Orthopedic surgery suction tube facilitating recovery of bone particles

Abstract

The application provides an orthopedic surgery suction tube convenient for recovering bone particles, which comprises an outer tube and an inner tube coaxially connected, characterized in that the inner tube comprises a first end face, a second end face, a tube wall and a drainage tube, the first end face is provided with a connecting hole in the middle, the drainage tube is connected with the connecting hole, and an outer port of the drainage tube extends out of the first end face and is connected with a suction port in a butt joint mode; an inner port of the drainage tube extends to a middle position of the inner tube to form a residue storage cavity. The inner tube is used as a filtering device, so that the filtering holes are not easily blocked, and the operation efficiency and effect are effectively improved; moreover, the blood mixture will enter the residue storage cavity due to gravity, the blood will flow to the outer tube from the filtering holes and be finally sucked out, and the bone particles or tissues will be accumulated and stored in the residue storage cavity for subsequent recovery of the bone particles, fusion and reimplantation, and the blood sucked out can be recovered, so that the operation effect can be effectively improved, the risk of infection can be reduced, and the operation cost can be reduced.

Description

Technical Field

[0001] This invention application relates to the technical field of medical auxiliary devices, specifically to an orthopedic surgical suction tube that facilitates the recovery of bone fragments. Background Technology

[0002] Suction tubes are essential tools in surgical procedures. They are mainly used in orthopedic and thoracic surgeries to drain fluids or blood from the affected area during surgery, thus ensuring a clear surgical field.

[0003] During the suction process, bone fragments or other tissues inevitably get drawn into the suction tube. These fragments and tissues can easily cause blockages, hindering suction and affecting surgical outcomes. Currently, some suction tubes incorporate filters to address this issue. However, the surface of these filters is perpendicular to the suction direction. As more bone fragments and tissue accumulate on the filter surface, the filter pores gradually become clogged, eventually causing the suction tube to lose its suction capacity and similarly impacting surgical results.

[0004] Patent application CN11956876A, entitled "A Surgical Anti-Clogging Suction Tube and Anti-Clogging Method," discloses a design using an inner tube as a filter with a rotating component within it. This rotating component is designed to cut and refine bone particles and tissue entering the inner tube, allowing the refined bone particles and tissue to be drawn out along with the blood through the filter holes of the inner tube and collected in an external collection device. While this design effectively prevents the filter holes from clogging, the fragmented bone particles and tissue cannot be recycled, and the blood in the external collection device is also difficult to recover (autologous blood recovery).

[0005] Therefore, it is essential to develop an orthopedic surgical suction tube that facilitates the recovery of bone fragments. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems and shortcomings by providing an orthopedic surgical suction tube that facilitates the recovery of bone fragments, effectively solving the problems of existing suction tubes that are prone to filter clogging and the inability to easily recover the suctioned bone fragments and tissues.

[0007] The technical solution of this invention is implemented as follows:

[0008] This invention discloses an orthopedic surgical suction tube for convenient bone fragment recovery, comprising an outer tube and an inner tube, wherein the inner tube is coaxially connected to the outer tube. The inner tube comprises: a first end face facing the suction port of the outer tube; a second end face opposite to the first end face; a tube wall surrounding the first and second end faces, the tube wall having filter holes; a drainage tube penetrating the middle of the first end face, the outer port of the drainage tube extending beyond the first end face and engaging with the suction port; and an inner port of the drainage tube extending to the middle of the inner tube, thereby forming a slag storage cavity between the drainage tube extending into the inner tube, the first end face, and the tube wall.

[0009] In some embodiments, the outer tube includes a first tube body and a second tube body, the first tube body being integrated with the suction port, and the second tube body being integrated with the negative pressure port. The first tube body and the second tube body are connected in a way that facilitates disassembly and assembly.

[0010] In some embodiments, the pipe wall includes a first perimeter and a second perimeter, the first perimeter being integrally connected to the first end face, the second perimeter being integrally connected to the second end face, and the open end of the first perimeter and the open end of the second perimeter being connected in a way that facilitates disassembly and assembly. The slag storage chamber is formed by the drainage pipe extending into the inner pipe, the first end face, and the first perimeter.

[0011] In some embodiments, the inner port of the drainage tube extends beyond the opening end of the first perimeter.

[0012] Furthermore, the connection between the open end of the first perimeter and the open end of the second perimeter is a threaded connection.

[0013] In some embodiments, the second perimeter is fixedly connected to the second tube body, and the second perimeter is detached from the first perimeter while the second tube body is detached from the first tube body.

[0014] In some embodiments, the outer port of the drainage tube is fixedly connected to the suction port of the outer tube, so that the inner tube and the outer tube are coaxially connected.

[0015] In some embodiments, the second end face is provided with a small hole, the diameter of which is smaller than the diameter of the filter hole.

