CN221692530U - Tube assembly, tube set and surgical irrigation suction drainage instrument - Google Patents

Abstract

The utility model relates to a tube assembly, which is used for a surgical irrigation, suction and drainage instrument, and is characterized in that the tube assembly includes a suction tube, a flushing tube nested with the suction tube, and a tube fixing seat, and the tube assembly can be detachably connected to the surgical irrigation, suction and drainage instrument by means of the tube fixing seat, wherein the tube fixing seat has a suction tube fixing seat section and a flushing tube fixing seat section, the tube fixing seat is fixed to the suction tube via the suction tube fixing seat section, and is fixed to the flushing tube via the flushing tube fixing seat section, wherein the suction tube fixing seat section and the flushing tube fixing seat section are integrally formed. Beneficial effects include: the composite tube fixing seat is integrally formed, and can be fixed to both the flushing tube and the suction tube at the same time, so that the tube assembly can be independently arranged and self-contained, and is convenient for being detachably connected to the surgical irrigation, suction and drainage instrument at any time. The utility model also relates to a tube assembly kit and a surgical irrigation, suction and drainage instrument.

Description

Tube assemblies, tube assembly kits and surgical irrigation, suction and drainage devices

Technical Field

The utility model relates to the field of medical instruments, in particular to a tube assembly, a tube assembly kit and a surgical flushing, suction and drainage instrument.

Background Art

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 operations require the timely removal of bloody liquid or flushing water produced by the wound to clean up dirt in the surgical field, make the surgical field clear, and reduce infection.

There are three main ways of flushing and suction used in domestic hospitals. The first is the traditional open flushing and suction that has been used for a long time: the nurse opens the sterile saline or sugar water, pours it into the container, and then sucks it with a water balloon and hands it to the doctor for use, or scoops it out of the container with a small bowl and hands it to the doctor for use. This flushing process produces the following problems: contamination is easy to occur in this process, because the bottle mouth or bag mouth of the sterile saline is easy to be contaminated when it is opened; the water container is exposed to the air for a long time (almost throughout the entire operation), which also increases the chance of contamination; there are bacteria on the hands and the outside of the container, and the operation over the basin does not comply with the principle of sterility; in addition, the operation is not convenient. After the surgeon sends a water request message, the nurse goes to get water and then passes it, which wastes precious surgical time. When suction is needed, use gauze or aspirator (tube) to absorb excess intraoperative fluid. The aspirator (tube) is generally reused, that is, after each operation, the nurse cleans the inside of the aspirator (tube) with a cleaning rod, cleans the inside and outside, and finally sterilizes it with high temperature and high pressure before reuse. Cleaning the inside of the suction device (tube) is a problem, which may lead to infection due to incomplete cleaning of dirt and increase the workload of medical staff. Therefore, this open flushing and suction method is prone to infection, cumbersome to operate and time-consuming.

The second type is the pressure-regulated minimally invasive irrigation and suction tube that has appeared on the market in recent years. This product has changed the traditional water supply method, and the two-way irrigation and suction pipelines are merged into a thin curved stainless steel suction tube, which can be inserted into the surgical wound. The other end of the irrigation pipeline is connected to a saline bag, and the other end of the suction pipeline is connected to a negative pressure aspirator. Through a simple handle button switching operation, the surgical wound can be flushed and suctioned at any time, which is easy to operate and shortens the operation time. However, one disadvantage of this device is that the two-way irrigation and suction pipelines share a thin stainless steel suction tube, so a small amount of the wound body fluid that has been sucked away still remains on the inner wall of the shared stainless steel suction tube. During irrigation, it is flushed into the surgical wound by saline, causing the patient to have a secondary infection. In addition, the irrigation pipeline is relatively thick, the water volume is large, and it is not convenient to adjust, so it is not suitable for delicate minimally invasive surgery.

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 aspirated liquid being flushed back into the surgical wound. However, these improved irrigation and suction devices cannot be replaced with irrigation and suction tubes of other specifications during surgery. 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 there is a flushing pipe nested in the suction channel, which makes the cross-sectional space of the suction channel partially occupied, making the suction channel prone to blockage; in addition, the switch function of the flushing line of this model is circuit controlled, and the flushing line needs to be equipped with special 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, which affects the convenience of the product.

Finally, the applicant described in its prior patent (CN217593490U) an irrigation aspirator with a split support, wherein the two support parts are separated from each other and arranged at a distance in the axial direction, and are used to fix the irrigation tube and the suction tube respectively. However, this irrigation aspirator is also impossible or difficult to replace irrigation and suction tubes of other specifications during surgery. In particular, after the tube is bent by tooling or manually, the structure of the tube sleeve makes it impossible for the two support parts of the split support to be pulled out one by one.

Utility Model Content

The purpose of the utility model is to provide a tube assembly, a tube assembly kit and a surgical irrigation, suction and drainage instrument, which can at least solve one of the above-mentioned problems.

In order to achieve the above-mentioned purpose, the utility model proposes a tube assembly, which is used for a surgical irrigation, suction and drainage instrument. The tube assembly has a distal end that is farther away from an operator when in use and a proximal end that is closer to the operator when in use, and is characterized in that the tube assembly includes a suction tube, a flushing tube nested with the suction tube, and a tube fixing seat, and the tube assembly can be detachably connected to the surgical irrigation, suction and drainage instrument with the aid of the tube fixing seat, wherein the tube fixing seat has a suction tube fixing seat section and a flushing tube fixing seat section, the tube fixing seat is fixed to the suction tube via the suction tube fixing seat section, and is fixed to the flushing tube via the flushing tube fixing seat section, wherein the suction tube fixing seat section and the flushing tube fixing seat section are integrally formed.

