Laparoscopic tumor fragment protection bowden cable

Abstract

This invention discloses a protective arch sleeve for laparoscopic tumor fragmentation, comprising a tumor fragmentation tube and a push-pull tube that is sleeved outside the tumor fragmentation tube and can slide along the axial direction of the tumor fragmentation tube. A sealing mechanism is provided between the outer wall of the tumor fragmentation tube and the luminal wall of the push-pull tube to achieve a sliding seal between the tumor fragmentation tube and the push-pull tube. A tumor fragmentation groove is formed on the distal end of the tumor fragmentation tube, and an annular segment is formed at the distal end of the groove. The push-pull tube has a push-pull tube body and an elastic support, with at least two elastic supports arranged along the circumferential direction of the push-pull tube body. A protective arch sleeve is sleeved between the distal end of the push-pull tube body and the distal end of the elastic support. The protective arch sleeve can be expanded by the deformation of the elastic support, covering the tumor fragmentation groove. The proximal end of the protective arch sleeve is connected and fixed to the distal end of the push-pull tube body, and the distal end is connected and fixed to the elastic support or the annular segment. The protective arch sleeve has an opening. Compared with the prior art, tumor fragmentation is easier and extravasation is avoided, improving the effectiveness and safety of the surgery.

Description

Technical Field

[0001] This invention relates to a medical device, and more particularly to a protective sleeve for laparoscopic tumor fragmentation. Background Technology

[0002] Laparoscopy plays a crucial role in the diagnosis and treatment of abdominal diseases. In laparoscopic surgery, during the removal of fragmented fibroids after myomectomy, a large-toothed forceps is used to clamp the fibroid through the distal end of the rotating blade of the fibroid fragmentation device. The forceps are then pulled towards the rotating blade and cut into strips before removal. However, this method requires the forceps to clamp the fibroid throughout the entire cutting process and pull it proximally towards the rotating blade to ensure it is pulled into the device. During clamping, the limited biting area of ​​the forceps makes them prone to slipping, causing the fibroid to scatter as the blade rotates, posing risks of difficulty in fragmentation and extravasation. Therefore, during laparoscopic surgery, an isolation sheet or specimen bag is placed inside the abdominal cavity at the tumor site to avoid this problem. However, since the isolation sheet or specimen bag is still an open space, it is still impossible to completely prevent the tumor from spilling out and implanting when the laparoscopic tumor fragmentation device is used to cut the tumor. At the same time, the large toothed forceps cannot be larger than the diameter of the rotating blade of the tumor fragmentation device during operation. Otherwise, the large toothed forceps may collide with the rotating blade during the process of pulling into the rotating blade of the tumor fragmentation device, damaging the blade of the rotating blade of the tumor fragmentation device. It may even cause the rotating blade to expand outward into a trumpet shape and become unusable. Summary of the Invention

[0003] The purpose of this invention is to provide a protective sheath for laparoscopic tumor fragmentation. The technical problem to be solved is to make tumor fragmentation easier, avoid extravasation and implantation of tumor tissue, and improve the effectiveness and safety of the surgery.

[0004] To solve the above problems, the present invention adopts the following technical solution: a laparoscopic tumor fragmentation protective sleeve, comprising a tumor fragmentation tube, a push-pull tube sleeved outside the tumor fragmentation tube and slidable along the axial direction of the tumor fragmentation tube, wherein a sealing mechanism is provided between the outer wall of the tumor fragmentation tube and the luminal wall of the push-pull tube to achieve a sliding seal between the tumor fragmentation tube and the push-pull tube; wherein:

[0005] The distal end of the fragmentation tube is provided with a fragmentation groove, the arc length of the arc-shaped bottom of the fragmentation groove is at least one-quarter of the circumference of the fragmentation tube, and the distal end of the fragmentation groove is provided with an annulus.

