Suction device equipped with an irrigation function

Abstract

Suction device equipped with an irrigation function, comprising: a suction device body; a rotary lever arranged in such a way that it can be opened or closed in relation to the suction device body; a suction path arranged in the suction device body; an irrigation path arranged in the suction device body; a flexible tube attached to a proximal end of the suction device body, wherein a distal end of the flexible tube is directed towards a surgical site; a first switching mechanism comprising a rotary valve, wherein the first switching mechanism performs switching to cause the suction path and flexible tube to be connected or disconnected from each other; a second switching mechanism comprising a closing valve, wherein the second switching mechanism performs switching to cause the irrigation path and flexible tube to be connected or disconnected from each other; and a conversion mechanism which converts an opening / closing movement of the rotary lever into a linear movement along a longitudinal direction of the irrigation path by means of a rotary drum to move the closing valve, wherein: when the suction path and the flexible tube are connected by the first switching mechanism, the irrigation path is closed by the second switching mechanism and the conversion mechanism; when the suction path is closed by the first switching mechanism, the irrigation path and the flexible tube are connected by the second switching mechanism and the conversion mechanism; the first switching mechanism is arranged in a first section in the suction device body; the second switching mechanism and the conversion mechanism are arranged in a second section in the suction device body; a part contained in the conversion mechanism is arranged in the irrigation path, wherein the part performs a linear movement along the longitudinal direction of the irrigation path; the irrigation path is connected to the suction path at a position on the side of the flexible tube with respect to the rotary valve contained in the first switching mechanism and the rotary drum contained in the conversion mechanism on the basis of a plane perpendicular to a linear line along the longitudinal direction of the irrigation path; and The closing valve contained in the second switching mechanism is arranged at a position on one side opposite the flexible tube in relation to the rotary valve contained in the first switching mechanism and the rotary drum contained in the conversion mechanism, on the basis of the plane perpendicular to the linear line along the longitudinal direction of the irrigation path.

Description

Technical field

[0001] The present invention relates to a suction device equipped with an irrigation function and relates in particular to a suction device equipped with an irrigation function for use in the medical field, for example for brain surgery. Current state of the art

[0002] In brain surgery or operations for traumatic injuries, etc., measures may be necessary to remove blood, body fluids, cerebrospinal fluid, bone fragments, etc., that accumulate at a surgical site, such as in the brain or at a traumatic injury site of a human or animal body, and measures to irrigate the surgical site to clean the surgical site.

[0003] A suction device equipped with an irrigation function is used as a medical instrument for use in the surgery described above, etc.

[0004] A suction device equipped with an irrigation function has both a function that removes blood, etc., which collects at a surgical site, such as in the brain or at a traumatic injury site, of a human or animal body, and a function that irrigates the surgical site to clean it.

[0005] The use of the suction device equipped with an irrigation function allows a surgeon to repeatedly clean and aspirate a surgical site using a surgical instrument, such as a surgical knife or forceps, in one hand and the suction device equipped with an irrigation function in the other hand.

[0006] In particular, during a complicated operation, it is difficult for an assistant rather than a surgeon to determine when to suction the surgical site and when to clean it.

[0007] The suction device equipped with an irrigation function allows a surgeon to operate it with one hand at their own discretion. Even without an assistant performing suction / cleaning, a surgeon can smoothly conduct an operation at a surgical site using the suction device with irrigation function.

[0008] Under the circumstances described above, a variety of such suction devices equipped with an irrigation function have been proposed.

[0009] A first method according to the prior art is a suction device equipped with an irrigation function, in which a plurality of valves, so-called trumpet valves, are arranged perpendicular to a longitudinal direction of the irrigation and suction path (patent literature 1). Switching between the irrigation function and a suction function can be effected by pressing the trumpet valves with fingers.

[0010] In the case of a suction device equipped with an irrigation function comprising trumpet valves, a surgeon must press the trumpet valves vertically with two or more fingers when switching between irrigation and suction operation.

[0011] However, when the trumpet valves are pressed vertically with fingers, the respective distal ends of the irrigation and suction pathways move slightly vertically. Therefore, a suction device equipped with an irrigation function and trumpet valves presents the problem of difficulty in performing precise surgery.

[0012] A second prior art method is a suction device equipped with an irrigation function and a structure in which an irrigation path is arranged outside a suction tube body, so that it leads into a side hole of the suction tube body, enabling irrigation and suction from a distal end of the suction tube body (Patent Literature 2).

[0013] The suction device, equipped with an irrigation function, includes a valve for compressing an irrigation tube connected to the irrigation path. The irrigation tube is supplied with water from the irrigation tube, and pressing the valve with a guide causes the irrigation tube to be compressed, thus stopping the irrigation. Opening the valve allows the irrigation to resume.

[0014] Similarly, the suction tube body of the suction device equipped with an irrigation function includes an opening section that leads to the atmosphere. The suction effect of the suction device with an irrigation function can be adjusted by closing the opening section with a finger or by moving the finger away from the opening section.

[0015] However, a problem arises in that when a sterilized irrigation tube is compressed, the compressed parts tend to stick together, and the sterilized irrigation tube is difficult to return to its original shape. Similarly, repeated compression of the irrigation tube can cause it to break, which may necessitate the repair or replacement of the suction device equipped with an irrigation function during surgery.

[0016] A third prior art method was proposed which attempts to solve the problems of the first and second prior art methods (patent literature 3 and 4). Fig. 20 and Fig. Figure 21 shows schematic sectional views illustrating a suction device 200 equipped with an irrigation function according to the third method of the prior art.

[0017] The suction device 200, disclosed in the third prior art method and equipped with an irrigation function, comprises a suction device body 202. A suction path 210 and an irrigation path 212 are arranged in the suction device body 202.

[0018] A flexible tube 220 is also arranged in the suction device body 202. Suction or irrigation can be performed via a distal end 222 of the flexible tube 220, which allows for the removal of blood, etc., from a surgical site on a patient or the cleaning of the surgical site on the patient.

[0019] A rotary valve 230, which enables switching between a connection of the suction path 210 with the flexible tube 220 and a connection of the irrigation path 212 with the flexible tube 220, is arranged in the suction device body 202.

[0020] A rotary lever 240 is arranged on an upper section of the suction device body 202. The rotary lever 240 includes a locking mechanism with the rotary valve 230, and when the rotary lever 240 is pressed with a finger, the rotary valve 230 rotates counterclockwise (see Fig. 21). If, in turn, the pressing of the rotary lever 240 with a finger is stopped, the rotary valve 230 rotates clockwise and thus returns to an initial state (see Fig. 20).

[0021] From the Fig. 20 and Fig. 21 shows that an irrigation function as well as a suction function of the suction device 200 equipped with an irrigation function is carried out via a zero point which prevents simultaneous irrigation and suction.

[0022] Likewise, a flexible tube 232 is connected to the rotary lever 240, and a recessed suction pressure fine adjustment hole 234 is arranged in the rotary lever 240. The suction path 210 is open to the atmosphere through the suction pressure fine adjustment hole 234.

[0023] Suction power can also be adjusted by closing the suction pressure fine adjustment hole 234 with a finger or by moving the finger away from the suction pressure fine adjustment hole 234.

[0024] In both cases of the first and second methods according to the prior art, when the suction device equipped with an irrigation function is used, two or more valves must be controlled simultaneously.

[0025] In the case of the third method according to the state of the art, it is possible to switch between suction and irrigation by actuating the single rotary lever 240, which is convenient.

[0026] Likewise, the flexible pipe 220 and a suction pipe connected to the suction path 210 (not shown) are linearly connected to each other.

[0027] Therefore, solid materials, such as bone fragments, drawn in by the flexible tube are immediately transported out of the suction device body 202 through the interior of the suction tube. With the structure of the third prior art method, fewer solid materials accumulate in the suction device body 202, thus preventing the interior of the suction tube from becoming clogged by bone fragments, etc., drawn in by the flexible tube 220.

[0028] Although not specifically described, the third method according to the prior art discloses, in addition to the method which switches between irrigation and suction via the single rotary valve 230, a method which switches between irrigation and suction via a combination of the rotary valve 230 and a piston valve.

[0029] Furthermore, the third method according to the prior art also discloses a method in which a conduit path is arranged in one direction orthogonal to the respective longitudinal directions of the suction path 210 and the irrigation path 212 and the conduit path are moved vertically by a piston valve.

[0030] Irrigation can be carried out by connecting the suction path 210 and the irrigation path 212 by a vertical movement of the piston valve.