The beneficial effects of the tube assembly of the utility model for surgical irrigation, suction and drainage equipment are, but not limited to, that the composite tube fixing seat is integrally formed and can be fixed to both the irrigation tube and the suction tube at the same time, so that the tube assembly can be independently arranged and self-contained, and can be detachably connected to the surgical irrigation, suction and drainage equipment at any time.

Advantageously, the tube fixing seat is provided with an external thread, and the tube fixing seat can be detachably connected to the surgical irrigation, suction and drainage instrument in a threaded connection manner via its external thread.

Advantageously, the pipe fixing seat is provided with a surface structure on its outer circumference distal to its external thread for facilitating force-applying screwing, and the surface structure can be grasped by an operator in the installed state of the pipe assembly.

Advantageously, the tube fixing seat has a liquid inlet section, which is arranged between the suction tube fixing seat section and the flushing tube fixing seat section. The liquid inlet section has a radially extending liquid inlet hole, and the flushing liquid can enter the radial inner side of the liquid inlet section from the radial outer side of the liquid inlet section through the liquid inlet hole.

Advantageously, the flushing tube is sleeved on the suction tube, and the flushing tube fixing seat section is arranged on the distal side of the suction tube fixing seat section, wherein the flushing liquid can enter the liquid inlet space formed by the inner surface of the liquid inlet section and the outer surface of the suction tube from the radial outside of the liquid inlet section through the liquid inlet hole, and the liquid inlet space is connected to the radial gap fluid between the suction tube and the flushing tube.

Advantageously, the liquid inlet section is provided with a circumferentially extending guide groove on its outer circumference, and the guide groove extends through the liquid inlet hole and intersects therewith.

Advantageously, the tube fixing seat is provided with an external thread on its outer circumference at the far side of the liquid inlet hole.

Advantageously, the suction tube fixing seat section has a suction tube axial limiting step, and the suction tube is provided with a surface structure on its proximal outer circumference, by means of which the suction tube can be axially stopped on a radially extending step surface of the suction tube axial limiting step.

Advantageously, the surface structure extends over the entire circumference of the suction tube.

Advantageously, the suction tube fixing seat section is provided with a first space proximal to the axial limiting step of the suction tube and a second space which is adjacent to the first space distally and has a smaller diameter than the first space, wherein the suction tube passes through the first space and the second space, and the suction tube fixing seat section forms a glue receiving portion with the suction tube in the first space.

Advantageously, the suction tube fixing seat section is provided with a bell mouth open outwardly adjacent to the first space at a proximal side of the first space.

Advantageously, the flushing tube fixing seat section has a flushing tube axial limiting step, and the flushing tube can be axially stopped with its proximal end face on a radially extending step surface of the flushing tube axial limiting step.

Advantageously, the flushing tube fixing seat section is provided with a first space distal to the axial limiting step of the flushing tube and a second space adjacent to the first space proximal to the first space and having a smaller diameter than the first space, wherein the flushing tube passes through the first space and the second space, and the flushing tube fixing seat section forms a glue receiving portion with the flushing tube in the first space.

Advantageously, the flushing tube mounting section is provided with a bell mouth that is open outwardly and is adjacent to the first space at a distal side of the first space.

Advantageously, the tube fixing seat is provided with an annular groove for accommodating a radial sealing ring on its outer circumference near the liquid inlet hole.

Advantageously, the tube fixing seat is provided with an annular groove for accommodating a radial sealing ring on its outer circumference at the far side of the liquid inlet hole.

Advantageously, the pipe fixing seat is provided with an annular groove for accommodating a radial sealing ring on its outer circumference and distal to the external thread.

The utility model also proposes a tube assembly kit, characterized in that the tube assembly kit includes at least two tube assemblies according to the utility model, wherein different tube assemblies differ from each other in the length and/or diameter and/or curvature of their suction tubes and/or flushing tubes. The same tube assembly kit may include multiple different tube assemblies, and the flushing tubes and/or suction tubes of these tube assemblies may be designed to have multiple diameters or lengths or curvature specifications, so that during the operation, different diameters or lengths may be replaced according to the needs of the operation to meet the clinical operation requirements.

The utility model also provides a surgical irrigation, suction and drainage device, characterized in that the surgical irrigation, suction and drainage device comprises:

a handle that can be held by an operator during surgery; and

According to the tube assembly of the present invention or the tube assembly kit of the present invention, the tube assembly or each tube assembly of the tube assembly kit can be detachably connected to the handle.

Advantageously, the tube fixing seat of the tube assembly can be fixed with its external thread in the receiving cavity of the handle having an internal thread.

Advantageously, the pipe fixing seat is provided with a surface structure on its outer circumference far from its external thread for facilitating force-applying screwing, and in the installed state of the pipe assembly, the surface structure is at least partially exposed from the accommodating cavity and can be grasped by an operator.

Advantageously, the accommodating cavity of the handle is provided with a conical surface for sealing at the opening of the distal end thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be explained in more detail below with reference to the accompanying drawings by means of embodiments, but the present invention is not limited to the embodiments described in the accompanying drawings and described in detail below. The accompanying drawings are as follows:

FIG. 1a is a schematic side view of an embodiment of the present invention;

FIG. 1 b is a schematic side view of the surgical irrigation, suction and drainage instrument in FIG. 1 a , wherein the handle is partially cut away;

FIG. 1c is a schematic top view of the surgical irrigation, suction and drainage instrument in FIG. 1a , wherein the handle is partially split at the water control device;

FIG. 2a is a schematic diagram of a tube assembly of the surgical irrigation, suction and drainage instrument in FIG. 1a ;

FIG2b is a schematic diagram of the tube assembly of FIG2a , wherein the proximal end is partially sectioned;

FIG3a is a schematic enlarged view of a portion III of the pipe assembly in FIG2b;