[0006] The push-pull tube is provided with a push-pull tube body and an elastic support in sequence from the near end to the far end. The elastic support can bend and deform along its length after being subjected to external force and return to its original shape after the external force is removed. There are at least two elastic supports, which are symmetrically arranged at the far end of the push-pull tube body. The elastic supports are arranged along the circumference of the push-pull tube body, and the far end of the elastic support is fixedly connected to the annular segment.

[0007] A protective sleeve is fitted between the distal end of the push-pull tube body and the distal end of the elastic support. The protective sleeve can be expanded by the deformation of the elastic support. The protective sleeve covers the fragmentation groove. The proximal end of the protective sleeve is connected and fixed to the distal end of the push-pull tube body, and the distal end is connected and fixed to the elastic support or the annular segment. The protective sleeve has an opening.

[0008] In all the elastic supports, at least two symmetrically arranged elastic supports correspond to the two edges of the opening and are fixed to each other;

[0009] When the push-pull tube body is pushed to the far end, the elastic support is bent and deformed by external force, and the opening is opened.

[0010] When the push-pull tube body is pushed toward the proximal end, the elastic support returns to its original state and the opening closes.

[0011] Furthermore, the annular cavity of the annular segment is provided with a stepped portion protruding around the perimeter.

[0012] Furthermore, a first annular protrusion is provided at the proximal end of the tumor fragmentation tube and near the proximal end of the tumor fragmentation tube.

[0013] Furthermore, a second annular protrusion is provided on the proximal end of the fragmentation tube, and a removable sealing cap is provided on the second annular protrusion.

[0014] Furthermore, the distal end of the elastic support is provided with an annular fixed end, which connects to the distal ends of all elastic supports. The inner diameter of the fixed end is equal to the outer diameter of the annular segment and is fixedly connected to the annular segment.

[0015] Furthermore, four elastic supports are provided, and all four elastic supports are located within a semi-circular area in the circumferential direction of the push-pull tube body.

[0016] Furthermore, among the four elastic supports, the included angle between two symmetrically arranged elastic supports is 20°, and the included angle between the other two symmetrically arranged elastic supports is 120°.

[0017] Furthermore, the distal end of the annular segment is a closed surface or is covered and closed by a protective bow sleeve.

[0018] Furthermore, the sealing mechanism is a rubber ring, which is fixed to the proximal end of the cavity of the push-pull tube body.

[0019] Furthermore, the length of the push-pull tube body is less than the length of the remaining portion of the fragmentation tube after removing the distal fragmentation groove and the annular section.

[0020] Compared with existing technologies, this invention features a tumor fragmentation tube with a fragmentation groove at its distal end. A slidable push-pull tube is fitted over the fragmentation tube, and an elastic support is positioned at the distal end of the push-pull tube body, with a protective arch sleeve covering the elastic support. When the push-pull tube is pushed distally, the elastic support bends and deforms under force, opening the protective arch sleeve. After the tumor is clamped and placed into the protective arch sleeve, the push-pull tube is retracted, restoring the elastic support to its original shape and closing the opening of the protective arch sleeve. A laparoscopic tumor fragmentation device is inserted into the fragmentation tube, and the tumor is rotaryly cut and removed within the protective arch sleeve. This allows the fragmentation process to take place within a relatively enclosed space formed by the protective arch sleeve. Because it eliminates the need to pull the tumor into the rotating blade of the fragmentation device using large forceps, damage to the rotating blade is prevented, fragmentation becomes easier, and extravasation of the tumor is avoided, improving the effectiveness and safety of the surgery. Attached Figure Description

[0021] Figure 1-1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 1-2 This is a cross-sectional view of the present invention.

[0023] Figure 2 This is a schematic diagram of the protective bow sleeve after it has been opened according to the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the tumor fragmentation tube of the present invention.

[0025] Figure 4 This is a schematic diagram of the push-pull tube structure of the present invention.

[0026] Figure 5 This is a diagram showing the positional relationship between the push-pull tube body and the elastic support of the present invention.

