Surgical flushing, suction and drainage assembly

Abstract

The utility model relates to a surgical flushing, suction and drainage assembly, which is characterized by comprising a handle, an aspiration branch having a cavity in the handle; the flushing tube is arranged on the suction tube in a sleeving mode, the flushing tube and the suction tube are spaced by a radial gap, the radial gap forms a part of the flushing branch, the suction branch is provided with a suction control device in the area of the handle, the suction control device is used for controlling opening and closing of suction operation, and the suction control device is provided with a suction control piston and a piston containing cavity. A piston receiving chamber is provided in the handle and intersects the cavity, the aspiration control piston being movable between its initial position, in which it is able to block the cavity to close the aspiration operation, and an activated position, in which it is able to release the cavity to open the aspiration operation. The device has the beneficial effect that the opening and closing of the suction operation can be simply realized according to the operation requirement by pressing the suction control piston.

Description

Technical Field

[0001] The utility model relates to a surgical flushing, suction and drainage component. Background Art

[0002] Currently, almost all surgical procedures require the use of sterile saline or sugar water to flush the surgical area or instruments. At the same time, almost all surgeries require the timely removal of bloody liquid or flushing water produced by the wound to clean the surgical field dirt, make the surgical field clear, and reduce infection.

[0003] Currently, there are three main methods of irrigation and suction used during surgical procedures in Chinese hospitals. The first is the traditional open irrigation and suction method, which has been used for a long time. A nurse opens a container of sterile saline or sugar solution, pours it into the container, then draws it out with a water balloon and hands it to the surgeon. Alternatively, a nurse scoops the solution from the container into a small bowl and hands it to the surgeon. This irrigation process presents several problems: contamination is easily introduced during the process, as the opening of the sterile saline bottle or bag can easily become contaminated. The water container is exposed to air for a long time (almost the entire surgery), increasing the risk of contamination. Hands and the outside of the container harbor bacteria, and operating over the basin violates aseptic principles. Furthermore, the procedure is inconvenient: the surgeon signals the need for water, and the nurse then fetches and passes it, wasting valuable surgical time. When suction is required, excess intraoperative fluid is removed with gauze or a suction cannula. Suction cannulae are typically reusable. After each surgical procedure, a nurse cleans the inside of the cannula with a cleansing rod, washing the interior and exterior, and then sterilizing it with high temperature and high pressure before reuse. Cleaning the inside of the suction device (tube) is a difficult problem, as it can lead to infection caused by incomplete cleaning of dirt and increases the workload of medical staff. Therefore, this open irrigation and suction method is not only prone to infection, but also cumbersome and time-consuming.

[0004] The second type is the pressure-regulated minimally invasive irrigation and suction tube, which has appeared on the market in recent years. This product changes the traditional water supply method by combining the irrigation and suction lines into a thin, curved stainless steel suction tube that can be inserted into the surgical wound. The other end of the irrigation line is connected to a bag of normal saline, and the other end of the suction line is connected to a negative pressure aspirator. With a simple handle button switch, the surgical wound can be irrigated and suctioned at any time, which is convenient to operate and shortens the operation time. However, a drawback of this device is that the irrigation and suction lines share a thin stainless steel suction tube. As a result, a small amount of body fluids that have been sucked away from the wound may remain on the inner wall of the shared stainless steel suction tube. During irrigation, this fluid is then flushed back into the surgical wound with normal saline, potentially exposing the patient to secondary infection. In addition, the irrigation line is relatively thick, the water volume is large, and adjustment is not easy, making it unsuitable for delicate minimally invasive surgery.

[0005] The third type is also one of several improved irrigation and suction devices that have appeared in recent years. Their irrigation and suction lines are set independently of each other, so there will be no problem of the sucked liquid being flushed back into the surgical wound. However, some models are reusable products, and the gaps in the product structure are difficult to clean. When repeatedly sterilized, the cleaning and sterilization are not thorough, which can easily lead to the risk of cross-infection. Other models are disposable, but the irrigation pipe is nested in the suction channel, which means that the cross-sectional space of the suction channel is partially occupied, making the suction channel prone to blockage. In addition, the switching function of the irrigation line of this model is circuit-controlled, and the irrigation line needs to be equipped with dedicated equipment, which makes the equipment used complicated and the operation cumbersome. It is also inconvenient to store the equipment in the operating room, and it is troublesome to carry it back and forth, affecting the convenience of the product.

[0006] Furthermore, for some abdominal surgeries requiring pneumoperitoneum, pneumoperitoneum is crucial for successful surgery. Artificial pneumoperitoneum must be established before surgery to separate the peritoneal wall from the internal organs. This expanded abdominal cavity facilitates surgery and prevents damage to organs when instruments enter the abdominal cavity. However, existing irrigation and aspirator systems can pose a problem: pressurized gas within the abdominal cavity, such as the abdominal cavity, can escape into the external environment during surgery. Utility Model Content

[0007] The purpose of the present invention is to provide a surgical irrigation, suction and drainage assembly, which can at least solve one of the above-mentioned problems.

[0008] To achieve the above-mentioned object, the present invention provides a surgical irrigation, suction and drainage assembly, wherein the surgical irrigation, suction and drainage assembly has a distal end that is farther away from an operator during use and a proximal end that is closer to the operator during use. The surgical irrigation, suction and drainage assembly is characterized in that it includes:

[0009] a handle capable of being held by an operator during surgery;

[0010] a suction branch circuit, which can be used to suction waste from a surgical area of ​​a human body during surgery, the suction branch circuit comprising a suction tube disposed distally of the handle and a suction connecting tube disposed proximally of the handle, and the suction branch circuit comprising a cavity in the handle, through which the suction tube and the suction connecting tube can be fluidically connected;

[0011] The irrigation branch can be used to irrigate a human surgical area during surgery. The irrigation branch has an irrigation tube disposed on the distal side of the handle and an irrigation connection tube disposed on the proximal side of the handle.