[0016] In some embodiments, a slag-removing tool is connected to the middle position of the outer end face of the second end face.

[0017] In some embodiments, the outer tube has an anti-condensation pipe interface on the end face facing the negative pressure port.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention features an outer tube and an inner tube, with filter holes on the inner tube wall to function as a filter. A drainage tube extends from its inner end to the middle of the inner tube, forming a storage cavity. Blood drawn from the affected area enters the inner tube through the inner end of the drainage tube. Under gravity, the blood mixture first reaches the storage cavity, where it flows through the filter holes around the cavity into the outer tube and is eventually drawn out of the suction tube. Bone fragments or tissue accumulate in the storage cavity due to their own weight and the obstruction of the filter holes, allowing for subsequent bone fragment recovery for reimplantation and fusion. Furthermore, the drawn blood is relatively clean, enabling autologous blood recovery, thus effectively improving surgical efficacy, reducing infection risk, and lowering surgical costs.

[0020] 2. Since there are no filter holes on the first end face, the bone particles or tissues deposited in the sludge storage chamber will not be easily stirred up by the blood in the outer or inner tube and float to the surface, ensuring that the filter holes located above the sludge storage chamber are not easily blocked.

[0021] 3. Since there are no filter holes on the second end face, the inner port of the drainage tube and the negative pressure port of the outer tube cannot form convection. The suction force will come out from the numerous filter holes in the tube wall. That is, the suction will have a lateral extension buffering process. Therefore, the blood mixture flowing out from the inner port of the drainage tube will not directly impact the negative pressure port. Instead, it will enter the residue chamber due to its own weight during the lateral buffering process of bone particles or tissue. Therefore, it also effectively prevents the filter holes located above the residue chamber from being blocked, ensuring smooth suction and improving surgical efficiency.

[0022] 4. Since both the outer and inner tubes are designed to be detachable and openable, both the outer and inner tubes can be opened after the operation, making it easier to remove and recover bone particles or tissues from the storage cavity; or if too much bone particles or tissues have accumulated in the storage cavity during the suction process, it can also facilitate the cleaning of bone particles or tissues from the storage cavity midway.

[0023] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0026] Figure 3 This is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0027] Figure 4 This is a cross-sectional structural diagram of Embodiment 3 of the present invention;

[0028] Figure 5 This is a schematic diagram of the exploded structure of the inner tube according to Embodiment 3 of the present invention;

[0029] Figure 6 This is a cross-sectional structural diagram of Embodiment 4 of the present invention;

[0030] Figure 7 This is a schematic diagram of the connection structure between the second tube body and the second perimeter in Embodiment 4 of the present invention;

[0031] Figure 8 This is a cross-sectional structural diagram of Embodiment 5 of the present invention;

[0032] Figure 9 This is a schematic diagram of the exploded structure of the inner tube in Embodiment 5 of the present invention.

[0033] Figure label:

[0034] Outer tube 1;

[0035] First tube body 11, second tube body 12, suction port 13, negative pressure port 14, anti-coagulation tube interface 15;

[0036] Inner tube 2;

[0037] First end face 21, second end face 22, pipe wall 23, drainage pipe 24;

[0038] First border 231, Second border 232

[0039] External port 241, internal port 242;

[0040] Slag storage chamber 3;

[0041] Filter hole 4;

[0042] Small hole 5;

[0043] 6 cleaning tools;

[0044] Connecting plate 7;

[0045] Rotary connection 8;

[0046] Internal thread 81, external thread 82;

[0047] Connect 9;

[0048] Insertion edge 91, slot 92, protrusion 93, groove 94. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of this invention, it should be understood that the terms "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0051] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "fitting," "connected," "linked," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] The following description, in conjunction with the accompanying drawings, describes the orthopedic surgical suction tube for convenient bone particle recovery according to the present invention.

[0054] This invention relates to an orthopedic surgical suction tube for convenient bone fragment recovery, comprising an outer tube 1 and an inner tube 2, the inner tube 2 being coaxially connected to the outer tube 1. The inner tube 2 includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21 faces the suction port 13 of the outer tube 1. The second end face 22 is disposed opposite to the first end face 21. The tube wall 23 surrounds the first end face 21 and the second end face 22, and the tube wall 23 is provided with a filter hole 4. The drainage tube 24 passes through the middle position of the first end face 21, and the outer port 241 of the drainage tube 24 extends out of the first end face 21 and connects with the suction port 13. The inner port 242 of the drainage tube 24 extends to the middle position of the inner tube 2, so that the drainage tube 24 extending into the inner tube 2, the first end face 21, and the tube wall 23 form a slag storage cavity 3. This invention uses the inner tube 2 as a filtration device. Therefore, the blood mixture drawn from the affected area enters the inner tube 2 through the inner port 242 of the drainage tube 24. At this time, under the action of gravity, the blood mixture will first reach the position of the storage chamber 3, and the blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1 and finally be drawn out of the suction tube. The bone particles or tissues accumulate and are stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4, so as to be recovered from the bone particles for reimplantation and fusion. Moreover, the blood drawn out is relatively clean, so autologous blood can also be recovered, thereby effectively improving the surgical efficacy, reducing the risk of infection, and reducing the cost of surgery.

