Drainage catheter device

Abstract

The application discloses a drainage catheter device which is composed of a soft drainage tube, a homogeneous transparent body and a visual module based on a light source and a camera. The head end of the homogeneous transparent body is arc-shaped, the tail end is flat and is connected with the drainage tube with the diameter being adapted to the drainage tube. The length of the transparent body is greater than the object distance of the visual module. One or more side holes are arranged on the side of the drainage tube close to the tail end of the transparent body, and the side holes are drainage holes of the drainage tube. The drainage catheter device adopts a "one cavity and two uses" method, can be used as a visual cavity and a drainage cavity, and can ensure that the diameter of the soft drainage tube is thin and the brain tissue is less damaged.

Description

Technical Field

[0001] This invention belongs to the field of neurosurgical instruments, specifically relating to a visual drainage device and method. Background Technology

[0002] Cerebral hemorrhage has a rapid onset and progression, with high mortality and disability rates, classifying it as a critical and severe illness. Minimally invasive, simple, and rapid procedures are currently important clinical treatment methods for cerebral hemorrhage patients. Every blood vessel and nerve in the brain is crucial, and treating cerebral hemorrhage patients with the most minimally invasive techniques (using the thinnest possible drainage catheters) is the ideal goal of every physician.

[0003] Puncture-guided drainage is the most minimally invasive surgical method for treating cerebral hemorrhage, but its entirely blind operation is a major reason for the high disability rate among cerebral hemorrhage patients. Currently, single-lumen and double-lumen (multi-lumen) tubes are used. Single-lumen tubes achieve hematoma aspiration and drainage, while double-lumen tubes, after aspiration, use one lumen for fluid infusion and another for drainage to flush and drain the intracranial hematoma, improving drainage efficiency. Adding visualization capabilities (increasing the diameter of the drainage tube) to existing drainage tubes and pursuing the ultimate in minimally invasive techniques are contradictory. How to increase visualization during the procedure without increasing the diameter of existing drainage tubes is a pressing clinical problem that needs to be solved.

[0004] Currently, most patents employ methods such as adding a visual cavity or multiple layers of tubes to achieve visual puncture (CN201420095694.7 Disposable Visual Drainage Tube, CN202010777370.1 A Visual Puncture Drainage Tube for Abdominal Paracentesis, CN202023332226.1 A Visual Puncture Drainage Device, CN202011537445.5 A Visual Puncture Device with Replaceable Puncture Head, CN201821626975.5 A Visual Drainage Tube). However, adding a visual cavity and multiple layers of tubes significantly increases the diameter of the drainage tube, increasing trauma to the cranial nerves and blood vessels. This increased trauma may weaken or even outweigh the benefits of surgical treatment, rendering the surgery meaningless. Using the most minimally invasive (smallest diameter) drainage tube under visual guidance, achieving successful puncture and placement on the first attempt, and performing surgery with minimal trauma is the dream of every clinical neurosurgeon today.

[0005] CN201410243578.X describes a visual puncture guide in a visual ventricle and subdural external drainage system. However, it does not describe the specific technical solution for imaging during puncture in the brain parenchyma. According to the description, it cannot achieve visualization within the brain parenchyma. It also uses a multi-layer cannula, which has a large diameter and causes significant trauma. Furthermore, the operation is complex and cannot be completed in one puncture and cannulation, thus failing to achieve the effect of surgical treatment.

[0006] The visual drainage component in CN 201811033467.0 does not have a zero-distance contact imaging technology for solid-like brain tissue, and therefore cannot truly achieve imaging in solid-like brain tissue. Specifically, (the ratio between the wall thickness of the visual tube head and the wall thickness of the tube body is less than or equal to 0.5), the wall thickness of the visual tube head is too thin. When encountering resistance during puncture in solid-like tissue, irregular deformation prevents the endoscope from achieving imaging. During puncture, opaque intracranial fluid enters through the drainage hole 40 and enters the tip of the endoscope, preventing imaging. This patent also lacks a technical solution to this problem, and the manufacturing process is complex, with a complex radial multi-layered structure in the tube body, greatly increasing the diameter of the drainage tube and resulting in significant trauma. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a drainage catheter device.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0009] In a first aspect, embodiments of the present invention provide a drainage conduit device, comprising a soft drainage tube and a visual module based on an integrated light source and camera. The head of the soft drainage tube is a homogeneous transparent body with an arc-shaped head end and a flat tail end. An installation groove is provided within the homogeneous transparent body for mounting and securing the head of the visual module, preventing bloody liquid entering through the side hole from contaminating the lens of the visual module and thus preventing it from achieving the visual function. Furthermore, the length of the homogeneous transparent body is greater than or equal to the object distance of the visual module. A drainage hole is provided on the side wall of the soft drainage tube near the tail of the homogeneous transparent body.