[0012] In which, the flushing tube is sleeved on the suction tube and the two are separated from each other by a radial gap, the radial gap forms a part of the flushing branch, and the suction branch has a suction control device in the area of ​​the handle for controlling the opening and closing of the suction operation, the suction control device has a suction control piston and a piston accommodating chamber for accommodating the suction control piston, the piston accommodating chamber is arranged in the handle and intersects with the cavity, the suction control piston can move between its initial position and an activated position, in the initial position, the suction control piston can block the cavity to close the suction operation, and in the activated position, the suction control piston can release the cavity to open the suction operation.

[0013] The surgical irrigation, suction and drainage assembly of this invention has the following benefits, including, but not limited to, ensuring that the internal space of the suction tube is not occupied by the irrigation tube, ensuring smooth suction operation and reducing the chance of blockage. A suction control device is provided on the handle, and the suction operation can be simply turned on and off according to surgical needs by pressing the suction control piston.

[0014] Advantageously, the suction control piston has a working part having a suction port and a blocking part adjacent to the suction port, wherein in the activated position, the cavity is fluidically connected via the suction port to open the suction operation, and in the initial position, the cavity is blocked by the blocking part to close the suction operation.

[0015] Advantageously, the suction control device has a circular sealing ring, which is arranged perpendicular to the longitudinal axis of the suction control piston on the side of the working part opposite to the blocking part with respect to the suction opening, so as to seal the outwardly open side of the cavity toward the piston accommodating chamber in an airtight manner relative to the external environment.

[0016] Advantageously, the suction control device has an oblique sealing ring mounted thereon, which is arranged on the blocking part at an angle to the longitudinal axis of the piston and can, in the initial position, airtightly isolate the two cavity parts of the cavity located respectively on the proximal and distal sides of the suction control piston from each other.

[0017] Advantageously, the oblique sealing ring has two mutually opposite transverse sections and two mutually opposite oblique sections in its installed state on the suction control piston, wherein the two transverse sections are arranged perpendicular to the piston longitudinal axis and the two oblique sections are arranged obliquely to the piston longitudinal axis.

[0018] Advantageously, the two transverse sections of the oblique sealing ring are respectively located in two accommodating chamber parts of the piston accommodating chamber which are separated by the cavity in the initial position.

[0019] Advantageously, a spring element is provided between the suction control piston and the piston receiving space, which spring element is able to hold the suction control piston in a starting position.

[0020] Advantageously, the suction control piston has a guide portion adjacent to the working portion, a stopper is fixed to the open end side of the piston accommodating chamber, and the guide portion can at least partially protrude from the piston accommodating chamber through an opening of the stopper.

[0021] Advantageously, a stop shoulder is formed at the junction of the working part and the guide part, with the stop shoulder the suction control piston comes to rest against the inner side of the stop cover in the initial position.

[0022] Advantageously, the guide portion has a non-circular cross section, and the opening of the blocking cover has a corresponding non-circular cross section, so that the guide portion can be guided in the opening of the blocking cover but cannot rotate relative to the blocking cover.

[0023] Advantageously, the suction control piston is provided with a press cap on the free end side of its guide portion, which press cap abuts against the outside of the stop cover in the activated position.

[0024] Advantageously, the suction tube is fixed at its proximal end in the handle via a suction tube fixing seat, and the suction tube fixing seat has a cylindrical through-hole assigned to the suction tube.

[0025] Advantageously, the suction tube fixing seat is provided with an external thread on its outer circumference, and the suction tube fixing seat is fixed in the accommodating cavity with an internal thread of the handle with its external thread.

[0026] Advantageously, the irrigation tube is fixed at its proximal end in the handle via an irrigation tube holder, which has a cylindrical through-hole assigned to the irrigation tube.

[0027] Advantageously, the flushing tube fixing seat is provided with an external thread on its outer circumference, and the flushing tube fixing seat is fixed in the accommodating cavity with the internal thread of the handle with its external thread.

[0028] Advantageously, the irrigation tube fixing seat is disposed distally of the suction tube fixing seat, and an annular cavity is formed therebetween in the axial direction, and the annular cavity is in fluid communication with the radial gap.

[0029] Advantageously, a sealing element is provided between the irrigation tube fixing seat and the handle, and between the suction tube fixing seat and the handle.

[0030] Advantageously, the flushing branch has a flushing hose, and the flushing hose is equipped with a flushing control device. The flushing control device is provided on the handle near the suction control device, and an operator can control the opening and closing of the flushing hose through the flushing control device.

[0031] Advantageously, the flush control device comprises a base, a button, and a spring mechanism arranged between the base and the button, wherein the base and the button cooperate with each other via the spring mechanism.

[0032] Advantageously, the base is configured as a cylindrical structure with a window, the button is configured as a cylindrical structure with a through portion, the button is partially embedded in the base, and the window and the through portion are aligned with each other and passed through by the flushing hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be explained in more detail below with reference to the accompanying drawings using embodiments, but the present invention is not limited to the embodiments described in the drawings and described in detail below.