FIG3 b is a schematic perspective view of a tube fixing seat of the tube assembly in FIG2 a ;

FIG4 is a schematic diagram of the suction tube of the tube assembly in FIG2a with the distal end thereof partially cut away;

FIG5 is a schematic enlarged view of a sectioned portion IV of the suction tube in FIG4 ;

FIG6 is a schematic enlarged view of a portion I of the surgical irrigation, suction and drainage instrument in FIG1b;

FIG7a is a schematic side view of the handle of the surgical irrigation, suction and drainage instrument in FIG1a;

FIG7 b is a schematic bottom view of the handle in FIG7 a , with the cover and the water control device removed;

Fig. 7c is a schematic cross-sectional view of the handle in Fig. 7b at the section plane H-H;

FIG7d is a schematic perspective view of the handle in FIG7b;

FIG8 is a schematic enlarged view of a portion II of the surgical irrigation, suction and drainage instrument in FIG1c;

FIG9a is a perspective view of the water control device of the surgical irrigation, suction and drainage instrument in FIG1a;

FIG9b is a side view of the water control device in FIG9a;

FIG9c is another side view of the water control device in FIG9a;

FIG10 a is a perspective view of a button of the water control device in FIG9 a ;

Fig. 10b is a side view of the button in Fig. 10a;

FIG10c is another side view of the button in FIG10a;

FIG11a is a perspective view of the base of the water control device in FIG9a;

FIG. 11 b is a side view of the base of FIG. 11 a; and

FIG. 11c is another side view of the base in FIG. 11a .

DETAILED DESCRIPTION

The following describes an illustrative embodiment of the surgical irrigation, suction and drainage instrument 1 and its tube assembly 2 of the utility model. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but all the 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 utility model unclear. Of course, 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 restrictions need to be followed, and these specific goals may vary from practical application to practical application. In addition, it should be understood that such specific implementation decisions are complex and time-consuming, but they are routine tasks for ordinary technicians in this field who benefit from the utility model.

The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of such terms and phrases by those skilled in the relevant art. Consistent usage of a term or phrase herein is not intended to imply a special definition of the term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art. 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 listed in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

Unless required by the context, throughout the following specification, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open, inclusive sense, that is, such as "including but not limited to".

Next, a surgical irrigation, suction and drainage device 1 according to an embodiment of the utility model is exemplarily described in conjunction with Figures 1a to 11c. The surgical irrigation, suction and drainage device 1 can be used for irrigation and suction during neurosurgery cranial brain, spinal cord and spine surgery, ENT, orthopedics, head and neck and other professional microsurgery, and 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.

1a to 1c , the surgical irrigation, suction and drainage instrument 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 instrument 1 during surgery.

1 a to 2 b , the irrigation, suction and drainage instrument 1 may have a tube assembly 2 at the distal end, and the tube assembly 2 is detachable so as to be replaced with a tube assembly 2 of other specifications during surgery.

Referring to Fig. 2a, Fig. 2b, Fig. 4 and Fig. 5, the tube assembly 2 may have a suction tube 3, which may be inserted into the wound with its distal end to suck dirt during surgery. The suction tube 3 may be made of a metal material, such as medical stainless steel, and may have a soft hardness so that it can be bent into a desired shape when needed during surgery. The suction tube 3 may have a cylindrical tubular shape, and its distal end may be provided with an inner curling mouth or inner curling edge 5 (see Fig. 5) to prevent it from cutting weak tissues of the human body during surgery.

Referring to Fig. 2a and Fig. 2b, the tube assembly 2 may have a flushing tube 4, which can be placed close to or inserted into the wound with its distal end to flush the wound during surgery. The flushing tube 4 may be made of a metal material, such as medical stainless steel, and may have a soft hardness so that it can be bent into a desired shape at will during surgery. The flushing tube 4 may have a cylindrical tubular shape, and its distal end may be provided with a rounded mouth (not shown) to prevent it from cutting weak tissues of the human body during surgery. The diameter of the flushing tube 4 may be greater than the diameter of the suction tube 3, so that the flushing tube 4 can be, for example, coaxially and spaced apart radially and sleeved on the outside of the suction tube 3 to form a radial gap 6 (see Fig. 3a and Fig. 6). Therefore, the flushing tube 4 and the suction tube 3 can form a tube-in-tube structure, thereby realizing compact integration of the two and being separated from each other. The flushing liquid can flow through the radial gap 6 between the flushing tube 4 and the suction tube 3 and flow out from the distal opening of the flushing tube 4. The irrigation tube 4 can be arranged with its distal opening offset a certain distance backward or proximally relative to the distal opening of the suction tube 3, so that the irrigation liquid can flow out from the distal opening of the irrigation tube 4 in a jet-like manner and can be guided toward the wound along the outer circumference of the exposed portion of the suction tube 3. In addition, the irrigation liquid can be effectively prevented from being sucked back by the suction tube 3.

Referring to Fig. 2a, Fig. 2b and Fig. 3a, Fig. 3b, the tube assembly 2 may also have a hollow one-piece or composite tube holder 7, which is integrally formed, such as integrally injection molded. The tube holder 7 is used not only to fix the suction tube 3 but also to fix the flushing tube 4. To this end, 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.

3a, the suction tube fixing seat section 8 may have a multi-step structure in the center of its inner surface, which surrounds a cylindrical suction tube fixing space with different diameters provided for the suction tube 3. The suction tube 3 may pass through the suction tube fixing space of the suction tube fixing seat section 8 with its proximal end and be fixed in the suction tube fixing space by means of an adhesive (e.g., AB glue).