[0010] Secondly, embodiments of the present invention also provide a drainage catheter device.

[0011] The device includes a flexible drainage tube. Along the axial direction of the flexible drainage tube, two independent cavities are formed within it: a first cavity and a second cavity. The head of the flexible drainage tube is a homogeneous transparent body with an arc-shaped head and a flat tail. An installation groove and a drainage channel are provided within the homogeneous transparent body. The installation groove communicates with the first cavity and is used to install and secure the head of a visual module. The first cavity is used to install the tube body portion of the visual module, and the distance between the bottom of the installation groove and the arc-shaped head of the transparent body is greater than or equal to the object distance of the visual module. The drainage channel communicates with a drainage hole located on the side of the homogeneous transparent body, and the second cavity communicates with the drainage channel. An injection side hole is also provided on the side wall of the first cavity.

[0012] The beneficial effects of the above embodiments of the present invention are as follows:

[0013] 1. The first novel drainage catheter device proposed in this invention adopts a "dual-purpose" method, serving as both a visual cavity and a drainage cavity. This ensures a smaller diameter of the soft drainage tube, minimizing trauma to brain tissue. Building upon the original function of aspirating and draining hematoma, the lumen adds the ability to visually measure hematoma during puncture, eliminating the need for additional lumens or diameters. This improves the accuracy of surgical placement and, in principle, avoids the risk of brain tissue damage from partial hematoma aspiration. The overall structure is simple, easy to implement, and has better universality, reducing surgical difficulty and improving surgical efficiency. Specifically, the visual module is inserted into the soft drainage tube as a rigid guide needle to ensure the tube is straight and rigid, making the length of the drainage tube consistent with the length of the endoscope. The visual module is inserted into the inverted conical pit for direct puncture, and the entire puncture process is visible. During the procedure, the length of the hematoma in the puncture direction can be measured by the upper and lower boundary images of the hematoma. Adjustments can be made to ensure that the side hole of the soft drainage tube is within the hematoma cavity. Then, the visual module is removed, and the tail end of the soft drainage tube is connected to a syringe for aspiration to partially remove the hematoma. After rapid intracranial decompression, the soft drainage tube is left in the brain for postoperative drainage of residual hematoma. Simultaneously, because this application adds visual functionality, to prevent hematoma contamination of the lens and obstruction of vision, this invention designs a transparent body with a mounting groove. The mounting groove secures the head of the lens, preventing hematoma entering from the drainage head from entering the mounting groove and contaminating the lens, thus losing its visual function.

[0014] 2. The second novel drainage catheter device proposed in this invention is based on a multi-lumen tube, with added visual functionality, realizing multi-purpose use of the first cavity (injection cavity). It includes a soft drainage tube and a visual module based on an integrated light source and camera. Along the axial direction of the soft drainage tube, two independent cavities are formed within it. One cavity houses the visual module, and the other serves as the drainage cavity. Without changing the diameter of the existing irrigation drainage tube, it adds visual puncture for hematoma location and aspiration during the puncture process. This avoids the risk of brain tissue damage from hematoma aspiration at the principle level and enables postoperative irrigation and drainage, improving hematoma clearance efficiency. The overall structure is simple, easy to implement, and has better universality, reducing surgical difficulty and improving surgical efficiency. Furthermore, because this application adds visual functionality, to prevent hematoma contamination of the lens and obstruction of vision, this invention designs a transparent body with a mounting groove. The mounting groove secures the lens head, preventing hematoma entering from the injection side hole from entering the mounting groove and contaminating the lens. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of the novel drainage catheter device disclosed in Embodiment 1 of the present invention;

[0017] Figure 2 This is an enlarged schematic diagram of the head of the novel drainage catheter device disclosed in Embodiment 1 of the present invention;