[0034] Figure 1 This is a schematic front view of a surgical irrigation, suction and drainage assembly according to one embodiment of the present utility model;

[0035] Figure 2 yes Figure 1 A schematic rear view of the surgical irrigation, suction and drainage assembly in FIG, wherein the cover is removed;

[0036] Figure 3a yes Figure 1 A top view of a surgical irrigation, suction and drainage assembly in FIG, wherein the suction control device is not manipulated;

[0037] Figure 3b yes Figure 1 A top view of a surgical irrigation, suction and drainage assembly, wherein the suction control device is manipulated;

[0038] Figure 4a yes Figure 1 A partially cut-away bottom view of the surgical irrigation, suction and drainage assembly in FIG, wherein the suction control device is not manipulated;

[0039] Figure 4b yes Figure 1 A partially cut-away bottom view of the surgical irrigation, suction and drainage assembly in FIG, wherein the suction control device is manipulated;

[0040] Figure 5 yes Figure 4a An enlarged view of part II of the surgical irrigation, suction and drainage assembly;

[0041] Figure 6 The handle is Figure 1 A schematic enlarged partial cross-sectional view of a portion I in FIG;

[0042] Figure 7a yes Figure 1A perspective view of an irrigation control device of a surgical irrigation, suction and drainage assembly;

[0043] Figure 7b yes Figure 7a A side view of the flush control device;

[0044] Figure 7c yes Figure 7a Another side view of the flush control device;

[0045] Figure 8a yes Figure 7a A perspective view of a button of a flush control device in FIG.

[0046] Figure 8b yes Figure 8a A side view of the button in ;

[0047] Figure 8c yes Figure 8a Another side view of the button in;

[0048] Figure 9a yes Figure 7a A perspective view of a base of a flush control device in FIG.

[0049] Figure 9b yes Figure 9a A side view of the base;

[0050] Figure 9c yes Figure 9a Another side view of the base;

[0051] Figure 10a yes Figure 4a An enlarged view of part III in FIG;

[0052] Figure 10b yes Figure 4a An enlarged view of the local IV in FIG;

[0053] Figure 10c yes Figure 4a An enlarged view of the local V in ;

[0054] Figure 11 yes Figure 4b An enlarged view of the local VI in ;

[0055] Figure 12a is a side view of the suction control piston viewed from the proximal side to the distal side;

[0056] Figure 12b is another side view of the attraction control piston;

[0057] Figure 12c is a side view of the suction control piston viewed from the distal side to the proximal side;

[0058] Figure 12d is a perspective view of the suction control piston, where the two sealing rings are not shown;

[0059] Figure 12e is a perspective view of the suction control piston, showing two installed sealing rings;

[0060] Figure 13 It is a perspective view of an isolated oblique sealing ring in the installed state. DETAILED DESCRIPTION

[0061] An illustrative embodiment of the surgical irrigation, suction and drainage assembly 1 of the present invention is described below. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but all features of the actual systems, structures and devices are not described, such as well-known functions or structures are not described in detail, so as to avoid unnecessary details that make the present invention unclear. Of course, it should be understood that in any actual application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related restrictions need to be complied with, and these specific goals may vary depending on the actual application. In addition, it should be understood that although such specific implementation decisions are complex and time-consuming, they are routine tasks for ordinary technicians in this field who benefit from the present invention.

[0062] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of those terms and phrases by those skilled in the relevant art. No special definition of a term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art, is intended to be implied by consistent usage of a term or phrase herein. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly set forth in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0063] Unless the content requires otherwise, throughout the following description, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open and inclusive sense, that is, as in "including but not limited to".

[0064] Next, combine Figures 1 to 13The following is an exemplary description of a surgical irrigation, suction and drainage assembly 1 according to one embodiment of the present invention. The surgical irrigation, suction and drainage assembly 1 can be used for irrigation and suction during neurosurgery, brain and spinal cord surgery, ENT, orthopedics, head and neck surgery, and other specialized microsurgery procedures. It is particularly suitable for abdominal surgery requiring pneumoperitoneum. In addition, it can also be used for irrigation and suction during endoscopic surgery and various deep tissue structure surgeries, as well as irrigation and suction of surgical wounds rich in small blood vessels and nerves, to ensure a clear and clean surgical field.

[0065] The surgical irrigation, suction and drainage assembly 1 may have a distal end away from an operator during surgery and a proximal end close to the operator. The operator may be a doctor or other personnel who operates the irrigation, suction and drainage assembly 1 during surgery.

[0066] The irrigation, suction, and drainage assembly 1 may include a handle 2 for the operator to grasp during surgery. The handle 2 may be made of plastic to reduce costs. The handle 2 may have a streamlined finger-gripping surface to meet ergonomic requirements and enhance grip comfort. The handle 2 may also be partially provided with a soft rubber structure to enhance grip resistance.

[0067] The irrigation, suction and drainage component 1 may have a suction branch 3, which may be used to draw away dirt from the human surgical area or wound when necessary during surgery, such as bloody liquid or flushing water produced by the wound, so as to make the surgical field clear and reduce wound infection.

[0068] See also Figures 1 to 5 The suction branch 3 may include a suction tube 4 at its distal end, which can be inserted into the wound with its distal end to suck out waste during surgery. The suction tube 4 can be made of metal material, such as medical stainless steel, and can have a soft hardness so that it can be bent into a desired shape during surgery. The suction tube 4 can have a cylindrical tubular shape, and its distal end can be provided with an inner curling mouth or inner curling edge 5 (see Figure 5 ) to prevent it from cutting delicate tissues during surgery.

[0069] See also Figure 6 and Figure 10c, the suction tube 4 can be fixed in the handle 2 with its proximal end. Specifically, in the present embodiment, the suction tube 4 can be fixed in the handle 2 via the suction tube fixing seat 6. The suction tube fixing seat 6 can have a sleeve-shaped structure, and can have a cylindrical through hole provided for the suction tube 4 and an external thread 7 on its outer circumference. The suction tube 4 can be inserted into the through hole of the suction tube fixing seat 6 with its proximal end (for example, with an interference fit) and fixed by means of an adhesive (for example, epoxy resin) if necessary, and the proximal end side of the suction tube 4 may not protrude beyond the proximal end side of the suction tube fixing seat 6. The suction tube fixing seat 6 can be fixed in the accommodating cavity 9 of the handle 2 having an internal thread 8 with its external thread 7.