[0031] When the pipe path is moved away from a pipe position, and thus the suction path 210 and the irrigation path 212 are separated from each other by a vertical movement of the piston valve, the irrigation is stopped.

[0032] A mechanism which adjusts a suction force on the side of the suction path 210 via the rotary valve 240 according to the actuation of the piston valve is also disclosed in the third method according to the prior art. List of quotations Patent literature Patent literature 1: US 9,259,519 B2 Patent Literature 2: JP H02-86560 U Patent literature 3: Japanese JP 2001-245 967 A Patent literature 4: JP 4 330 753 B2 Summary of the invention; Technical task

[0033] Based on the investigation of a suction device equipped with an irrigation function according to the third prior art method, the present inventors have found that a problem exists insofar as liquid escapes from a suction device body when the suction device equipped with an irrigation function is used.

[0034] In particular, if liquid leaks from the suction device body, the liquid that escaped during suction is transported out of the suction device equipped with an irrigation function through a suction path, and thus the prepared liquid is essentially consumed in excess of an estimated usage quantity.

[0035] To solve the problem of liquid leakage, the present inventors have addressed the problem of liquid leakage by investigating an improvement of the suction device equipped with an irrigation function and the installation of a rubber seal on a part from which liquid leaks.

[0036] Despite repeated attempts at improvement using the trial-and-error method, unfortunately no structures of suction devices equipped with an irrigation function have yet been able to solve the problem of liquid leakage.

[0037] One objective of the present invention is to provide a suction device equipped with an irrigation function that prevents the leakage of liquid. Solution to the problem

[0038] When fluid leaks from a moving part, it is normal to seek a countermeasure for the moving part itself from which the fluid is leaking.

[0039] Following extensive investigations to solve the problem described above, the inventors developed the innovative idea of ​​installing a shut-off valve upstream in an irrigation path of a suction device equipped with an irrigation function. Here, "upstream in an irrigation path" refers to the side of the irrigation path from which liquid flows into the suction device body.

[0040] The present inventors have discovered that, when a shut-off valve is installed upstream in an irrigation path, closing the irrigation path prevents fluid pressure from acting on the respective mechanisms in the suction device body, with the mechanisms being arranged downstream of the shut-off valve. Additionally, a first switching mechanism, which toggles between connecting and closing a suction path, is arranged in a first section, and a conversion mechanism, which converts an opening / closing movement of a rotary lever into a linear movement along a longitudinal direction of the irrigation path, is arranged in a second section. This ensures that, even if fluid leaks during the operation of the conversion mechanism, which is in contact with the irrigation path, a path of direct flow of the leaked fluid from the second section to the first section is closed.

[0041] The present inventors have discovered that if the respective mechanisms are arranged separately in the first section and the second section, it is possible to prevent liquid escaping from the conversion mechanism, which causes a liquid leakage, from being continuously drawn towards the suction path side, and have thus completed the present invention.

[0042] In particular, the present invention provides [1] A suction device equipped with an irrigation function, comprising: a suction device body; a rotary lever arranged in such a way that it can be opened or closed in relation to the suction device body; a suction path arranged in the suction device body; an irrigation path arranged in the suction device body; a flexible tube attached to a proximal end of the suction device body, wherein a distal end of the flexible tube is directed towards a surgical site; a first switching mechanism comprising a rotary valve, wherein the first switching mechanism performs switching to cause the suction path and flexible tube to be connected or disconnected from each other; a second switching mechanism comprising a closing valve, wherein the second switching mechanism performs switching to cause the irrigation path and flexible tube to be connected or disconnected from each other; and a conversion mechanism which converts an opening / closing movement of the rotary lever into a linear movement along a longitudinal direction of the irrigation path by means of a rotary drum to move the closing valve, wherein: when the suction path and the flexible tube are connected by the first switching mechanism, the irrigation path is closed by the second switching mechanism and the conversion mechanism; when the suction path is closed by the first switching mechanism, the irrigation path and the flexible tube are connected by the second switching mechanism and the conversion mechanism; the first switching mechanism is arranged in a first section in the suction device body; the second switching mechanism and the conversion mechanism are arranged in a second section in the suction device body; a part contained in the conversion mechanism is arranged in the irrigation path, wherein the part performs a linear movement along the longitudinal direction of the irrigation path; the irrigation path with the suction path at a position on the side of the flexible tube in relation to the rotary valve contained in the first switching mechanism and the rotary drum contained in the conversion mechanism, is connected on the basis of a plane perpendicular to a linear line along the longitudinal direction of the irrigation path; and the closing valve contained in the second switching mechanism is located at a position on one side opposite the flexible tube in relation to the rotary valve contained in the first switching mechanism and the rotary drum contained in the conversion mechanism, is arranged on the basis of the plane perpendicular to the linear line along the longitudinal direction of the irrigation path.

[0043] Likewise, one aspect of the present invention provides [2] the suction device equipped with an irrigation function according to [1], wherein, when the irrigation path is closed by the second switching mechanism, a path to the atmosphere is maintained for the conversion mechanism.

[0044] Likewise, one aspect of the present invention provides [3] the suction device equipped with an irrigation function according to [1] or [2], wherein: the second switching mechanism includes a shut-off valve that closes the irrigation path, and an irrigation path internal connecting element that performs a linear movement along the longitudinal direction of the irrigation path with respect to the closing valve, together with an actuation of the conversion mechanism; and a mechanism that controls the movement and stopping of the closing valve during the linear movement of the irrigation path internal connecting element.

[0045] Likewise, one aspect of the present invention provides [4] the suction device equipped with an irrigation function according to one of points [1] to [3], comprising: a first opening / closing connecting element and a second opening / closing connecting element each movably connected to the rotary lever; a first rotary connecting element movably connected to the first opening / closing connecting element; a second rotary connecting element movably connected to the second opening / closing connecting element; a rotary valve movably connected to the first rotary connecting element; and a rotating drum movably connected to the second rotating connecting element; wherein a mechanism in which the irrigation path internal connecting element is movably connected to the rotating drum, together with the process of inserting the first opening / closing connecting element on the first section, the rotary valve rotates and thereby closes the suction path, together with the process of inserting the second opening / closing connecting element on the second section, the rotary drum rotates and thereby connects the irrigation path, and After the suction path is closed, the irrigation path is connected, and a mechanism in which together with the actuation of the first opening / closing connecting element to pull out the first section, the rotary valve rotates and thereby connects the suction path, together with the activation of the second opening / closing connecting element to pull out the second section, the rotary drum rotates and thereby closes the irrigation path, and After closing the irrigation path, the suction path will be connected and made available.

[0046] Likewise, one aspect of the present invention provides [5] the suction device equipped with an irrigation function according to one of points [1] to [4], wherein: the irrigation path internal connecting element comprises a closing valve push-out section and a closing valve retraction section; the closing valve comprises a closing section, an open side surface and an irrigation path internal connecting element contact section; the closing valve push-out section and the closing valve retraction section in the irrigation path internal connecting element are arranged such that the closing valve push-out section and the closing valve retraction section are spaced apart from each other; when the irrigation path internal connecting element moves to one side of the suction device body opposite a side of the suction device body equipped with the flexible tube, the closing valve ejection section of the irrigation path internal connection element comes into contact with the irrigation path internal connection contact section of the closing valve, the closing valve is pressed to the side of the suction device body opposite the side of the suction device body equipped with the flexible tube, thereby eliminating the closure of the irrigation path by the closing valve, and the open side surface of the closing valve is exposed in a part of the irrigation path on the side of the suction device body opposite the side of the suction device body equipped with the flexible tube, and the irrigation path is thereby connected, and when the irrigation path internal connecting element moves towards the side of the suction device body equipped with the flexible tube, the closing valve retraction section of the irrigation path internal connection element comes into contact with the irrigation path internal connection contact section of the closing valve, the closing valve is retracted to the side of the suction device body equipped with the flexible tube and the irrigation path is closed by the closing valve.

[0047] Likewise, one aspect of the present invention provides [6] the suction device equipped with an irrigation function according to one of points [1] to [5], wherein: the closing valve is pressed to the side of the suction device body from the outside of the suction device body by a repulsive force of an elastic body, during the linear movement of the irrigation path internal connecting element, if there is a space between the shut-off valve push-out section of the irrigation path internal connecting element and the irrigation path internal connecting element contact section of the shut-off valve, the shut-off valve continues to close the irrigation path.

