A visible drainage tube

Abstract

The present invention provides a visible drainage tube, which relates to the field of minimally invasive medical devices and includes an inner tube for an endoscope to move therein and an outer tube sleeved outside the inner tube for the inner tube and the endoscope to move therein. The inner tube and the outer tube are in clearance fit; the inner tube and the outer tube are transparent and visible, and the wall thickness is uniform; one end of the inner tube is closed, and the other end is provided with an opening for the endoscope to enter; both ends of the outer tube are open. The outer tube extends towards the inner tube near the closed end of the inner tube and is closely attached to the outer wall of the inner tube. The outer tube near the opening end of the inner tube is detachably connected to the inner tube. The beneficial effects of the present invention are as follows: When used in cooperation with an endoscope, it can accurately locate the position of the hematoma and drain at the same time, reduce the damage caused by multiple insertions, and at the same time, it can immediately observe the drainage situation and improve the drainage effect.

Description

Technical Field

[0001] The present invention relates to the field of minimally invasive medical devices, and particularly to a visible drainage tube. Background Art

[0002] The existing brain hematoma puncture drainage technology mainly performs external positioning based on CT images before surgery, and then punctures and drains according to the positioning points. However, during the puncture and drainage process, since the intracranial puncture process cannot be seen and it completely depends on the medical knowledge and experience of the doctor, this technology has high requirements for the doctor's skills, resulting in the inability to accurately puncture the drainage tube opening to the center of the hematoma, making it difficult to master unexpected situations, thus leading to poor hematoma drainage effect, slow patient recovery, and even poor prognosis.

[0003] Therefore, there is a need for a visible drainage tube that can be used in conjunction with an endoscope. By using the visible drainage tube in combination with the existing endoscope used in the brain, the location of the brain hematoma can be accurately positioned. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing drainage tube cannot be used in conjunction with an endoscope, cannot accurately locate the hematoma position, causes harm to the patient by inserting the drainage tube multiple times based on experience, and it is difficult to master the drainage process.

[0005] To solve the above technical problems, the present invention discloses a visible drainage tube, and the technical solution of the present invention is implemented as follows:

[0006] A visible drainage tube includes an inner tube for an endoscope or a drain to move therein and an outer tube sleeved outside the inner tube for the inner tube and the endoscope to move therein. The inner tube and the outer tube are in clearance fit; the inner tube and the outer tube are transparent and visible, and the wall thickness is uniform; one end of the inner tube is closed, and the other end is provided with an opening for the endoscope or the drain to enter; both ends of the outer tube are provided as openings. The outer tube extends towards the inner tube near the closed end of the inner tube and is in close fit with the outer wall of the inner tube. The outer tube near the opening end of the inner tube is detachably connected to the inner tube.

[0007] Preferably, the outer tube and the inner tube are fixed by a Luer connector, and the Luer connector includes a male Luer lock device and a female Luer lock device.

[0008] Preferably, the male Luer lock device is arranged on the inner tube, and the female Luer lock device is arranged on the outer tube.

[0009] Preferably, a plurality of through holes are circumferentially arranged on the outer tube at the end in close fit with the inner tube.

[0010] Preferably, scale lines are respectively arranged on the inner tube and the outer tube.

[0011] Preferably, the lengths of the inner tube and the outer tube do not exceed the length of the endoscope.

[0012] Preferably, both the inner tube and the outer tube are made of transparent materials, and the transparent materials include transparent inorganic non-metallic materials, PET, Pebax, PC, PMMA, PS, PVC, TPU, FEP, PP or PA.

[0013] Preferably, the thickness of the inner tube does not exceed 1 mm.

[0014] The beneficial effects of implementing the present invention are as follows:

[0015] 1. Through the mutual cooperation of the endoscope, the inner tube and the outer tube, the paths of the inner tube and the outer tube can be observed in real time, adjusted immediately according to the location of the hematoma, improving the accuracy of the inner tube and the outer tube, and reducing the damage to the patient caused by multiple insertions into the patient's brain according to experience.