[0070] The suction branch 3 may include an elongated cylindrical cavity 10 provided in the handle 2 and defined by the peripheral wall of the handle 2. The cavity 10 may be provided proximal to the suction tube 4 and may be in fluid communication with the suction tube 4 at its distal end. A suction control device 11 (see FIG. 1 ) which will be described in detail below is provided on the wall of the handle 2 surrounding the cavity 10. Figure 10a and Figure 11 ), by operating the suction control device 11, the suction branch 3 and thus the suction process can be opened or closed.

[0071] See also Figures 1 to 5 , the suction branch 3 may include a suction connecting tube 12 arranged on the proximal side of the handle 2. The distal portion of the suction connecting tube 12 may be a soft and elastic medical rubber (silicone) tube, so that the handle 2 is comfortable to hold, without twisting the wrist or hurting the hand. The suction connecting tube 12 can be sleeved with its distal end on the hollow cylindrical protrusion (into which the cavity 10 extends) at the proximal end of the handle 2 and is in fluid communication with the cavity 10. Thus, the suction connecting tube 12 can be fluidically connected to the suction tube 4 via the cavity 10. The suction connecting tube 12 can be connected to a suction machine (not shown) for applying negative pressure via a three-way connector 13. When the suction operation is normally performed via the suction branch 3, the additional third interface 14 of the three-way connector 13 can be blocked by the plug 15 provided thereon to maintain the negative pressure in the suction branch 3. If the suction branch 3 is blocked by dirt and cannot function properly, the third port 14 can be used to connect another irrigation, suction, and drainage assembly 1 of the present invention (or a non-disposable irrigation, suction, and drainage device in the operating room) to establish a backup suction branch, allowing the surgery to continue without interruption. Simultaneously, the suction connecting tube 12 can be clamped with a flow-stop clamp 16 (e.g., a Robert clamp) to maintain negative pressure within the backup suction branch 3. At this point, the suction branch 3 can be cleared by a nurse using a cleansing rod.

[0072] The irrigation, suction and drainage assembly 1 may have an irrigation branch 17 , which may be used to irrigate the wound with irrigation fluid, such as sterile saline or sugar water, when necessary during surgery.

[0073] See also Figures 1 to 5 The irrigation branch 17 may include an irrigation tube 18 at its distal end. During surgery, the distal end of the irrigation tube 18 can be positioned close to or extended into the wound to irrigate the wound. The irrigation tube 18 can be made of a metal material, such as medical stainless steel, and can have a flexible hardness to allow for flexible bending into the desired shape during surgery. The irrigation tube 18 can have a cylindrical tubular shape, and its distal end can be rounded to prevent it from cutting delicate tissue during surgery. The diameter of the irrigation tube 18 can be larger than that of the suction tube 4. Thus, the irrigation tube 18 can be coaxially positioned, radially spaced, and positioned outside the suction tube 4, forming a radial gap 19. Thus, the irrigation tube 18 and the suction tube 4 can form a tube-in-tube structure, achieving a compact, integrated, and independent structure. Irrigation fluid can flow through the radial gap 19 between the irrigation tube 18 and the suction tube 4 and exit through the distal opening of the irrigation tube 18. The distal opening of the irrigation tube 18 can be arranged with a certain distance offset rearward or proximally relative to the distal opening 20 of the suction tube 4. This allows irrigation fluid to flow out of the distal opening 20 of the irrigation tube 18 in a jet-like manner and be guided toward the wound along the outer circumference of the exposed portion of the suction tube 4. Furthermore, this effectively prevents the irrigation fluid from being sucked back into the suction tube 4.

[0074] See also Figure 6 and Figure 10c , the irrigation tube 18 can be fixed in the handle 2 with its proximal end. Specifically, in the present embodiment, the irrigation tube 18 can be fixed in the handle 2 via an irrigation tube fixing seat 21. Similar to the suction tube fixing seat 6, the irrigation tube fixing seat 21 can have a sleeve-shaped structure, and can have a cylindrical through-hole provided for the irrigation tube 18 and an external thread 7 on its outer circumference. The irrigation tube 18 can be inserted into the through-hole of the irrigation tube fixing seat 21 with its proximal end (for example, with an interference fit) and fixed by means of an adhesive (for example, epoxy resin) if necessary, and the proximal end side of the irrigation tube 18 may not protrude beyond the proximal end side of the irrigation tube fixing seat 21. The irrigation tube fixing seat 21 can be fixed in the same accommodating cavity 9 with the internal thread 8 of the handle 2 with its external thread 7. The irrigation tube fixing seat 21 can be arranged distally to the suction tube fixing seat 6 and the two can be coaxially arranged (that is, the central longitudinal axes of the two coincide). An annular cavity 22 may be formed axially between the irrigation tube holder 21 and the suction tube holder 6. The annular cavity 22 may be surrounded by the proximal end of the irrigation tube holder 21, the distal end of the suction tube holder 6, the outer wall of the suction tube 4, and the internal thread 8 of the accommodating cavity 9. The annular cavity 22 may be in fluid communication with the radial gap 19 between the irrigation tube 18 and the suction tube 4.

[0075] A seal 23 (eg, a sealing ring) may be provided at the proximal end of the suction tube holder 6 between the suction tube holder 6 and the inner wall of the accommodating cavity 9 to fluidically seal the suction branch 3 relative to the annular cavity 22 and thus the irrigation branch 17 .

[0076] At the distal end of the irrigation tube holder 21 , another sealing element 50 (eg, a sealing ring) may be provided between the irrigation tube holder 21 and the inner wall of the accommodating chamber 9 to seal the annular cavity 22 and thus the irrigation branch 17 from the external environment.

