A Yankee tube with a filter bag

Abstract

This utility model discloses a Yankee tube with a filter bag, including a suction tube and a handle. The handle contains a tubular filter bag with an opening and a mesh around its perimeter. The opening of the filter bag is aligned with the outlet end of the suction tube. The suction tube and the handle are internally connected hollow structures. The handle has a back cover with a suction connector that is connected to the interior of the handle. An inner core tube is fitted over the filter bag, and a fixing ring with a through hole is located at the front end of the inner core tube. The opening of the filter bag is clamped and fixed by the inner core tube and the fixing ring and exposed at the through hole. This utility model cleverly incorporates a tubular filter bag with an open end. The drainage medium must pass through this filter bag before it can be drained. The filter bag is large in volume and has numerous mesh holes around its perimeter, which can prevent tube blockage during retention, does not affect the drainage speed, and can retain a large amount of human tissue such as bone fragments and tissue debris, thus avoiding or reducing the frequency of changing drainage devices during surgery.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically to a Yankee tube with a filter bag. Background Technology

[0002] The Yankee tube is a commonly used auxiliary device in medicine, mainly used to drain surgical waste fluid generated during surgery in a timely manner to ensure a clear surgical field and keep the surgical site in the best clean state during the operation.

[0003] Conventional surgical waste fluid aspiration devices connect to Yankee tubes or suction tubes via negative pressure equipment, which is not particularly convenient for the operator to use during surgery. Most importantly, the generated surgical waste fluid may contain bone fragments, tissue debris, and other human tissues. These non-liquid components can potentially clog the equipment, requiring immediate replacement. Alternatively, some bone fragments and tissue debris may need to be removed using other instruments to reduce the chance of clogging, potentially increasing the risk of intraoperative complications. In some cases, it may even be necessary to enlarge the wound area to facilitate the removal of bone fragments and other human tissues by using other instruments.

[0004] To address this issue, some have proposed using dual-tube drainage to reduce the likelihood of blockage compared to single-tube drainage. Others have suggested modifying the suction hole structure at the tube's tip to reduce the entry of bone fragments and other tissues, thus minimizing blockage. However, these designs are not applicable in minimally invasive surgeries with small incisions, especially single-port laparoscopic surgery. Some have also proposed adding a mesh or strip to the tube connecting to the negative pressure device at the end of the tube. However, given the already narrow tube, the mesh or strip can only prevent bone fragments and other tissues from entering the next stage, and it will quickly become clogged, still requiring frequent equipment replacements. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a Yankee tube with a filter screen, which can filter out more bone fragments, tissue debris, and other human tissues during drainage, avoiding the need to replace drainage equipment in a short period of time and facilitating intraoperative operation.

[0006] According to one aspect of the present invention, a Yankee tube with a filter bag is provided, comprising a suction tube and a handle. The suction tube is detachably connected to the front end of the handle. The handle is provided with a filter bag, which is a pocket-shaped structure with an opening and mesh holes all around. The opening of the filter bag is aligned with the outlet end of the suction tube. The rear end of the handle is provided with a back cover. The suction tube and the handle are hollow structures with internal communication. The back cover is provided with a suction connector for connecting to a negative pressure drainage device. The suction connector is in communication with the interior of the handle. Therefore, the suction connector is connected to a negative pressure drainage device. The operator holds the handle, and the suction tube is placed to the area requiring drainage. The drainage medium is drawn in through the suction tube and enters the filter bag through the opening. The filter bag filters the drainage medium and traps bone fragments and tissue debris. The untrapped portion enters the handle and flows out through the suction connector on the back cover. The filter bag, with an opening and a mesh structure all around, ensures that all drainage medium enters the filter bag through the opening for filtration. Unlike mesh plates or sheets, the filter bag can trap more bone fragments, tissue debris, and other human tissues, allowing for longer-term drainage during the procedure. Furthermore, it does not cause blockage after trapping and drainage can continue. The numerous mesh holes all around the filter bag allow for faster filtration of the drainage medium without affecting the drainage speed.

[0007] In some embodiments, an inner core tube is fitted over the filter bag, and a retaining ring with a through hole is provided at the front end of the inner core tube. The opening of the filter bag is clamped and fixed by the inner core tube and the retaining ring, and exposed at the through hole. Thus, the edge of the opening of the filter bag can be folded up to the front end of the inner core tube, the body of the filter bag is located inside the inner core tube, and the edge of the opening of the filter bag can be folded up to the outside of the front end of the inner core tube. The retaining ring is fitted onto the front end of the inner core tube, keeping the opening of the filter bag open and fixed. The retaining ring has a through hole that does not obstruct the opening of the filter bag.