[0048] Likewise, one aspect of the present invention provides [7] the suction device equipped with an irrigation function according to one of points [1] to [6], wherein: the rotary lever comprises a recessed section, an adjustment hole and a conduit connecting the rotary lever, the adjustment hole is located in the recessed section on an outer surface of the rotary lever, one end of the cable path is connected to the adjustment hole, and another end of the pipeline is connected to the suction path via a flexible pipe.

[0049] Likewise, one aspect of the present invention provides [8] the suction device equipped with an irrigation function according to [4], wherein: Each of the first rotary joint element and second rotary joint element has a rotary joint element body section and comprising a curved surface section arranged at each of the opposite ends of the connecting element body section, and based on a cross-section perpendicular to a longitudinal direction of the rotary joint element body section, a largest cross-section of each of the curved surface sections is larger than a largest cross-section of the rotary joint body section, and as viewed in the longitudinal direction of the rotary joint element body section, the largest cross-section of the rotary joint element body section is located in the largest cross-section of each of the curved surface sections.

[0050] Likewise, one aspect of the present invention provides [9] the suction device equipped with an irrigation function according to [1] or [4], wherein: the rotary valve comprises a hollow section, wherein a cavity is arranged in the rotary valve, and a vent hole that connects the cavity and an outside of the rotary valve, Neither the cavity nor the vent hole are connected to the hollow section in the rotary valve, and when the suction path and the flexible pipe are separated, and the vent hole in the suction path is exposed. Advantageous effects of the invention

[0051] As in prior art methods in which a prior art switching mechanism that controls whether a suction path and a flexible tube are connected or disconnected, and a prior art switching mechanism that controls whether an irrigation path and the flexible tube are connected or disconnected, are arranged in the same section, if fluid escapes from the prior art switching mechanism that controls whether the irrigation path and the flexible tube are connected or disconnected, the escaped fluid is continuously drawn into the suction path, resulting in a waste of a large quantity of the fluid required for, for example, brain surgery.

[0052] In the case of the suction device equipped with an irrigation function according to the present invention, a switching mechanism that controls whether the irrigation path and the flexible hose are connected or separated from each other, and a conversion mechanism that converts an opening / closing movement of the rotary lever into a linear movement along the longitudinal direction of the irrigation path, are not arranged in a section which is the same as a switching mechanism that controls whether the suction path and the flexible tube are connected or separated from each other.

[0053] Therefore, even if fluid leaks from the switching mechanism that controls whether the irrigation path and the flexible tube are connected or disconnected, it can be prevented that the leaked fluid is drawn directly into the suction path.

[0054] As with prior art methods, in the case of a structure that controls the connection and closure of a water-pressurized irrigation path by means of a rotary valve, or a structure that controls the connection and closure of a water-pressurized irrigation path by vertically moving a line between a suction path and the irrigation path via a piston valve, each of the movable elements must have a watertight structure.

[0055] However, if the waterproof structure is provided by improving the accuracy of the machining of each moving element and thereby maximally reducing any gap formed by the moving element, or if the waterproof structure is provided by arranging a water leakage prevention element around the moving elements, smooth operation of the moving elements will be impaired.

[0056] In such a case, it is extremely difficult for a surgeon to stop a rotary lever at any given position in order to fine-tune the suction and irrigation volume.

[0057] In the case of the suction device equipped with an irrigation function according to the present invention, the closing valve contained in the second switching mechanism, which controls the connection and closing of the irrigation path exposed to liquid pressure, is arranged upstream in the irrigation path, i.e. at a position on the side opposite the flexible tube in relation to the first switching mechanism and the conversion mechanism in the suction device body.

[0058] When the irrigation path is closed, the shut-off valve contained in the second switching mechanism blocks the flow of fluid to the first switching mechanism and to the conversion mechanism upstream in the irrigation path.

[0059] Thus, even if the irrigation path is closed, it can be prevented that the first switching mechanism and the conversion mechanism are exposed to fluid pressure.

[0060] Therefore, when the irrigation path is closed, leakage of liquid from the moving elements in the present invention can be prevented.

[0061] Likewise, in the case of the suction device equipped with an irrigation function according to the present invention, the irrigation path is connected to the suction path at a position downstream of each element of the group comprising the first switching mechanism and the conversion mechanism.

[0062] When fluid flows due to the connection between the irrigation path and the flexible tube, the fluid is conveyed outwards from one end of the flexible tube, thus reducing the effect of excessive fluid pressure on the first switching mechanism and the conversion mechanism located in the suction path, which prevents fluid from escaping from the first switching mechanism.

[0063] Subsequently, in the suction device equipped with an irrigation function according to the present invention, when the suction path and the flexible tube are brought into contact with each other and the irrigation path is closed by the closing valve, a connecting path is formed from the closing valve to the end of the flexible tube through the connecting section of the suction path.

[0064] Since the end of the flexible tube is connected to the atmosphere after the irrigation path is closed by the shut-off valve, essentially no fluid pressure acts on the conversion mechanism and the second switching mechanism that are in contact with the irrigation path, thus preventing fluid from escaping from the suction device body.

[0065] Subsequently, in the suction device equipped with an irrigation function according to the present invention, switching can be carried out during the linear movement of the irrigation path internal connecting element to cause the closing valve to be moved or stopped.

[0066] Even if the irrigation path internal connecting element performs a linear movement in the irrigation path according to a closing operation of the rotary lever, the closing valve can be held in a position where the irrigation path is closed until the suction path is closed. Brief description of the drawings [ Fig. 1] Fig. Figure 1 shows a schematic perspective view to describe a suction device 100 equipped with an irrigation function according to embodiment 1. [ Fig. 2] Fig. Figure 2 shows a schematic side view to describe the suction device 100 equipped with an irrigation function according to embodiment 1. [ Fig. 3] Fig. Figure 3 shows a schematic side view to describe the suction device 100 equipped with an irrigation function according to embodiment 1. [ Fig. 4] Fig. Figure 4 shows a schematic partial front view to describe the suction device 100 equipped with an irrigation function according to embodiment 1. [ Fig. 5] Fig. Figure 5 shows a schematic perspective rear view to describe the suction device 100 equipped with an irrigation function according to embodiment 1. [ Fig. 6] Fig. Figure 6 shows a schematic partial sectional view to describe a first switching mechanism that connects a suction path and a flexible tube. [ Fig. 7] Fig. Figure 7 shows a schematic partial sectional view to describe the first switching mechanism that separates a suction path and a flexible tube from each other. [ Fig. 8] Fig. Figure 8 shows a schematic perspective view illustrating a suction device body as viewed from the side equipped with the flexible tube. [ Fig. 9] Fig. Figure 9 shows a schematic partial view to describe a locking relationship between a first opening / closing connecting element, a first rotary connecting element and a rotary valve. [ Fig. 10] Fig. Figure 10 shows a schematic partial view to describe a locking relationship between the first opening / closing connecting element, the first rotary connecting element and the rotary valve. [ Fig. 11] Fig. Figure 11 shows a schematic partial sectional view to describe a second switching mechanism when an irrigation path and the flexible tube are separated. [ Fig. 12] Fig. Figure 12 shows a schematic partial sectional view to describe the second switching mechanism when the irrigation path and the flexible tube are connected. [ Fig. 13] Fig. Figure 13 shows a schematic perspective view illustrating a suction device body as viewed from the side opposite the side equipped with the flexible tube. [ Fig. 14] Fig. Figure 14 shows a schematic partial view to describe a locking relationship between a second opening / closing connecting element, a second rotary connecting element and a rotary drum. [ Fig. 15] Fig. Figure 15 shows a schematic partial view to describe a locking relationship between the second opening / closing connecting element, the second rotary connecting element and the rotary drum. [ Fig. 16] Fig. Figure 16 shows a schematic sectional view to describe a second switching mechanism when an irrigation path and a flexible tube are separated from each other in embodiment 2. [ Fig. 17] Fig. Figure 17 shows a schematic sectional view to describe the second switching mechanism when the irrigation path and the flexible tube are connected in embodiment 2. [ Fig. 18] Fig. Figure 18 shows a schematic perspective view of a rotary valve used in a suction device equipped with an irrigation function according to embodiment 3. [ Fig. 19] Fig. Figure 19 shows a schematic partial sectional view to describe a function of the rotary valve. [ Fig. 20] Fig. Figure 20 shows a schematic sectional view of a suction device equipped with an irrigation function according to a third prior art method. [ Fig. 21] Fig. Figure 21 shows a schematic sectional view of a suction device equipped with an irrigation function according to the third prior art method. Description of embodiments [Embodiment 1 of the invention]

[0067] An embodiment of the present invention is described below with reference to the drawings.

