Pancreatic fluid drainage tool and methods of use thereof

Abstract

The application discloses a pancreatic juice drainage tool and a use method thereof. The pancreatic juice drainage tool comprises a drainage tube, an outer sleeve and a reinforcing assembly. The drainage tube comprises an enteric tube and an extracorporeal tube. The enteric tube is provided with at least one drainage port. The outer sleeve is provided with a mounting hole and an outlet. The reinforcing assembly comprises a fixing wire and a winding member. The fixing wire is wound on the winding member and the two ends of the fixing wire are extended into the extracorporeal tube and pass through the tube wall of the extracorporeal tube. The extracorporeal tube is kept inserted into the outer sleeve through the winding member. The enteric tube connected with the winding member is kept inserted into the outer sleeve and abuts against the extracorporeal tube through the traction of the fixing wire. The stability of the enteric tube and the extracorporeal tube assembled in the outer sleeve is improved. The pancreatic juice flowing through the enteric tube can be introduced into the extracorporeal tube as much as possible before the enteric tube is installed in place, and the possibility of pancreatic juice leakage is reduced.

Description

Technical Field

[0001] This invention relates to the field of drainage tube technology, and more particularly to pancreatic fluid drainage tools and their usage methods. Background Technology

[0002] Patients with pancreatic tumors usually require external or internal drainage of pancreatic juice using a drainage tube after pancreaticoduodenectomy to reduce the incidence of clinically relevant pancreatic fistulas.

[0003] When using an external drainage tube for pancreatic juice drainage, one end of the tube is inserted into the pancreas from outside, guiding pancreatic juice into a drainage bag connected to the other end of the tube. The external drainage tube is typically not removed for 3-6 months post-surgery, severely disrupting the patient's daily life, affecting post-operative supportive care, and causing significant pancreatic juice loss, leading to impaired digestion and absorption and hindering recovery. Furthermore, after removal of the external drainage tube, the lack of support at the pancreaticojejunostomy site increases the likelihood of anastomotic stenosis, leading to recurrent pancreatitis and potentially requiring pancreaticojejunostomy, further prolonging recovery.

[0004] When using an internal drainage tube for pancreatic juice drainage, medical staff push the internal drainage tube into the pancreas through an external tube. After the internal drainage tube is in place, the external tube is removed, allowing the pancreatic juice to be guided into the intestines via the internal drainage tube. During the installation process, pancreatic juice entering the drainage tube from the pancreas may leak out through the gap between the drainage tube and the external tube, causing external contamination and increasing the cleaning burden. Summary of the Invention

[0005] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. This invention can drain pancreatic juice from the pancreas externally or internally, and can switch from external drainage to internal drainage, so that the drainage method can be selected arbitrarily according to actual needs, making it more flexible in use.

[0006] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. The drainage method of this invention can be changed from external drainage to internal drainage. Compared with the existing external drainage method, it avoids the interference of the drainage tool located outside the body with normal life, improves the patient's quality of life, and facilitates the implementation of postoperative adjuvant therapy, enabling the patient to recover quickly.

[0007] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. The drainage method of this invention can be changed from external drainage to internal drainage. Compared with the existing external drainage method, it effectively avoids the situation that the patient's postoperative digestive and absorptive function will be affected by the large loss of pancreatic juice, and improves the patient's postoperative nutritional status.

[0008] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. The intestinal tube of this invention is kept inserted into the pancreas to drain pancreatic juice from the pancreas, while maintaining support for the pancreaticojejunostomy. Compared with existing external drainage methods, this effectively avoids the situation where the pancreaticojejunostomy narrows due to the removal of the drainage tool, which can lead to recurrent pancreatitis.

[0009] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. The external tube of this invention can push the intestinal tube to move and separate from the outer sleeve. The intestinal tube is used to drain pancreatic juice from the pancreas. Before the intestinal tube is installed in place, the outer sleeve always covers the opposite ends of the intestinal tube and the external tube. Compared with the prior art, this effectively prevents pancreatic juice entering the intestinal tube from the pancreas from flowing directly to the outside through the gap between the intestinal tube and the external tube, thus avoiding external contamination and eliminating unnecessary cleaning work.

