Surgical irrigation-aspiration drainage apparatus

Abstract

This utility model relates to a surgical irrigation and aspiration drainage device, characterized in that it enables suction of waste from the surgical area and irrigation of the surgical area during surgery. The device comprises: a main handle for performing both suction and irrigation operations; a secondary handle for performing at least the suction operation; and at least one tubing assembly, comprising a suction tube, an irrigation tube nested within the suction tube, and a tubing retainer fixedly connected to both the suction and irrigation tubes. The tubing assembly can be connected to both the main handle and the secondary handle via its retainer. Advantages include: the two handles are interchangeable, and the tubing assemblies for both are universal, reducing the total number of tubing assemblies required.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a surgical irrigation and aspiration drainage device. Background Technology

[0002] Currently, almost all surgical procedures require rinsing the surgical area or instruments with sterile saline or sugar water. At the same time, it is almost always necessary to promptly aspirate the bloody fluid or rinsing water produced by the wound to clean the surgical field, make the surgical field clear, and reduce infection.

[0003] Some existing irrigation suction devices only have one handle, and there is no spare handle available for emergency use in case of blockage during the procedure. Utility Model Content

[0004] The purpose of this invention is to provide a surgical irrigation and aspiration drainage device that can solve at least one of the problems mentioned above.

[0005] To achieve the above objectives, this utility model proposes a surgical irrigation and aspiration drainage device, characterized in that it enables the suction of contaminants from the surgical area and the irrigation of the surgical area during surgery.

[0006] The surgical irrigation and aspiration drainage device includes:

[0007] The main handle enables the suction and rinsing operations to be performed.

[0008] A secondary handle, through which at least the suction operation can be performed; and

[0009] At least one tube assembly, the tube assembly including a suction tube, a flushing tube nested with the suction tube, and a tube holder fixedly connected to the suction tube and the flushing tube, wherein the tube assembly can be connected not only to the main handle but also to the auxiliary handle via its tube holder.

[0010] The beneficial effects of the tubing assembly for surgical irrigation and aspiration drainage instruments of this invention are, but not limited to, that the two handles can be used interchangeably for the same function (e.g., the suction function, which is prone to blockage). For example, if the suction branch of one of the main and auxiliary handles is blocked and cannot perform suction operation, the suction branch of the other handle can be used immediately to perform suction operation without affecting the surgical process. In addition, since the tubing assembly for the main and auxiliary handles is interchangeable, this reduces the total number of tubing assemblies required, and eliminates the need to spend extra time identifying which tubing assembly is compatible with which handle during the operation, saving valuable surgical time.

[0011] Advantageously, the tube assembly can be detachably connected not only to the main handle but also to the auxiliary handle via its tube mounting base.

[0012] Advantageously, the tube assembly can be threadedly connected to the main handle and the auxiliary handle via its tube mounting base, or the tube assembly can be plugged into the main handle and the auxiliary handle via its tube mounting base.

[0013] Advantageously, the main handle is connected to a first suction connection tube proximally, and the auxiliary handle is connected to a second suction connection tube proximally. The first and second suction connection tubes can be connected to a common tee connector. When suction is performed using the main handle, the main handle is in fluid communication with the suction machine through the first suction connection tube and the tee connector, while when suction is performed using the auxiliary handle, the auxiliary handle is in fluid communication with the suction machine through the second suction connection tube and the tee connector.

[0014] Advantageously, the main handle has a first pipe assembly connector for connecting the pipe assembly, and the auxiliary handle has a second pipe assembly connector for connecting the pipe assembly, the first pipe assembly connector and the second pipe assembly connector being constructed identically at least at the connection points for connecting to the pipe assembly.

[0015] Advantageously, the suction operation can be performed via the secondary handle, but the rinsing operation cannot be performed.

[0016] Advantageously, the secondary handle is connected to a second suction connection tube on its proximal side, the second suction connection tube being connected to the secondary handle via a bent tailpipe connector, such that the second suction connection tube extends off-axis from the secondary handle in the section near the secondary handle.

[0017] Advantageously, the secondary handle has a tapered proximal connection portion, which allows it to be inserted into the tailpipe connector with an interference fit, and the insertion portion is coated with adhesive.

[0018] Advantageously, the tailpipe connector is provided with one of a positioning block and a positioning groove, and the auxiliary handle is provided with the other of a positioning block and a positioning groove. When the tailpipe connector is connected to the auxiliary handle, the positioning block is inserted into the positioning groove for circumferential orientation.

[0019] Advantageously, the secondary handle has two opposing finger pinching surfaces, one of which is configured as a concave arc surface and has a pressure adjustment hole for adjusting the suction pressure, while the other finger pinching surface is configured as a convex arc surface.

[0020] Advantageously, the tube holder has a suction tube holder section and a flushing tube holder section, the tube holder being fixed to the suction tube via the suction tube holder section and to the flushing tube via the flushing tube holder section, the tube holder also having a liquid inlet section disposed between the suction tube holder section and the flushing tube holder section, the liquid inlet section having a radially extending liquid inlet hole, during the flushing operation, the flushing fluid can enter the radially inner side of the liquid inlet section from the radially outer side of the liquid inlet section by means of the liquid inlet hole.

[0021] Advantageously, the flushing tube is sleeved on the suction tube, and the flushing tube fixing section is located on the far side of the suction tube fixing section. During the flushing operation, the flushing fluid can enter the inlet space formed by the inner surface of the inlet section and the outer surface of the suction tube from the radially outer side of the inlet section via the inlet hole. The inlet space is in fluid communication with the radial gap between the suction tube and the flushing tube.

[0022] Advantageously, the tube holder has an external thread on its outer periphery distal to the inlet hole, and the main handle and the auxiliary handle have internal threads that match the external thread, so that the tube assembly can be threaded to both the main handle and the auxiliary handle via its tube holder.

[0023] Advantageously, the tube holder has a proximal sealing ring on its outer periphery near the inlet hole, and a distal sealing ring on its outer periphery far from the external thread.

[0024] Advantageously, when the pipe assembly is threaded to the main handle or the auxiliary handle, the proximal sealing ring and the distal sealing ring are located on the proximal and distal sides of the internal thread of the main handle or the auxiliary handle, respectively.

[0025] Advantageously, the surgical irrigation and aspiration drainage device includes two, three, or more tubular assemblies. Attached Figure Description

[0026] The present invention will now be explained in more detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the embodiments described in the drawings and detailed below. The drawings are as follows:

[0027] Figure 1a This is a schematic side view of a surgical irrigation and aspiration drainage device according to one embodiment of the present invention;

[0028] Figure 1b yes Figure 1a A schematic side view of a surgical irrigation and aspiration drainage device, in which the main handle and the auxiliary handle are partially dissected;

[0029] Figure 1cyes Figure 1a A schematic top view of a surgical irrigation and aspiration drainage instrument, wherein the main handle is partially dissected at the water control device;

[0030] Figure 2a yes Figure 1a A schematic diagram of the tubing assembly of a surgical irrigation and aspiration drainage instrument.