[0027] Figure 6 This is a schematic diagram of the use of the present invention.

[0028] Figure 7 This is a schematic diagram of the use of the present invention. Figure 2 . Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] In this invention, the proximal end is the end closer to the surgeon, and the distal end is the end farther away from the surgeon.

[0031] like Figure 1-1 , Figure 1-2 , Figure 2 , Figure 3 and Figure 4As shown, this invention discloses a protective sleeve for laparoscopic tumor fragmentation, including a tumor fragmentation tube 1 and a push-pull tube 2 that is sleeved outside the tumor fragmentation tube 1 and can slide along the axial direction of the tumor fragmentation tube 1. A sealing mechanism is provided between the outer wall of the tumor fragmentation tube 1 and the luminal wall of the push-pull tube 2 to achieve a sliding seal between the tumor fragmentation tube 1 and the push-pull tube 2; wherein:

[0032] The tumor fragmentation tube 1 is a straight tube with an outer diameter of 16.8±0.1mm and a wall thickness of 0.6mm to ensure that a conventional laparoscopic tumor fragmentation device can pass through its lumen. A tumor fragmentation groove 11 is provided on the distal end of the tube body of the tumor fragmentation tube 1. The arc length of the arc-shaped bottom of the tumor fragmentation groove 11 is at least one-quarter of the circumference of the tumor fragmentation tube 1. An annular segment 12 is provided at the distal end of the tumor fragmentation groove 11. Preferably, the arc length of the arc-shaped bottom of the tumor fragmentation groove 11 is one-quarter of the circumference of the tumor fragmentation tube 1.

[0033] The push-pull tube 2 is a straight tube with an inner diameter larger than the outer diameter of the fragmentation tube 1, specifically 18±0.1mm, and a wall thickness of 0.6mm. This allows the push-pull tube 2 to be fitted onto the fragmentation tube 1 and to slide along the axial direction of the fragmentation tube 1. The push-pull tube 2 is provided with a push-pull tube body 21 and an elastic support 22 from the proximal end to the distal end. The elastic support 22 is formed by cutting the tube body at the distal end of the push-pull tube 2 into a straight strip structure. It can bend and deform along its length after being subjected to external force and return to its original shape after the external force is removed.

[0034] Four elastic supports 22 are provided, which are symmetrically arranged in pairs at the far end of the push-pull tube body 21 and arranged along the circumferential direction of the push-pull tube body 21. The far end of the elastic support 22 is provided with an annular fixed end 23. The inner diameter of the fixed end 23 is equal to the outer diameter of the annular segment 12, and it is fitted on the annular segment 12 and fixedly connected to the annular segment 12.

[0035] A protective bow sleeve 3 is provided between the distal end of the push-pull tube body 21 and the distal end of the elastic support 22. The protective bow sleeve 3 can be expanded by the deformation of the elastic support 22. The protective bow sleeve 3 covers the tumor crushing groove 11. The proximal end of the protective bow sleeve 3 is connected and fixed to the distal end of the push-pull tube body 21 by adhesive bonding. The distal end is connected and fixed to the annular segment 12 by adhesive bonding. The protective bow sleeve 3 is provided with an opening 31 for placing the tumor into the protective bow sleeve 3.

[0036] Among all the elastic supports 22, the elastic supports 22 located at the upper end of the cross-section of the push-pull tube body 21 and symmetrically arranged correspond to the two edges of the opening 31 and are fixed to each other; the remaining elastic supports 22 are connected and fixed to the sleeve wall of the protective bow sleeve 3, and the connection can be fixed by adhesive.

[0037] The distal end of the annular segment 12 is either closed or covered by a protective sleeve 3 to prevent blood from flowing out of the distal end of the tumor fragmentation tube 1 and into the abdominal cavity. Preferably, the distal end of the annular segment 12 is closed by the protective sleeve 3.