[0010] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. The external tube of this invention can move the intestinal tube to separate it from the external kit, and the pancreatic juice in the pancreas is drained internally using the intestinal tube. In this process, no endoscope is required, so there is no trauma to the human body caused by the insertion of an endoscope into the human body.

[0011] One advantage of this invention is that it provides a pancreatic juice drainage tool and its method of use. The intestinal tube and the external tube of this invention are held in place by a reinforcing component, and the intestinal tube is held against the external tube by traction, thereby increasing the firmness of the intestinal tube and the external tube in the external kit, preventing the intestinal tube and / or the external tube from falling off during installation, and ensuring that the pancreatic juice flowing through the intestinal tube can be guided into the external tube as much as possible before the intestinal tube is installed in place, reducing the possibility of pancreatic juice leakage.

[0012] To achieve at least one of the above advantages of the present invention, the present invention provides a pancreatic juice drainage tool, the pancreatic juice drainage tool comprising:

[0013] A drainage tube comprising an intestinal tube and an external tube, the intestinal tube having at least one drainage port, the intestinal tube being inserted into the pancreas at one end forming the drainage port to guide pancreatic juice out of the pancreas, and the external tube being disposed on the side of the intestinal tube away from the drainage port.

[0014] An outer casing having an mounting channel and an outlet communicating with the mounting channel, wherein both the intestinal tube and the external tube are sealed and inserted into the outer casing and are movable along the extension direction of the mounting channel, the intestinal tube being detachably mounted to the outer casing, and when the end of the intestinal tube forming the drainage port is inserted into the pancreas, the external tube is movable toward the intestinal tube within the mounting channel to push the intestinal tube out of the mounting channel from the outlet to separate it from the outer casing, at which time pancreatic juice guided by the intestinal tube is introduced into the intestine;

[0015] A reinforcement component includes a fixing wire and a winding member. The winding member is installed on the intestinal tube. When the intestinal tube with the winding member installed is inserted into the outer sleeve, the fixing wire is wound around the winding member and its two ends extend arbitrarily into the outer tube and pass through the tube wall of the outer tube. Both ends of the fixing wire are connected to the outer sleeve. The outer tube is kept inserted into the outer sleeve by the winding member, and the intestinal tube connected to the winding member is kept inserted into the outer sleeve and abuts against the outer tube by the traction of the fixing wire.

[0016] According to one embodiment of the present invention, the inner diameters of the intestinal tube and the external tube are the same.

[0017] According to one embodiment of the present invention, the fixing wire is implemented as a double-strand wire.

[0018] According to one embodiment of the present invention, the winding member is implemented as a collar sleeved on the intestinal tube, and the fixing wire connected to the outer sleeve at both ends passes through the collar.

[0019] According to one embodiment of the present invention, the size of the collar is adapted to the mounting channel and is larger than the size of the outlet. During the process of the intestinal tube being pushed by the external tube and separating from the outer sleeve, the collar moves together with the intestinal tube until it abuts against the end wall of the outer sleeve that forms the outlet. At this time, the collar separates from the intestinal tube and remains in the mounting channel.

[0020] According to one embodiment of the present invention, the outer sleeve includes a tube body and a wire fixing structure. The mounting hole and the outlet are both formed in the tube body. The wire fixing structure is installed on the outer wall of the outer tube and located outside the tube body. The two ends of the fixing wire wound around the winding member are arbitrarily connected to the tube body and the wire fixing structure.

[0021] According to one embodiment of the present invention, one end of the fixing wire wound around the winding member extends into the external tube and passes through the tube wall of the external tube to connect with the sleeve body, and the other end of the fixing wire extends into the gap between the inner wall of the mounting channel and the external tube and passes through the end wall of the sleeve body to connect with the fixing structure. The fixing wire can apply opposing traction forces to the intestinal tube and the external tube to keep the intestinal tube and the external tube in contact.