[0016] 2. The separation of the inner tube and the outer tube can enable the hematoma to drain out of the patient's body from the outer tube, and the endoscope can observe the drainage process in real time during the drainage process so as to respond in time in case of any situation, or can also extend into the outer tube through the inner tube after the drainage is completed to observe the drainage effect, which is convenient for operation.

[0017] 3. Through holes are provided on the outer tube, so that the hematoma in the patient's brain can be drained simultaneously from the opening and the through holes of the outer tube, improving the drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of this embodiment;

[0020] Figure 2 It is a schematic structural diagram of this embodiment for showing the connection part between the outer tube and the inner tube;

[0021] Figure 3 It is a schematic structural diagram of this embodiment for showing the inner tube;

[0022] Figure 4 It is a schematic structural diagram of this embodiment for showing the outer tube.

[0023] In the above-mentioned drawings, the reference numerals in each figure respectively represent:

[0024] 1 - Inner tube; 2 - Outer tube; 3 - Luer connector; 31 - Convex Luer lock device; 32 - Concave Luer lock device; 4 - Through hole; 5 - Scale line. Detailed implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Among them, the same components are denoted by the same reference numerals. It should be noted that: the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings; the words "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0027] Embodiment: A visible drainage tube, as Figure 1 and Figure 2 shown, includes an inner tube 1 for the endoscope to move therein and an outer tube 2 sleeved outside the inner tube 1 for the inner tube and the endoscope to move therein. The inner tube 1 and the outer tube 2 are in clearance fit; the inner tube 1 and the outer tube 2 are transparent and visible, and the wall thickness is uniform. One end of the inner tube 1 is closed, and the other end is provided with an opening for the endoscope to enter; both ends of the outer tube 2 are open. The inner tube 1 can extend into the outer tube 2 from one end of the outer tube 2. The outer tube 2 extends towards the inner tube 1 in an O shape near the closed end of the inner tube 1 and is in close fit with the outer wall of the inner tube 1. Since the end of the outer tube 2 is open, a part of the end of the closed end of the inner tube 1 extends out of the outer tube 2. The outer tube 2 is detachably connected to the inner tube 1 near the open end of the inner tube 1.

[0028] As Figure 1 and Figure 2As shown, during use, first, the outer tube 2 is sleeved on the inner tube 1, with one end of the inner tube 1 abutting against the outer tube 2 and fixed at the end far from the abutment. Thus, the inner tube 1 and the outer tube 2 become an integral whole. The endoscope is inserted into the inner tube 1. According to CT positioning, it enters along the theoretical path, and the endoscope, the inner tube 1, and the outer tube 2 are inserted into the patient's brain together. During the insertion process, the surrounding tissues can be observed in real time through the endoscope. When the hematoma position is found, the angles and positions of the outer tube 2 and the inner tube 1 are adjusted, and the drainage tube is continuously inserted until the hematoma position is accurately found through the endoscope and the inner tube 1 and the outer tube 2 are sent to the optimal position of the hematoma. Then, the abutting end of the outer tube 2 and the inner tube 1 is separated, and the other end of the outer tube 2 is connected to a drainage device such as a drainer in the prior art. The hematoma can enter the outer tube 2 through the opening at the end of the outer tube 2 and be drained out of the body. During the whole process, the endoscope and the inner tube 1 can be placed in the outer tube 2 all the time for observation. The endoscope and the inner tube 1 can move in the outer tube 2 for convenient real-time observation, or the endoscope and the inner tube 1 can be taken out of the outer tube. When needed, after flushing the outer tube 2, the endoscope and the inner tube 1 are inserted into the outer tube 2 to observe the situation of the hematoma.

[0029] Through the above method, the accurate positioning of the blood mass in the patient's brain can be achieved, reducing the errors caused by mere empirical judgment. Through the outer tube 2, the hematoma in the patient's brain can be completely drained out of the patient's body. With the cooperation of the endoscope, it is convenient to observe the situation after drainage, reducing residues and improving the hematoma drainage effect. At the same time, due to the cooperation of the inner tube 1 and the outer tube 2, only the outer tube 2 needs to be inserted into the patient's brain once, without multiple insertions, reducing multiple injuries to the patient's brain. It can also observe the drainage process in real time so as to take timely measures when something goes wrong. It is convenient and practical.