[0031] Figure 2b yes Figure 2a A schematic diagram of the tube assembly, which is partially segmented at the proximal end;

[0032] Figure 3a yes Figure 2b A schematic enlarged view of part III of the pipe assembly;

[0033] Figure 3b yes Figure 2a A schematic perspective view of the tube mounting bracket of the tube assembly in the diagram;

[0034] Figure 4a yes Figure 2a A schematic diagram of the suction tube of the tube assembly being partially segmented at the distal end.

[0035] Figure 4b yes Figure 4a A schematic enlarged view of the segmented IV portion of the suction tube;

[0036] Figure 5a yes Figure 2a A schematic diagram showing the flushing tube of the tube assembly being partially split at the distal end.

[0037] Figure 5b yes Figure 5a A schematic enlarged view of the segmented V-shaped part of the suction tube in the diagram;

[0038] Figure 6a yes Figure 1b A schematic enlarged view of local area I of the surgical irrigation and aspiration drainage instrument;

[0039] Figure 6b yes Figure 1b A schematic enlarged view of the local area II of the surgical irrigation and aspiration drainage instrument;

[0040] Figure 7a yes Figure 1a A schematic side view of the main handle of a surgical irrigation and aspiration drainage instrument.

[0041] Figure 7b yes Figure 7a A schematic bottom view of the main handle, with the cover and water control device removed;

[0042] Figure 7c yes Figure 7b A schematic cross-sectional view of the main handle at the cutting plane HH;

[0043] Figure 7d yes Figure 7a A schematic 3D view of the main handle;

[0044] Figure 8 Is Figure 1c A schematic enlarged view of the water control device of a surgical irrigation and aspiration drainage instrument;

[0045] Figure 9a This is a three-dimensional view of the water control device of the surgical irrigation and aspiration drainage instrument in Figure 1;

[0046] Figure 9b yes Figure 9a A side view of the water control device in the middle;

[0047] Figure 9c yes Figure 9a Another view of the water control device in the middle;

[0048] Figure 10a yes Figure 9a A 3D view of the buttons on the water control device;

[0049] Figure 10b yes Figure 10a A side view of the button in the image;

[0050] Figure 10c yes Figure 10a The other side view of the button;

[0051] Figure 11a yes Figure 9a A perspective view of the base of the water control device in the middle;

[0052] Figure 11b yes Figure 11a A side view of the base;

[0053] Figure 11c yes Figure 11a Another view of the base;

[0054] Figure 12a This is a side view of the secondary handle of the surgical irrigation and aspiration drainage instrument in Figure 1;

[0055] Figure 12b yes Figure 12a Another side view of the secondary handle;

[0056] Figure 12c yes Figure 12a A longitudinal sectional view of the secondary handle in the middle;

[0057] Figure 13aThis is a side view of the tail tube connector of the surgical irrigation and aspiration drainage instrument in Figure 1, which is connected to the auxiliary handle.

[0058] Figure 13b yes Figure 13a Top view of the tailpipe connector; and

[0059] Figure 13c yes Figure 13a The longitudinal section view of the tailpipe connector. Detailed Implementation

[0060] The following describes an illustrative embodiment of the surgical irrigation and aspiration drainage device 1 and its tubing assembly 2 of this invention. In this specification, various systems, structures, and devices are schematically depicted in the accompanying drawings for illustrative purposes only, and not all features of actual systems, structures, and devices are described. For example, well-known functions or structures are not described in detail to avoid unnecessary detail that could obscure the invention. It should be understood that in any practical 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 limitations need to be followed. These specific goals may vary depending on the practical application. Furthermore, it should be understood that while such implementation decisions are complex and time-consuming, they are routine tasks for those skilled in the art who will benefit from this invention.

[0061] The terms and phrases used herein should be understood and interpreted in accordance with the understanding of those skilled in the art. The consistent use of terms or phrases herein is not intended to imply a specific definition, i.e., a definition different from the common and conventional meaning understood by those skilled in the art. For terms or phrases intended to have a specific meaning, i.e., a meaning different from that understood by those skilled in the art, such specific definition will be explicitly listed in the specification, giving the specific definition of the term or phrase directly and unambiguously.

[0062] Unless otherwise required by the content, throughout the following description, the word “including” and its variations, such as “comprising” and “having”, will be interpreted in an open-ended, inclusive sense, that is, as “including but not limited to”.

[0063] The following description, with reference to the accompanying drawings, exemplarily illustrates one embodiment of the surgical irrigation, aspiration, and drainage device 1 according to the present invention. The surgical irrigation, aspiration, and drainage device 1 is applicable to irrigation and aspiration during neurosurgical craniocerebral, spinal cord, and spinal surgery, otolaryngology, orthopedics, head and neck surgery, and other specialized microsurgical procedures. It is also applicable to irrigation and aspiration during endoscopic surgery and various deep tissue structure surgeries, as well as irrigation and aspiration of surgical wounds rich in small blood vessels and nerves, to ensure a clear and clean surgical field in minimally invasive surgery.

[0064] See Figures 1a to 1c The surgical irrigation and aspiration drainage device 1 may have a distal / distal end that is away from the operator during surgery and a proximal / proximal end that is close to the operator. The operator may be a physician or other personnel who operate the irrigation and aspiration drainage device 1 during surgery.

[0065] See Figures 1a to 2b The flushing and aspiration drainage device 1 may have a tube assembly 2 at the distal end, which may be, for example, detachable so that it can be replaced with a tube assembly 2 of a different size during the operation.

[0066] See Figure 2a , Figure 2b , Figure 4a and Figure 4b The tube assembly 2 may include a suction tube 3, which, during surgery, can be inserted into the wound at its distal end to suction out waste. The suction tube 3 may be made of a metallic material, such as medical-grade stainless steel, and may have both flexibility and rigidity to allow it to be bent into the desired shape during surgery. The suction tube 3 may have a cylindrical tubular shape, and its distal end may have an inwardly rolled opening or inwardly rolled edge 5 (see...). Figure 4b This is to prevent it from cutting the body's weak tissues during surgery.