[0022] According to one embodiment of the present invention, one end of the fixing wire wound around the winding member extends into the outer tube and passes through the tube wall of the outer tube to connect with the sleeve body, and the other end of the fixing wire extends into the outer tube and passes through the tube wall of the outer tube to connect with the fixing structure.

[0023] According to one embodiment of the present invention, the suture fixing structure is detachably sleeved on the outside of the external tube. When the intestinal tube is kept inserted into the cannula body, the suture fixing structure is held against the cannula body by the traction force of the fixing line.

[0024] To achieve at least one of the above advantages of the present invention, the present invention provides a method for using a pancreatic juice drainage tool, the method of using the pancreatic juice drainage tool comprising the following steps:

[0025] One end of the intestinal tube that forms the drainage port is inserted into the pancreas;

[0026] Cut off the portion of the fixing line that connects to the outer kit;

[0027] By applying force to the external tube to move the intestinal tube within the mounting channel to remove it from the outlet, the intestinal tube is separated from the external kit;

[0028] The external tube and the external kit are withdrawn from the body, and the fixation line is brought out together to facilitate internal drainage using the intestinal tube. Attached Figure Description

[0029] Fig. 1 A schematic diagram of the structure of the pancreatic fluid drainage tool of the present invention is shown.

[0030] Fig. 2 A cross-sectional view of the pancreatic fluid drainage tool of the present invention is shown.

[0031] Fig. 3 A partial structural cross-sectional view of the pancreatic fluid drainage tool described in this invention is shown. Detailed Implementation

[0032] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0033] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as limiting this invention.

[0034] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0035] refer to Figs. 1-3 A preferred embodiment of the pancreatic juice drainage tool according to the present invention will be described in detail below. The pancreatic juice drainage tool includes a drainage tube 10 and an outer sleeve 20. The drainage tube 10 includes an intestinal tube 11 and an external tube 12. The intestinal tube 11 has at least one drainage port 1101. The intestinal tube 11 is inserted into the pancreas to guide pancreatic juice out of the pancreas. The external tube 12 is disposed on the side of the intestinal tube 11 away from the drainage port 1101.

[0036] The outer casing 20 has an mounting channel 201 and an outlet 202 communicating with the mounting channel 201. Both the intestinal tube 11 and the external tube 12 are sealed and inserted into the outer casing 20 and can move along the extension direction of the mounting channel 201. The intestinal tube 11 is detachably mounted to the outer casing 20. When the end of the intestinal tube 11 forming the drainage port 1101 is inserted into the pancreas, the external tube 12 can move towards the intestinal tube 11 within the mounting channel 201 to push the intestinal tube 11 out of the mounting channel 201 through the outlet 202 to separate it from the outer casing 20. At this time, pancreatic juice guided by the intestinal tube 11 is introduced into the intestine to achieve internal drainage.

[0037] During this process, the outer sleeve 20 is designed to be detachably sealed to the intestinal tube 11 and sealed to the external tube 12. This ensures that the outer sleeve 20 always covers the opposite ends of the intestinal tube 11 and the external tube 12 before the intestinal tube 11 is installed in place. This prevents pancreatic juice entering the intestinal tube 11 from flowing directly to the outside through the gap between the intestinal tube 11 and the external tube 12, thus avoiding external contamination and eliminating unnecessary cleaning work.

[0038] It is worth mentioning that the pancreatic juice drainage tool can perform external drainage by inserting the intestinal tube 11 into the pancreas, and apply a pushing force to the intestinal tube 11 through the external tube 12 to separate it from the external fitting 20, thereby converting external drainage into internal drainage. In this way, the drainage method can be arbitrarily selected according to actual needs, making it more flexible in use.