[0038] The working principle of this invention is as follows: When the push-pull tube body 21 is pushed on the tumor fragmentation tube 1 toward the distal end of the tumor fragmentation tube 1, the elastic support 22 is bent and deformed by external force. Since the elastic support 22 is arranged along the circumferential direction of the push-pull tube body 21, it bends along the radial direction of the push-pull tube body 21 during bending deformation. At this time, the opening 31 is opened, and the tumor can be put into the protective arch sleeve 3.

[0039] When the push-pull tube body 21 is pushed toward the proximal end of the tumor fragmentation tube 1, the elastic stent 22 gradually returns to its original shape, and the opening 31 gradually closes.

[0040] The laparoscopic tumor fragmentation device is then inserted into the proximal end of the fragmentation tube 1 and pushed to the position of the protective sleeve 3. The tumor in the protective sleeve 3 can then be rotated and fragmented. Since the fragmentation is carried out in a relatively closed space formed by the protective sleeve 3, and the fragmentation process does not require clamping the tumor with large forceps and pulling it into the rotating blade of the fragmentation device, it not only avoids the collision and damage between the rotating blade of the fragmentation device and the large forceps, but also makes fragmentation easier, avoids extravasation and implantation of the tumor, and improves the effectiveness and safety of the operation.

[0041] In this invention, the total length of the tumor fragmentation tube 1 is 36.5-37cm, which is longer than the length of the tubular cutting part in the laparoscopic tumor fragmentation device (36cm). Therefore, even if the tubular cutting part of the laparoscopic tumor fragmentation device is completely pushed into the tumor fragmentation tube 1, it will not protrude beyond the distal end of the tumor fragmentation tube 1.

[0042] like Figure 3 As shown, the annular segment 12 has a stepped portion 121 protruding around its annular cavity to limit the cutting head of the laparoscopic tumor fragmentation device. The length of the annular segment 12 is between 0.5 and 1 cm.

[0043] The length of the tumor fragmentation groove 11 is between 12-16cm to accommodate tumors of different sizes while ensuring sufficient space. The tumor fragmentation groove 11 is used to fix the tumor relatively within it, while preventing the blade of the laparoscopic tumor fragmentation device from tearing the protective arch sleeve 3.

[0044] like Figure 1-1 , Figure 1-2 and Figure 3As shown, a first annular protrusion 13 is provided at the proximal end of the tumor fragmentation tube 1 and near the proximal end of the tumor fragmentation tube 1, so as to facilitate hand holding and limit the retraction of the push-pull tube body 21. During the operation, the proximal end of the tumor fragmentation tube 1 is exposed outside the abdominal incision. The first annular protrusion 13 can also be used to limit the depth of the tumor fragmentation tube 1 and prevent it from passing through the abdominal incision. A second annular protrusion 14 is provided at the proximal end of the tumor fragmentation tube 1. A detachable sealing cap 15 is provided on the second annular protrusion 14 to seal the tumor fragmentation tube 1 and prevent air from entering the abdominal cavity. When it is necessary to insert a laparoscopic tumor fragmentation device into the tumor fragmentation tube 1, the sealing cap 15 can be removed for use. Alternatively, a punctureable part can be provided on the sealing cap 15 for use by puncture. The sealing cap 15 is made of medical silicone or rubber material.

[0045] like Figure 5 As shown, the four elastic supports 22 are all located within a semi-circular area on the circumference of the push-pull tube body 21, specifically the upper semi-circle of the push-pull tube body 21. The angle between two symmetrically arranged elastic supports 22 is 20°, and the angle between the other two symmetrically arranged elastic supports 22 is 120°. The arc-shaped bottom of the fragmentation groove 11 of the fragmentation tube 1 is located in the lower semi-circle of the fragmentation tube 1.

[0046] In this invention, the length of the push-pull tube body 21 is less than the length of the remaining portion of the fragmentation tube 1 after removing the distal fragmentation groove 11 and the annular segment 12. Specifically, the length of the push-pull tube body 21 is 10-12cm, the length of the elastic support 22 is 18-22cm, the width is 1.5mm, and the thickness is 0.6mm. The length of the fixed end 23 is 0.5-1cm.