[0030] In a preferred embodiment, as Figure 1 shown, the outer tube 2 and the inner tube 1 are fixed through a Luer connector 3. The Luer connector 3 is a convenient connection device used in the medical industry, which can simplify the management of liquid and gaseous medical fluids. This kind of connector also allows multiple mutually compatible fluids to be managed using the same pipeline, thus reducing the wounds on the patient's body. The Luer connector 3 includes a male Luer lock device 31 and a female Luer lock device 32. Through the Luer connector 3, on the one hand, the sealing performance during liquid transmission can be ensured, and on the other hand, it is convenient for operation. The inner tube 1 and the outer tube 2 can be easily disassembled. In addition, other detachable structures in the prior art that can be used in the medical field and do not affect the use of the inner tube 1 and the outer tube 2 can also be used here, which will not be specifically elaborated herein.

[0031] In a preferred embodiment, as Figure 3 and Figure 4As shown, the male Luer lock device 31 is provided on the inner tube 1, and the female Luer lock device 32 is provided on the outer tube 2. This arrangement makes it more convenient to separate the inner tube 1 and the outer tube 2. When the outer tube 2 and the inner tube 1 are inserted into the patient's brain, the outer tube 2 can be fixed, and the convex surface of the male Luer lock device 31 can be rotated. In actual use, the male Luer lock device 31 and the female Luer lock device 32 can also be respectively provided on the outer tube 2 and the inner tube 1, and can be adjusted according to the actual situation.

[0032] In a preferred embodiment, as Figure 2 shown, several through holes 4 are circumferentially provided on the outer tube 2 at the end closely attached to the inner tube 1. The function of setting the through holes 4 is to increase the drainage speed. During the drainage of the blood mass, in addition to the liquid being drained through the end of the outer tube 2 when the inner tube 1 and the outer tube 2 are separated, the liquid can also enter the outer tube 4 through the through holes 4 and then be drained out of the patient's brain, improving the drainage efficiency. The through holes 4 can be evenly distributed circumferentially on the outer tube 2 or unevenly distributed. At the same time, the through holes 4 are provided on the side where the outer tube 2 is closely attached to the inner tube 1. When the inner tube 1 and the outer tube 2 are not separated, the through holes 4 are closed by the outer wall of the inner tube, reducing the situation where the liquid in the blood mass enters the outer tube through the through holes 4 before the drainage process starts, resulting in a blurred view within the endoscopic field of view.

[0033] In a preferred embodiment, as Figure 1 shown, scale lines 5 are respectively provided on the inner tube 1 and the outer tube 2. On the one hand, the scale lines 5 can be used to calibrate the depth to which the inner tube 1 and the outer tube 2 extend into the patient's brain. The approximate position of the blood mass can be estimated first. When the inner tube 1 and the outer tube 2 are close to the estimated position, the exact position of the hematoma can be found through endoscopic observation. On the other hand, the position of the endoscope can be calibrated. When the endoscope moves to the exact position inside the inner tube 1 to observe the situation of the hematoma, the scale lines 5 can be provided on the inner walls of the inner tube 2 and the outer tube 2, or on the outer walls. Setting them on the inner walls can increase the smoothness of the outer walls and reduce the damage to the patient's brain during the movement of the outer tube 2. Setting them on the outer walls makes the scale lines clearer, and can be set according to the usage situation.

[0034] In a preferred embodiment, as Figure 1 shown, the lengths of both the inner tube 1 and the outer tube 2 do not exceed the length of the endoscope. The endoscope does not completely extend into the inner tube, which facilitates the movement of the endoscope to observe different positions inside the patient's brain and reduces the inconvenience caused by the endoscope completely extending into the inner tube 1. The length of the inner tube 1 is preferably slightly longer than the length of the outer tube, which facilitates the inner tube 1 to enter or move out of the outer tube 2.