[0039] Furthermore, in the early postoperative period, the pancreatic juice drainage tool can be used for external drainage, and one month postoperatively, the intestinal tube 11 can be used for internal drainage. Compared to existing external drainage methods, this avoids the interference of the external drainage tool with normal life, improves the patient's quality of life, and facilitates postoperative adjuvant therapy, enabling the patient to recover quickly. In addition, by switching from external to internal drainage, compared to existing external drainage methods, the patient's postoperative digestive and absorptive functions are effectively avoided due to significant pancreatic juice loss, thus improving the patient's postoperative nutritional status. Furthermore, by maintaining its insertion into the pancreas to support the pancreaticojejunostomy, the intestinal tube 11 effectively avoids stenosis of the pancreaticojejunostomy due to the removal of the drainage tool, thus preventing recurrent pancreatitis.

[0040] Preferably, the inner diameters of the intestinal tube 11 and the external tube 12 are the same, so that before the intestinal tube 11 is installed in place, the pancreatic juice flowing into the intestinal tube 11 can flow smoothly out of the body through the external tube 12.

[0041] refer to Figs. 1-2The pancreatic fluid drainage tool further includes a reinforcement component 30, which includes a fixing wire 31 and a winding member 32. The winding member 32 is installed on the intestinal tube 11. When the intestinal tube 11 with the winding member 32 installed is inserted into the outer sleeve 20, the fixing wire 31 is wound around the winding member 32, and both ends of the fixing wire 31 extend arbitrarily into the outer tube 12 and pass through the tube wall of the outer tube 12. Both ends of the fixing wire 31 are connected to the outer sleeve 20. The external tube 12 is held in place by the winding member 32 and inserted into the outer sleeve 20. The intestinal tube 11, connected to the winding member 32, is held in place by the traction of the fixing line 31 and abuts against the external tube 12. This increases the firmness of the intestinal tube 11 and the external tube 12 in the outer sleeve 20, preventing the intestinal tube 11 and / or the external tube 12 from falling off during installation. It also ensures that before the intestinal tube 11 is installed in place, the pancreatic juice flowing through the intestinal tube 11 can be introduced into the external tube 12 as much as possible, reducing the possibility of pancreatic juice leakage.

[0042] Specifically, after inserting one end of the intestinal tube 11, which forms the drainage port 1101, into the pancreas, the portion connecting one end of the fixing line 31 to the outer sleeve 20 is cut off. The outer sleeve 12 is moved within the mounting channel 201 by external force, pushing the intestinal tube 11 out of the outlet 202 to separate it from the outer sleeve 20. Once the intestinal tube 11 is in place, the outer sleeve 20 and the outer sleeve 12 are pulled out. The intestinal tube 11 remains inserted into the pancreas, with one end of the intestinal tube 11 away from the drainage port 1101 placed inside the intestine, so that the pancreatic juice drained through the intestinal tube 11 can be introduced into the intestine to achieve internal drainage.

[0043] Preferably, the fixing line 31 is implemented as a double-stranded line, which effectively reduces the probability of the fixing line 31 breaking compared to a single-stranded line, ensuring that the pancreatic fluid drainage tool can be used normally.

[0044] Preferably, the winding member 32 is implemented as a collar fitted onto the intestinal tube 11, with the fixing wire 31, whose ends are connected to the outer sleeve 20, passing through the collar so that the intestinal tube 11 remains inserted into the outer sleeve 20.

[0045] It is worth mentioning that the size of the collar is adapted to the mounting channel 201 and is larger than the size of the outlet 202. During the process of the intestinal tube 11 being separated from the outer sleeve 20 by the pushing force of the external tube 12, the collar moves together with the intestinal tube 11 until it abuts against the end wall of the outer sleeve 20 that forms the outlet 202. At this time, the collar separates from the intestinal tube 11 and remains in the mounting channel 201, so that when the external tube 12 and the outer sleeve 20 are subsequently withdrawn, the collar and the fixing line 31 can be taken out together by the outer sleeve 20, ensuring that only the intestinal tube 11 remains in the body.