[0068] Fig. Figure 1 shows a schematic perspective view to describe a suction device 100 equipped with an irrigation function according to embodiment 1.

[0069] Fig. 2 and Fig. Figure 3 shows schematic side views to describe the suction device 100 equipped with an irrigation function according to embodiment 1.

[0070] In the suction device 100 equipped with an irrigation function according to embodiment 1 of the present invention, a rotary lever 20 is connected to a suction device body 10 by an opening / closing connection section 11, so that it can be opened or closed. Elastic repulsive means 15, such as torsion springs (see Fig. 5), are arranged between the suction device body 10 and the rotary lever 20 and the rotary lever 20 can be held in an open state by the elastic repulsive means 15.

[0071] Fig. 1 and Fig. Figures 2 show the rotary lever 20 in an open state and Fig. Figure 3 shows the rotary lever 20 closed by a process of applying an external force to the rotary lever 20, such as pressing the rotary lever 20 with a finger.

[0072] A flexible tube 30, attached at a proximal end 31 on the side of the suction device body 10 and comprising a distal end 32 for directing towards an operating site, is detachably connected to the suction device body 10 via a connecting tube 33.

[0073] The flexible tube 30 is hollow inside, which allows, for example, a liquid or gas to flow freely through its interior.

[0074] Furthermore, the flexible tube 30 can be freely bent and held in a specific shape resulting from the bending. Although at the distal end 32 of the in Fig. If an opening section is arranged on the flexible tube 30 shown in 1 to 3, the opening section can also be arranged on a side surface of the flexible tube 30.

[0075] Similarly, the flexible pipe 30 can be replaced, for example, by one with a large pipe diameter or one with a small pipe diameter, depending on the purpose.

[0076] In the suction device body 10, a recessed section 12 is arranged as a point on which a finger is placed when the suction device 100 equipped with an irrigation function is held.

[0077] The installation of the recessed section 12 makes it easy to hold the suction device 100 equipped with an irrigation function and thus facilitates holding the flexible tube 30 in a fixed position.

[0078] An irrigation tube 40 and a suction tube 50 are each connected to the suction device body 10.

[0079] Irrigation connection sections 40a, 40b for connecting a flexible irrigation tube (not shown) are arranged in the irrigation tube 40.

[0080] At least one type of liquid, including, for example, water, distilled water, sterilized water, saline and drug solution, can be introduced into the suction device body 10 through the flexible irrigation tube and the irrigation tube 40.

[0081] Examples of means for introducing the liquid to the suction device body 10 include means for holding a liquid container to which the flexible irrigation tube is connected, at a position higher than the suction device 100 equipped with an irrigation function, and means for conveying liquid over the flexible irrigation tube using, for example, a liquid conveying pump.

[0082] Likewise, 50 suction connection sections 50a, 50b are arranged in the suction pipe for connecting a flexible suction pipe (not shown).

[0083] Examples of means for equipping the suction device body 10 with a suction function include means for connecting a suction pump to the flexible suction tube.

[0084] A recessed section 22 comprising an adjustment hole 21 is arranged in the rotary lever 20. Furthermore, a hollow conduit is arranged in the rotary lever 20, connecting a conduit tube 23 and the adjustment hole 21.

[0085] The conduit pipe 23 is connected to a branch pipe 51 arranged in the suction pipe 50 by means of a flexible connecting pipe 52 made of a synthetic plastic.

[0086] If the rotary lever 20 is not pressed and the adjustment hole 21 is not closed by a finger, the adjustment hole 21 and the suction tube 50 are in contact, which allows a reduction of suction force on the side of the distal end 32 of the flexible tube 30.

[0087] Placing a finger on the recessed part 22 to close the adjustment hole 21, in turn, allows an increase in suction force on the side of the distal end 32 of the flexible tube 30.

[0088] Fig. Figure 4 shows a schematic partial front view to describe the suction device 100 equipped with an irrigation function according to embodiment 1. Figure 4 also shows a schematic partial front view to describe the suction device 100 equipped with an irrigation function according to embodiment 1. Fig. 5 a schematic perspective rear view to describe the suction device 100 equipped with an irrigation function according to embodiment 1.

[0089] Fig. Figure 4 shows a diagram of the suction device 100 equipped with an irrigation function as viewed from the side equipped with a flexible tube 30 and Fig. Figure 5 shows a diagram of the suction device 100 equipped with an irrigation function as seen from the side opposite the side equipped with a flexible tube 30.

[0090] A first opening / closing connecting element 60 and a second opening / closing connecting element 70 are each movably connected to the rotary lever 20.

[0091] When the rotary lever 20 is opened / closed, the first opening / closing connecting element 60 and the second opening / closing connecting element 70 each move vertically according to the degree of opening / closing of the rotary lever 20 as shown in Fig. Numbers 1 to 3 are shown.

[0092] In the rotary lever 20, projecting sections 25, each comprising an elongated hole 24, are arranged (see Fig. 2) The first opening / closing connecting element 60 is arranged such that it clamps a projecting section 25 from opposite sides. A screw 26 penetrates the first opening / closing connecting element 60 and the elongated hole 24, thereby movably connecting the first opening / closing connecting element 60 and the elongated hole 24 to each other.

[0093] The same applies to a structure of the second opening / closing connecting element 70 and the rotary lever 20.

[0094] As in Fig. Figure 5 shows the suction device body 10 and the rotary lever 20 movably connected to each other via a connecting long rotating shaft pin 14.

[0095] Connecting sections 13, 13 arranged in the suction device body 10 are received in respective groove sections 27, 27 of the rotary lever 20 when the rotary lever 20 is closed.

[0096] Fig. 6 and Fig. Figure 7 shows schematic partial sectional views to describe a first switching mechanism that performs a switching operation to connect or separate a suction path and the flexible tube.

[0097] Fig. Figure 8 shows a schematic perspective view illustrating the suction device body as viewed from the side equipped with the flexible tube.

[0098] A first switching mechanism 600 comprises a rotary valve 61. The rotary valve 61 includes a cylindrical hollow section 62 integrated therein.

[0099] A rotation of the rotary valve 61 allows the suction path 610 and the hollow section 62 to be connected to each other or separated from each other.

[0100] The rotary valve 61 can be rotatably inserted onto a hollow inner surface of a cavity 620 arranged in the suction device body 10 essentially without a gap between them.

[0101] “Essentially without a gap” here means that when the rotary valve 61 is inserted into the cavity 620, there is no contact interface between the rotary valve 61 and the cavity 620 (see Fig. 8) transmitted light is visible to the naked eye, but the rotary valve 61 is rotatable.

[0102] Preferably, part of an outer circumferential surface of the rotary valve 61 is in contact with the hollow inner surface of the cavity 620, and even better, the entire outer circumferential surface of the rotary valve 61 is in contact with the hollow inner surface of the cavity 620.

[0103] Rotating the rotary valve 61 in the cavity 620 allows the hollow section 62 of the rotary valve 61 and the suction path 610 to be connected to each other or separated from each other.

[0104] As in Fig. Figure 6 shows that when the rotary lever 20 is open, that is, when no external force acts on the rotary lever 20, the hollow section 62 of the first section 640 (see Fig. 8) rotary valve 61 arranged in the suction device body 10 in connection with the suction path 610.

[0105] The suction path 610 extends linearly through the suction device body 10 and the rotary valve 61 is arranged in the suction path 610.

[0106] When the rotary lever 20 is pressed, for example with a surgeon's finger, the first opening / closing connecting element 60 is pressed downwards. A first rotary connecting element 63 is movably connected to the first opening / closing connecting element 60.

[0107] Due to the downward pressure of the first opening / closing connecting element 60, the first rotary connecting element 63 moves. The movement is transferred from the first rotary connecting element 63 to the rotary valve 61, causing the rotary valve 61 to rotate and the hollow section 62 arranged in the rotary valve 61 to be closed.

[0108] When the force pressing the rotary lever 20 decreases, the rotary lever 20 and the suction device body 10 are repulsed by an action of the elastic repulsive means 15, such as torsion springs, (see Fig. 5) and the rotary valve 61 rotates in the opposite direction, thereby connecting the hollow section 62 arranged in the rotary valve 61 to the suction path 610.

[0109] Preferably, the hollow section 62 in the rotary valve 61 and the suction path 610 are arranged linearly, and respective sections in a longitudinal direction of the hollow section 62 and the suction path 610 are constant and coincide with each other in the longitudinal direction.