[0077] See also Figure 6 The flushing branch 17 may include a two-way bent joint 24, the distal end of which may be plugged into a radial through hole 25 of the handle 2. The radial through hole 25 may be provided on the wall of the handle 2 surrounding the receiving portion, radially outside the annular cavity 22. Thus, the two-way bent joint 24 may be in fluid communication with the annular cavity 22 via the radial through hole 25. The proximal end of the two-way bent joint 24 may be plugged into a flushing hose 26 ( Figure 2 and Figure 10a ), the flushing hose 26 can extend in parallel with the elongated cavity 10 in the handle 2. The flushing hose 26 can be equipped with a flushing control device 27 that controls its opening and closing, which will be described in detail below. The flushing hose 26 can be connected to the two-way bent joint 24 with its distal end.

[0078] Therefore, see Figure 10a and Figure 11 A chamber 41 may be provided on the side of the handle 2, and the chamber 41 may be open to one side and may be covered by a cover 40 from the side. Figure 2 was removed and Figure 10a and Figure 11 The two-way bent joint 24 , the flushing hose 26 , the flushing control device 27 and the two-way straight joint 28 described below can be disposed together in the chamber 41 and covered by the cover 40 .

[0079] See also Figures 1 to 4b The flushing branch 17 may include a flushing connection pipe 29 disposed on the proximal side of the handle 2. The flushing connection pipe 29 may be a plastic pipe, such as a PVC pipe. The flushing connection pipe 29 may be connected to the proximal end of the flushing hose 26 via a two-way straight connector 28 at its distal end (see FIG. Figure 2 and Figure 10b). The flushing connecting tube 29 can be connected to the plastic needle 30 at its proximal end, and the plastic needle 30 can be plugged into an infusion bag (not shown) filled with flushing fluid. If necessary, an infusion pressurized bag (not shown) can be placed on the outside of the infusion bag to provide sufficient flushing pressure. A flow rate regulator 31 can be provided on the flushing connecting tube 29 for steplessly adjusting the flow rate of the flushing fluid, which is suitable for use in, for example, delicate minimally invasive surgery. It is also conceivable that a flow stop clamp (such as a Robert clamp) can be used instead of a flow rate regulator to clamp the flushing connecting tube 29.

[0080] Next, combine Figures 7a to 9c as well as Figure 10a and Figure 11 The structure and working principle of the flushing control device 27 according to one embodiment of the present invention are described.

[0081] See also Figure 10a The irrigation control device 27 can be arranged on the handle 2 and can be operated by the operator from the same side of the handle 2 as the suction control device 11. For example, both can be operated by the thumb.

[0082] See also Figures 9a to 9c The flush control device 27 may include a base 32 having a cylindrical sidewall and a bottom wall that closes the sidewall at one end and is open at the other end. The sidewall may have two opposed windows 33 through which the flush hose 26 can pass through the base 32. The bottom wall may have a cylindrical protrusion 34 formed centrally thereon.

[0083] See also Figures 8a to 8c The flushing control device 27 may include a button 35 having a cylindrical body 42. The diameter of the body 42 may be smaller than the inner diameter of the base 32, so that the body 42 can be embedded in the base 32 and reciprocate axially relative to the base 32. The body 42 may have a through-portion 36 extending transversely to its longitudinal axis, through which the flushing hose 26 can pass through the base 32. The button 35 may have a downwardly extending cylindrical protrusion 37 at one end and a flat pressing portion 38 on the opposite side, which can be pressed by an operator.

[0084] See also Figures 7a to 7cThe flushing control device 27 can have a spring mechanism 39, for example, which is configured as a compression spring, and the base 32 and the button 35 can cooperate with each other by means of the spring mechanism 39. The button 35 can be partially embedded in the base 32, and the protrusion 37 of the button 35 and the protrusion 34 of the base 32 can be oriented toward each other. The spring mechanism 39 can be located between the base 32 and the button 35, and can be sleeved with one end on the protrusion 34 of the base 32 and with the other end on the protrusion 37 of the button 35. The through-portion 36 of the button 35 can be oriented with its two opposite openings toward the two windows 33 of the base 32, respectively, so that the flushing hose 26 can pass through the window 33 of the base 32 and the through-portion 36 of the button 35 at the same time (see Figure 10a and Figure 11 The spring mechanism 39 can be configured such that, when the button 35 is not pressed, the spring mechanism 39 uses its return force to squeeze the button 35 away from the base 32, so that the flushing hose 26 is clamped by the shear force applied to the flushing hose 26 by the window 33 of the base 32 and the bottom of the through-portion 36 of the button 35, thereby blocking the flow of flushing liquid therein; and when the button 35 is pressed, the button 35 can overcome the return force of the spring mechanism 39 and move toward the base 32 until the flushing hose 26 is no longer subjected to the shear force and is released, thereby releasing the flow of flushing liquid therein.

[0085] See also Figure 10a and Figure 11 When the flush control device 27 is installed on the handle 2, the base 32 can be embedded and fixed in the cavity 41 of the handle 2, and the button 35 can be positioned toward the side of the handle 2 facing away from the cover 40 and can pass through the side wall of the handle 2 and partially extend laterally from the handle 2. As described above, the operator can release the flushing liquid in the flushing hose 26 by pressing the button 35 from above, and can stop the flow of the flushing liquid by releasing the button 35.

[0086] In some embodiments, the flush control device 27 may be further configured such that the button 35 is configured as a cylindrical structure with one end open and the other end forming a pressing portion 38, and the button 35 may be sleeved with its open opening on the base 32 having a smaller diameter, and a spring mechanism 39 is also provided between the base 32 and the button 35. In some embodiments, the flush control device 27 may be further configured such that the base 32 is not separate from the cover 40 but is instead a part of the cover 40, that is, the base 32 is formed by the internal structure of the cover 40.

[0087] Next, combine Figures 10a to 13 The structure and working principle of the suction control device 11 according to one embodiment of the present invention are described.

[0088] Figure 10a Show Figure 4a 1 is an enlarged view of a part III in FIG, wherein the suction control device 11 is in its initial state where it is not operated, in which the suction branch 3 is blocked to prohibit the suction operation. Figure 11 Show Figure 4b VI is an enlarged view of a part in FIG, wherein the suction control device 11 is in its activated state of being manipulated, in which the suction branch 3 is released to allow the suction operation.