[0067] See Figure 2a , Figure 2b , Figure 5a and Figure 5b The tube assembly 2 may include an irrigation tube 4, which, during surgery, can be positioned near or inserted into the wound at its distal end to irrigate the wound. The irrigation tube 4 may be made of a metallic material, such as medical-grade stainless steel, and may possess both flexibility and rigidity to allow for easy bending into desired shapes during surgery. The irrigation tube 4 may have a cylindrical tubular shape, and its distal end may have a rounded opening 401 to prevent it from cutting thin tissues during surgery. The diameter of the irrigation tube 4 may be larger than the diameter of the suction tube 3, thereby allowing the irrigation tube 4 to be fitted, for example, coaxially and radially spaced outside the suction tube 3, forming a radial gap 6 (see...). Figure 3a and Figure 6a Therefore, the irrigation tube 4 and the suction tube 3 can form a tube-and-tube structure, achieving a compact integration while remaining independent of each other. The irrigation fluid can flow through the radial gap 6 between the irrigation tube 4 and the suction tube 3 and exit from the distal opening of the irrigation tube 4. The irrigation tube 4 can be arranged with its distal opening offset backward or proximally relative to the distal opening of the suction tube 3 by a certain distance. Thus, the irrigation fluid can flow out from the distal opening of the irrigation tube 4 in a jet-like manner and can be guided towards the wound along the outer periphery of the exposed portion of the suction tube 3. In addition, it can effectively prevent the irrigation fluid from being aspirated back by the suction tube 3.

[0068] See Figure 2a , Figure 2b and Figure 3a , Figure 3b The tube assembly 2 may also have a hollow, one-piece or composite tube holder 7, which is integrally molded, for example, by injection molding. The tube holder 7 is used not only to fix the suction tube 3, but also to fix the flushing tube 4. For this purpose, the tube holder 7 may have a proximal suction tube holder section 8 for fixing the suction tube 3 and a distal flushing tube holder section 9 for fixing the flushing tube 4.

[0069] See Figure 3a The suction tube fixing section 8 may have a multi-step structure centered on its inner surface, which surrounds cylindrical suction tube fixing spaces of different diameters provided for the suction tube 3. The suction tube 3 may extend from its distal end through the suction tube fixing space of the suction tube fixing section 8 and be fixed in the suction tube fixing space by means of an adhesive (e.g., AB glue).

[0070] Therefore, the suction tube fixing space can successively include, from proximal to distal end: a truncated cone-shaped flared opening 10; a first cylindrical space 11 adjacent to the flared opening 10; a second cylindrical space 12 adjacent to the first cylindrical space 11 and with a diameter smaller than it; and a third cylindrical space 13 adjacent to the second cylindrical space 12 and with a diameter smaller than it. The outer diameter of the suction tube 3 can be slightly smaller than the diameter of the second cylindrical space 12 and the diameter of the third cylindrical space 13. See also... Figure 3a The suction tube 3 can be inserted through the second cylindrical space 12 and the third cylindrical space 13.

[0071] An adhesive reservoir 14 is formed between the outer surface of the suction tube 3 and the inner surface of the suction tube fixing section 8 that defines the first cylindrical space 11. Adhesive can be easily injected into the adhesive reservoir 14 through the flared end 10, for example, when the suction tube fixing section 8 is placed vertically upward, so as to glue the suction tube 3 and the suction tube fixing section 8 together. The second cylindrical space 12 is mainly responsible for radially constraining the suction tube 3 when it is installed.

[0072] The third cylindrical space 13 can be surrounded by a suction tube axial limiting step 15 specifically designed therein. Here, the suction tube axial limiting step 15 can be used to define the axial position of the suction tube 3; for this purpose, see [reference needed]. Figure 3a and Figure 4aA surface structure 16, such as knurling or textured, can be provided on the proximal outer circumferential surface of the suction tube 3 to cooperate with the axial limiting step 15 of the suction tube. This surface structure 16 protrudes radially outward from the outer circumferential surface of the suction tube 3. The surface structure 16 can increase the frictional force in case of potential displacement or rotation, and increase the connection between the suction tube 3 and the suction tube fixing seat section 8. This surface structure 16 is provided on the entire annular outer circumferential surface of the suction tube 3. The outer diameter of the surface structure 16 is designed to be smaller than the diameter of the second cylindrical space 12, but larger than the diameter of the third cylindrical space 13, so that, for example, when the suction tube 3 is inserted from top to bottom into the suction tube fixing space of the suction tube fixing seat section 8 with the suction tube fixing seat section 8 placed vertically upward, the suction tube 3 can be stopped by its surface structure 16 against the step surface of the axial limiting step 15 of the suction tube. Figure 3a (The middle section is on the left side of the step). This facilitates the subsequent injection of adhesive into the space where the suction tube is fixed.

[0073] To facilitate understanding of the relative dimensions mentioned above, the following example is provided: Assuming the outer diameter of the suction tube 3 is 3mm, the diameter of the first cylindrical space 11 can be set to 3.8mm, the diameter of the second cylindrical space 12 can be set to 3.3mm, the diameter of the surface structure 16 can be set to 3.2mm, and the diameter of the third cylindrical space 13 can be set to 3.1mm or 3.05mm. This ensures that the portion of the suction tube without the surface structure 16 can pass through, but the surface structure 16 cannot pass through. It should be understood that the above dimensions are merely illustrative and not restrictive.

[0074] Furthermore, the suction tube fixing section 8 does not have external threads 23 on its outer circumferential surface, but it has an annular groove 18 at its proximal end for accommodating the radial sealing ring 17. Thus, the sealing ring 17 can be disassembled and installed together with the tube fixing seat 7, thereby facilitating the overall replacement of the tube assembly 2.

[0075] See Figure 3a and Figure 3bOn the distal side of the suction tube holder section 8, the tube holder 7 may have a liquid inlet section 19, which allows flushing fluid to enter the liquid inlet space 20 formed by the inner surface of the liquid inlet section 19 and the outer surface of the suction tube 3 from the outside of the tube holder 7. For this purpose, the liquid inlet section 19 has a radially extending liquid inlet hole 21 immediately following the axial limiting step 15 of the suction tube, through which flushing fluid can enter the liquid inlet space 20 inside the tube holder 7 from the outside of the tube holder 7 via the liquid inlet hole 21. Two radially opposed liquid inlets 21 are shown here, but other numbers and arrangements of liquid inlets 21 are also conceivable. Here, the liquid inlets 21 are elliptical, but other shapes such as circular and square are also conceivable. Furthermore, the tube holder 7 has an annularly extending guide groove 22 on its outer periphery, which extends through and intersects the liquid inlet hole 21, allowing flushing fluid to be guided to the liquid inlet hole 21 and enter the liquid inlet space 20 from the liquid inlet hole 21.

[0076] Based on the presence of the inlet hole 21 (whose diameter is typically small), the combined use of the surface structure 16 of the suction tube 3 and the axial limiting step 15 of the suction tube fixing section 8, in addition to providing the aforementioned axial limiting function for the suction tube 3, also achieves the following unexpected technical effects: On the one hand, the axial limiting step 15 can block liquid glue from flowing from the glue container 14 through the second cylindrical space 12 to the inlet hole 21 on the tube fixing seat 7; on the other hand, the axial limiting step 15 can axially stop the suction tube 3 via the surface structure 16 to prevent the surface of the suction tube 3 containing glue from approaching the inlet hole 21 during assembly. Both of these aspects help to avoid the inlet hole 21 being undesirably blocked by glue, thus affecting the entry of the rinsing fluid. This has been proven to be very advantageous in practice, solving the problem that the inlet hole 21 is easily blocked by glue during assembly, thereby ensuring the rinsing function.