To this end, the suction tube fixing space may include, from the proximal end to the distal end, a truncated cone-shaped bell mouth 10; a first cylindrical space 11 adjacent to the bell mouth 10; a second cylindrical space 12 adjacent to the first cylindrical space 11 and having a smaller diameter than the first cylindrical space 11; and a third cylindrical space 13 adjacent to the second cylindrical space 12 and having a smaller diameter than the second cylindrical space 12. The outer diameter of the suction tube 3 may be slightly smaller than the diameter of the second cylindrical space 12 and the diameter of the third cylindrical space 13. Thus, referring to FIG. 3a, the suction tube 3 may be inserted through the second cylindrical space 12 and the third cylindrical space 13.

A glue receiving portion 14 is formed between the outer surface of the suction tube 3 and the inner surface of the suction tube fixing seat section 8 defining the first cylindrical space 11. Glue can be easily injected into the glue receiving portion 14 through the bell mouth 10, for example, when the suction tube fixing seat section 8 is placed vertically upward, so as to glue the suction tube 3 and the suction tube fixing seat section 8 to each other. The second cylindrical space 12 is mainly responsible for radially constraining the suction tube 3 when the suction tube 3 is installed.

The third cylindrical space 13 can be surrounded by a suction tube axial limiting step 15 specially designed here. Here, the suction tube axial limiting step 15 can be used to limit the axial position of the suction tube 3. For this purpose, referring to Figures 3a and 4, a surface structure 16, such as knurling or mesh, which cooperates with the suction tube axial limiting step 15 can be provided on the proximal outer circumference of the suction tube 3. The surface structure 16 protrudes radially outward from the outer circumference of the suction tube 3. The surface structure 16 can increase the friction force in case of potential displacement or rotation, and increase the connection firmness between the suction tube 3 and the suction tube fixing seat section 8. The surface structure 16 is arranged on the entire annular outer circumference 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 when the suction tube fixing seat section 8 is placed vertically upward, the suction tube 3 can be stopped by its surface structure 16 on the step surface (the left side surface of the step in FIG. 3 a) of the suction tube axial limiting step 15. This facilitates the subsequent glue injection process into the suction tube fixing space.

In order to facilitate the understanding of the relative sizes involved above, an example is given as follows: assuming that the outer diameter of the suction tube 3 is 3 mm, the diameter of the first cylindrical space 11 can be set to 3.8 mm, the diameter of the second cylindrical space 12 can be set to 3.3 mm, the diameter of the surface structure 16 can be set to 3.2 mm, and the diameter of the third cylindrical space 13 can be set to 3.1 mm or 3.05 mm, which ensures that the suction tube portion without the surface structure 16 can pass through, but the surface structure 16 cannot pass through. It should be understood that the above sizes are only exemplary and not restrictive.

In addition, the suction tube fixing seat section 8 is not provided with an external thread 23 on its outer circumference, but is provided with an annular groove 18 at its proximal end for accommodating the radial sealing ring 17. Thus, the sealing ring 17 can be removed and installed together with the tube fixing seat 7, thereby facilitating the overall replacement of the tube assembly 2.

Referring to Fig. 3a and Fig. 3b, at the far side of the suction tube fixing seat section 8, the tube fixing seat 7 may have a liquid inlet section 19, which allows the flushing liquid 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 fixing seat 7. To this end, the liquid inlet section 19 has a radially extending liquid inlet hole 21 immediately after the suction tube axial limit step 15, and the flushing liquid can enter the liquid inlet space 20 inside the tube fixing seat 7 from the outside of the tube fixing seat 7 through the liquid inlet hole 21. Two radially opposed liquid inlet holes 21 are shown here, but other numbers and other arrangements of liquid inlet holes 21 are also conceivable. The liquid inlet hole 21 is elliptical here, but other shapes such as round, square, etc. are also conceivable. In addition, the tube fixing seat 7 is provided with an annularly extending guide groove 22 on its outer circumference. The guide groove 22 extends through the liquid inlet hole 21 and intersects therewith. The flushing liquid can be guided to reach the liquid inlet hole 21 via the guide groove 22 and enter the liquid inlet space 20 from the liquid inlet hole 21.

Based on the existence of the liquid inlet hole 21 (whose aperture is usually small), the above-mentioned surface structure 16 of the suction tube 3 and the suction tube axial limiting step 15 of the suction tube fixing seat section 8 can cooperate with each other to play the above-mentioned axial limiting role of the suction tube 3, and can also play the following unexpected technical effect: on the one hand, the suction tube axial limiting step 15 can block the liquid glue from the glue receiving portion 14 to the liquid inlet hole 21 on the tube fixing seat 7 through the second cylindrical space 12, and on the other hand, the suction tube axial limiting step 15 can axially stop the suction tube 3 through the surface structure 16 to prevent the surface of the suction tube 3 with glue from approaching the liquid inlet hole 21 during assembly. Both aspects are conducive to preventing the liquid inlet hole 21 from being undesirably blocked by glue and affecting the entry of the flushing liquid. This has been proven to be very beneficial in practice, which solves the problem that the liquid inlet hole 21 is easily blocked by glue during assembly, thereby ensuring the flushing function.

3a and 3b, the tube holder 7 may be provided with an external thread 23 on its outer circumference at the far side of the liquid inlet hole 21. The external thread 23 is basically located on the outer circumference of the liquid inlet section 19.

Referring to Fig. 3a, the flushing tube fixing seat section 9 can be arranged at 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 provided for the flushing tube 4. The flushing tube 4 can be inserted into the flushing tube fixing space of the flushing tube fixing seat section 9 with its proximal end and fixed in the flushing tube fixing space by means of an adhesive (e.g., AB glue).