[0055] Understandably, the first end face 21 of the present invention does not have any holes. Therefore, under negative pressure, the blood in the outer tube 1 will not flow back into the inner tube 2 from the first end face 21. As a result, the bone particles or tissue deposited in the residue storage cavity 3 will accumulate on the inner surface of the first end face 21 and will not be easily stirred up and floated by the blood in the outer tube 1 or the inner tube 2, thus ensuring that the filter hole 4 located above the residue storage cavity 3 is not easily blocked.

[0056] The second end face 22 of this invention may not have any holes. The advantage of this design is that the outlet of the inner port 242 of the drainage tube 24 and the negative pressure port 14 of the outer tube 1 cannot form convection, and the adsorption force will come out from the numerous filter holes 4 of the tube wall 23. That is, the attraction will have a laterally extending buffering process, such as... Figure 2 As indicated by the arrow, the blood mixture flowing out from the inner port 242 of the drainage tube 24 will not directly impact the negative pressure port 14. Instead, it will enter the residue storage chamber 3 due to its own weight during the lateral buffering process of bone particles or tissue. Therefore, it can effectively prevent the filter hole 4 located above the residue storage chamber 3 from being blocked, ensuring smooth suction and improving surgical efficiency.

[0057] In some embodiments, the second end face 22 may also be provided with a small hole 5, and the diameter of the small hole 5 is smaller than the diameter of the filter hole 4. This design ensures that the negative pressure of the suction tube is sufficient, while also ensuring that the adsorption force at the second end face 22 is not too strong, which would prevent bone particles or tissue from settling into the residue storage chamber 3. In further embodiments, the small hole 5 may also be designed as an adjustable-size hole.

[0058] To facilitate postoperative retrieval of bone particles or tissue from the inner tube 2, in some embodiments, the outer tube 1 is designed as a detachable tube. Disassembly can be achieved by separating the left and right halves, separating the upper and lower sections, or other separation methods. For example... Figure 3 , Figure 4 , Figure 6 and Figure 8 In the examples shown, the outer tube 1 includes a first tube body 11 and a second tube body 12, wherein the first tube body 11 is integrally connected to the suction port 13, and the second tube body 12 is integrally connected to the negative pressure port 14. The first tube body 11 and the second tube body 12 are connected in a way that facilitates easy assembly and disassembly. By designing the outer tube 1 as a detachable structure, it can be opened after the operation, making it easier to remove the inner tube 2 from the outer tube 1.

[0059] Understandably, the first tube 11 and the suction port 13 can be integrally molded, and the second tube 12 and the negative pressure port 14 can also be integrally molded. The connection method between the first tube 11 and the second tube 12 can be screw-on 8, plug-in 9, snap-fit, etc., where... Figure 3 and Figure 6 The connection shown is a screw-on connection 8, that is, the internal thread 81 and the external thread 82 are screwed together 8. Figure 4 and Figure 8 The connection method shown is a plug-in connection 9, that is, one tube body is provided with a plug edge 91, and the outer wall of the plug edge 91 is provided with a protruding ridge 93; the other tube body is provided with a slot 92, and the inner wall of the slot 92 is provided with a groove 94. After the plug edge 91 and the slot 92 are plugged in 9, the protruding ridge 93 is embedded in the groove 94.

[0060] Furthermore, to facilitate the recovery of bone particles or tissue from the inner tube 2, in some embodiments, the inner tube 2 is also designed as a detachable tube. The disassembly method can be separation of the left and right halves of the tube, separation of the upper and lower parts, or other separation methods. For example... Figure 4 , Figure 6 and Figure 8In the examples shown, the tube wall 23 includes a first perimeter 231 and a second perimeter 232. The first perimeter 231 is integrally connected to the first end face 21, and the second perimeter 232 is integrally connected to the second end face 22. The open ends of the first perimeter 231 and the second perimeter 232 are connected in a manner that facilitates easy assembly and disassembly. By designing the inner tube 2 as a detachable structure, after surgery, both the outer tube 1 and the inner tube 2 can be opened, allowing the bone particles or tissue in the storage cavity 3 to be directly poured out for recycling.