[0077] See Figure 3a and Figure 3b The pipe fixing seat 7 may have an external thread 23 on its outer peripheral surface on the far side of the liquid inlet hole 21. The external thread 23 is located on the outer peripheral surface of the liquid inlet section 19.

[0078] See Figure 3a The flushing tube fixing section 9 can be located on the far side of the liquid inlet section 19, and can have a multi-step structure centered on its inner surface, which surrounds a cylindrical flushing tube fixing space with different diameters for the flushing tube 4. The flushing tube 4 can be inserted into the flushing tube fixing space of the flushing tube fixing section 9 at its proximal end and fixed in the flushing tube fixing space by means of an adhesive (such as AB glue).

[0079] Therefore, the flushing tube fixing space can successively include, from distal to proximal end: a truncated cone-shaped flared opening 24; a first cylindrical space 25 adjacent to the flared opening 24; and a second cylindrical space 26 adjacent to the first cylindrical space 25 and having a smaller diameter. The outer diameter of the flushing tube 4 can be slightly smaller than the diameter of the second cylindrical space 26. See also... Figure 3a The flushing tube 4 can be inserted into the first cylindrical space 25 and the second cylindrical space 26.

[0080] An adhesive reservoir 27 is formed between the outer surface of the flushing pipe 4 and the inner surface of the flushing pipe mounting section 9 that defines the first cylindrical space 25. Adhesive can be easily injected into the adhesive reservoir 27 through the flared opening 24, for example, when the flushing pipe mounting section 9 is placed vertically upward, so as to glue the flushing pipe 4 and the flushing pipe mounting section 9 together. The second cylindrical space 26 is mainly responsible for radially constraining the flushing pipe 4 during installation.

[0081] Here, the second cylindrical space 26 of the flushing tube fixing section 9 can be directly adjacent to the aforementioned liquid inlet space 20, and the diameter of the former is larger than that of the latter, so a stepped surface can be formed at the transition between the two. The outer diameter of the flushing tube 4 is larger than the diameter of the liquid inlet space 20, or the outer diameter of the surface structure 16, such as knurling or texture, provided on the proximal outer circumferential surface of the flushing tube 4 is larger than the diameter of the liquid inlet space 20, so that the aforementioned stepped surface can form the stepped surface of the flushing tube axial limiting step 28 for axially limiting the flushing tube 4. The surface structure 16 can increase the frictional force in case of potential displacement or rotation, and increase the connection firmness between the flushing tube 4 and the flushing tube fixing section 9. When the flushing tube fixing section 9 is placed vertically upward and the flushing tube 4 is inserted from top to bottom into the flushing tube fixing space of the flushing tube fixing section 9, the flushing tube 4 can at least partially abut against the stepped surface of the flushing tube axial limiting step 28 with its proximal end face. Figure 3a (The middle section is on the right side of the step). This facilitates the subsequent adhesive injection process into the fixed space of the flushing pipe.

[0082] Depend on Figure 3a As can be seen, the inlet space 20 is in direct fluid communication with the radial gap 6 between the suction tube 3 and the flushing tube 4, so that the flushing fluid entering the inlet space 20 can directly enter the radial gap 6 between the two tubes 3 and 4 and flow out from the distal port of the flushing tube 4 along the radial gap 6.

[0083] In addition, see Figure 3bThe pipe fixing seat 7, or its flushing pipe fixing seat section 9, has a surface structure 29, such as raised stripes or concave grooves, on its outer circumference to facilitate screwing. This allows the pipe assembly 2 to be easily screwed in or unscrewed from the main handle 33 or the auxiliary handle 233 (described below) by hand, to replace it with a pipe assembly 2 of different specifications and sizes. For this purpose, see... Figure 6a and Figure 6b When the tube fixing seat 7 is screwed into the main handle 33 or the auxiliary handle 233, the flushing tube fixing seat section 9, or its surface structure 29, is exposed and can be manipulated.

[0084] The flushing pipe mounting section 9 has an annular groove 31 on its proximal side for accommodating a radial sealing ring 30. This annular groove 31 is adjacent to the external thread 23 on the inlet section 19 on its proximal side and to the flange 32 located at the proximal end of the flushing pipe mounting section 9 on its distal side; that is, the annular groove 31 is defined on both sides by the external thread 23 and the flange 32. Thus, the sealing ring 30 can be removed and installed together with the pipe mounting base 7, facilitating the overall replacement of the pipe assembly 2. Figure 3a In this case, the outer diameter of the radial sealing ring 30 is greater than the outer diameter of the external thread 23 and less than the outer diameter of the flange 32.

[0085] See Figures 7a to 7d The irrigation and aspiration drainage device 1 may have a main handle 33 for the operator to hold during surgery. The main handle 33 may be made of plastic to reduce costs. The main handle 33 may have a streamlined finger pinch surface to meet ergonomic requirements and increase grip comfort. The main handle 33 may have localized soft rubber structures to increase grip resistance.

[0086] See Figure 6a and Figure 7c The main handle 33 may have a main handle tube assembly connector (i.e., a first tube assembly connector) at its distal end for connecting the tube assembly 2. The main handle tube assembly connector may include a cylindrical receiving cavity 35 with internal threads 34, in which the tube assembly 2 may be threadedly connected with its tube retainer 7.

[0087] The threaded connection has proven to be very advantageous in practice. Compared to some existing plug-in connections, although different specifications of tube components can be replaced during the operation, the connection of the plug-in connection may easily loosen and fall off when it is necessary to pull and press the wound tissue during the operation, causing trouble for the doctor.

[0088] The irrigation and aspiration drainage device 1 may have a main aspiration branch 36, which can be used during surgery to aspirate dirt, such as bloody fluid or irrigation water, from the surgical area or wound when needed, so as to make the surgical field clear and reduce wound infection.

[0089] The main suction branch 36 may include the aforementioned suction tube 3 at its distal end. The suction tube 3 may be fixed within the main handle 33 via the tube retainer 7.

[0090] See Figure 6a and Figure 7c The main suction branch 36 may include an elongated cavity 37 disposed within the main handle 33. This cavity 37 may be located proximal to the receiving cavity 35, or suction tube 3, and its distal end may be in fluid communication with the suction tube 3. A through pressure regulating hole 38 is provided on the wall surrounding the cavity 37 of the main handle 33, allowing the cavity 37 to communicate with the atmospheric environment. The pressure regulating hole 38 may have a generally teardrop shape and may be located laterally to the main handle 33. During suction operation, the suction pressure is maximum when a finger, such as the thumb, fully presses the pressure regulating hole 38; the suction pressure is minimum when the finger does not press the pressure regulating hole 38; and the suction pressure gradually decreases as the area of ​​the pressure regulating hole 38 pressed by the finger decreases. Therefore, during surgical suction of debris, the operator can change the suction negative pressure or suction pressure in the main suction branch 36 by changing the area of ​​pressure applied by their finger to the pressure regulating hole 38, thereby changing the speed of suctioning debris from the wound.