[0046] Alternatively, the winding member 32 is implemented as a protrusion formed on the inner wall of the intestinal tube 11, with the fixing wire 31, connected to the outer sleeve 20 at both ends, wound around the surface of the protrusion to keep the intestinal tube 11 inserted into the outer sleeve 20. When the intestinal tube 11 is inserted into the pancreas and pushed apart from the outer sleeve 20 by the external tube 12, the protrusion remains in the body together with the intestinal tube 11.

[0047] refer to Fig. 2 Furthermore, the outer sleeve 20 includes a tube body 21 and a wire fixing structure 22. The mounting hole 201 and the outlet 202 are both formed in the tube body 21. The wire fixing structure 22 is installed on the outer wall of the outer tube 12 and is located outside the tube body 21. The two ends of the fixing wire 31, which is wound around the winding member 32, are arbitrarily connected to the tube body 21 and the wire fixing structure 22.

[0048] Preferably, one end of the fixing wire 31, which is wound around the winding member 32, extends into the external tube 12 and passes through the wall of the external tube 12 to connect with the cannula body 21. The other end of the fixing wire 31 extends into the gap between the inner wall of the mounting channel 201 and the external tube 12 and passes through the end wall of the cannula body 21 to connect with the fixing structure 22, so that the intestinal tube 11 and the external tube 12 can be held in place in the cannula body 21 with their ends abutting each other using the fixing wire 31.

[0049] It is worth mentioning that the fixing line 31 can apply opposing traction forces to the intestinal tube 11 and the external tube 12 to keep the intestinal tube 11 and the external tube 12 in contact, improve the tightness of the contact between the intestinal tube 11 and the external tube 12, and effectively prevent the pancreatic juice flowing through the intestinal tube 11 and being guided to the external tube 12 from leaking.

[0050] As deformable, one end of the fixing wire 31 wound around the winding member 32 extends into the external tube 12 and passes through the tube wall of the external tube 12 to connect with the cannula body 21, and the other end of the fixing wire 31 extends into the external tube 12 and passes through the tube wall of the external tube 12 to connect with the fixing structure 22, so that the intestinal tube 11 is pulled to abut against the external tube 12 and kept inserted into the cannula body 21.

[0051] In one embodiment, one end of the fixing wire 31, which is wound around the winding member 32, is connected to the cannula body 21, and the other end of the fixing wire 31 extends into the external tube 12 and passes through the tube wall of the external tube 12 to be connected to the fixing structure 22, so that the intestinal tube 11 is pulled to abut against the external tube 12 and kept inserted into the cannula body 21.

[0052] Those skilled in the art will understand that both ends of the fixing wire 31, which is wound around the winding member 32, pass through the wall of the external tube 12 and are connected to the cannula body 21 or the fixing structure 22. This can also achieve the same effect of pulling the intestinal tube 11 to abut against the external tube 12 and keeping it inserted into the cannula body 21. This application is not limited in this respect.

[0053] Preferably, when one end of the fixing line 31 is connected to the fixing structure 22, the fixing structure 22 is detachably sleeved on the outside of the external tube 12. When the intestinal tube 11 is inserted into the cannula body 21, the fixing structure 22 is held against the cannula body 21 by the traction force of the fixing line 31. The fixing structure 22 can be removed before cutting the fixing line 31, increasing the convenience of the cutting operation.

[0054] In one embodiment, when one end of the fixing line 31 is connected to the fixing structure 22, the fixing structure 22 is implemented as a protrusion formed on the outer wall of the external tube 12, and subsequent operations are performed by directly cutting the fixing line 31 connected to the protrusion.

[0055] This application also proposes a method for using a pancreatic juice drainage tool, including the following steps:

[0056] One end of the intestinal tube 11 that forms the drainage port 1101 is inserted into the pancreas;

[0057] Cut off the portion of the fixing line 31 that connects to the outer sleeve 20 so that the external tube 12 and the intestinal tube 11 can move freely within the mounting channel 201;

[0058] By applying force to the external tube 12 to push the intestinal tube 11 within the mounting channel 201 to move it out of the outlet 202, the intestinal tube 11 is separated from the external kit 20.