[0089] The suction control device 11 may be provided in the area of ​​the handle 2 of the irrigation, suction and drainage assembly 1 , specifically, at a certain distance distal to the irrigation control device 27 .

[0090] See also Figure 10a 、 Figure 11 and Figures 12a to 12e The suction control device 11 may include a suction control piston 110, whose longitudinal axis may extend parallel to the longitudinal axis of the button 35 of the flush control device 27. The handle 2 may include a piston-receiving chamber 100 for accommodating and guiding the suction control piston 110. The piston-receiving chamber 100 has a substantially cylindrical cavity structure that intersects the elongated cavity 10 transversely, in this case perpendicularly, to form an intersection space 130. This intersection space 130 can divide the elongated cavity 10 into opposing distal and proximal cavity portions, and also divide the piston-receiving chamber 100 into two opposing piston-receiving chamber portions. The piston-receiving chamber portion on one side (the lower side in the plane of the paper) of the piston-receiving chamber 100 is closed at the end, while the piston-receiving chamber portion on the other side (the upper side in the plane of the paper) is open at the end. The suction control piston 110 can be introduced into the piston-receiving chamber 100 from the top and accommodated therein.

[0091] The attraction control piston 110 can have a protrusion 111 at the lower end, and the piston accommodating chamber 100 can have a corresponding protrusion 112 at the lower side. The two ends of the spring element 113 (here is a coil spring) can be respectively mounted on the protrusion 111 and the corresponding protrusion 112, so that the spring element 113 can always squeeze the attraction control piston 110 upward based on its return force.

[0092] See also Figures 12a to 12e The suction control piston 110 may have a substantially cylindrical working portion 120. The working portion 120 may have a cylindrical suction opening 114 extending transversely to the longitudinal axis of the piston through the working portion 120. Figure 11In the activated state of the suction control device 11 shown, the suction port 114 can connect the two cavity parts of the elongated cavity 10 to each other, thereby allowing the waste in the human body to be sucked out of the body through the suction port 114 under the suction action of the external suction machine. The working part 120 can have a cylindrical blocking part 121 adjacent to the suction port 114 on one side (the lower side in the drawing plane), Figure 10a In the initial state of the suction control device 11 shown, the blocking portion 121 can be located in the intersection space 130 or the elongated cavity 10 and block the fluid therein to prohibit the suction operation.

[0093] The working portion 120 may be provided with an oblique sealing ring 119 on its blocking portion 121. The blocking portion 121 may be provided with an oblique receiving groove 122 along its circumference for accommodating and defining the oblique sealing ring 119. In its relaxed state, the oblique sealing ring 119 may have a circular shape when not mounted on the suction control piston 110. However, after being stretched and installed and embedded in the oblique receiving groove 122, the oblique sealing ring 119 takes on the shape shown in the figure.

[0094] See also Figure 13 When the oblique sealing ring 119 is in the tensioned or installed state on the suction control piston 110, the oblique sealing ring 119 can have two pairs of four sealing sections, namely, two opposite transverse sections 125 or arc sections extending along the circumference of the suction control piston 110 or its blocking portion 121 or perpendicular to the piston longitudinal axis, and two opposite oblique sections 126 or spiral sections extending along the circumference and longitudinal direction of the suction control piston 110 or its blocking portion 121 or oblique to the piston longitudinal axis. The two oblique sections 126 are respectively connected to the two transverse sections 125 and can be constructed as one piece, thereby forming a sealing ring 110. Figure 13 The inclined section 126 can form an angle of 25° to 45° with the axial direction of the suction control piston 110 (in the case of lateral projection). Figures 12a to 12e Correspondingly, the oblique receiving groove 122 can also have two opposite transverse segments or arc segments that are offset in the axial direction of the piston and two opposite inclined segments or spiral segments, thereby limiting or forming the above-mentioned shape of the oblique receiving groove 122 in the installed state on the suction control piston 110.

[0095] exist Figure 10aIn the illustrated initial state of the suction control device 11, the oblique sealing ring 119 is positioned so that its two transverse sections 125 can respectively rest against the inner walls of the two piston-accommodating chamber portions. In this state, the oblique sealing ring 119 hermetically seals the distal cavity portion against the proximal cavity portion and the open-ended piston-accommodating chamber portion, preventing gas in the human abdominal cavity from escaping to the external environment around the circumference of the blocking portion 121. As previously mentioned, the undesirable escape of intra-abdominal gas is disadvantageous because this gas is essential for laparoscopic surgical procedures.

[0096] The working portion 120 may be provided with a circular sealing ring 118 on a side thereof remote from the blocking portion 121. To this end, the working portion 120 may be provided with a corresponding circular receiving groove 123 along its circumference for accommodating the circular sealing ring 118. Thus, the circular sealing ring 118 and the angled sealing ring 119 are respectively arranged on different sides of the suction opening 114. The circular sealing ring 118 may have a circular shape and be arranged along the circumference of the working portion 120 such that the suction opening 114 is hermetically sealed upwardly or outwardly from the external environment.

[0097] exist Figure 11 When the suction control device 11 is in the activated state, the circular sealing ring 119 is abutted against the inner wall of the piston accommodating chamber part that is open outward to seal the elongated cavity 10 airtightly to the outside, preventing the negative pressure generated by the suction machine (which is usually in the turned-on state during the operation) in the elongated cavity 10 from leaking, that is, preventing the atmosphere in the external environment from entering the elongated cavity 10 from the piston accommodating chamber part that is open outward.