[0110] Preferably, when the hollow section 62 in the rotary valve 61 and the suction path 610 are completely connected, the hollow section 62 in the rotary valve 61 and the suction path 610 form a path without irregularities in the interior.

[0111] Since foreign particles such as bone fragments sucked in by the flexible tube 30 move smoothly through the path, a blockage of the inside of the suction path 610 by the foreign particles in the suction device 100 equipped with an irrigation function can be prevented.

[0112] Each of the respective cutting shapes in a direction perpendicular to the longitudinal direction of the hollow section 62 in the rotary valve 61 and in the suction path 610 is preferably formed by a gentle curve approximately a circle or an ellipse, preferably a circle.

[0113] As in Fig. Figure 8 shows that the suction path 610 is arranged linearly through the suction device body 10. The cavity 620 for inserting the rotary valve 61 is located at an intermediate position in the suction path 610.

[0114] The suction device body 10 has a first opening / closing connection element insertion hole 630 for inserting the first opening / closing connection element 60 from the top into Fig. 8 arranged.

[0115] Likewise, a first rotary connection element installation groove 631 for the movable receiving of the first rotary connection element 63 is arranged in the suction device body 10.

[0116] The cavity 620, the first opening / closing connecting element insertion hole 630 and the first opening / closing connecting element insertion groove 631 form the first section 640.

[0117] The first opening / closing connecting element 60 is inserted into the first section 640 such that it is in the vertical direction in Fig. 6 and Fig. 7 is movable. The first opening / closing connecting element 60 is movably connected to the first rotary connecting element 63. Likewise, the first rotary connecting element 63 is movably connected to the rotary valve 61.

[0118] Ring-shaped elastic bodies 64, 65, such as O-rings, are arranged on opposite sides of the rotary valve 61 (see Fig. 4) A cover body 66 (not shown) comprising a screw section is inserted from the outside into a screw groove 621 (see Fig. 8) arranged in cavity 620 screwed in.

[0119] As in Fig. Figure 4 shows the ring-shaped elastic bodies 64, 65, such as O-rings, arranged in an opening section formed in a step shape in the cavity 620, and even when the cover body 66 presses the ring-shaped elastic bodies 64, 65, such as O-rings, from the outside, the ring-shaped elastic bodies 64, 65 do not impede the rotation of the rotary valve 61.

[0120] Likewise, when fluid migrates through the suction path 610, the ring-shaped elastic bodies 64, 65, such as the O-rings, close the opposite sides of the rotary valve 61, which makes it possible to prevent the fluid from escaping from the first opening / closing connecting element insertion hole 630 or from the first rotary connecting element installation groove 631.

[0121] Fig. 9 and Fig. Figure 10 shows schematic partial views to describe a locking relationship between the first opening / closing connecting element, the first rotary connecting element and the rotary valve.

[0122] As in Fig. 9 and Fig. Figure 10 shows the first rotary connecting element 63 and the rotary valve 61 movably connected to each other at the position on the side of the first opening / closing connecting element 60 with respect to a connecting axis 60x between the first opening / closing connecting element 60 and the first rotary connecting element 63 and a central axis 61x of the rotary valve 61 (alternating long and short dashed line aa) connecting a straight line.

[0123] As previously described, because the first rotary connecting element 63 and the rotary valve 61 are located at a position on the side of the first opening / closing connecting element 60 with respect to the straight line connecting the axis 60x between the first opening / closing connecting element 60 and the first rotary connecting element 63 and the central axis 61x of the rotary valve, the vertical movement of the first opening / closing connecting element 60 is smoothly converted into a rotary movement of the rotary valve 61.

[0124] The first opening / closing connecting element 60 comprises an opening / closing connecting element body section 60c and curved surface sections 60a, 60b arranged at opposite ends of the opening / closing connecting element body section 60c.

[0125] Based on a cross-section perpendicular to a longitudinal direction of the opening / closing connection element body section 60c, that is, the vertical direction in Fig. 9 and Fig. 10, is a largest cross-section of each of the curved surface sections 60a, 60b larger than a largest cross-section of the opening / closing connecting element body section 60c.

[0126] If there are a large number of such cross-sections, the relevant largest cross-section is calculated on the basis of the area of ​​an inner surface of an outer perimeter connecting the large number of cross-sections, so that the outer perimeter is the shortest.

[0127] If there is a hollow section in the cross-section, the relevant largest cross-section is also calculated based on the area of ​​an inner surface of an outer circumference of the cross-section. The same applies to the following.

[0128] As observed in the longitudinal direction of the opening / closing connecting element body section 60c, the largest cross-section of the opening / closing connecting element body section 60c is located in each of the respective largest cross-sections of the curved surface sections 60a, 60b.

[0129] The arrangement of the curved surface sections 60a, 60b enables the first opening / closing connecting element 60 to move smoothly along the inside of the first opening / closing connecting element insertion hole 630, which is arranged in the suction device body 10.

[0130] Fig. 11 and Fig. Figure 12 shows schematic sectional views to describe a second switching mechanism that performs a switching operation to cause an irrigation path and a flexible tube to be separated from each other or connected to each other.

[0131] Fig. Figure 13 shows a schematic perspective view of the suction device body 10 as viewed from the side opposite the side equipped with the flexible tube.

[0132] A conversion mechanism used in the present invention comprises the second opening / closing connecting element 70, a rotary drum 71, a second rotary connecting element 73 and an irrigation path internal connecting element 74.

[0133] Likewise, the second switching mechanism used in the present invention comprises a closing valve 80.

[0134] The closing valve 80 comprises at least one closing section 81, open side surfaces 82 and an irrigation path internal connecting element contact section 83.

[0135] The closing valve 80 can rotate in a longitudinal direction (horizontal direction in Fig. 11 and Fig. 12) of an irrigation path 710 in the irrigation path 710 via a conversion mechanism that converts the opening / closing movement of the rotary lever 20 into a linear movement in the longitudinal direction of the irrigation path 710.

[0136] The movement of the closing section 81 of the closing valve 80 in the longitudinal direction of the irrigation path 710 in the irrigation path 710 enables a switching between connection and closure of the irrigation path 710.

[0137] As in Fig. Figure 11 shows that when the rotary lever 20 is open, i.e. when no external force acts on the rotary lever 20, the open side surfaces 82 of the closing valve 80 on the downstream side are received and the closing section 81 of the closing valve 80 and an annular elastic body 84, such as an O-ring, close the irrigation path 710.

[0138] The closing valve 80 is pressed from the side of the irrigation connection section 40a, 40b by an elastic repulsive element 90, of which a spring is shown as an example (see Fig. 1 to 3). The elastic repulsive element 90 allows the open side surfaces 82 of the closing valve 80 to be absorbed on the downstream side, which allows a state to be maintained in which the closing valve 80 closes the irrigation path 710.

[0139] When the rotary lever 20 is pressed, for example by a surgeon's finger, the in Fig. The second opening / closing connecting element 70 shown in Figure 12 is pressed downwards. The second rotary connecting element 73 is movably connected to the second opening / closing connecting element 70.

[0140] When the second opening / closing connecting element 70 is pressed downwards, the second rotary connecting element 73 moves. The movement is transferred from the second rotary connecting element 73 to the rotary drum 71, causing the rotary drum 71 to rotate.

[0141] The irrigation path internal connecting element 74 is movably connected to the rotating drum 71. When the rotating drum 71 is turned, the irrigation path internal connecting element 74 performs a linear movement along the longitudinal direction of the irrigation path 710.

[0142] The irrigation path internal connecting element 74 comprises a closing valve push-out section 74a and a closing valve retraction section 74b.

[0143] Due to the rotation of the rotary drum 71, the irrigation path internal connecting element 74 moves to the upstream side of the irrigation path 710, that is, to the side of the irrigation path 710 from which the liquid flows into the suction device body 10.

[0144] But even if the irrigation path internal connecting element 74 moves to the upstream side of the irrigation path 710, the closing section 81 of the closing valve 80 does not move directly to the upstream side of the irrigation path 710.

[0145] There is a gap between the closing valve push-out section 74a of the irrigation path internal connecting element 74 and the irrigation path internal connecting element contact section 83 of the closing valve 80. As long as the gap exists, the closing valve push-out section 74a of the irrigation path internal connecting element 74 and the irrigation path internal connecting element contact section 83 of the closing valve 80 are not in contact with each other and thus the closing valve 80 is kept closed.