[0061] Understandably, the first perimeter 231 and the first end face 21 can be integrally formed. In this case, the slag storage cavity 3 is jointly formed by the drainage pipe 24 extending into the inner tube 2, the first end face 21, and the first perimeter 231. Figure 5 As shown. The second perimeter 232 and the second end face 22 can also be integrally formed. The connection method between the first perimeter 231 and the second perimeter 232 can be screw-on 8, plug-in 9, snap-on, etc., where... Figure 4 and Figure 6 The connection shown is a threaded connection 8, that is, the internal thread 81 is screwed into the external thread 82. Figure 8 The connection method shown is a plug-in connection 9, that is, one tube body is provided with a plug edge 91, and the outer wall of the plug edge 91 is provided with a protruding ridge 93; the other tube body is provided with a slot 92, and the inner wall of the slot 92 is provided with a groove 94. After the plug edge 91 and the slot 92 are plugged in 9, the protruding ridge 93 is embedded in the groove 94.

[0062] To facilitate the removal of bone fragments or tissue from the slag storage chamber 3 after the inner tube 2 is disassembled, in some embodiments, the inner port 242 of the drainage tube 24 can extend beyond the opening end of the first perimeter 231, that is, the length of the inner port 242 of the drainage tube 24 is higher than the opening end of the first perimeter 231. The advantage of this design is that after the inner tube 2 is disassembled, the inner port 242 of the drainage tube 24 can be brought into contact with the container holding the recovered bone fragments or tissue with the inner port 242 facing downward and gently tapped against each other, so that the bone fragments or tissue adhering to the slag storage chamber 3 can be shaken off and fall into the container.

[0063] In addition to the methods mentioned above for easier removal of bone fragments or tissue, in situations such as... Figure 8 and Figure 9 In the example shown, a cleaning tool 6 is connected to the middle of the outer end face of the second end face 22 of the inner tube 2. The function of the cleaning tool 6 is to allow it to be inserted into the slag storage cavity 3 after the second perimeter 232 is separated from the first perimeter 231, and to remove bone particles or tissue adhering to the slag storage cavity 3. In this example, the cleaning tool 6 is in the shape of a spoon, but it can also be other shapes, such as tweezers or a scraper.

[0064] Since the outer tube 1 and inner tube 2 are each designed to be detachable, disassembly requires two steps. To improve efficiency and save time, in some embodiments, the second perimeter 232 is fixedly connected to the second tube body 12. This allows the second perimeter 232 to be simultaneously detached from the first perimeter 231 when the second tube body 12 is detached from the first tube body 11. The fixed connection between the second perimeter 232 and the second tube body 12 can be achieved through a connecting plate 7, such as... Figure 7 In the example shown, the outer wall of the second perimeter 232 and the inner wall of the second tube 12 are connected by three connecting plates 7 respectively, thereby connecting the second perimeter 232 and the second tube 12 into one unit.

[0065] Understandably, if the second tube 12 is disassembled along with the second perimeter 232, then the connection method between the second tube 12 and the first tube 11 must be the same as the connection method between the second perimeter 232 and the first perimeter 231. For example, both could be threaded connections 8 in the same direction, or both could be plug-in connections 9. Only in this way can the bone particles or tissue in the slag storage chamber 3 be removed in a single disassembly.

[0066] To achieve a fixed connection between the inner tube 2 and the outer tube 1, while ensuring the airtightness of the connection between the drainage tube 24 and the suction port 13, in some embodiments, the outer port 241 of the drainage tube 24 is fixedly connected to the suction port 13 of the outer tube 1, so that the inner tube 2 and the outer tube 1 are coaxially connected. The drainage tube 24 and the suction port 13 can be fixedly connected in a non-detachable manner, such as by integral molding, ultrasonic welding, or adhesive bonding, or they can be fixedly connected in a detachable manner, such as by screwing 8, plugging 9, or snap-fitting.

[0067] In order to prevent the blood from coagulating in the suction tube during the suction process, in some embodiments, an anticoagulant tube interface 15 is provided on the end face of the outer tube 1 facing the negative pressure port 14. The anticoagulant tube interface 15 is used to connect the anticoagulant solution.

[0068] The following is a detailed description of specific embodiments.

[0069] Example 1:

[0070] like Figure 2As shown, the suction tube in this embodiment includes an outer tube 1 and an inner tube 2, both of which are integral and inseparable. The inner tube 2 includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21, the second end face 22, and the tube wall 23 are integrally formed into a cylindrical inner tube. A filter hole 4 is formed on the tube wall 23. The drainage tube 24 passes through the middle of the first end face 21, with its outer port 241 extending beyond the first end face 21 and its inner port 242 extending to the middle of the inner tube 2 to form a slag storage chamber 3. In this embodiment, neither the first end face 21 nor the second end face 22 of the inner tube 2 has small holes 5. During production, the outer port 241 of the drainage tube 24 of the inner tube 2 is ultrasonically welded to the suction port 13 of the outer tube 1, and then the negative pressure port 14 of the outer tube 1 is ultrasonically welded to the outer tube 1.