[0047] In this invention, both the tumor fragmentation tube 1 and the push-pull tube 2 are made of disposable medical-grade polypropylene or medical-grade polyethylene material.

[0048] like Figure 4 As shown, a third annular protrusion 24 is provided on the outer wall of the tube body 21 near the end of the push-pull tube body 21 to facilitate push-pull operation.

[0049] like Figure 1-1 and Figure 1-2 As shown, in this invention, the sealing mechanism is a rubber ring 4, which is fixed to the proximal end of the cavity of the push-pull tube body 21 to achieve a sliding seal. The use of the rubber ring 4 enables good sliding performance while maintaining a seal.

[0050] The method of using this invention is as follows:

[0051] like Figure 6 and Figure 7As shown, after the trocar 201 is inserted into the abdominal cavity through the abdominal incision 200, the present invention is inserted into the abdominal cavity from the trocar. The push-pull tube body 21 is pushed outside the abdominal cavity, causing the elastic support 22 to bend into an arc shape along its length. The elastic support 22 drives the protective arch sleeve 3 to open, increasing the volume of the protective arch sleeve 3. Simultaneously, the elastic support 22 also opens the opening 31 on the protective arch sleeve 3. At this time, the tumor 203 is inserted through the opening 31 using laparoscopic forceps. Then, the push-pull tube body 21 is pulled back, causing the elastic support to spring back and return to its original shape. The opening 31 of the protective arch sleeve closes, and the overall size decreases, thus compressing and fixing the tumor. The rotating blade 202 of the laparoscopic tumor fragmentation device is inserted into the fragmentation tube 1. The device is continuously pushed towards the distal end of the tube 1, and the electrically operated tumor fragment 2 is continuously fragmented towards the distal end of the fragmentation groove 11. After reaching the step 121, the rotating blade 202 is retracted, and the tumor is promptly moved using laparoscopic forceps. This process is repeated to fragment the tumor, which becomes smaller and forms a strip. The fragment is then expelled from the proximal end of the rotating blade tube, powered by the thrust of the fragmentation device. This cycle is repeated, and as the tumor shrinks, the push-pull tube is tightened, the elastic support is straightened, and the tumor is fixed until it is completely removed.

[0052] This invention has:

[0053] The size of the protective sheath inside the abdominal cavity can be controlled by pushing and pulling the tubes outside the body, which facilitates the placement, fixation and protection of the tumor.

[0054] The protective sheath wraps around the tumor fragmentation groove, forming a closed space except for the upward opening, separating it from the abdominal cavity tissues, preventing the tumor or tissue fragments from spilling out and implanting, achieving tumor-free technology, and protecting the abdominal cavity and puncture site.

[0055] The rotating blade of the laparoscopic tumor fragmentation device is positioned within the fragmentation groove to fragment the tumor. By pushing the electrically rotating blade, the edge of the tumor is cut into strips, reaching the distal end of the fragmentation groove. The fragmentation process does not require clamping the tumor and pulling it into the lumen of the rotating blade of the tumor fragmentation device, which protects the rotating blade of the laparoscopic tumor fragmentation device and prevents the blade from damaging surrounding tissues. This makes the fragmentation process easier, avoids extravasation and seeding of the tumor, and improves the effectiveness and safety of the surgery.

[0056] This invention can be used not only for laparoscopic uterine fibroid removal, but also for laparoscopic tumor resection surgery.