[0146] When the closing valve ejection section 74a of the irrigation path internal connection element 74 and the irrigation path internal connection element contact section 83 of the closing valve 80 make contact with each other together with the movement of the irrigation path internal connection element 74 to the upstream side of the irrigation path 710, the closing valve ejection section 74a of the irrigation path internal connection element 74 pushes the irrigation path internal connection element contact section 83 of the closing valve 80 out from there.

[0147] When the irrigation path internal connecting element contact section 83 is pressed, the closing section 81 of the closing valve 80, wherein the closing section 81 closes the irrigation path 710, is moved away from a position at which the closing section 81 closes the irrigation path 710.

[0148] When the irrigation path inner connecting element contact section 83 is pressed further, the open side surfaces 82 of the closing valve 80, wherein the open side surfaces 82 were in close contact with the inside of the irrigation path 710 without a gap, are exposed in the irrigation path 710.

[0149] When the open side surfaces 82 of the closing valve 80 in the irrigation path 710 are exposed, the open side surfaces 82 are connected to both the upstream side and the downstream side with respect to the closing section 81 of the irrigation path 710.

[0150] Thus, fluid can flow from the upstream side of the irrigation path 710 to the downstream side of the irrigation path 710 through the open side surfaces 82 of the closing valve 80.

[0151] Using the procedure described above, the surgeon can start the irrigation via the flexible tube 30.

[0152] When the irrigation path internal connecting element contact section 83 is pressed further, the ratio of an exposed part of the open side surfaces 82 of the closing valve 80 in the irrigation path 710 increases, which allows the volume of the liquid flowing in the irrigation path 710 to increase.

[0153] When the force pressing the rotary lever 20 decreases, the rotary lever 20 and the suction device body 10 are repulsed by an action of the elastic repulsive means 15 (see Fig. 5), for example torsion springs, opened from each other, causing the rotating drum 71 to rotate in opposite directions.

[0154] When the rotating drum 71 rotates in the opposite direction, the closing section 81 of the closing valve 80 is pressed by the elastic repulsive element 90, such as a spring, and thus moves towards the downstream side of the irrigation path 710.

[0155] The ring-shaped elastic body 84, for example an O-ring made of rubber or silicone, is arranged on the closing section 81 of the closing valve 80.

[0156] When the inner side of the irrigation channel 710 is closed by the closing section 81 of the closing valve 80, the closing valve retraction section 74b of the irrigation channel inner connecting element 74 causes the irrigation channel inner connecting element contact section 83 of the closing valve 80 to be pulled, thereby deforming the annular elastic body 84. Here, the open side surfaces 82 of the closing valve 80 on the downstream side of the irrigation channel 710 are received, and the gap between the closing section 81 of the closing valve 80 and the irrigation channel 710 is thereby eliminated.

[0157] When the gap between the closing section 81 of the closing valve 80 and the irrigation path 710 has been eliminated, the fluid flowing into the suction device body 10 is completely blocked on the upstream side.

[0158] This allows the supply of liquid to the flexible tube 30 to be stopped. It also prevents liquid pressure from acting on the first switching mechanism and the conversion mechanism, located downstream of the closing section 81 of the closing valve 80.

[0159] A state-of-the-art suction device equipped with an irrigation function has a structure that shuts off the flow of liquid via a rotary valve, piston valve, or similar device. In this type of structure, liquid pressure acts directly on the moving parts, making it extremely difficult to achieve both smooth operation of the rotary valve, piston valve, or similar device and to prevent liquid leakage from any gap at the interface with the rotary or piston valve.

[0160] In the case of the suction device 100 equipped with an irrigation function according to embodiment 1, however, no liquid pressure acts on either the first switching mechanism or the conversion mechanism arranged downstream of the closing section 81 of the closing valve 80, which prevents liquid from escaping from a gap at an interface with the first switching mechanism and a gap at an interface with the conversion mechanism.

[0161] As previously described, even when the irrigation path internal connecting element 74 moves towards the upstream side of the irrigation path 710, the closing section 81 does not immediately begin to move. The closing section 81 continues to close the irrigation path 710 until the closing valve push-out section 74a of the irrigation path internal connecting element 74 and the irrigation path internal connecting element contact section 83 of the closing valve 80 come into contact with each other.

[0162] Adjusting the gap between the closing valve push-out section 74a of the irrigation path internal connecting element 74 and the irrigation path internal connecting element contact section 83 of the closing valve 80 enables control of the operation of the initial connection of the irrigation path 710 when closing the suction path 610 and the closing of the irrigation path 710 when bringing the suction path 610 into contact.

[0163] For example, the material of the suction device body 10 can be a metallic material, such as stainless steel, titanium, aluminum and any of its alloys, an organic material, such as engineering plastic or thermoset, or an inorganic material, such as ceramic.

[0164] From the perspective of functionality and durability, the material of the suction device body 10 is preferably a metal, or even better, stainless steel. The same applies to materials of parts other than the suction device body 10, with the exception of flexible parts.

[0165] Likewise, one material of the flexible tube 30 is preferably flexible stainless steel.

[0166] As in Fig. Figures 11 to 13 show that the irrigation path 710 is arranged parallel to the suction path 610 in the suction device body 10. The cavity 720 for inserting the rotary drum 71 is located at an intermediate position in the irrigation path 710.

[0167] The irrigation channel 710 is bent in an L-shape on the downstream side with respect to the cavity 720 (see reference numeral 710a in Fig. 11 and Fig. 12) and is connected to the suction path 610 via a connecting section 711.

[0168] A second opening / closing connecting element insertion hole 730 for inserting the second opening / closing connecting element 70 from the top into Fig. 11 and Fig. 12 is arranged in the suction device body 10.

[0169] Likewise, a second opening / closing connection element insertion groove 731 is arranged in the suction device body 10 for the movable receiving of the second rotary connection element 73.

[0170] The cavity 720, the second opening / closing connecting element insertion hole 730 and the second opening / closing connecting element insertion groove 731 form a second section 740.

[0171] The second opening / closing connecting element 70 is introduced in the second section 740 such that it is in the vertical direction in Fig. 14 is movable. The second opening / closing connecting element 70 is movably connected to the second rotary connecting element 73. Likewise, the second rotary connecting element 73 is movably connected to the rotary drum 71.

[0172] A ring-shaped elastic body 75, such as an O-ring, is arranged on the rotating drum 71. A cover body 76 (see Fig. 1 to 3), comprising a screw section, is screwed from the outside into a screw groove 721 arranged in the cavity 720.

[0173] Based on a plane perpendicular to the vertical direction in Fig. 11 and Fig. 12, that is, a plane perpendicular to a longitudinal direction of the second opening / closing connection element insertion hole 730, is a part of the irrigation path 710, wherein the part is parallel to the suction path 610, preferably on the lower side with respect to the suction path 610, i.e., the underside of the suction device body 10.

[0174] Due to the arrangement of the part of the irrigation path 710, where the part is parallel to the suction path 610, on the underside with respect to the suction path 610, the upper limit movement of the second opening / closing connection element 70 can be more strongly converted into a forward / backward movement of the closing valve 80 along the longitudinal direction of the irrigation path 710.

[0175] Each element of the group, comprising the first section 640 and the second section 740, can be formed by hollowing out the material, such as a metal, by, for example, a cutting process, and a partition section 800 is present between the cavities 620, 720 of the suction device body 10.

[0176] Thus, even if a leak of liquid occurs in the second section 740, which is in contact with the irrigation path 710, the partition section 800 can prevent the leaked liquid from being continuously drawn to the upstream side of the suction path 610.

[0177] Fig. 14 and Fig. Figure 15 shows schematic partial views to describe a locking relationship between the second opening / closing connecting element, the second rotary connecting element and the rotary drum.

[0178] As in Fig. 14 and Fig. Figure 15 shows the second rotary connecting element 73 and the rotary drum 71 movably connected to each other at a position on the side opposite the second opening / closing connecting element 70 with respect to a connecting axis 70x between the second opening / closing connecting element 70 and the second rotary connecting element 73 and a central axis 71x of the rotary drum 71 (alternating long and short dashed line bb).

[0179] As previously described, because the second rotary connecting element 73 and the rotary drum 71 are positioned on the side opposite the second opening / closing connecting element 70 with respect to the straight line connecting the axis 70x between the second opening / closing connecting element 70 and the second rotary connecting element 73 and the central axis 71x of the rotary drum 71, the vertical movement of the second opening / closing connecting element 70 is smoothly converted into a linear movement of the irrigation path inner connecting element 74.