[0018] Figure 3 This is a schematic diagram of the head of the novel drainage catheter device disclosed in Embodiment 1 of the present invention after being placed into the visualization module;

[0019] Figure 4 This is a schematic diagram of the overall structure of the novel drainage catheter device disclosed in Embodiment 2 of the present invention;

[0020] Figure 5 This is an enlarged schematic diagram of the head of the novel drainage catheter device disclosed in Embodiment 2 of the present invention;

[0021] Figure 6 This is a schematic diagram of the head of the novel drainage catheter device disclosed in Embodiment 2 of the present invention after being placed into the visualization module;

[0022] Figure 7 These are schematic diagrams of the visual module disclosed in Embodiments 1 and 2 of the present invention;

[0023] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0024] 1 Homogeneous transparent body, 2 Inverted conical pit, 2-1 Pit bottom, 2-2 Opening, 3 Drainage hole, 4 Visual module, 5 Soft drainage tube;

[0025] 6. Visual cavity, 7. Drainage cavity, 8. Injection side hole, 9. Soft drainage tube, 10. Drainage hole, 11. Homogeneous transparent body, 12. Inverted conical pit;

[0026] 4-1—Ring LED light, 4-2—Optical imaging lens, 4-3—Miniature CMOS image sensor, 4-4—Base, 4-5—Outer tube, 4-6—Cable, 4-7—Plug. Detailed Implementation

[0027] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, the present invention proposes a novel drainage catheter device.

[0030] In this embodiment, the end near the brain (heart) is defined as the head (proximal) end, and the end far from the brain (heart) is defined as the tail (terminal, distal) end.

[0031] In a typical embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 3 As shown, the novel drainage conduit device proposed in this embodiment consists of a soft drainage tube 5, a homogeneous transparent body 1, and a visual module 4 based on an integrated light source and camera. The head of the soft drainage tube 5 is the homogeneous transparent body 1. The homogeneous transparent body 1 and the soft drainage tube 5 are integrally formed or separately snapped together, preferably integrally formed. The head end of the homogeneous transparent body 1 is arc-shaped, and the tail end is flat. The diameter of the homogeneous transparent body 1 is adapted to that of the soft drainage tube 5. The soft drainage tube 5 is connected to the tail end of the homogeneous transparent body 1. The length of the homogeneous transparent body 1 is greater than or equal to the object distance of the visual module 4. One or more drainage holes 3 are provided on the side of the drainage tube 5 near the tail end of the homogeneous transparent body 1. The drainage hole 3 is the drainage hole of the drainage tube.

[0032] Furthermore, a circular concave inverted cone-shaped pit 2 is provided at the center of the longitudinal direction of the viewing module at the tail end of the homogeneous transparent body 1. The bottom 2-1 of the pit is flat and smooth, and the diameter of the bottom 2-1 is larger than the diameter of the opening 2-2, while the diameter of the opening 2-2 is slightly smaller than the outer tube diameter of the viewing module. The purpose of this design is to allow the viewing module to be securely held within the concave inverted cone-shaped pit of the homogeneous transparent body. Furthermore, the distance between the bottom of the pit and the arc-shaped head of the transparent body is greater than or equal to the object distance of the viewing module.

[0033] During use, the visual module is inserted into the aforementioned inverted conical pit, and the opening tightly wraps around the outer tube of the visual module to prevent tissue fluid or bloody cerebrospinal fluid entering through the side hole of the soft drainage tube from entering the front end of the visual module lens and causing imaging failure; and when drainage is performed, the visual module can be pulled out from the inverted conical pit for drainage. After the intracranial hematoma liquefies, it can be drained out of the body through the drainage tube hole 3.

[0034] Furthermore, the aforementioned visual module consists of a CMOS-based miniature image sensor base (compared to CCD image sensors, CMOS image sensors are smaller and thinner, and can be installed in a space with a diameter of 2mm), an optical lens group, an LED cold light source, and a metal outer tube; the LED cold light source is placed at the head end of the metal outer tube and arranged in a ring around the optical lens group, with the lens group, CMOS image sensor base, and signal cable placed in sequence inwards; the rear end of the visual module is provided with an image orientation mark.