To this end, the irrigation tube fixing space may include, from the distal end to the proximal end, a truncated cone-shaped bell mouth 24, a first cylindrical space 25 adjacent to the bell mouth 24, and a second cylindrical space 26 adjacent to the first cylindrical space 25 and having a smaller diameter than the first cylindrical space 25. The outer diameter of the irrigation tube 4 may be slightly smaller than the diameter of the second cylindrical space 26, so that, referring to FIG. 3a , the irrigation tube 4 may be inserted into the first cylindrical space 25 and the second cylindrical space 26.

A glue receiving portion 27 is formed between the outer surface of the flushing pipe 4 and the inner surface of the flushing pipe fixing seat section 9 that defines the first cylindrical space 25. Glue can be easily injected into the glue receiving portion 27 through the bell mouth 24, for example, when the flushing pipe fixing seat section 9 is placed vertically upward, so as to glue the flushing pipe 4 and the flushing pipe fixing seat section 9 to each other. The second cylindrical space 26 is mainly responsible for radially constraining the flushing pipe 4 when the flushing pipe 4 is installed.

Here, the second cylindrical space 26 of the flushing tube fixing seat section 9 can be directly adjacent to the above-mentioned liquid inlet space 20, and the diameter of the former is larger than the diameter of the latter, so the two can form a step surface at the transition. 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 mesh, provided on the proximal outer peripheral surface of the flushing tube 4 is larger than the diameter of the liquid inlet space 20, so that the above-mentioned step surface can form a step surface of the flushing tube axial limiting step 28 for axially limiting the flushing tube 4. The surface structure 16 can increase the friction force when there is potential displacement or rotation, and increase the connection firmness between the flushing tube 4 and the flushing tube fixing seat section 9. When the flushing tube 4 is inserted into the flushing tube fixing space of the flushing tube fixing seat section 9 from top to bottom when the flushing tube fixing seat section 9 is placed vertically upward, the flushing tube 4 can at least partially abut on the step surface of the flushing tube axial limiting step 28 (the right side of the step in Figure 3a) with its proximal end face. This facilitates the subsequent glue injection process into the fixing space of the flushing pipe.

As can be seen from Figure 3a, the liquid inlet space 20 is directly fluidically connected to the radial gap 6 between the suction tube 3 and the flushing tube 4, so that the flushing liquid entering the liquid 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.

In addition, referring to FIG3b, the pipe holder 7 or the flushing pipe holder section 9 thereof is designed with a surface structure 29, such as convex stripes or concave grooves, on its outer circumference for easy twisting, so that the pipe assembly 2 can be easily tightened or unscrewed by fingers from the handle 33 to be described below to replace the pipe assembly 2 with a different size. For this purpose, referring to FIG6, when the pipe holder 7 is screwed into the handle 33, the flushing pipe holder section 9 or its surface structure 29 is exposed to the outside and can be manipulated.

The flushing pipe fixing seat section 9 is provided with an annular groove 31 for accommodating a radial sealing ring 30 on its proximal side. The annular groove 31 is adjacent to the external thread 23 on the liquid inlet section 19 on the proximal side, and is adjacent to the flange 32 provided at the proximal end of the flushing pipe fixing seat section 9 on the distal side, that is, the annular groove 31 is bounded 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 fixing seat 7, thereby facilitating the overall replacement of the pipe assembly 2. In FIG. 3a, the outer diameter of the radial sealing ring 30 is larger than the outer diameter of the external thread 23 and smaller than the outer diameter of the flange 32.

Referring to Fig. 7a to Fig. 7d, the irrigation, suction and drainage device 1 may have a handle 33 for the operator to hold during surgery. The handle 33 may be made of plastic to reduce costs. The handle 33 may have a streamlined finger kneading surface to meet ergonomic requirements and increase the comfort of holding. The handle 33 may be partially provided with a soft rubber structure to increase the anti-slip force of holding.

6 and 7 c , the handle 33 may have a cylindrical receiving cavity 35 with an internal thread 34 at its distal end, and the tube assembly 2 may be threadedly connected in the receiving cavity 35 with its tube fixing seat 7 .

The threaded connection has been proven to be very advantageous in practice. Compared with the plug-in connection, although different specifications and models of the tube assembly 2 can be replaced during surgery, the plug-in connection tube assembly 2 is not firmly fixed. Because it is found in practice that when the wound tissue needs to be pulled, pulled, and pressed during surgery, the connection of the plug-in connection is easy to loosen and fall off, causing trouble to the doctor.

The irrigation, suction and drainage instrument 1 may have a suction branch 36, which can be used to suction 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.

The suction branch 36 may include the above-mentioned suction tube 3 at its distal end. The suction tube 3 may be fixed in the handle 33 via a tube fixing seat 7.

Referring to FIG. 6 and FIG. 7c, the suction branch 36 may include an elongated cavity 37 disposed in the handle 33, the cavity 37 may be disposed proximal to the accommodating cavity 35 or the suction tube 3, and may be in fluid communication with the suction tube 3 at its distal end. A through pressure regulating hole 38 is provided on the wall of the handle 33 surrounding the cavity 37, and the pressure regulating hole 38 may connect the cavity 37 to the atmosphere. The pressure regulating hole 38 may have a substantially teardrop shape and may be disposed laterally to the handle 33. During the suction operation, when a finger, such as a thumb, presses all the pressure regulating holes 38, the suction pressure is the maximum; when the finger does not press the pressure regulating hole 38, the suction pressure is the minimum; when the area of the pressure regulating hole 38 pressed by the finger becomes smaller and smaller, the suction pressure gradually changes from large to small. Therefore, when suctioning dirt during surgery, the operator can change the suction negative pressure or suction pressure in the suction branch 36 by changing the pressing area of his finger on the pressure regulating hole 38, thereby changing the speed of suctioning dirt from the wound.