[0071] In use, connect the suction port 13 of the outer tube 1 to the suction tube, and connect the negative pressure port 14 of the outer tube to the negative pressure device. Insert the suction tube into the affected area, making the suction tube vertical or the suction port 13 tilted downwards. Then turn on the negative pressure device to draw the blood mixture oozing from the affected area into the drainage tube 24, and out from the inner port 242 of the drainage tube 24. At this time, the blood mixture will fall into the storage chamber 3 due to its own weight. The blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1, and finally be drawn out of the suction tube from the outer tube 1 through the negative pressure port 14. Bone particles or tissue will accumulate and be stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4. After use, remove the suction tube and the negative pressure tube, and then use a cutting tool to cut the suction tube in the middle to recover the bone particles for reimplantation and fusion.

[0072] Example 2:

[0073] like Figure 3As shown, the suction tube of this embodiment includes an outer tube 1 and an inner tube 2. The outer tube 1 includes a first tube body 11 and a second tube body 12. The first tube body 11 is connected to the suction port 13 as a whole, and the second tube body 12 is connected to the negative pressure port 14 as a whole. The first tube body 11 and the second tube body 12 are connected by a threaded connection 8. An anticoagulant tube interface 15 is opened on the end face of the second tube body 12 facing the negative pressure port 14. The anticoagulant tube interface 15 is used to connect the anticoagulant liquid. The inner tube 2 of this embodiment includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21, the second end face 22, and the tube wall 23 are integrally formed into a cylindrical inner tube. A filter hole 4 is opened on the tube wall 23. The drainage tube 24 passes through the middle of the first end face 21. The outer port 241 of the drainage tube 24 extends out of the first end face 21, and the inner port 242 extends to the middle of the inner tube 2 to form a slag storage chamber 3. In this embodiment, the inner tube 2 is an integral tube body. Its first end face 21 is not provided with holes, and its second end face 22 is provided with a small hole 5 smaller than the diameter of the filter hole 4. The outer port 241 of the drainage tube 24 is also connected to the suction port 13 of the outer tube 1 by a threaded connection 8, so the inner tube 2 can be disassembled relative to the outer tube 1.

[0074] In use, connect the suction port 13 of the outer tube 1 to the suction tube, and connect the negative pressure port 14 of the outer tube to the negative pressure device. Insert the suction tube into the affected area, so that the suction tube is upright or the suction port 13 is tilted downward. Then turn on the negative pressure device to draw the blood mixture oozing from the affected area to the drainage tube 24 and flow out from the inner port 242 of the drainage tube 24. At this time, the blood mixture will fall into the storage chamber 3 due to its own weight. The blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1, and finally be drawn out of the suction tube from the outer tube 1 through the negative pressure port 14. Bone particles or tissues will accumulate and be stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4. After use, remove the suction tube and the negative pressure tube, then unscrew the first tube 11 and the second tube 12, and then unscrew the inner tube 2 from the suction port 13 to take out the inner tube 2. Then use a cutting tool to cut the inner tube 2 in the middle to recycle the bone particles for reimplantation and fusion.

[0075] Example 2:

[0076] like Figure 3As shown, the suction tube of this embodiment includes an outer tube 1 and an inner tube 2. The outer tube 1 includes a first tube body 11 and a second tube body 12. The first tube body 11 is connected to the suction port 13 as a whole, and the second tube body 12 is connected to the negative pressure port 14 as a whole. The first tube body 11 and the second tube body 12 are connected by a threaded connection 8. An anticoagulant tube interface 15 is opened on the end face of the second tube body 12 facing the negative pressure port 14. The anticoagulant tube interface 15 is used to connect the anticoagulant liquid. The inner tube 2 of this embodiment includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21, the second end face 22, and the tube wall 23 are integrally formed into a cylindrical inner tube. A filter hole 4 is opened on the tube wall 23. The drainage tube 24 passes through the middle of the first end face 21. The outer port 241 of the drainage tube 24 extends out of the first end face 21, and the inner port 242 extends to the middle of the inner tube 2 to form a slag storage chamber 3. In this embodiment, the inner tube 2 is an integral tube body. Its first end face 21 is not provided with holes, and its second end face 22 is provided with a small hole 5 smaller than the diameter of the filter hole 4. The outer port 241 of the drainage tube 24 is also connected to the suction port 13 of the outer tube 1 by a threaded connection 8, so the inner tube 2 can be disassembled relative to the outer tube 1.