[0091] See Figures 1a to 1c The main suction branch 36 may include a suction connection tube 39 (i.e., the first suction connection tube 39) disposed near the main handle 33. The distal portion of the suction connection tube 39 may be a soft and elastic medical rubber (silicone) tube, providing a comfortable grip on the main handle 33 without pulling or twisting the wrist or causing hand discomfort; the proximal portion of the suction connection tube 39 may be a PU (polyurethane) tube, possessing certain strength and toughness, and can be connected to the distal portion via a two-way connector (not shown). It is also conceivable that the suction connection tube 39 may be made of a single piece of the same material. The suction connection tube 39 may have its distal end fitted over a hollow cylindrical protrusion 55 near the proximal end of the main handle 33 (see...). Figure 7aThe suction connection tube 39 is connected to the suction tube 3 via the cavity 37 and flows fluidly through it. The suction connection tube 39 can be connected at its proximal end to a suction machine (not shown) for applying negative pressure via a three-way connector 40. During normal suction operation via the main suction branch 36, the lateral port 41 of the three-way connector 40 can be sealed by a plug 42 to maintain negative pressure within the main suction branch 36. If the main suction branch 36 cannot perform normal suction operation due to blockage by dirt, the secondary suction branch 236 (which will be described in detail below) of the flushing and suction drainage device 1 of this invention can be connected via the lateral port 41 to establish a backup suction branch to continue the surgery and avoid interruption. Of course, the secondary suction branch 236 can also be (interference-fitted) connected to the lateral port 41 before surgery for backup. Meanwhile, the suction connection tube 39 can be clamped shut by a flow stop clamp 43 (e.g., a Robert clamp) to maintain negative pressure in the secondary suction branch 236 where suction operation is performed. At this time, the main suction branch 36 can be cleared by a nurse using a cleaning rod.

[0092] See Figures 12a to 12c The flushing and aspiration drainage device 1 may have a secondary handle 233 for the operator to hold during surgery. The secondary handle 233 may be made of plastic to reduce costs.

[0093] See Figure 6b and Figure 12c The secondary handle 233 may have a secondary handle tube assembly connector (i.e., a second tube assembly connector) at its distal end for connecting the tube assembly 2. The secondary handle tube assembly connector may also include a cylindrical receiving cavity 235 with internal threads 234, just like the main handle tube assembly connector, in which the tube assembly 2 can be threadedly connected with its tube retainer 7.

[0094] In this invention, the main handle tube assembly connector and the auxiliary handle tube assembly connector are configured to connect the same tube assembly 2, or in other words, the same tube assembly 2 can be connected to the main handle 33 via the main handle tube assembly connector, and also to the auxiliary handle 233 via the auxiliary handle tube assembly connector. Therefore, the main handle tube assembly connector, or the receiving cavity 35, and its internal thread 34, can be designed to be identical in size and structure to the auxiliary handle tube assembly connector, or the receiving cavity 235, and its internal thread 234, at least at the connection point with the tube assembly 2, to fit properly to the tube fixing seat 7 of the tube assembly 2.

[0095] Because the tube assembly connectors of the main handle 33 and the auxiliary handle 233 are interchangeable, meaning they can be used to connect the same tube assembly 2, the total number of tube assemblies provided with the main handle 33 and auxiliary handle 233 in the sold product can be reduced. For example, for a surgical irrigation and aspiration drainage device 1 sold (e.g., as a kit), the main handle 33 and auxiliary handle 233 can be equipped with multiple tube assemblies 2 of different specifications (e.g., different diameters) to facilitate preoperative selection or intraoperative replacement of the appropriate specification tube assembly 2. If the tube assembly connectors of the main and auxiliary handles are not interchangeable, then a separate set (e.g., three per set) of different specifications of tube assemblies would be required for both the main and auxiliary handles, meaning two sets (a total of six) of different tube assemblies would be needed. However, in the device 1 of this application, the tube assembly connectors of the main and auxiliary handles are interchangeable, so only one set of interchangeable tube assemblies of different specifications is needed, which can be connected to both the main handle 33 and the auxiliary handle 233. Therefore, the number of tube assemblies 2 and the number of sets required are saved.

[0096] Alternatively, one could consider other detachable connection methods between the pipe assembly 2 and the main and auxiliary handles 33 and 233 besides threaded connections, such as plug-in connections. Another possibility is a non-detachable connection between the pipe assembly 2 and the main and auxiliary handles 33 and 233 (i.e., once connected, it cannot be disassembled without damaging the connection pair). However, as long as the pipe assembly connectors of the main and auxiliary handles 33 and 233 are universal, the pipe assembly 2 can be connected to both the main handle 33 and the auxiliary handle 233, thus achieving the technical effect of this utility model of saving the number and sets of pipe assemblies 2 required.

[0097] The flushing and suction drainage device 1 may have a secondary suction branch 236, which can be used to perform suction operations in place of the main suction branch 36 when suction operations cannot be performed due to blockage during surgery.

[0098] The secondary suction branch 236 may include the suction tube 3 of the tube assembly 2 described above at its distal end. The suction tube 3 may be fixed in the secondary handle 233 via the tube retainer 7.

[0099] See Figure 6b and Figure 12c The secondary suction branch 236 may include an elongated cavity 237 disposed within the secondary handle 233. This cavity 237 may be located near the receiving cavity 235, or the suction tube 3, and its distal end may be in fluid communication with the suction tube 3. See also... Figures 12a to 12cThe secondary handle 233 has two opposing, roughly triangular finger-gripping surfaces 220 and 230. A pressure adjustment hole 238 can be provided on the concave arc surface of the finger-gripping surface 220 of the secondary handle 233. This pressure adjustment hole 238 allows the cavity 237 to communicate with the atmospheric environment, and the concave arc surface facilitates precise control of the pressure adjustment hole 238 by the finger (thumb). The other opposing finger-gripping surface 230 can be configured as a convex arc surface to facilitate support on another finger (index finger), and a soft rubber structure can be attached to it to increase friction with the finger. The pressure adjustment hole 238 on the secondary handle 233 can be designed with the same function as the pressure adjustment hole 38 on the main handle 33, and can also have a roughly teardrop shape and be located on the side of the secondary handle 233. Its operation during suction is the same as that of the pressure adjustment hole 38 on the main handle 33, and will not be described further here.