[0098] The suction control piston 110 can have a guide portion 124 that is approximately cylindrical and has a smaller diameter than the working portion 120. The guide portion 124 can have two opposing arcuate surfaces 134 extending longitudinally and two opposing flat surfaces 135. A cover 115 is mounted on the open end of the piston accommodating chamber 100 and can be removably fixed to the end of the piston accommodating chamber 100, for example, using a snap-fit ​​connection. The guide portion 124 can extend from the piston accommodating chamber 100 to the external environment through an opening in the cover 115. The cross-section of the opening of the cover 115 can correspond to the cross-section of the guide portion 124. As a result, the cover 115 can, on the one hand, axially guide the guide portion 124 with its opening and, on the other hand, prevent the guide portion 124, or the entire suction control piston 110, from rotating.

[0099] The suction control piston 110 can form an annular shoulder 116 between the working portion 120 and the guide portion 124. Figure 10aIn the initial state of the suction control device 11 shown, the suction control piston 110 can be stopped on the stop cover 115 with its annular boss 116 under the action of the return force of the spring element 113 and limited on one side axially, so that the two transverse sections 125 of the oblique sealing ring 119 can be exactly abutted against the inner walls of the two piston accommodating chamber parts respectively to prevent the gas in the abdominal cavity from escaping from here to the external environment.

[0100] The suction control piston 110 can be provided with a pressure cap 117 on the free end of the guide part 124, for example, with an interference fit, so that the operator can press it so that the suction control piston 110 is moved from the initial position to the activation position while overcoming the return force of the spring element 113. When the pressure cap 117 moves to the stop on the baffle 115, the suction control piston 110 reaches its activation position at the same time, and is now limited on the other axial side. At this time, the suction branch 3 is connected to the suction port 114 and the suction operation begins, and the oblique sealing ring 119 and the circular sealing ring 118 can just rest on the inner walls of the two piston accommodating chamber parts respectively. Therefore, the circular sealing ring 118 can always isolate the cavity 10 or the suction branch 3 from the external environment in an airtight manner. After the suction operation is completed, the pressing of the pressure cap 117 can be stopped, so that the suction control piston 110 can be returned to its position by the return force of the spring element 113. Figure 10a In the initial position.

[0101] Next, the operation process of the surgical irrigation, suction and drainage assembly 1 of the present invention is described, which includes the suction operation process and the irrigation operation process:

[0102] Suction operation: Use your finger (thumb) to keep pressing the pressure cap 117 of the suction control device 11 to push the suction control piston 110 into and hold it in its activated position, thereby connecting the suction branch 3 and suctioning waste from the human body. When your finger releases the pressure cap 117, the spring element 113 uses its return force to force the suction control piston 110 back to its initial position, thereby blocking suction.

[0103] Flushing operation process: Use your finger (thumb) to keep pressing the button 35 of the flushing control device 27, so that the flushing hose 26 opens, allowing the flushing liquid to flow through the flushing hose 26 and out of the radial gap 19 between the flushing tube 18 and the suction tube 4, thereby realizing the flushing function; when the finger releases the button 35, the spring mechanism 39 uses its return force to prompt the flushing control device 27 to clamp the flushing hose 26, thereby stopping flushing.

[0104] Therefore, the main technical effects that can be achieved by the surgical irrigation, suction and drainage assembly 1 of the present invention include, but are not limited to: there are no other structural components in the suction branch 3 except the suction control piston 110, so it is unobstructed and the probability of blockage is reduced; the internal space of the suction tube 4 is not occupied by the irrigation tube 18, the suction operation is smooth, and the probability of blockage is reduced; the irrigation branch 17 and the suction branch 3 are completely independent of each other in terms of fluid, and there is no possibility that the sucked liquid will be flushed back into the surgical wound and increase the probability of secondary infection; the flow rate of the irrigation liquid can be achieved by pre-setting the size of the radial gap 19 between the suction tube 4 and the irrigation tube 18 according to the needs of the operation, and will not cause any impact on the suction function; a suction control device 11 is provided on the handle 2, and the suction operation can be simply opened and closed by pressing the suction control piston 110; an oblique sealing ring 119 is provided on the suction control piston 110, which ensures that the gas necessary for the operation in the human body, especially in the abdominal cavity, does not leak into the external environment when the suction operation is not performed, which is particularly beneficial for laparoscopic surgery with pneumoperitoneum requirements. The handle 2 is provided with a flushing control device 27 with a mechanical spring mechanism 39, which can realize instant connection and closing of the flushing hose 26 and then the flushing branch 17 without adding additional special equipment, and the operation is easy, fast and reliable. The sharp edges of the front end surfaces of the suction tube 4 and the flushing tube 18 are rounded and blunted to prevent tissue cutting. The suction tube 4 is also provided with an inner curling edge 5 to prevent scratching of tissue. Because the diameter or volume of the part of the flushing and suction drainage component 1 that enters the human body is smaller, more instruments can be accommodated in the surgical wound channel during surgery. The flushing and suction drainage component 1 is fully sealed and sterilely connected, reducing the chance of infection. The finger kneading surface of the handle 2 is streamlined and fully meets the requirements of ergonomics. Most of the components of the flushing and suction drainage component 1 are made of plastic, which is low-cost. The flushing and suction drainage component 1 is disposable, eliminating the risk of cross infection caused by reuse.

[0105] Finally, it should be pointed out that the above embodiments are only used to understand and explain the present invention and do not limit the scope of protection of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and all such modifications do not depart from the scope of protection of the present invention.