Referring to Fig. 1a to Fig. 1c, the suction branch 36 may include a suction connection tube 39 disposed on the proximal side of the handle 33. The distal end portion of the suction connection tube 39 may be a soft and elastic medical rubber (silicone) tube, so that the handle 33 is comfortable to hold without twisting the wrist or getting stuck. The suction connection tube 39 may be sleeved with its distal end on the hollow cylindrical protrusion 55 (see Fig. 7a) at the proximal end of the handle 33 and communicate with the cavity 37 fluid. Thus, the suction connection tube 39 may be in fluid communication with the suction tube 3 via the cavity 37. The suction connection tube 39 may be connected to a suction machine (not shown) for applying negative pressure via a three-way joint 40. When the suction operation is normally performed via the suction branch 36, the lateral interface 41 of the three-way joint 40 may be blocked by a plug 42 provided thereon to maintain the negative pressure in the suction branch 36. When the suction branch 36 cannot perform normal suction operation due to being blocked by dirt, the side interface 41 can be used to connect another irrigation, suction and drainage device 1 of the utility model (or a non-disposable irrigation, suction and drainage device in the operating room) to establish a backup suction branch to continue the operation and avoid interruption of the operation. At the same time, the suction connecting tube 39 can be clamped by a flow stop clamp 43 (such as a Robert clamp) provided thereon to maintain the negative pressure in the backup suction branch 36. At this time, the suction branch 36 can be cleared by the nurse using a cleaning rod.

The irrigation, suction and drainage instrument 1 may have an irrigation branch 44 , which can be used to irrigate the wound with an irrigation fluid, such as sterile saline or sugar water, when necessary during surgery.

The irrigation branch 44 has an irrigation tube 4 at its distal end. Referring to FIG. 6 , the irrigation tube 4 can be fixed in the handle 33 by means of a tube fixing seat 7 at its proximal end.

Referring to FIG. 6 , the flushing branch 44 may include a two-way bent joint 45, which may be plugged into a radial through hole 46 of the handle 33 with its distal interface, and the radial through hole 46 may be arranged on the wall of the handle 33 surrounding the accommodating cavity 35, radially outside the guide groove 22 on the tube fixing seat 7 (see FIG. 7 b to FIG. 7 d). Thus, the two-way bent joint 45 may be fluidically connected to the guide groove 22 via the radial through hole 46. The two-way bent joint 45 may be plugged into a flushing hose 47 with its proximal interface (see FIG. 6 ), and the flushing hose 47 may extend substantially parallel to the elongated cavity 37 in the handle 33. The flushing hose 47 may be provided with a water control device 48 for controlling its opening and closing, which will be described in detail below.

7c and 7d, a cavity 49 can be provided at the lower part of the handle 33 parallel to the elongated cavity 37, and the cavity 49 can be open to the side and can be covered from the side by a matching cover 56 (FIG. 8), which is removed in FIGS. 7b and 7d.

Referring to Figures 1a to 1c, the flushing branch 44 may include a flushing connection tube 50 disposed proximal to the handle 33. The flushing connection tube 50 may be a plastic tube, such as a PVC tube. The flushing connection tube 50 may be connected to the proximal end of the flushing hose 47 via a two-way straight connector 51 at its distal end. The flushing connection tube 50 may be connected to a plastic needle 52 at its proximal end, and the plastic needle 52 may be plugged into an infusion bag (not shown) containing a flushing solution. If necessary, an infusion pressurization bag (not shown) may be sleeved on the outside of the infusion bag to provide sufficient flushing pressure. A flow rate regulator 53 may be provided on the flushing connection tube 50 for steplessly adjusting the flow rate of the flushing solution, which is suitable for use in delicate minimally invasive surgery, for example. It is also conceivable that a flow stop clamp (e.g., a Robert clamp) may be used instead of the flow rate regulator 53 to clamp the flushing connection tube 50.

The two-way bent joint 45 , flushing hose 47 , water control device 48 and two-way straight joint 51 can be arranged together in the cavity 49 of the handle, and except for the water control device 48 , they can all be laterally covered by the cover 56 .

In addition, referring to FIG. 6 , when the tube assembly 2 is screwed into the handle 33, the two sealing rings 17 and 30 are respectively sealed against the inner surfaces of the two ends of the accommodating chamber 35 of the handle 33. The sealing ring 30 at the distal end can seal the flushing liquid relative to the external environment to prevent the flushing liquid from overflowing into the external environment. To this end, the accommodating chamber 35 of the handle 33 is provided with a sealing matching conical surface 60 at its distal opening for preventing the flushing liquid from overflowing the handle 33, and the sealing ring 30 can be against the conical surface 60. The sealing ring 17 at the proximal end can seal the flushing liquid relative to the cavity 37 for the suction branch 36 to prevent the flushing liquid from overflowing into the cavity 37 of the suction branch 36. In order to better abut the proximal sealing ring 17 against the inner surface of the accommodating chamber 35, the accommodating chamber 35 can be provided with a cylindrical surface 54 on the proximal side of its internal thread 34 for sealing with the proximal sealing ring 17.

Next, the structure and working principle of the water control device 48 according to an embodiment of the present invention will be described in conjunction with FIG. 8 to FIG. 11 c .

The water control device 48 can be arranged on the handle 33 and can be operated by the operator from the same side of the handle 33 as the pressure regulating hole 38. For example, both can be operated by the thumb.

11a to 11c, the water control device 48 may have a base 132, which may have a cylindrical side wall and a bottom wall that closes the side wall at one end and is open at the other end. The side wall may have two opposite windows 133, and the flushing hose 47 may pass through the base 132 through the two windows 133. The bottom wall may have a cylindrical protrusion 134 formed centrally thereon.

10a to 10c, the 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 in the axial direction relative to the base 132. The body 142 may have a through-portion 136 that penetrates itself transversely to its longitudinal axis, and the flushing hose 47 may pass through the base 132 through the through-portion 136. The button 135 may have a cylindrical protrusion 137 extending downward at one end thereof, and a flat pressing portion 138 on the other opposite side thereof, and the pressing portion 138 may be pressed by an operator.