[0100] See Figures 1a to 1c The secondary suction branch 236 may include a suction connection tube 239 (i.e., a second suction connection tube 239) disposed near the secondary handle 233. The distal portion of this suction connection tube 239 may be a soft and flexible medical rubber (silicone) tube, providing a comfortable grip on the secondary handle 233 without pulling or twisting the wrist or causing hand discomfort. The proximal portion of the suction connection tube 239 may be a PU (polyurethane) tube, possessing a certain strength and toughness, and can be connected to the distal portion via a two-way connector (not shown). It is also conceivable that the suction connection tube 239 may be made of a single piece of the same material. A flow-stopping clip 43 may also be provided to the suction connection tube 239 to close it when not in use and open it when in use.

[0101] The suction connector 239 can be connected via its distal end Figures 13a to 13c The curved tailpipe connector 200 shown is connected to the secondary handle 233 and is in fluid communication with its cavity 237 and suction tube 3. The curved tailpipe connector 200 allows the suction connecting tube 239 to extend off-axis from the secondary handle 233, further preventing the suction connecting tube 239 from getting caught in the hand during use. See also... Figures 13a to 13cThe tailpipe connector 200 has a suction connection tube connecting section 201 and a secondary handle connecting section 202 that are bent and oriented relative to each other. The suction connection tube 239 can be interference-fitted onto the outer periphery of the suction connection tube connecting section 201 for a fixed connection. To increase connection reliability, multiple barbs or steps can be provided on the outer periphery of the suction connection tube connecting section 201. The secondary handle 233 can have a tapered proximal connecting portion 250, which can be inserted into the connecting cavity 204 of the secondary handle connecting section 202, forming a tapered interference fit. Adhesive can be applied to the outer peripheral surface of the proximal connecting portion 250 of the secondary handle 233 before insertion to increase connection reliability. A positioning block 203 extending axially from the free end can be provided on the secondary handle connecting section 202 of the tailpipe connector 200, and correspondingly, a positioning groove 260 can be provided on the secondary handle 233 on the distal side of its proximal connecting portion 250. When the tailpipe connector 200 is plugged into the auxiliary handle 233, the positioning block 203 is inserted into the positioning groove 260 to provide circumferential orientation, ensuring the desired circumferential relative position of the tailpipe connector 200 with respect to the auxiliary handle 233 and, therefore, the desired bending direction relative to the auxiliary handle 233. This orientation allows the suction connecting tube 239 to extend proximally and downwardly from the auxiliary handle 233 when the auxiliary handle 233 is operated, thus preventing the suction connecting tube 239 from interfering with or getting stuck on the operator's hand. Alternatively, the positioning block 203 could be positioned on the auxiliary handle 233, while the positioning groove 260 is positioned on the tailpipe connector 200.

[0102] The suction connection tube 239 can be fitted (interference-fitted) at its proximal end onto the lateral interface 41 of the tee connector 40 and connected via the tee connector 40 to a suction machine (not shown) for applying negative pressure. As described above, this allows for the establishment of a backup suction line using the secondary suction line 236 to continue the surgery and avoid interruption if the main suction line 36 is blocked by debris. Alternatively, the suction connection tube 239 can be connected to the tee connector 40 in advance for backup. In other words, the suction connection tube 39 on the main handle 33 and the suction connection tube 239 on the secondary handle 233 can be connected to the suction machine via a common tee connector 40, saving on the number of connectors. Here, only suction operation can be performed via the secondary handle 233; even if the tube assembly 2 connected to the secondary handle 233 has both a suction tube and a flushing tube, the flushing tube is not operational. However, it is conceivable that the secondary handle 233, like the main handle 33, could be designed to have both flushing and suction functions.

[0103] The irrigation and aspiration drainage device 1 may have an irrigation branch 44, which can be used to irrigate the wound with an irrigation solution, such as sterile saline or sugar solution, when needed during surgery.

[0104] Flushing branch 44 has a flushing pipe 4 at its distal end. See also Figure 6a The flushing tube 4 can be fixed in the main handle 33 with its proximal end by means of the tube fixing seat 7.

[0105] See Figure 6a The flushing branch 44 may include a two-way bend connector 45, which can be inserted at its distal end into the radial through hole 46 of the main handle 33. The radial through hole 46 can be located on the wall of the enclosing receiving cavity 35 of the main handle 33 on the radially outer side of the guide groove 22 on the pipe fixing seat 7 (see...). Figures 7b to 7d Thus, the two-way bend connector 45 can be in fluid communication with the guide groove 22 via the radial through hole 46. The two-way bend connector 45 can be inserted into the flushing hose 47 at its proximal end (see...). Figure 6a The flushing hose 47 can extend approximately parallel to the elongated cavity 37 within the main handle 33. The flushing hose 47 may be equipped with a water control device 48 for controlling its opening and closing, which will be described in more detail below.

[0106] Therefore, see Figure 7c and Figure 7d A cavity 49 may be provided at the lower part of the main handle 33 parallel to the elongated cavity 37, and the cavity 49 may be opened to the side and may be covered by a fitting cover 56. Figure 8 ) Covering from the side, the cover 56 in Figure 7b and Figure 7d It was removed from the middle.

[0107] See Figures 1a to 1c The irrigation branch 44 may include an irrigation connection tube 50 located proximal to the main handle 33. The irrigation connection tube 50 may be a plastic tube, such as a PVC tube. The distal end of the irrigation connection tube 50 may be connected to the proximal end of the irrigation hose 47 via a two-way straight connector 51. The proximal end of the irrigation connection tube 50 may be connected to a plastic needle 52, which can be inserted into an infusion bag (not shown) containing irrigation fluid. If necessary, an infusion pressure bag (not shown) may be fitted over the infusion bag to provide sufficient irrigation pressure. A flow rate regulator 53 may be provided on the irrigation connection tube 50 for stepless adjustment of the irrigation fluid flow rate, which is suitable, for example, for use in delicate minimally invasive surgery. Alternatively, a flow stop clamp (e.g., a Robert clamp) may be used instead of the flow rate regulator 53 to clamp the irrigation connection tube 50.

[0108] The aforementioned two-way bend connector 45, flushing hose 47, water control device 48, and two-way straight connector 51 can be installed together in the aforementioned cavity 49 of the main handle, and can all be laterally covered by the cover 56.

[0109] In addition, see Figure 6a and Figure 6bWhen the tube assembly 2 is screwed into the main handle 33 and the auxiliary handle 233, the two sealing rings 17 and 30 respectively seal against the inner surfaces of the receiving cavities 35 and 235 of the main handle 33 and the auxiliary handle 233. For the main handle 33, the distal sealing ring 30 can seal the flushing fluid relative to the external environment to prevent the flushing fluid from overflowing into the external environment. For this purpose, the receiving cavity 35 of the main handle 33 has a sealing conical surface 60 at its distal opening to prevent the flushing fluid from overflowing out of the main handle 33, and the sealing ring 30 can abut against the conical surface 60. The proximal sealing ring 17 can seal the flushing fluid relative to the cavity 37 of the main suction branch 36 to prevent the flushing fluid from overflowing into the cavity 37 of the main suction branch 36. In order to better abut the proximal sealing ring 17 against the inner surface of the receiving cavity 35, the receiving cavity 35 may have a cylindrical surface 54 near its internal thread 34 for sealing engagement with the proximal sealing ring 17. As for the secondary handle 233, although it only performs suction operations and not rinsing operations, in order to be compatible with the same tube assembly 2, the receiving cavity 235 of the secondary handle 233 can be designed to be the same as the receiving cavity 35 of the main handle 33.