Claims

1. A surgical irrigation, suction and drainage assembly, comprising a distal end further away from an operator when in use and a proximal end closer to the operator when in use, wherein: The surgical irrigation, suction and drainage assembly comprises: a handle capable of being held by an operator during surgery; a suction branch circuit, which can be used to suction waste from a surgical area of ​​a human body during surgery, the suction branch circuit comprising a suction tube disposed distally of the handle and a suction connecting tube disposed proximally of the handle, and the suction branch circuit comprising a cavity in the handle, through which the suction tube and the suction connecting tube can be fluidically connected; The irrigation branch can be used to irrigate a human surgical area during surgery. The irrigation branch has an irrigation tube disposed on the distal side of the handle and an irrigation connection tube disposed on the proximal side of the handle. In which, the flushing tube is sleeved on the suction tube and the two are separated from each other by a radial gap, the radial gap forms a part of the flushing branch, and the suction branch has a suction control device in the area of ​​the handle for controlling the opening and closing of the suction operation, the suction control device has a suction control piston and a piston accommodating chamber for accommodating the suction control piston, the piston accommodating chamber is arranged in the handle and intersects with the cavity, the suction control piston can move between its initial position and an activated position, in the initial position, the suction control piston can block the cavity to close the suction operation, and in the activated position, the suction control piston can release the cavity to open the suction operation.

2. The surgical irrigation, suction and drainage assembly according to claim 1, characterized in that: The suction control piston has a working part, which has a suction port and a blocking part adjacent to the suction port. In the activated position, the cavity is fluidically connected via the suction port to open the suction operation, and in the initial position, the cavity is blocked by the blocking part to close the suction operation.

3. The surgical irrigation, suction and drainage assembly according to claim 2, characterized in that: The suction control device has a circular sealing ring, which is arranged perpendicular to the longitudinal axis of the suction control piston on the side of the working part opposite to the blocking part with respect to the suction opening to seal the outwardly open side of the cavity toward the piston accommodating chamber in an airtight manner relative to the external environment.

4. The surgical irrigation, suction and drainage assembly according to claim 2, characterized in that: The suction control device has an oblique sealing ring installed thereon, which is arranged on the blocking part at an angle to the longitudinal axis of the piston and can, in the initial position, airtightly isolate the two cavity parts of the cavity located on the proximal and distal sides of the suction control piston respectively from each other.

5. The surgical irrigation, suction and drainage assembly according to claim 4, characterized in that: The oblique sealing ring, in its installed state on the suction control piston, has two mutually opposite transverse sections and two mutually opposite oblique sections, wherein the two transverse sections are arranged perpendicular to the piston longitudinal axis and the two oblique sections are arranged obliquely to the piston longitudinal axis.

6. The surgical irrigation, suction and drainage assembly according to claim 5, characterized in that: In the initial position, the two transverse sections of the oblique sealing ring are respectively located in two accommodating chamber parts of the piston accommodating chamber separated by the cavity.

7. The surgical irrigation, suction and drainage assembly according to claim 1, characterized in that: A spring element is provided between the suction control piston and the piston receiving space, which spring element is able to hold the suction control piston in a starting position.

8. The surgical irrigation, suction and drainage assembly according to claim 2, characterized in that: The suction control piston has a guide portion adjacent to the working portion. A stopper is fixed to the open end side of the piston accommodating chamber, and the guide portion can at least partially protrude from the piston accommodating chamber through an opening of the stopper.

9. The surgical irrigation, suction and drainage assembly according to claim 8, characterized in that: A stop shoulder is formed at the junction of the working part and the guide part, with which the suction control piston abuts against the inner side of the stop cover in the initial position.

10. The surgical irrigation, suction and drainage assembly according to claim 8, characterized in that: The guide portion has a non-circular cross section, and the opening of the blocking cover has a corresponding non-circular cross section, so that the guide portion can be guided in the opening of the blocking cover but will not rotate relative to the blocking cover.

11. The surgical irrigation, suction and drainage assembly according to claim 8, characterized in that: The suction control piston is provided with a pressure cap on the free end side of its guide portion, which pressure cap abuts against the outside of the stop cover in the activated position.

12. The surgical irrigation, suction and drainage assembly according to claim 1, characterized in that: The suction tube is fixed at its proximal end in the handle via a suction tube fixing seat, and the suction tube fixing seat has a cylindrical through-hole assigned to the suction tube.

13. The surgical irrigation, suction and drainage assembly according to claim 12, characterized in that: The suction tube fixing seat is provided with external threads on its outer circumference, and the suction tube fixing seat is fixed in the accommodating cavity with internal threads of the handle with its external threads.

14. The surgical irrigation, suction and drainage assembly according to claim 12, wherein: The proximal end of the irrigation tube is fixed in the handle via an irrigation tube fixing seat, which has a cylindrical through-hole assigned to the irrigation tube.

15. The surgical irrigation, suction and drainage assembly according to claim 14, characterized in that: The flushing tube fixing seat is provided with external threads on its outer circumference, and the flushing tube fixing seat is fixed in the accommodating cavity with internal threads of the handle with its external threads.

16. The surgical irrigation, suction and drainage assembly according to claim 14, characterized in that: The irrigation tube fixing seat is disposed at the distal end of the suction tube fixing seat, and a distance is spaced apart therebetween in the axial direction to form an annular cavity, wherein the annular cavity is in fluid communication with the radial gap.

17. The surgical irrigation, suction and drainage assembly according to claim 16, characterized in that: A sealing element is respectively provided between the flushing tube fixing seat and the handle, and between the suction tube fixing seat and the handle.

18. The surgical irrigation, suction and drainage assembly according to claim 1, characterized in that: The flushing branch has a flushing hose, and the flushing hose is equipped with a flushing control device. The flushing control device is arranged on the handle near the suction control device, and an operator can control the opening and closing of the flushing hose through the flushing control device.

19. The surgical irrigation, suction and drainage assembly according to claim 18, characterized in that: The flush control device comprises a base, a button, and a spring mechanism arranged between the base and the button, wherein the base and the button cooperate with each other via the spring mechanism.

20. The surgical irrigation, suction and drainage assembly according to claim 19, wherein: The base is configured as a cylindrical structure with a window, and the button is configured as a cylindrical structure with a through portion. The button is partially embedded in the base, and the window and the through portion are aligned with each other and are penetrated by a flushing hose.

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