[0059] The external tube 12 and the external fitting 20 are pulled out of the body, and the fixation line 31 is brought out together to allow for internal drainage using the intestinal tube 11.

[0060] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. A pancreatic juice drainage tool, characterized in that, The pancreatic juice drainage tool includes: A drainage tube comprising an intestinal tube and an external tube, the intestinal tube having at least one drainage port, the intestinal tube being inserted into the pancreas at one end forming the drainage port to guide pancreatic juice out of the pancreas, and the external tube being disposed on the side of the intestinal tube away from the drainage port. An outer casing having an mounting channel and an outlet communicating with the mounting channel, wherein both the intestinal tube and the external tube are sealed and inserted into the outer casing and are movable along the extension direction of the mounting channel, the intestinal tube being detachably mounted to the outer casing, and when the end of the intestinal tube forming the drainage port is inserted into the pancreas, the external tube is movable toward the intestinal tube within the mounting channel to push the intestinal tube out of the mounting channel from the outlet to separate it from the outer casing, at which time pancreatic juice guided by the intestinal tube is introduced into the intestine; A reinforcement component includes a fixing wire and a winding member. The winding member is installed on the intestinal tube. When the intestinal tube with the winding member installed is inserted into the outer sleeve, the fixing wire is wound around the winding member and its two ends extend arbitrarily into the outer tube and pass through the tube wall of the outer tube. Both ends of the fixing wire are connected to the outer sleeve. The outer tube is kept inserted into the outer sleeve by the winding member, and the intestinal tube connected to the winding member is kept inserted into the outer sleeve and abuts against the outer tube by the traction of the fixing wire. The winding member is implemented as a collar sleeved on the intestinal tube, with the fixing wires connected to the outer sleeve at both ends passing through the collar. The size of the collar is adapted to the mounting channel and is larger than the size of the outlet. During the process of the intestinal tube being pushed by the outer tube and separating from the outer sleeve, the collar moves together with the intestinal tube until it abuts against the end wall of the outer sleeve that forms the outlet. At this time, the collar separates from the intestinal tube and remains in the mounting channel.

2. The pancreatic juice drainage tool according to claim 1, characterized in that, The intestinal tube and the external tube have the same inner diameter.

3. The pancreatic juice drainage tool according to claim 1, characterized in that, The fixed line is implemented as a double-strand line.

4. The pancreatic juice drainage tool according to claim 1, characterized in that, The outer casing includes a tube and a wire fixing structure. The mounting hole and the outlet are both formed in the tube. The wire fixing structure is installed on the outer wall of the outer tube and located outside the tube. The two ends of the fixing wire wound around the winding member are arbitrarily connected to the tube and the wire fixing structure.

5. The pancreatic juice drainage tool according to claim 4, characterized in that, One end of the fixing wire wound around the winding member extends into the external tube and passes through the tube wall of the external tube to connect with the sleeve body. The other end of the fixing wire extends into the gap between the inner wall of the mounting channel and the external tube and passes through the end wall of the sleeve body to connect with the fixing structure. The fixing wire can apply opposing traction forces to the intestinal tube and the external tube to keep the intestinal tube and the external tube in contact.

6. The pancreatic juice drainage tool according to claim 4, characterized in that, One end of the fixing wire wound around the winding member extends into the outer tube and passes through the tube wall of the outer tube to connect with the sleeve body, and the other end of the fixing wire extends into the outer tube and passes through the tube wall of the outer tube to connect with the fixing structure.

7. The pancreatic juice drainage tool according to claim 5 or 6, characterized in that, The securing structure is detachably sleeved on the outside of the external tube. When the intestinal tube remains inserted into the cannula body, the securing structure is held against the cannula body by the traction force of the securing wire.

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