[0035] The visual module diagram is as follows: Figure 7 As shown, it comprises: a ring light 4-1 composed of multiple LEDs, an optical imaging lens 4-2, a miniature CMOS image sensor 4-3, a base 4-4, an outer tube 4-5, a cable 4-6, and a plug 4-7; as shown Figure 6 As shown, a ring light 4-1 composed of multiple LEDs is installed along the inner wall of the outer tube 4-5 at the head of the outer tube 4-5. An optical imaging lens 4-2 is installed at the center of the end of the outer tube 4-5. A miniature CMOS image sensor 4-3 is fixed behind the optical imaging lens 4-2 and is fixed on the base 4-4. The base 4-4 is fixed inside the outer tube 4-5. The miniature CMOS image sensor 4-3 is connected to the plug 4-7 via a cable 4-6.

[0036] The ring-shaped LED light at the front end of the visual module emits light, which passes through the transparent part of the front end of the soft drainage tube to reach the brain tissue or hematoma (lesion) at the head end. The light reflected by the tissue at the curved end face of the soft drainage tube enters the optical imaging lens 4-2 of the visual module through the transparent part of the front end of the soft drainage tube and is sensed and imaged by the CMOS image sensor 4-3. The image is then displayed on the display at the rear end via a signal line, realizing the contact imaging function. This enables visual puncture to locate the hematoma and allows the front side hole of the soft drainage tube to be placed in a suitable position within the hematoma cavity.

[0037] It should be further explained that the aforementioned soft drainage tube and circular homogeneous transparent body can be welded together, or they can be integrally formed during processing, depending on the actual needs.

[0038] The process of using this invention is as follows:

[0039] After craniotomy, a CMOS-based visual module is inserted into the soft drainage tube as a rigid guide needle to ensure the tube is straight and rigid, and that its length matches that of the endoscope. The visual module is inserted into an inverted conical recess (ensuring a good seal between the endoscope tip and the soft drainage tube tip to prevent fluid entering through the side hole of the drainage tube from entering between the endoscope and the soft drainage tube's sealing surface, thus affecting imaging). Direct puncture is performed, and the entire puncture process is visible. During the procedure, the length of the hematoma in the puncture direction can be measured using images of the upper and lower boundaries of the hematoma. Adjustments are made to ensure that the side hole of the soft drainage tube is within the hematoma cavity. The visual module is then removed, and a syringe is connected to the tail end of the soft drainage tube for aspiration to partially remove the hematoma. After rapid intracranial decompression, the soft drainage tube is left in the brain for postoperative drainage of any remaining hematoma.

[0040] Example 2

[0041] This embodiment also discloses a drainage catheter device, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the novel drainage conduit device disclosed in this embodiment includes a soft drainage tube 9 and a visual module 4 based on an integrated light source and camera used in conjunction with it. The head of the soft drainage tube 9 is a homogeneous transparent body 11. The configuration of the homogeneous transparent body 11 is basically the same as in Embodiment 1. The homogeneous transparent body 11 is integrally formed with the soft drainage tube 9 or separately snapped together, preferably integrally formed. The head end of the homogeneous transparent body 11 is arc-shaped, and the tail end is flat. The diameter of the homogeneous transparent body 11 is adapted to that of the soft drainage tube 9. The soft drainage tube 9 is connected to the tail end of the homogeneous transparent body 11. The length of the homogeneous transparent body 11 is greater than or equal to the object distance of the visual module 4. An installation groove and a drainage channel are provided in the homogeneous transparent body. The soft drainage tube in this embodiment has two cavities. Specifically, along the axial direction of the soft drainage tube 9, two independent cavities are formed inside the soft drainage tube 9. The cavity has two chambers, one of which is a visual cavity 6 (corresponding to the first cavity mentioned earlier). The visual cavity 6 is used to house the tube part of the visual module 4, which integrates a light source and a camera, or later as an injection and flushing cavity. The other cavity is used as a drainage cavity 7 (corresponding to the second cavity mentioned earlier), mainly for drainage. The mounting groove is connected to the visual cavity 6. The mounting groove is used to install and lock the head of the visual module. The visual cavity 6 is used to install the tube part of the visual module. The distance between the bottom of the mounting groove and the arc-shaped head end of the transparent body is greater than or equal to the object distance of the visual module. The drainage channel is connected to the drainage hole 10 provided on the side of the homogeneous transparent body. The second cavity is connected to the drainage channel. An injection side hole 8 is provided on the side wall of the visual cavity 6. The injection side hole 8 is used as an injection and flushing hole later. After surgery, it cooperates with the drainage hole 10 to realize the postoperative flushing and drainage function.