[0008] In some embodiments, the filter bag is a tubular pouch structure, with multiple channel slots on the wall of the inner core tube. Thus, the tubular pouch structure fits the inner core tube, maximizing the volume of the filter bag to increase the space for trapping bone fragments, tissue debris, and other human tissues. After trapping human tissues, the filter bag only expands within the inner core tube without causing blockage. The filtered medium exits through the channel slots.

[0009] In some embodiments, a support portion is provided at the rear end of the inner core tube. The support portion has a channel hole and an end face. One side of the end face of the support portion abuts against the rear end of the handle, and the other side abuts against the inner wall of the rear cover. Thus, the rear end of the inner core tube is positioned by the support portion. After the medium filtered from the filter bag is discharged from the channel hole, it flows out through the channel hole to the rear cover and is led out from the suction connector.

[0010] In some embodiments, the rear end of the inner core tube has an arc-shaped bottom, which is housed within the support portion. This arc-shaped bottom supports the inner core tube, increasing its strength, and also reduces the risk of trapped human tissue from an accidental breakage of the filter bag entering and clogging the rear cover.

[0011] In some embodiments, the front end of the handle is provided with a tube opening connection, and the opening of the filter bag, which is held by the inner core tube and the fixing ring, is fitted onto the tube opening connection. Thus, the tube opening connection expands the inside of the filter bag opening, keeping the opening of the filter bag maximally open. The tube opening connection positions the front end of the inner core tube, and the support portion positions the rear end of the inner core tube, making the installation position of the inner core tube stable.

[0012] In some implementations, the suction tube is elbow-shaped or straight-shaped, and the end face and / or wall of the suction tube are provided with suction holes. Thus, the surgeon can select the appropriate type of suction tube according to the needs of the surgery.

[0013] In some implementations, the suction tube is directly connected to the front end of the handle, or the suction tube is connected to the front end of the handle via an adapter. Thus, some large-diameter suction tubes can be directly fitted onto the front end of the handle, while some suction tubes can have an adapter attached to their rear end to fit the adapter to the front end of the handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The connection design between the various components of this utility model is ingenious. It cleverly incorporates a filter pocket with an open end and a tubular, pocket-shaped structure. The drainage medium must pass through this filter pocket before it can be drained. This filter pocket is large in volume and has several mesh holes around its surface, which can prevent tube blockage during interception, does not affect the drainage speed, and can intercept a large amount of human tissue such as bone fragments and tissue debris. This avoids the need to change the drainage device in a short period of time or can reduce the number of times the drainage device can be changed during surgery. The filter pocket keeps the opening open through the inner core tube and the fixing ring and prevents the filter pocket from sticking tightly to the inner wall of the handle after being stretched open, ensuring a smooth drainage channel. The filter pocket is stably positioned back and forth inside the handle through the inner core tube and the fixing ring, which does not affect the surgeon's normal operation. This Yankee tube with a filter pocket is not only suitable for open surgery, but also for single-port laparoscopic surgery, arthroscopic surgery, thoracoscopic surgery, etc. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external appearance of one embodiment of the Yankee tube with a filter bag according to the present invention;

[0016] Figure 2 This is a schematic diagram of one embodiment of a Yankee tube with a filter screen according to the present invention;

[0017] Figure 3 This is an exploded view of one embodiment of a Yankee tube with a filter bag according to the present invention;

[0018] Figure 4 It is a 3D diagram of the handle;

[0019] Figure 5 This is a schematic diagram of the internal structure of the handle;

[0020] Figure 6 This is a schematic diagram showing the assembled filter bag, inner core tube, and retaining ring.

[0021] Figure 7 This is a schematic diagram of the internal structure of the filter bag, inner core tube, and fixing ring after assembly;

[0022] Figure 8 This is a schematic diagram of the support section of the inner core tube;

[0023] Figure 9 This is a structural diagram of the back cover;

[0024] Figure 10 This is a schematic diagram of the connection between the straight suction tube and the adapter.

[0025] Figure 11 This is a schematic diagram of the structure of a bend-shaped suction tube;

[0026] Figure 12 This is a schematic diagram of a straight suction tube. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments.

[0028] like Figures 1 to 3 As shown, a Yankee tube with a filter bag according to one embodiment of the present invention includes a suction tube 1 and a handle 2. The suction tube 1 is a hollow tube structure, and the handle 2 is an internally connected hollow structure. The suction tube 1 is detachably connected to the front end of the handle 2. A filter bag 3 is installed inside the handle 2. The filter bag 3 is a pocket-shaped structure with an opening 31 and mesh holes 32 all around. The opening 31 of the filter bag 3 is aligned with the outlet end of the suction tube 1. A rear cover 6 is connected to the rear end of the handle 2 by threads or snaps. The rear cover 6 has a suction connector 61, which is used to connect to the connecting tube of a negative pressure drainage device. The suction connector 61 is internally connected to the handle 2.