[0035] In the above-described embodiments, the inner diameter of the inner tube 1 gradually decreases towards the closed side, and the inner diameter of the closed end of the inner tube 1 is slightly smaller than the outer diameter of the endoscope. During use, when the endoscope moves to the closed side of the inner tube 1, there is a certain gap between the end of the endoscope and the inner wall of the inner tube 1, reducing the contact between the endoscope and the inner tube 1, enabling the endoscope to observe the situation in all directions so as to adjust the position of the outer tube 1, and expanding the observation range of the endoscope.

[0036] In a preferred embodiment, both the inner tube 1 and the outer tube 2 are made of transparent materials. The transparent materials include transparent inorganic non-metallic materials, PET, Pebax, PC, PMMA, PS, PVC, TPU, FEP, PP, or PA. Other transparent polymer materials in the prior art are also applicable and will not be listed one by one here. The above materials all have good gloss, chemical corrosion resistance, impact resistance, and are easy to process. They can be hot melt molded, injection molded, dip molded, or blow molded, meeting environmental protection requirements. On the one hand, the inner tube 1 and the outer tube 2 made of transparent materials can reduce the situation where substances such as blood adhere to the outer wall of the tube, causing the endoscope's field of view to be blurred, and improve the clarity of the endoscope's observation. At the same time, the inner tube 1 and the outer tube 2 made of transparent materials themselves also have a certain supporting force and will not be flattened when inserted into the patient's brain. Existing transparent materials that are not easy to adhere to blood in the prior art and can meet the usage requirements of the inner tube 1 and the outer tube 2 are also applicable.

[0037] In a preferred embodiment, the thickness of the inner tube 1 does not exceed 1 mm. The limitation on the thickness of the inner tube 1 is to reduce the reduction in the transparency of the inner tube 1 caused by the increase in thickness. The outer tube 2 should not be too thick either to reduce the patient's pain. At the same time, the inner tube 1 and the outer tube 2 need to be uniform everywhere, and both the inner tube 1 and the outer tube 2 need to be kept almost impurity-free. During the manufacturing process, it can be selected to be carried out in a vacuum environment, thereby reducing the observation error caused by the obstruction of the field of view caused by the inner tube 1 and the outer tube 2 themselves and improving the accuracy of observation. The specific thickness of the inner tube 1 can be adjusted according to the manufacturing conditions and usage conditions.

[0038] The various embodiments listed above can be combined and implemented without contradiction. Those skilled in the art can use the accompanying drawings and the above explanations of the embodiments as the basis for combining the technical features in different embodiments.

[0039] It should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A visible drainage tube, characterized in that: It includes an inner tube for the endoscope to move therein and an outer tube sleeved outside the inner tube for the inner tube and the endoscope to move therein, and the inner tube and the outer tube are in clearance fit; The inner tube and the outer tube are transparent and visible, and the wall thickness is uniform; One end of the inner tube is closed, and the other end is provided with an opening for the endoscope to enter; Both ends of the outer tube are provided as openings. The outer tube extends towards the inner tube near the closed end of the inner tube and is in close fit with the outer wall of the inner tube. The outer tube near the opening end of the inner tube is detachably connected to the inner tube; The outer tube and the inner tube are fixed by a Luer connector, and the Luer connector includes a male Luer lock device and a female Luer lock device; A plurality of through holes are circumferentially arranged on the outer tube at the end in close fit with the inner tube; The endoscope observes the drainage process in real time during drainage; The endoscope observes the drainage effect after drainage is completed.

2. The visible drainage tube according to claim 1, characterized in that: The male Luer lock device is arranged on the inner tube, and the female Luer lock device is arranged on the outer tube.

3. The visible drainage tube according to claim 1, characterized in that: Scale lines are respectively arranged on the inner tube and the outer tube.

4. The visible drainage tube according to claim 1, characterized in that: The lengths of the inner tube and the outer tube do not exceed the length of the endoscope.

5. The visible drainage tube according to claim 1, characterized in that: Both the inner tube and the outer tube are made of transparent materials, and the transparent materials include transparent inorganic non-metallic materials, PET, Pebax, PC, PMMA, PS, PVC, TPU, FEP, PP or PA.

6. The visible drainage tube according to claim 1, characterized in that: The thickness of the inner tube does not exceed 1 mm.

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