9a to 9c, the water control device 48 may have a spring mechanism 139, for example, configured as a compression spring, and the base 132 and the button 135 may cooperate with each other by means of the spring mechanism 139. 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, and may be mounted on the protrusion 134 of the base 132 with one end thereof and on the protrusion 137 of the button 135 with the other end thereof. The through-portion 136 of the button 135 may be oriented with its two opposite openings toward the two windows 133 of the base 132, respectively, so that the flushing hose 47 may pass through the window 133 of the base 132 and the through-portion 136 of the button 135 at the same time (see FIG. 8). The spring mechanism 139 can be configured such that, when the button 135 is not pressed, the spring mechanism 139 squeezes the button 135 away from the base 132 with its restoring force, so that the flushing hose 47 is 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 liquid therein; and when the button 135 is pressed, the button 135 can overcome the restoring force of the spring mechanism 139 and move toward the base 132 until the flushing hose 47 is no longer applied with shear force and is released, thereby releasing the flow of flushing liquid therein.

8 , when the water control device 48 is installed on the handle 33, the base 132 can be embedded and fixed in the cavity 49 of the handle 33, and the button 135 can be positioned laterally away from the cover 56 toward the handle 33. As described above, the operator can release the flushing liquid in the flushing hose 47 by pressing the button 135 in the side direction, and can stop the flow of the flushing liquid by releasing the button 135.

In some embodiments, the water control device 48 may also be configured as follows, that is, the button 135 may be configured as a cylindrical structure with one end open and the other end forming a pressing portion 138, and the button 135 may be sleeved with its open opening on the base 132 with a smaller diameter, 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 as follows, that is, the base 132 is not separated from the handle 33, but is a part of the handle 33, that is, the base 132 is formed by the internal structure of the handle 33.

Next, the operation process of the surgical irrigation, suction and drainage device 1 of the present invention is described, which includes the suction operation process and the irrigation operation process:

Suction operation process: do not press the button 135 of the water control device 48 with your finger to block the flushing branch 44 with the water control device 48, and at the same time press the pressure adjustment hole 38 of the handle 33 with your finger to generate suction pressure in the suction branch 36 to perform the waste suction operation. The size of the suction pressure can be controlled by adjusting the size of the area where the finger presses the pressure adjustment hole 38, thereby changing the speed of sucking the wound waste.

Flushing operation process: do not press the pressure regulating hole 38 with your finger, but press the button 135 of the water control device 48, so that the flushing hose 47 opens, and the flushing liquid flows through the flushing hose 47 and flows out from the radial gap 6 between the flushing tube 4 and the suction tube 3, thereby realizing the flushing function; release the button 135 with your finger, and the spring mechanism 139 prompts the water control device 48 to clamp the flushing hose 47, thereby stopping flushing.

Therefore, the main technical effects that can be achieved by the surgical irrigation, suction and drainage instrument 1 of the utility model include, but are not limited to: the internal space of the suction tube 3 is not occupied by the irrigation tube 4, the suction operation is unobstructed, and the probability of blockage is reduced; the irrigation branch 44 and the suction branch 36 are completely independent of each other in terms of fluid, and the possibility of the sucked liquid being washed back into the surgical wound and increasing the probability of secondary infection will no longer occur; the flow rate of the irrigation liquid can be achieved by pre-setting the size of the radial gap 6 between the suction tube 3 and the irrigation tube 4 according to the needs of the operation, and will not cause any influence on the suction function; the handle 33 is provided with a suction pressure adjustment hole 38, which can realize stepless adjustment of the suction pressure; the handle 33 is provided with a water control device 48 with a mechanical spring mechanism 139 , thereby realizing instant connection and closing of the flushing hose 47 and then the flushing branch 44, without adding additional special equipment, and the operation is easy, fast and reliable; the peripheral sharp edges of the front end surfaces of the suction tube 3 and the flushing tube 4 are both rounded and passivated to prevent tissue cutting; the suction tube 3 is also provided with an inner curling edge 5 at the mouth to prevent scratching of the tissue; since the diameter or volume of the part of the flushing, suction and drainage instrument 1 that enters the human body is smaller, more instruments can be accommodated in the surgical wound channel during surgery; the flushing, suction and drainage instrument 1 is fully sealed and aseptically connected, reducing the chance of infection; the finger kneading surface of the handle 33 is streamlined, which fully meets the requirements of ergonomics; most of the components of the flushing, suction and drainage instrument 1 are made of plastic, which is low in cost. The flushing, suction and drainage instrument 1 is disposable, eliminating the risk of cross-infection caused by repeated use; the tube assembly 2 can be detachably connected to the handle 33, which is convenient for replacing tube assemblies 2 of other specifications during or before surgery, such as tube assemblies 2 with longer, shorter, thicker, thinner, more curved and/or straighter flushing tubes 4 and suction tubes 3; the threaded connection between the tube assembly 2 and the handle 33 ensures that the two do not loosen each other during surgery, ensuring the accuracy of operation; the tube assembly 2 including the flushing tube 4, the suction tube 3 and the composite tube fixing seat 7 is independently arranged and self-contained, and different tube assemblies 2 can be designed into a variety of diameters or lengths. During the operation, different diameters or lengths can be replaced according to surgical needs to meet clinical surgical needs.

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 protection scope of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and all these modifications do not depart from the protection scope of the present invention.