[0180] The second opening / closing connecting element 70 comprises an opening / closing connecting element body section 70c and curved surface sections 70a, 70b arranged at opposite ends of the connecting element body section 70c.

[0181] Based on a cross-section perpendicular to a longitudinal direction of the opening / closing connection element body section 70c, that is, the vertical direction in Fig. 14 and Fig. 15, is a largest cross-section of each of the curved surface sections 70a, 70b larger than a largest cross-section of the opening / closing connecting element body section 70c.

[0182] As observed in the longitudinal direction of the opening / closing connecting element body section 70c, the largest cross-section of the opening / closing connecting element body section 70c is arranged in each of the respective largest cross-sections of the curved surface sections 70a, 70b.

[0183] The arrangement of the curved surface sections 70a, 70b enables the second opening / closing connecting element 70 to move smoothly along the inside of the second opening / closing connecting element insertion hole 730, which is arranged in the suction device body 10.

[0184] As previously described, the first section 640 and the second section 740 are connected to each other only via the connecting section 711 between the irrigation path 710 and the suction path 610 in the suction device body 10.

[0185] Likewise, the connecting section 711 is constantly connected to the atmosphere through the flexible tube 30.

[0186] Therefore, even if the irrigation path 710 is closed, it can be prevented that too much liquid pressure acts on the respective parts arranged in the first section 640 and second section 740.

[0187] This prevents fluid pressure from acting on the first switching mechanism and the conversion mechanism, located downstream of the closing section 81 of the closing valve 80.

[0188] The present invention makes it possible to achieve both the prevention of liquid leakage and the smooth switching between a suction operation and an irrigation operation of the suction device 100 equipped with an irrigation function. [Emphasis 2 of the invention]

[0189] The following describes embodiment 2 of the present invention, which is a modification of embodiment 1 of the present invention.

[0190] A suction device 110 equipped with an irrigation function according to embodiment 2 represents an improvement, such that a quantity of liquid supplied by a flexible tube 30 (see Fig. 1 to 3) together with the actuation of a rotary lever 20 increases.

[0191] Fig. 16 and Fig. Figure 17 shows schematic sectional views to describe an operating state of a second switching mechanism which performs a switching operation to cause a separation of an irrigation path and a flexible tube from each other or to connect them together in the suction device 110 equipped with an irrigation function according to embodiment 2.

[0192] As in the suction device 100 equipped with an irrigation function according to embodiment 1, a Fig. 16 and Fig. 17 The closing valve 80 shown is pressed from the side of the irrigation connection section 40a, 40b by an elastic repulsive means 90, wherein a spring is shown as an example thereof (see Fig. 1 to 3). The elastic repulsive element 90 allows the open side surfaces 82 of the closing valve 80 to be absorbed on the downstream side, which allows a state to be maintained in which the closing valve 80 closes the irrigation path 710.

[0193] When the rotary lever 20 is pressed by, for example, a surgeon's finger through a process as in the case of the suction device 100 equipped with an irrigation function according to the previously described embodiment 1, the open side surfaces 82 of the closing valve 80, wherein the open side surfaces 82 have been in close contact with the inside of the irrigation path 710 without a gap, are exposed in the irrigation path 710.

[0194] Thus, liquid can flow from the upstream side of the irrigation path 710 to the downstream side of the irrigation path 710 through the open side surfaces 82 of the closing valve 80. As in the previously described embodiment 1, the supply of liquid to the flexible tube 30 can be initiated.

[0195] In the suction device 110 equipped with an irrigation function according to embodiment 2, the open side surfaces 82 of the closing valve 80 are large in relation to the open side surfaces of the closing valve used in the previously described embodiment 1.

[0196] Likewise, based on a section perpendicular to a longitudinal direction of the irrigation path 710, the size of a liquid intake chamber section 91 in the irrigation path 710 of the suction device 110 equipped with an irrigation function is larger than that of the irrigation path 710.

[0197] Based on a plane perpendicular to a straight line along the longitudinal direction of the irrigation path 710, the liquid receiving chamber section 91 is arranged at a position on the side opposite the flexible tube 30 in relation to each element of the group comprising the rotary valve 61 contained in the first switching mechanism 600 and the rotary drum 71 contained in the conversion mechanism.

[0198] Additionally, the liquid intake chamber section 91 is large compared to a liquid intake chamber section in the irrigation path of the suction device 100 equipped with an irrigation function.

[0199] In the suction device 110 equipped with an irrigation function according to embodiment 2, a large quantity of liquid can flow through the open side surfaces 82 of the closing valve 80.

[0200] However, if the surgeon reduces the force with which the rotary lever 20 is pressed, as in the embodiment 1 described above, the supply of fluid to the flexible tube 30 can be stopped. [Emphasis 3 of the invention]

[0201] The following describes embodiment 3 according to the present invention, which is a modification of embodiment 1 of the present invention.

[0202] Fig. Figure 18 shows a schematic perspective view of a rotary valve 900 used in a suction device 120 equipped with an irrigation function according to embodiment 3.

[0203] The rotary valve 900 comprises a rotary valve body 910, rotary shafts 920, 930 and a rotary valve disc 940.

[0204] In the rotary valve body 910, a round cylindrical hollow section 62 extending through the rotary valve body 910 is arranged in a direction perpendicular to a central axis of the rotary shafts 920, 930. Gas, liquid, etc. can be drawn through the hollow section 62.

[0205] A cavity 950 is also arranged in the rotary valve body 910. The cavity 950 is arranged in the rotary valve body 910 and extends through an outer surface 911 and an inner surface 912 of the rotary valve body 910.

[0206] The cavity 950 only needs to be located in the rotary valve body 910 and the shape of the cavity 950 is not restricted.

[0207] The cavity 950 is arranged in the rotary valve body 910 to avoid the hollow section 62. Therefore, no liquid, gas, etc. can migrate between the cavity 950 and the hollow section 62.

[0208] In the rotary valve body 910, vent holes 960 are arranged in a direction perpendicular to the central axis of the rotary shafts 920, 930, leading from the outside of the rotary valve body 910 to the cavity 950.

[0209] In the Fig. Although the rotary valve 900 shown in Figure 18 has a large number of round cylindrical vent holes 960, only at least one of the vent holes 960 needs to lead to the cavity 950, and it is preferable that all vent holes 960 lead to the cavity 950.

[0210] Likewise, the shape of the vent holes 960 is not limited to a round cylindrical shape and can, for example, be a polygonal cylindrical shape or an elliptical cylindrical shape.

[0211] Fig. Figure 19 shows a schematic partial sectional view to describe a function of the rotary valve 900. As in Fig. 3 and Fig. 7 describes embodiment 1 Fig. 19 represents a state in which the rotary lever 20 is closed.

[0212] When the rotary lever 20 is closed, the hollow section 62 of the rotary valve 900 is closed and the hollow section 62 and the suction path 610 are not connected.

[0213] The vent holes 960 are exposed in the suction path 610. The inside of the suction path 610 is connected to the cavity 950 via the vent holes 960.

[0214] When the hollow section 62 and the suction path 610 are connected due to the rotation of the rotary valve 900, all vent holes 960 are closed.

[0215] Based on the area of ​​a part of the rotary valve 900, when the part is exposed in the suction path 610, compared to a part in which neither the vent holes 960 nor the cavity 950 are present, when the vent holes 960 and the cavity 950 are present, once the suction path 610 is vented, the surface area subject to venting is large.

[0216] This means that when the vent holes 960 and the cavity 950 are present, surfaces of the respective inner sides of the vent holes 960 and the cavity 950 are added compared to the case where neither the vent holes 960 nor the cavity 950 are present, and thus, even if the suction path 610 is vented, the force acting on each unit area of ​​the rotary valve body 910 is small.

[0217] If the vent holes 960 and the cavity 950 are present in the rotary valve 900, even if the suction path 610 is heavily vented, a force acting on the rotary valve 900 can be distributed, which allows the rotary valve 900 to rotate smoothly and thus enables the opening / closing movement of the rotary lever to be kept smooth. Commercial applicability

[0218] A suction device equipped with an irrigation function according to the present invention can be widely used as a medical instrument for use in the medical field, for example in brain surgery.