[0029] The specific installation of filter bag 3, such as Figure 6 and 7As shown: The filter bag 3 is a tubular, pouch-like structure, specifically a mesh-like, elongated tubular structure with an opening 31 at one end and a closed end at the other (not completely sealed, but with mesh openings 32). An inner core tube 4 is fitted over the filter bag 3. The inner core tube 4 is hollow and has external threads at its front end, connecting to a retaining ring 5. The retaining ring 5 resembles a cap, but its end face 44 has a through hole 51. The opening 31 of the filter bag 3 is held in place by the inner core tube 4 and the retaining ring 5, with the opening 31 exposed at the through hole 51. When installing the filter bag 3, the pouch body is located inside the inner core tube 4. The edge of the opening of the filter bag 3 is folded over to the outside of the front end of the inner core tube 4, and the retaining ring 5 is threaded onto the front end of the inner core tube 4. This ensures that the opening 31 of the filter bag 3 remains open and secure, and the through hole 51 on the fixing ring 5 will not obstruct the opening 31 of the filter bag 3. In this application, the filter bag 3 is capable of filtering tissues larger than 0.5 mm. In practical applications, it can be adjusted to a filter bag 3 with a smaller mesh size if needed.

[0030] like Figure 6 As shown, multiple channel slots 41 are formed in the wall of the inner core tube 4, and the channel slots 41 are elongated holes. In this way, the tubular pocket-shaped filter bag 3 is adapted to the inner core tube 4, maximizing the volume of the filter bag 3 to increase the space for intercepting human tissue such as bone fragments and tissue debris. After the filter bag 3 intercepts human tissue, it only expands the inner core tube 4, but does not cause blockage. The medium filtered from the filter bag 3 is discharged from the channel slots 41.

[0031] like Figure 2 As shown, the rear end of the inner core tube 4 has a support portion 42, and a channel hole 43 is provided on the support portion 42. Figure 8 (As shown). The tail of the support part 42 has an end face 44. One side of the end face 44 of the support part 42 abuts against the rear end of the handle 2, and the other side abuts against the inner wall of the rear cover 6. The support part 42 is fixed by the connection between the rear cover 6 and the handle 2. The rear end of the inner core tube 4 has an arc-shaped bottom 45, which is housed within the support part 42. The arc-shaped bottom 45 can support the inner core tube 4 to increase its strength and can also reduce the risk of human tissue trapped in the filter bag 3 entering and clogging the rear cover 6 after accidental breakage. The inner core tube 4, the support part 42, and the arc-shaped bottom 45 are integrally formed structures.

[0032] like Figure 2 and 5As shown, the front end of the handle 2 has a tube connection part 21 inside, with a gap between the tube connection part 21 and the inner wall of the handle 2. The opening 31 of the filter bag 3, held by the inner core tube 4 and the fixing ring 5, is fitted onto the tube connection part 21. In this way, the tube connection part 21 opens the inner side of the opening 31 of the filter bag 3, keeping the opening 31 of the filter bag 3 maximally open. The tube connection part 21 positions the front end of the inner core tube 4, and the rear end of the inner core tube 4 is positioned by the support part 42, so that the installation position of the inner core tube 4 is stable. After the medium filtered from the filter bag 3 is discharged from the channel slot 41, it flows out through the channel hole 43 to the rear cover 6 and is led out from the suction connector part 61.

[0033] The front end of the handle 2 is a hollow cylindrical structure that communicates with the tube connection part 21. From the front end to the rear end of the handle 2, the outer diameter of the front end of the handle 2 gradually increases, while the inner diameter of the inner wall gradually decreases. Some large-diameter suction tubes 1 can be directly fitted onto the front end of the handle 2. Some small-diameter suction tubes 1 or rigid suction tubes 1 can have an adapter 7 attached to the rear end of the suction tube 1. The adapter 7 is then fitted to the front end of the handle 2, and can be inserted into the inner wall of the front end of the handle 2. Figure 10 As shown, the adapter 7 may be provided with a rotating gripping part 71, and the rear cover 6 may be provided with anti-slip ridges 62 and a rotating force application part 63. Figure 9 (As shown), for easy assembly. Figure 4 As shown, the outer wall of the handle 2 can be provided with anti-slip ridges 22 and strip grooves 23, which are beneficial to the grip and the judgment of the direction of the suction tube 1.