Claims (22)

1. A tube assembly, the tube assembly being used for a surgical irrigation, suction and drainage instrument, the tube assembly having a distal end that is farther away from an operator when in use and a proximal end that is closer to the operator when in use, characterized in that the tube assembly comprises a suction tube, a flushing tube nested with the suction tube, and a tube fixing seat, the tube assembly being capable of being detachably connected to the surgical irrigation, suction and drainage instrument by means of the tube fixing seat, wherein the tube fixing seat comprises a suction tube fixing seat section and a flushing tube fixing seat section, the tube fixing seat being fixed to the suction tube via the suction tube fixing seat section, and being fixed to the flushing tube via the flushing tube fixing seat section, wherein the suction tube fixing seat section and the flushing tube fixing seat section are integrally formed. 2 . The tube assembly according to claim 1 , wherein the tube fixing seat is provided with an external thread, and the tube fixing seat can be detachably connected to the surgical irrigation, suction and drainage instrument in a threaded connection manner by means of its external thread. 3. The pipe assembly according to claim 2 is characterized in that the pipe fixing seat is provided with a surface structure on its outer circumference and far side of its external thread for facilitating force-applying screwing, and the surface structure can be grasped by an operator when the pipe assembly is installed. 4. The tube assembly according to claim 1 is characterized in that the tube fixing seat has a liquid inlet section, the liquid inlet section is arranged between the suction tube fixing seat section and the flushing tube fixing seat section, the liquid inlet section has a radially extending liquid inlet hole, and the flushing liquid can enter the radial inner side of the liquid inlet section from the radial outer side of the liquid inlet section by means of the liquid inlet hole. 5. The tube assembly according to claim 4 is characterized in that the flushing tube is sleeved on the suction tube, and the flushing tube fixing seat section is arranged on the distal side of the suction tube fixing seat section, wherein the flushing liquid can enter the liquid inlet space formed by the inner surface of the liquid inlet section and the outer surface of the suction tube from the radial outside of the liquid inlet section through the liquid inlet hole, and the liquid inlet space is connected to the radial gap fluid between the suction tube and the flushing tube. 6 . The pipe assembly according to claim 4 , wherein the liquid inlet section is provided with a circumferentially extending guide groove on its outer circumference, the guide groove extending through the liquid inlet hole and intersecting therewith. 7. The pipe assembly according to claim 4, characterized in that the pipe fixing seat is provided with an external thread on its outer circumference at the far side of the liquid inlet hole. 8. The tube assembly according to claim 1 is characterized in that the suction tube fixing seat section has an axial limiting step for the suction tube, and the suction tube is provided with a surface structure on its proximal outer peripheral surface, and the suction tube can be axially stopped on the radially extending step surface of the axial limiting step of the suction tube by means of its surface structure. 9. The tube assembly of claim 8, wherein the surface structure extends over the entire circumference of the suction tube. 10. The tube assembly according to claim 8 is characterized in that the suction tube fixing seat section is provided with a first space proximal to the axial limiting step of the suction tube and a second space which is adjacent to the first space distally and has a smaller diameter than the first space, wherein the suction tube passes through the first space and the second space, and the suction tube fixing seat section forms a glue receiving portion with the suction tube in the first space. 11 . The tube assembly according to claim 10 , wherein the suction tube fixing seat section is provided with a bell mouth opened outwardly adjacent to the first space at a proximal side of the first space. 12. The tube assembly according to claim 1 is characterized in that the flushing tube fixing seat section has an axial limiting step for the flushing tube, and the flushing tube can be axially stopped with its proximal end face on a radially extending step surface of the axial limiting step for the flushing tube. 13. The tube assembly according to claim 12 is characterized in that the flushing tube fixing seat section is provided with a first space on the distal side of the axial limiting step of the flushing tube and a second space which is adjacent to the first space on the proximal side of the first space and has a smaller diameter than the first space, wherein the flushing tube passes through the first space and the second space, and the flushing tube fixing seat section forms a glue receiving portion with the flushing tube in the first space. 14 . The pipe assembly according to claim 13 , wherein the flushing pipe fixing seat section is provided with a bell mouth that is open outwardly and is adjacent to the first space at a distal side of the first space. 15. The pipe assembly according to claim 4, characterized in that the pipe fixing seat is provided with an annular groove for accommodating a radial sealing ring on its outer circumference near the liquid inlet hole. 16. The pipe assembly according to claim 4, characterized in that the pipe fixing seat is provided with an annular groove for accommodating a radial sealing ring on its outer circumference at the far side of the liquid inlet hole. 17. The pipe assembly according to claim 7, wherein the pipe fixing seat is provided with an annular groove for accommodating a radial sealing ring on the outer circumference thereof at the distal side of the external thread. 18. A tube assembly kit, characterized in that the tube assembly kit comprises at least two tube assemblies according to any one of claims 1 to 17, wherein different tube assemblies differ from each other in the length and/or diameter and/or curvature of their suction tubes and/or irrigation tubes. 19. A surgical irrigation, suction and drainage device, characterized in that the surgical irrigation, suction and drainage device comprises: a handle that can be held by an operator during surgery; and The tube assembly according to any one of claims 1 to 17 or the tube assembly kit according to claim 18, wherein the tube assembly or each tube assembly of the tube assembly kit is detachably connectable to the handle. 20 . The surgical irrigation, suction and drainage instrument according to claim 19 , wherein the tube fixing seat of the tube assembly can be fixed with its external thread in the accommodating cavity with the internal thread of the handle. 21. The surgical irrigation, suction and drainage instrument according to claim 20 is characterized in that the tube fixing seat is provided with a surface structure on the outer periphery of the tube fixing seat and on the far side of the external thread for facilitating force application and screwing, and when the tube assembly is in the installed state, the surface structure is at least partially exposed from the accommodating cavity and can be grasped by the operator. 22. The surgical irrigation, suction and drainage instrument according to claim 20, characterized in that the accommodating cavity of the handle is provided with a conical surface for sealing at the opening of the distal end thereof.