[0110] Next, combine Figures 8 to 11c The structure and working principle of a water control device 48 according to one embodiment of the present invention are described.

[0111] The water control device 48 for controlling the rinsing operation can be located on the main handle 33, but not on the auxiliary handle 233 which is only used for suction operation. The water control device 48 can be operated by the operator from the side of the main handle 33 that is the same as the side where the pressure regulating hole 38 is located. For example, both can be operated by the thumb.

[0112] See Figures 11a to 11c The water control device 48 may have a base 132, which may have cylindrical sidewalls and a bottom wall that is closed at one end and open at the other end. The sidewalls may have two opposing windows 133 through which the flushing hose 47 passes through the base 132. The bottom wall may have a cylindrical protrusion 134 centrally formed thereon.

[0113] See Figures 10a to 10cThe water control device 48 may have a button 135, which may have a cylindrical body 142. The diameter of the body 142 may be smaller than the inner diameter of the base 132, so that the body 142 can be embedded in the base 132 and reciprocate relative to the base 132 in the axial direction. The body 142 may have a through-hole 136 extending transversely through its longitudinal axis, through which the flushing hose 47 passes through the base 132. The button 135 may have a downwardly extending cylindrical protrusion 137 at one end and a flat pressing portion 138 on its opposite side, which can be pressed by an operator.

[0114] See Figures 9a to 9c The water control device 48 may have a spring mechanism 139, for example, configured as a compression spring, by which the base 132 and the button 135 cooperate. The button 135 may be partially embedded in the base 132, and the protrusion 137 of the button 135 and the protrusion 134 of the base 132 may be oriented toward each other. The spring mechanism 139 may be located between the base 132 and the button 135, with one end fitted onto the protrusion 134 of the base 132 and the other end fitted onto the protrusion 137 of the button 135. The through portion 136 of the button 135 may have its two opposing openings oriented toward the two windows 133 of the base 132, so that the flushing hose 47 may pass through both the window 133 of the base 132 and the through portion 136 of the button 135 simultaneously (see...). Figure 8 The spring mechanism 139 can be configured such that, in the unpressed state of the button 135, the spring mechanism 139, with its return force, squeezes the button 135 away from the base 132, causing the flushing hose 47 to be clamped by the shear force applied to the flushing hose 47 by the window 133 of the base 132 and the bottom of the through portion 136 of the button 135, thereby blocking the flow of flushing fluid therein; while in the pressed state of the button 135, the button 135 can overcome the return force of the spring mechanism 139 and move toward the base 132 until the flushing hose 47 is no longer subjected to shear force and is released, thereby releasing the flow of flushing fluid therein.

[0115] See Figure 8 With the water control device 48 installed on the main handle 33, the base 132 can be embedded and fixed within the cavity 49 of the main handle 33, and the button 135 can be positioned laterally away from the cover 56 towards the main handle 33. As described above, the operator can release the flushing fluid in the flushing hose 47 by pressing the button 135 laterally, and can stop the flow of the flushing fluid by releasing the button 135.

[0116] In some embodiments, the water control device 48 may also be configured such that the button 135 is a cylindrical structure with one end open and the other end forming a pressing part 138, and the button 135 can be fitted onto the base 132 with its open opening, and a spring mechanism 139 is also provided between the base 132 and the button 135. In some embodiments, the water control device 48 may also be configured such that the base 132 is not separate from the main handle 33, but is part of the main handle 33, that is, the base 132 is formed by the internal structure of the main handle 33.

[0117] The operation process of the surgical irrigation and aspiration drainage device 1 of this utility model is described below, including the aspiration operation process and the irrigation operation process:

[0118] Suction Operation Process: Without pressing the button 135 of the water control device 48 to block the flushing branch 44, simultaneously press the pressure adjustment hole 38 of the main handle 33 (or the pressure adjustment hole 238 of the auxiliary handle 233) with your finger to generate suction pressure in the main suction branch 36 (or the auxiliary suction branch 236) for waste suction. The suction pressure can be controlled by adjusting the area of ​​the pressure adjustment hole 38 (or the pressure adjustment hole 238) pressed by your finger, thereby changing the speed of suctioning waste from the wound.

[0119] Rinsing operation process: Instead of pressing the pressure adjustment hole 38 (or pressure adjustment hole 238) with your finger, press the button 135 of the water control device 48, so that the rinsing hose 47 opens, the rinsing fluid flows through the rinsing hose 47 and flows out from the radial gap 6 between the rinsing pipe 4 and the suction pipe 3, thus realizing the rinsing function; when you release the button 135, the spring mechanism 139 causes the water control device 48 to clamp the rinsing hose 47, thereby stopping the rinsing.

[0120] Figures 1a to 1c The surgical irrigation and aspiration drainage device 1 shown is in a fully installed state. It is conceivable that, when the product is sold, its three main parts can be packaged separately: the main handle 33 and its proximal tubing, the auxiliary handle 233 and its proximal tubing, and the (multiple) tubing assemblies 2 are packaged separately as a kit. After unpacking, the tubing assemblies 2 can be installed on the main handle 33 and / or the auxiliary handle 233 as needed by the operator. The connection of the auxiliary handle 233 with its suction connection tube 239 to the tee connector 40 can be performed preoperatively or intraoperatively if the main suction branch 36 is blocked. Of course, other packaging methods are also possible and are not limited here.