[0034] During assembly, the inner core tube 4, filter screen 3 and fixing ring 5 need to be assembled into a whole, then inserted into the handle 2, then the back cover 6 is screwed on, the suction tube 1 is inserted, and the negative pressure device is connected.

[0035] Depending on the surgical needs, the surgeon can select a suitable type of suction tube. For example, such as... Figures 10 to 12 As shown, the suction tube 1 is bent or straight, and whether there is a suction hole 11 on the end face of the suction tube 1, or whether the end face of the suction tube 1 is spherical, and whether there is a suction hole 11 on the front wall of the suction tube 1.

[0036] In use, the suction connector 61 is connected to a negative pressure drainage device connecting pipe. The operator holds the handle 2 and places the suction tube 1 to the part that needs drainage. After the drainage medium is sucked in through the suction tube 1, it enters the filter bag 3 through the tube connection 21 and the opening 31 of the filter bag 3. The filter bag 3 filters the drainage medium and traps bone fragments and tissue debris. The untrapped part flows out from the mesh 32 of the filter bag 3, flows into the handle 2 through the channel slot 41, then flows into the back cover 6 through the channel hole 43, and finally flows out through the suction connector 61 on the back cover 6.

[0037] After the procedure, medical staff can open the back cover 6, remove the inner core tube 4, filter bag 3 and fixing ring 5 as a whole, and then unscrew the fixing ring 5 to extract the tissue inside the filter bag 3.

[0038] This invention features a cleverly designed tubular, pouch-like filter bag 3 with an opening 31 at one end and mesh openings 32 around its perimeter. The opening 31 is strategically positioned to ensure that all drainage media must pass through this filter bag 3 before being drained. Unlike conventional mesh plates or sheets, this filter bag 3 is large and has numerous mesh openings 32, preventing blockage during drainage and maintaining drainage speed. It can also trap a large amount of bone fragments, tissue debris, and other human tissue, allowing for longer-term drainage during surgery and reducing the frequency of changes to drainage equipment. The filter bag 3 is kept open by an inner core tube 4 and a retaining ring 5, preventing it from sticking tightly to the inner wall of the handle 2 when stretched open, ensuring a smooth drainage channel. The filter bag 3 is stably positioned inside the handle 2 by the inner core tube 4 and the retaining ring 5, without interfering with the surgeon's normal operation. The Yankee tube with a filter bag is not only suitable for open surgery, but also for single-port laparoscopic surgery, arthroscopic surgery, thoracoscopic surgery, etc., and its application prospects are very promising.

[0039] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A Yankee tube with a filter bag, comprising a suction tube (1) and a handle (2), characterized in that, The suction tube (1) is detachably connected to the front end of the handle (2). The handle (2) is provided with a filter bag (3). The filter bag (3) is a tubular bag-shaped structure with an opening (31) and mesh holes (32) all around. The filter bag (3) is covered with an inner core tube (4). The front end of the inner core tube (4) is provided with a fixing ring (5). The fixing ring (5) has a through hole (51). The opening (31) of the filter bag (3) is clamped and fixed by the inner core tube (4) and the fixing ring (5) and exposed at the through hole (51). The opening (31) of the filter bag (3) is aligned with the outlet end of the suction tube (1). The inner core tube (4) has multiple channel slots (41) on its wall. (4) has a support part (42) at its rear end. The support part (42) has a channel hole (43) and an end face (44). The inner core tube (4) has an arc-shaped bottom (45) at its rear end. The arc-shaped bottom (45) is housed in the support part (42). The handle (2) has a rear cover (6) at its rear end. The suction tube (1) and the handle (2) are hollow structures with internal communication. One side of the end face (44) of the support part (42) abuts against the rear end of the handle (2) and the other side abuts against the inner wall of the rear cover (6). The rear cover (6) has a suction connector (61) for connecting the negative pressure drainage device to the connecting tube. The suction connector (61) is internally connected to the handle (2).

2. The Yankee tube with a filter bag according to claim 1, characterized in that, The front end of the handle (2) is provided with a tube connection part (21), and the opening (31) of the filter bag (3) held by the inner core tube (4) and the fixing ring (5) is fitted onto the tube connection part (21).

3. The Yankee tube with a filter bag according to claim 2, characterized in that, The suction tube (1) is bent or straight, and the end face and / or tube wall of the suction tube (1) are provided with suction holes (11).

4. The Yankee tube with a filter bag according to claim 2, characterized in that, The suction tube (1) is directly connected to the front end of the handle (2), or the suction tube (1) is connected to the front end of the handle (2) through a conversion connector (7).

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