Claims

1. A protective sheath for laparoscopic tumor fragmentation, characterized in that: Includes a tumor-crushing tube (1) and a push-pull tube (2) sleeved outside the tumor-crushing tube (1) and slidable along the axial direction of the tumor-crushing tube (1). A sealing mechanism is provided between the outer wall of the tumor-crushing tube (1) and the lumen wall of the push-pull tube (2) to achieve a sliding seal between the tumor-crushing tube (1) and the push-pull tube (2); wherein: A lump-breaking groove (11) is provided on the distal end of the lump-breaking tube (1). The arc length of the arc-shaped bottom of the lump-breaking groove (11) is at least one-quarter of the circumference of the lump-breaking tube (1). An annular segment (12) is provided at the distal end of the lump-breaking groove (11). The push-pull tube (2) is provided with a push-pull tube body (21) and an elastic bracket (22) from the near end to the far end. The elastic bracket (22) can bend and deform along its length direction after being subjected to external force and return to its original shape after the external force is lost. There are at least two elastic brackets (22), which are symmetrically arranged at the far end of the push-pull tube body (21). The elastic brackets (22) are arranged along the circumferential direction of the push-pull tube body (21). The far end of the elastic bracket (22) is fixedly connected to the annular segment (12). A protective sleeve (3) is provided between the distal end of the push-pull tube body (21) and the distal end of the elastic support (22). The protective sleeve (3) can be expanded by the deformation of the elastic support (22). The protective sleeve (3) covers the fragmentation groove (11). The proximal end of the protective sleeve (3) is connected and fixed to the distal end of the push-pull tube body (21), and the distal end is connected and fixed to the elastic support (22) or the annular segment (12). An opening (31) is provided on the protective sleeve (3). In all the elastic supports (22), at least two symmetrically arranged elastic supports (22) correspond to the two edges of the opening (31) and are fixed to each other; When the push-pull tube body (21) is pushed toward the far end, the elastic support (22) is bent and deformed by external force, and the opening (31) is opened. When the push-pull tube body (21) is pushed toward the proximal end, the elastic support (22) returns to its original state and the opening (31) closes.

2. The laparoscopic tumor fragmentation protective sheath according to claim 1, characterized in that: The annular cavity of the annular segment (12) is provided with a stepped portion (121) protruding around the perimeter.

3. The laparoscopic tumor fragmentation protective sheath according to claim 2, characterized in that: A first annular protrusion (13) is provided at the proximal end of the tumor fragmentation tube (1) and near the proximal end of the tumor fragmentation tube (1).

4. The laparoscopic tumor fragmentation protective sheath according to claim 3, characterized in that: The proximal end of the tumor fragmentation tube (1) is provided with a second annular protrusion (14), and a removable sealing cap (15) is provided on the second annular protrusion (14).

5. The laparoscopic tumor fragmentation protective sheath according to any one of claims 1-4, characterized in that: The distal end of the elastic support (22) is provided with an annular fixed end (23), which connects the distal ends of all elastic supports (22). The inner diameter of the fixed end (23) is equal to the outer diameter of the annular segment (12) and is fixedly connected to the annular segment (12).

6. The laparoscopic tumor fragmentation protective sheath according to claim 5, characterized in that: The elastic support (22) is provided in four parts, and the four elastic supports (22) are all located in a semi-circular area in the circumferential direction of the push-pull tube body (21).

7. The laparoscopic tumor fragmentation protective sheath according to claim 6, characterized in that: Of the four elastic supports (22), the angle between two symmetrically arranged elastic supports (22) is 20°, and the angle between the other two symmetrically arranged elastic supports (22) is 120°.

8. The laparoscopic tumor fragmentation protective sheath according to claim 1, characterized in that: The distal end of the annular segment (12) is either a closed surface or covered and closed by a protective bow sleeve (3).

9. The laparoscopic tumor fragmentation protective sheath according to claim 1, characterized in that: The sealing mechanism is a rubber ring (4), which is fixed to the near end of the cavity of the push-pull tube body (21).

10. The laparoscopic tumor fragmentation protective sheath according to claim 1, characterized in that: The length of the push-pull tube body (21) is less than the length of the remaining part of the fragmentation tube (1) after removing the distal fragmentation groove (11) and the annular segment (12).

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