaks from the puncturing cylinder 2 side into the abdominal cavity from the puncturing cylinder 2 side after passing the switching valve 40 or forcibly backflows the check valves 15a and 15b. It is extremely unlikely that the cleaning fluid will flow out of the inner cylindrical portion 12 such as the

  When cleaning of the laparoscope 3 and the check valves 15a and 15b is finished, the drying of them continues. That is, the supply of the cleaning fluid from the inflow portion 13 side is stopped, and instead, the inflow portion 13 side is released to the atmosphere to start the inflow of air. Suction from the outflow portion 14 is continued for a while. At this time, since the inside of the inner cylindrical portion 12 is maintained at a negative pressure, air intrudes into the inner cylindrical portion 12 from the outside of the laparoscopic cleaning trocar 1, and the laparoscope 3 and the non-return in the inner cylindrical portion 12 The valves 15a, 15b are dried. Thus, the laparoscope 3 that has been cleaned can be inserted into the abdominal cavity again.

  As understood from the description in FIGS. 9 and 10, in the laparoscopic cleaning trocar 1, the operator can mainly operate the operation lever 47 of the switching valve portion 40 of the main body portion 10. By this operation, it is possible to simply and easily clean not only the side surface 5 of the laparoscope 3 and the check valves 15a and 15b but also the cleaning of the tip 4 of the laparoscope 3 in a single member of washing and drying (embodiment Complete in the inner cylindrical portion 12) of the housing portion 11 in FIG. Therefore, it is not necessary at all to take out and wash the laparoscope once inserted into the trocar or to wipe off the check valve. Therefore, it is possible to reduce the burden on the surgical worker using the laparoscope and to improve the efficiency of the surgical operation.

  According to the laparoscopic cleaning trocar of the present invention, the cleaning of the camera lens of the laparoscope can be performed together with the cleaning of the check valve provided in the trocar by the simple structure and the simple operation. Contribute to reducing the work burden on Thus, it is a promising alternative to existing laparoscopic trocars.

DESCRIPTION OF SYMBOLS 1 laparoscopic washing trocar 2 puncture cylinder part 3 laparoscope 4 tip part of laparoscope 5 side part of laparoscope 10 main body part 11 housing part 12 inner cylinder part 13 inflow part 14 outflow part 15a, 15b check valve 16 wall part 18 Retraction part 20 induction flow path 21 wall internal flow path 22 wall part nozzle part 40 switching valve part 41 closing plate part 42 through hole 43 perforated plate part 44 inclined part 45 peripheral wall part 46 notch part 47 operation lever 48 watertight member 49 inner flow of valve Passage 51 Gripping part 53 Inflow side cock 54 Outflow side cock 55 Rotary shaft 56 Bearing packing 57 Valve body part 58 Lever opening

Claims (9)

A puncture cylinder, and a main body connected to one end of the puncture cylinder;
The body portion is
A housing part,
An inner cylindrical portion formed inside the housing portion and through which a laparoscope is inserted;
A guiding channel for guiding a cleaning fluid to the inside of the inner cylindrical portion;
It is installed on the puncture cylinder side of the housing part, and when the distal end of the laparoscope retracts to the inner cylinder, the inner cylinder is sealed, and when advancing the laparoscope to the puncture cylinder. And a switching valve unit for opening the inner cylindrical portion .
The switching valve portion includes both a closing plate portion on the side of the puncturing cylinder portion and a porous plate portion having a through hole and disposed immediately above the closing plate portion.
At the time of sealing of the inner cylindrical portion by the switching valve portion, the inner cylindrical portion is airtightly sealed by the closing plate portion, and a cleaning fluid flowing in through the induction flow channel is spouted from the through hole to clean the laparoscope laparoscopic washed Toroka, characterized by. The housing part is provided with an inflow part and an outflow part of cleaning fluid;
A check valve is provided in the inner cylindrical portion,
The abdominal cavity according to claim 1 , further comprising an in-wall flow passage formed inside the wall of the housing and guiding the cleaning fluid flowing from the inflow portion to the inside of the inner cylindrical portion and spouting from the inner cylindrical portion. Mirror cleaning trocar. The laparoscopic cleaning trocar according to claim 1 , wherein the perforated plate portion is provided with a peripheral wall portion, and the peripheral wall portion is inclined. The laparoscopic cleaning trocar according to claim 3 , wherein a notch is formed in the peripheral wall. The laparoscopic cleaning trocar according to any one of claims 1 to 4 , wherein the switching valve portion is provided with an operating lever projecting from the housing portion. The laparoscopic cleaning trocar according to claim 5 , wherein the opening and sealing of the inner cylindrical portion by the switching valve portion is performed by rotation via the operation lever. The laparoscopic cleaning trocar according to claim 6 , wherein the housing portion comprises a retracting portion for pivoting the switching valve portion. The laparoscopic cleaning trocar according to claim 1 , wherein a watertight member is provided on either or both of the closing plate portion and the perforated plate portion. The laparoscopic cleaning trocar according to claim 2 , wherein the inside of the inner cylindrical portion has a negative pressure due to the suction from the outflow portion.

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