[0219] A suction device equipped with an irrigation function according to the present invention can also be used extensively for restoration work on archaeological material, such as antiques, layer analysis work, etc., as well as for cleaning and painting work that requires a cleaning and suction process. Reference symbol list 10, 202 Suction device body 11 Opening / closing connection section 12, 22 In-depth section 13 Connecting section 14 Connecting long-rotating shaft pin 15.90 elastic repellenant 20, 240 rotary levers 21 adjustment holes 23 conduit pipe 24 slotted holes 25th lead section 26 screw 27 Groove section 30 flexible pipe 31 proximal end 32 distal end 33 Connecting pipe 40 Irrigation tubes 40a, 40b Irrigation connection section 50 Intake pipe 50a, 50b Suction connection section 51 Branch pipe 52 flexible connecting pipe 60 first opening / closing connecting element 60a, 60b, 70a, 70b Curve surface section 60c, 70c Opening / closing connecting element body section 60x, 63x, 70x, 73x connecting axis 61,900 rotary valve 61x, 71x center axis 62 Hollow section 63 first rotary joint element 64, 65 ring-shaped elastic body 66, 76 Cover body 70 second opening / closing connecting element 71 Rotating drum 73 second rotary joint element 74 Irrigation path internal connecting element 74a Shut-off valve push-out section 74b Shut-off valve retraction section 80 shut-off valve 81 Locking section 82 open side surface 83 Irrigation path internal connecting element contact section 84 ring-shaped elastic bodies 90 elastic repellents 91 Fluid intake chamber section 100, 110, 120, 200 suction device equipped with an irrigation function 210 Suction path 212 Irrigation route 220 flexible pipe 222 distal end 230 rotary valve 232 flexible pipe 234 suction pressure fine adjustment hole 600 first shifting mechanism 610 Suction path 620, 720 cavity 621 Screw groove 630 first opening / closing connecting element insertion hole 631 first rotary joint installation groove 640 first section 710 Irrigation route 710a L-shaped curved section of the irrigation path 711 Connecting section 730 second opening / closing connecting element insertion hole 731 second rotary joint installation groove 740 second section 800 partition wall section 910 Rotary valve body 911 outdoor area 912 interior surface area 920, 930 rotary shaft 940 rotary valve disc 950 cavity 960 vent hole

Claims

[1] Suction device equipped with an irrigation function, comprising: a suction device body; a rotary lever arranged in such a way that it can be opened or closed in relation to the suction device body; a suction path arranged in the suction device body; an irrigation path arranged in the suction device body; a flexible tube attached to a proximal end of the suction device body, wherein a distal end of the flexible tube is directed towards a surgical site; a first switching mechanism comprising a rotary valve, wherein the first switching mechanism performs switching to cause the suction path and flexible tube to be connected or disconnected from each other; a second switching mechanism comprising a closing valve, wherein the second switching mechanism performs switching to cause the irrigation path and flexible tube to be connected or disconnected from each other; and a conversion mechanism which converts an opening / closing movement of the rotary lever into a linear movement along a longitudinal direction of the irrigation path by means of a rotary drum to move the closing valve, wherein: when the suction path and the flexible tube are connected by the first switching mechanism, the irrigation path is closed by the second switching mechanism and the conversion mechanism; when the suction path is closed by the first switching mechanism, the irrigation path and the flexible tube are connected by the second switching mechanism and the conversion mechanism; the first switching mechanism is arranged in a first section in the suction device body; the second switching mechanism and the conversion mechanism are arranged in a second section in the suction device body; a part contained in the conversion mechanism is arranged in the irrigation path, wherein the part performs a linear movement along the longitudinal direction of the irrigation path; the irrigation path is connected to the suction path at a position on the side of the flexible tube with respect to the rotary valve contained in the first switching mechanism and the rotary drum contained in the conversion mechanism on the basis of a plane perpendicular to a linear line along the longitudinal direction of the irrigation path; and The closing valve contained in the second switching mechanism is arranged at a position on one side opposite the flexible tube in relation to the rotary valve contained in the first switching mechanism and the rotary drum contained in the conversion mechanism, on the basis of the plane perpendicular to the linear line along the longitudinal direction of the irrigation path. [2] Suction device equipped with an irrigation function according to claim 1, wherein, when the irrigation path is closed by the second switching mechanism, a path for connection with the atmosphere is maintained for the conversion mechanism. [3] Suction device equipped with an irrigation function according to claim 1 or 2, wherein: the second switching mechanism includes a shut-off valve that closes the irrigation path, and an irrigation path internal connecting element that performs a linear movement along the longitudinal direction of the irrigation path with respect to the closing valve, together with an actuation of the conversion mechanism; and a mechanism that controls the movement and stopping of the closing valve during the linear movement of the irrigation path internal connecting element. [4] Suction device equipped with an irrigation function according to one of claims 1 to 3, comprising: a first opening / closing connecting element and a second opening / closing connecting element each movably connected to the rotary lever; a first rotary connecting element movably connected to the first opening / closing connecting element; a second rotary connecting element movably connected to the second opening / closing connecting element; a rotary valve movably connected to the first rotary connecting element; and a rotating drum movably connected to the second rotating connecting element; wherein a mechanism in which the irrigation path internal connecting element is movably connected to the rotating drum, together with the process of inserting the first opening / closing connecting element on the first section, the rotary valve rotates and thereby closes the suction path, together with the process of inserting the second opening / closing connecting element on the second section, the rotary drum rotates and thereby connects the irrigation path, and After the suction path is closed, the irrigation path is connected, and a mechanism in which together with the actuation of the first opening / closing connecting element to pull out the first section, the rotary valve rotates and thereby connects the suction path, together with the activation of the second opening / closing connecting element to pull out the second section, the rotary drum rotates and thereby closes the irrigation path, and After closing the irrigation path, the suction path will be connected and made available. [5] Suction device equipped with an irrigation function according to one of claims 1 to 4, wherein: the irrigation path internal connecting element comprises a closing valve push-out section and a closing valve retraction section; the closing valve comprises a closing section, an open side surface and an irrigation path internal connecting element contact section; the closing valve push-out section and the closing valve retraction section in the irrigation path internal connecting element are arranged such that the closing valve push-out section and the closing valve retraction section are spaced apart from each other; when the irrigation path internal connecting element moves to one side of the suction device body opposite a side of the suction device body equipped with the flexible tube, the closing valve ejection section of the irrigation path internal connection element comes into contact with the irrigation path internal connection contact section of the closing valve, the closing valve is pressed to the side of the suction device body opposite the side of the suction device body equipped with the flexible tube, thereby eliminating the closure of the irrigation path by the closing valve, and the open side surface of the closing valve is exposed in a part of the irrigation path on the side of the suction device body opposite the side of the suction device body equipped with the flexible tube, and the irrigation path is thereby connected, and when the irrigation path internal connecting element moves towards the side of the suction device body equipped with the flexible tube, the closing valve retraction section of the irrigation path internal connection element comes into contact with the irrigation path internal connection contact section of the closing valve, the closing valve is retracted to the side of the suction device body equipped with the flexible tube and the irrigation path is closed by the closing valve. [6] Suction device equipped with an irrigation function according to any one of claims 1 to 5, wherein: the closing valve is pressed to the side of the suction device body from the outside of the suction device body by a repulsive force of an elastic body, during the linear movement of the irrigation path internal connecting element, if there is a space between the shut-off valve push-out section of the irrigation path internal connecting element and the irrigation path internal connecting element contact section of the shut-off valve, the shut-off valve continues to close the irrigation path. [7] Suction device equipped with an irrigation function according to any one of claims 1 to 6, wherein: the rotary lever comprises a recessed section, an adjustment hole and a conduit connecting the rotary lever, the adjustment hole is located in the recessed section on an outer surface of the rotary lever, one end of the cable path is connected to the adjustment hole, and another end of the pipeline is connected to the suction path via a flexible pipe. [8] Suction device equipped with an irrigation function according to claim 4, wherein: Each of the first rotary joint element and second rotary joint element has a rotary joint element body section and comprising a curved surface section arranged at each of the opposite ends of the connecting element body section, and based on a cross-section perpendicular to a longitudinal direction of the rotary joint element body section, a largest cross-section of each of the curved surface sections is larger than a largest cross-section of the rotary joint body section, and as viewed in the longitudinal direction of the rotary joint element body section, the largest cross-section of the rotary joint element body section is located in the largest cross-section of each of the curved surface sections. [9] Suction device equipped with an irrigation function according to claim 1 or 4, wherein: the rotary valve comprises a hollow section, wherein a cavity is arranged in the rotary valve, and a vent hole that connects the cavity and an outside of the rotary valve, Neither the cavity nor the vent hole are connected to the hollow section in the rotary valve, and when the suction path and the flexible pipe are separated, and the vent hole in the suction path is exposed.

Images