[0042] Furthermore, the drainage hole 10 is positioned at the front end of the circular concave inverted cone-shaped pit 12 of the homogeneous transparent body 11. During intracranial hematoma aspiration, the visual module 4 can observe whether the tissue entering the drainage hole is brain tissue or hematoma, improving surgical safety. This method also adds the function of visual aspiration of hematoma and postoperative irrigation and drainage without changing the diameter of the existing multi-lumen drainage tube, making the surgery safer and the hematoma removal efficiency higher.

[0043] Furthermore, along the longitudinal direction of the soft drainage tube, the injection side hole 8 is located behind the drainage hole 7.

[0044] Furthermore, along the longitudinal center direction of the visual module, a circular concave inverted cone-shaped pit 12 is provided at the tail end of the homogeneous transparent body 11. The bottom of the pit is flat and smooth, and the diameter of the bottom of the pit is larger than the diameter of the opening. The diameter of the opening is slightly smaller than the diameter of the outer tube of the visual module. During use, the head of the visual module is inserted into the inverted cone-shaped pit, and the opening tightly wraps around the outer tube of the visual module to prevent tissue fluid or bloody cerebrospinal fluid entering through the side hole of the soft drainage tube from entering between the head of the visual module and the inverted cone-shaped pit 12, thus affecting the imaging quality.

[0045] Furthermore, the drainage hole 10 is positioned at the front end of the bottom of the concave inverted cone-shaped pit, and the distance from the bottom plane of the pit to the tail plane of the drainage hole is greater than or equal to the imaging object distance of the visual module.

[0046] Furthermore, in this embodiment, the structure of the visual module is exactly the same as that in Embodiment 1, and will not be described again here.

[0047] The procedure for using the drainage catheter device disclosed in this embodiment is as follows:

[0048] The visual module is inserted into the visual cavity, and the drainage catheter is inserted to the location of the intracranial hematoma. Under visual guidance, the intracranial hematoma is aspirated through the drainage cavity to perform intracranial decompression. After that, the visual module 4 is removed, and then saline is injected into the intracranial cavity through the visual cavity. The saline is injected into the intracranial cavity through the injection side hole 8 to melt the remaining hematoma. At the same time, the melted hematoma continues to drain out through the drainage hole 3, realizing the postoperative irrigation and drainage function.

[0049] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A drainage catheter device comprising a soft drainage tube and a visual module, two independent cavities, a first cavity and a second cavity, are formed along the axial direction of the soft drainage tube. The head of the soft drainage tube is a homogeneous transparent body, the head end of the homogeneous transparent body is arc-shaped, the tail end is flat, an installation groove and a drainage channel are arranged in the homogeneous transparent body, the installation groove is in communication with a first cavity, the installation groove is used for installing the head of the visible module and clamping, the first cavity is used for installing the tube body part of the visible module, and the distance between the bottom of the installation groove and the arc-shaped head end of the transparent body is greater than or equal to the object distance of the visible module, the drainage channel is in communication with a drainage hole arranged on the side surface of the homogeneous transparent body, and a second cavity is in communication with the drainage channel, a liquid injection side hole is further arranged on the side wall of the first cavity; Along the longitudinal direction of the soft drainage tube, the first cavity liquid injection side hole is located behind the drainage hole; Along the central direction of the first cavity, the installation groove is arranged at the tail end of the homogeneous transparent body, the installation groove is a circular concave inverted conical pit, the bottom of the pit is flat and smooth, the diameter of the pit bottom is greater than the diameter of the opening, and the diameter of the opening is slightly smaller than the outer tube diameter of the visible module, and the distance between the bottom of the circular concave inverted conical pit and the arc-shaped head end of the transparent body is greater than or equal to the object distance of the visible module.

2. The drainage catheter device of claim 1, wherein, The drainage channel is arranged in parallel with the axis of the homogeneous transparent body.

3. The drainage catheter device of claim 1, wherein, The position of the drainage hole is arranged at the front end of the bottom of the circular concave inverted conical pit, and the distance between the position plane of the bottom and the tail end plane of the drainage hole is greater than or equal to the imaging object distance of the visible module.

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