[0121] The main technical effects achieved by the surgical irrigation and suction drainage device 1 of this utility model include, but are not limited to: the internal space of the suction tube 3 is not occupied by the irrigation tube 4, ensuring smooth suction operation and reducing the chance of blockage; the irrigation branch 44 and the main suction branch 36 or the auxiliary suction branch 236 are completely independent of each other in terms of fluid, preventing the possibility of suctioned fluid being flushed back into the surgical wound and increasing the chance of secondary infection; the irrigation fluid flow rate can be adjusted according to the surgical needs by pre-setting the radial gap 6 between the suction tube 3 and the irrigation tube 4 without affecting the suction function; the main handle 33 and the auxiliary handle 233 are provided with suction pressure adjustment holes 38 or 238, which can realize stepless adjustment of suction pressure; the main handle 33 is provided with an organic... The water control device 48 of the mechanical spring mechanism 139 enables instantaneous connection and disconnection of the irrigation hose 47 and subsequently the irrigation branch 44 without the need for additional specialized equipment, making operation easy, quick, and reliable. The sharp edges of the front ends of the suction tube 3 and the irrigation tube 4 are rounded to prevent tissue cuts. The inlet of the suction tube 3 is also provided with an inwardly rolled edge 5 to prevent tissue scratching. Because the diameter or volume of the part of the irrigation and suction drainage device 1 that enters the human body is smaller, more instruments can be used simultaneously in the surgical wound channel during surgery. The irrigation and suction drainage device 1 is completely sealed and sterilely connected, reducing the chance of infection. The streamlined design of the finger pinching surface of the main handle 33 fully meets the requirements of ergonomics. Most of the components of the irrigation and suction drainage device 1 are made of plastic, which is inexpensive. The irrigation and aspiration drainage device 1 is for single use, eliminating the risk of cross-infection from reuse. The tube assembly 2 can be detachably connected to the main handle 33 and the auxiliary handle 233, facilitating the replacement of other specifications of the tube assembly 2 during or before surgery, such as tube assembly 2 with longer, shorter, thicker, thinner, more curved, and / or straighter irrigation tubes 4 and aspiration tubes 3. The threaded connection between the tube assembly 2 and the main handle 33 and the auxiliary handle 233 ensures that they do not loosen during surgery, ensuring operational accuracy. The tube assembly 2, including the irrigation tube 4, aspiration tube 3, and the composite tube fixation seat 7, is independently designed. The tube components 2 are self-contained and can be designed in various diameters or lengths. During the operation, different diameters or lengths can be changed as needed to meet clinical surgical requirements. In addition, the tube component connectors of the main handle 33 and the auxiliary handle 233 are interchangeable, meaning they can be used to connect the same tube components 2. This reduces the total number of tube components provided with the main handle 33 and the auxiliary handle 233, and eliminates the need to spend extra time identifying which tube component 2 is compatible with which handle 33 or 233 during the operation, as they are all compatible.

[0122] Finally, it should be noted that the above embodiments are merely for understanding and explaining the present invention, and do not constitute a limitation on the scope of protection of the present invention. Those skilled in the art can make modifications 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 and aspiration drainage device, characterized in that, The surgical irrigation and aspiration drainage device enables the suction of waste from the surgical area and the rinsing of the surgical area during surgery. The surgical irrigation and aspiration drainage device includes: The main handle enables the suction and rinsing operations to be performed. A secondary handle, through which at least the suction operation can be performed; and At least one tube assembly, the tube assembly including a suction tube, a flushing tube nested with the suction tube, and a tube holder fixedly connected to the suction tube and the flushing tube, wherein the tube assembly can be connected not only to the main handle but also to the auxiliary handle via its tube holder.

2. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The tube assembly can be detachably connected to both the main handle and the auxiliary handle via its tube mounting base.

3. The surgical irrigation and aspiration drainage device according to claim 2, characterized in that, The tube assembly can be threadedly connected to the main handle and the auxiliary handle via its tube mounting base, or the tube assembly can be plugged into the main handle and the auxiliary handle via its tube mounting base.

4. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The main handle is connected to a first suction connection tube on its proximal side, and the auxiliary handle is connected to a second suction connection tube on its proximal side. The first suction connection tube and the second suction connection tube can be connected to a common tee connector. When performing a suction operation through the main handle, the main handle is in fluid communication with the suction machine through the first suction connection tube and the tee connector. When performing a suction operation through the auxiliary handle, the auxiliary handle is in fluid communication with the same suction machine through the second suction connection tube and the tee connector.

5. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The main handle has a first pipe assembly connector for connecting the pipe assembly, and the auxiliary handle has a second pipe assembly connector for connecting the pipe assembly. The first pipe assembly connector and the second pipe assembly connector are constructed identically at least at the connection points for connecting to the pipe assembly.

6. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The suction operation can be performed via the secondary handle, but the rinsing operation cannot.

7. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The secondary handle is connected to a second suction connection tube on its proximal side. The second suction connection tube is connected to the secondary handle via a bent tail tube connector, such that the second suction connection tube extends off-axis from the secondary handle in the section near the secondary handle.

8. The surgical irrigation and aspiration drainage device according to claim 7, characterized in that, The auxiliary handle has a tapered proximal connection portion, which can be inserted into the tailpipe connector and form an interference fit, and the insertion part is coated with adhesive.

9. The surgical irrigation and aspiration drainage device according to claim 7, characterized in that, The tailpipe connector is provided with one of a positioning block and a positioning groove, and the auxiliary handle is provided with the other of a positioning block and a positioning groove. When the tailpipe connector is connected to the auxiliary handle, the positioning block is inserted into the positioning groove for circumferential orientation.

10. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The secondary handle has two opposing finger pinching surfaces. One of the finger pinching surfaces, which is a concave arc surface, is provided with a pressure adjustment hole for adjusting the suction pressure, while the other finger pinching surface is a convex arc surface.

11. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The tube holder has a suction tube holder section and a flushing tube holder section. The tube holder is fixed to the suction tube via the suction tube holder section and to the flushing tube via the flushing tube holder section. The tube holder also has a liquid inlet section, which is disposed between the suction tube holder section and the flushing tube holder section. The liquid inlet section has a radially extending liquid inlet hole. During the flushing operation, the flushing fluid can enter the radially inner side of the liquid inlet section from the radially outer side of the liquid inlet section by means of the liquid inlet hole.

12. The surgical irrigation and aspiration drainage device according to claim 11, characterized in that, The flushing tube is sleeved on the suction tube, and the flushing tube fixing section is located on the far side of the suction tube fixing section. During the flushing operation, the flushing fluid can enter the inlet space formed by the inner surface of the inlet section and the outer surface of the suction tube from the radial outside of the inlet section by means of the inlet hole. The inlet space is in fluid communication with the radial gap between the suction tube and the flushing tube.

13. The surgical irrigation and aspiration drainage device according to claim 11, characterized in that, The tube holder has an external thread on its outer periphery, distal to the inlet hole. The main handle and the auxiliary handle have internal threads that match the external thread, so that the tube assembly can be threaded to the main handle and the auxiliary handle through its tube holder.

14. The surgical irrigation and aspiration drainage device according to claim 13, characterized in that, The tube holder has a proximal sealing ring on its outer periphery near the liquid inlet, and a distal sealing ring on its outer periphery far from the external thread.

15. The surgical irrigation and aspiration drainage device according to claim 14, characterized in that, When the pipe assembly is threaded to the main handle or the auxiliary handle, the proximal sealing ring and the distal sealing ring are located on the proximal and distal sides of the internal thread of the main handle or the auxiliary handle, respectively.

16. The surgical irrigation and aspiration drainage device according to claim 1, characterized in that, The surgical irrigation and aspiration drainage device includes two, three, or more tubular assemblies.

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