[0077] In use, connect the suction port 13 of the outer tube 1 to the suction tube, and connect the negative pressure port 14 of the outer tube to the negative pressure device. Insert the suction tube into the affected area, so that the suction tube is upright or the suction port 13 is tilted downward. Then turn on the negative pressure device to draw the blood mixture oozing from the affected area to the drainage tube 24 and flow out from the inner port 242 of the drainage tube 24. At this time, the blood mixture will fall into the storage chamber 3 due to its own weight. The blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1, and finally be drawn out of the suction tube from the outer tube 1 through the negative pressure port 14. Bone particles or tissues will accumulate and be stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4. After use, remove the suction tube and the negative pressure tube, then unscrew the first tube 11 and the second tube 12, and then unscrew the inner tube 2 from the suction port 13 to take out the inner tube 2. Then use a cutting tool to cut the inner tube 2 in the middle to recycle the bone particles for reimplantation and fusion.

[0078] Example 3:

[0079] like Figures 4-5As shown, the suction tube of this embodiment includes an outer tube 1 and an inner tube 2. The outer tube 1 includes a first tube body 11 and a second tube body 12. The first tube body 11 is connected to the suction port 13 as a whole, and the second tube body 12 is connected to the negative pressure port 14 as a whole. The first tube body 11 and the second tube body 12 are connected by a plug-in connection 9. An anticoagulant tube interface 15 is opened on the end face of the second tube body 12 facing the negative pressure port 14. The anticoagulant tube interface 15 is used to connect the anticoagulant liquid. The inner tube 2 of this embodiment includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21, the second end face 22, and the tube wall 23 are integrally formed into a cylindrical inner tube. A filter hole 4 is opened on the tube wall 23. The drainage tube 24 passes through the middle of the first end face 21. The outer port 241 of the drainage tube 24 extends out of the first end face 21, and the inner port 242 extends to the middle of the inner tube 2 to form a slag storage chamber 3. In this embodiment, the inner tube 2 has a wall 23 including a first perimeter 231 and a second perimeter 232. The first perimeter 231 is integrally connected to the first end face 21, and the second perimeter 232 is integrally connected to the second end face 22. The open ends of the first perimeter 231 and the second perimeter 232 are connected by a threaded connection 8. Neither the first end face 21 nor the second end face 22 has any holes. The outer port 241 of the drainage tube 24 is connected to the suction port 13 of the outer tube 1 by a plug-in connection 9. Therefore, the inner tube 2 can be disassembled relative to the outer tube 1, and the first perimeter 231 and the second perimeter 232 of the inner tube 2 can also be disassembled to facilitate the removal of bone particles or tissue from the slag storage chamber 3. The inner port 242 of the drainage tube 24 extends beyond the open end of the first perimeter 231, from... Figure 4 See, the inner port 242 of the drainage tube 24 extends upward into the second perimeter 232.

[0080] In use, connect the suction port 13 of the outer tube 1 to the suction tube, and connect the negative pressure port 14 of the outer tube to the negative pressure device. Insert the suction tube into the affected area, so that the suction tube is upright or the suction port 13 is tilted downward. Then turn on the negative pressure device to draw the blood mixture oozing from the affected area to the drainage tube 24 and flow out from the inner port 242 of the drainage tube 24. At this time, the blood mixture will fall into the storage chamber 3 due to its own weight. The blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1, and finally be drawn out of the suction tube from the outer tube 1 through the negative pressure port 14. Bone particles or tissues will accumulate and be stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4. After use, remove the suction tube and the negative pressure tube, then pull out the first tube 11 and the second tube 12, and then pull out the inner tube 2 from the suction port 13. Then, rotate and disassemble the first rim 231 and the second rim 232, and place the inner port 242 of the drainage tube 24 downwards into contact with the container holding the recovered bone particles or tissues and gently tap them against each other, so that the bone particles or tissues adhering to the slag chamber 3 can be shaken off and fall into the container for reimplantation fusion.

[0081] Example 4:

[0082] like Figure 6 and Figure 7 As shown, the suction tube of this embodiment includes an outer tube 1 and an inner tube 2. The outer tube 1 includes a first tube body 11 and a second tube body 12. The first tube body 11 is connected to the suction port 13 as a whole, and the second tube body 12 is connected to the negative pressure port 14 as a whole. The first tube body 11 and the second tube body 12 are connected by a threaded connection 8. An anticoagulant tube interface 15 is opened on the end face of the second tube body 12 facing the negative pressure port 14. The anticoagulant tube interface 15 is used to connect the anticoagulant liquid. The inner tube 2 of this embodiment includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21, the second end face 22, and the tube wall 23 are integrally formed into a cylindrical inner tube. A filter hole 4 is opened on the tube wall 23. The drainage tube 24 passes through the middle of the first end face 21. The outer port 241 of the drainage tube 24 extends out of the first end face 21, and the inner port 242 extends to the middle of the inner tube 2 to form a slag storage chamber 3. In this embodiment, the inner tube 2's wall 23 includes a first perimeter 231 and a second perimeter 232. The first perimeter 231 is integrally connected to the first end face 21, and the second perimeter 232 is integrally connected to the second end face 22. The open ends of the first perimeter 231 and the second perimeter 232 are connected by a threaded connection 8. The first end face 21 has no holes, while the second end face 22 has small holes 5 smaller than the diameter of the filter holes 4. Meanwhile, as... Figure 7 As shown, in this embodiment, three connecting plates 7 are provided between the second tube body 12 and the second perimeter 232. These three connecting plates 7 are respectively connected to the outer wall of the second perimeter 232 and the inner wall of the second tube body 12, thereby connecting the second perimeter 232 and the second tube body 12 into one unit. Therefore, when the second tube body 12 is unscrewed, the second perimeter 232 is also unscrewed at the same time, that is, the outer tube 1 and the inner tube 2 are opened simultaneously in one operation, thus saving operation steps and time and improving work efficiency. In this embodiment, the outer port 241 of the drainage tube 24 is also connected to the suction port 13 of the outer tube 1 by a threaded connection 8. In order to avoid unscrewing the drainage tube 24 when unscrewing the second perimeter 232 of the inner tube 2, the threaded connection 8 between the drainage tube 24 and the suction port 13 is made into a reverse threaded connection 8. Therefore, it is possible to disassemble the second perimeter 232 at the same time as disassembling the second tube body 12, and the first perimeter 231 can also be disassembled from the first tube body 11, which facilitates the removal of bone particles or tissue in the slag storage chamber 3. In this embodiment, the inner port 242 of the drainage tube 24 extends beyond the opening end of the first perimeter 231, from... Figure 6 See, the inner port 242 of the drainage tube 24 extends upward into the second perimeter 232.

[0083] In use, connect the suction port 13 of the outer tube 1 to the suction tube, and connect the negative pressure port 14 of the outer tube to the negative pressure device. Insert the suction tube into the affected area, so that the suction tube is upright or the suction port 13 is tilted downward. Then turn on the negative pressure device to draw the blood mixture oozing from the affected area to the drainage tube 24 and flow out from the inner port 242 of the drainage tube 24. At this time, the blood mixture will fall into the storage chamber 3 due to its own weight. The blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1, and finally be drawn out of the suction tube from the outer tube 1 through the negative pressure port 14. Bone particles or tissues will accumulate and be stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4. After use, remove the suction tube and the negative pressure tube, then unscrew the second tube 12. At the same time as unscrewing the second tube 12, the second rim 232 will also be unscrewed relative to the first rim 231. Then, unscrew the first rim 231 of the inner tube 2 from the suction port 13 to remove the inner tube 2. Then, with the inner port 242 of the drainage tube 24 facing down, contact the container holding the recovered bone particles or tissue and gently tap them together. This will shake the bone particles or tissue adhering to the slag chamber 3 off and into the container for reimplantation and fusion.

[0084] Example 5:

[0085] like Figures 8-9 As shown, the suction tube of this embodiment includes an outer tube 1 and an inner tube 2. The outer tube 1 includes a first tube body 11 and a second tube body 12. The first tube body 11 is connected to the suction port 13 as a whole, and the second tube body 12 is connected to the negative pressure port 14 as a whole. The first tube body 11 and the second tube body 12 are connected by a plug-in connection 9. An anticoagulant tube interface 15 is opened on the end face of the second tube body 12 facing the negative pressure port 14. The anticoagulant tube interface 15 is used to connect the anticoagulant liquid. The inner tube 2 of this embodiment includes a first end face 21, a second end face 22, a tube wall 23, and a drainage tube 24. The first end face 21, the second end face 22, and the tube wall 23 are integrally formed into a cylindrical inner tube. A filter hole 4 is opened on the tube wall 23. The drainage tube 24 passes through the middle of the first end face 21. The outer port 241 of the drainage tube 24 extends out of the first end face 21, and the inner port 242 extends to the middle of the inner tube 2 to form a slag storage chamber 3. In this embodiment, the inner tube 2's wall 23 includes a first perimeter 231 and a second perimeter 232. The first perimeter 231 is integrally connected to the first end face 21, and the second perimeter 232 is integrally connected to the second end face 22. The open ends of the first perimeter 231 and the second perimeter 232 are connected by a plug-in connection 9. The first end face 21 has no holes, while the second end face 22 has small holes 5 smaller than the diameter of the filter holes 4. A cleaning tool 6 is connected to the middle of the outer end face of the second end face 22. Figure 9As shown, the slag-cleaning tool 6 in this embodiment is shaped like a spoon. In this embodiment, the outer port 241 of the drainage tube 24 and the suction port 13 of the outer tube 1 are connected as a non-removable whole by ultrasonic welding; and in order to facilitate the slag-cleaning tool 6 to extend into the slag storage cavity 3 to clean the residue, the inner port 242 of the drainage tube 24 is not designed to extend beyond the opening end of the first perimeter 231, but is flush with the opening end of the first perimeter 231, so it will not affect the swing direction of the slag-cleaning tool 6.

[0086] In use, connect the suction port 13 of the outer tube 1 to the suction tube, and connect the negative pressure port 14 of the outer tube to the negative pressure device. Insert the suction tube into the affected area, so that the suction tube is upright or the suction port 13 is tilted downward. Then turn on the negative pressure device to draw the blood mixture oozing from the affected area to the drainage tube 24 and flow out from the inner port 242 of the drainage tube 24. At this time, the blood mixture will fall into the storage chamber 3 due to its own weight. The blood will flow from the filter holes 4 around the storage chamber 3 into the outer tube 1, and finally be drawn out of the suction tube from the outer tube 1 through the negative pressure port 14. Bone particles or tissues will accumulate and be stored in the storage chamber 3 due to their own weight and the obstruction of the filter holes 4. After use, remove the suction tube and the negative pressure tube, then pull apart the first tube 11 and the second tube 12, and then pull apart the second perimeter 232 relative to the first perimeter 231 to expose the slag storage chamber 3. At this time, it is not necessary to separate the inner tube 2 part of the first perimeter 231 from the first tube 11. Just hold the first tube 11 with one hand and insert the slag cleaning tool 6 of the second perimeter 232 into the slag storage chamber 3 with the other hand. The bone particles or tissues adhering to the slag storage chamber 3 can be cleaned out using the slag cleaning tool 6. The bone particles can be used for reimplantation fusion.

[0087] In the above embodiments of orthopedic surgical suction tubes, since the filter holes 4 are located on the wall 23 of the inner tube 2, and the filtration direction is parallel to the suction direction, the filter holes 4 are not easily blocked by bone particles and tissues, effectively improving surgical efficiency and results. Moreover, since the suction force is buffered and redirected, the blood mixture flowing out from the inner port 242 of the drainage tube 24 can enter the residue chamber 3 by its own weight. The blood will flow from the filter holes 4 around the residue chamber 3 into the outer tube 1 and eventually be extracted from the suction tube. The bone particles or tissues accumulate and are stored in the residue chamber 3 due to their own weight and the obstruction of the filter holes 4, for subsequent bone particle recovery and reimplantation fusion. The extracted blood can also be recovered as autologous blood. Therefore, it can effectively improve the surgical efficacy, reduce the risk of infection, and lower the surgical cost.

[0088] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A surgical suction tube for convenient bone fragment recovery in orthopedic surgery, comprising an outer tube and an inner tube, wherein the inner tube is coaxially connected to the outer tube, characterized in that, The inner tube includes: The first end face faces the suction port of the outer tube; The second end face is disposed opposite to the first end face; The pipe wall surrounds a first end face and a second end face, and the pipe wall is provided with filter holes. Neither the first end face nor the second end face has any holes. The pipe wall includes a first circumference and a second circumference. The first circumference is integrally connected to the first end face, and the second circumference is integrally connected to the second end face. The open end of the first circumference and the open end of the second circumference are connected in a way that facilitates disassembly and assembly. A drainage tube passes through the middle of the first end face, with its outer port extending beyond the first end face and connecting to the suction port; the inner port of the drainage tube extends to the middle of the inner tube, and the drainage tube extending into the inner tube, the first end face, and the first surrounding edge together form a slag storage cavity. A slag removal tool is connected to the middle position of the outer end face of the second end face.

2. The orthopedic surgical suction tube for convenient bone particle recovery according to claim 1, characterized in that, The outer tube includes a first tube body and a second tube body. The first tube body is connected to the suction port as a whole, and the second tube body is connected to the negative pressure port as a whole. The first tube body and the second tube body are connected in a way that facilitates disassembly and assembly.

3. The orthopedic surgical suction tube for convenient bone particle recovery according to claim 2, characterized in that, The inner port of the drainage tube extends beyond the opening end of the first surrounding edge.

4. The orthopedic surgical suction tube for convenient bone particle recovery according to claim 2, characterized in that, The connection between the open end of the first perimeter and the open end of the second perimeter is a threaded connection.

5. The orthopedic surgical suction tube for convenient bone particle recovery according to claim 2, characterized in that, The second perimeter is fixedly connected to the second tube body. When the second tube body is detached from the first tube body, the second perimeter is also detached from the first perimeter.

6. The orthopedic surgical suction tube for convenient bone particle recovery according to claim 1, characterized in that, The outer port of the drainage tube is fixedly connected to the suction port of the outer tube so that the inner tube and the outer tube are coaxially connected.

7. The orthopedic surgical suction tube for convenient bone particle recovery according to claim 1, characterized in that, The outer tube has an anti-condensation pipe interface on the end face facing the negative pressure port.

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