Subcutaneous implantable drainage capsule

Abstract

This application discloses a subcutaneous implantable fluid-conducting balloon, relating to the field of neurosurgical implantable medical consumables technology. Specifically, it includes a reservoir cavity and at least one fluid-conducting tube. The inner cavity of the reservoir cavity is interconnected with the lumen of each fluid-conducting tube, forming a closed fluid-conducting channel. Each fluid-conducting tube includes a cavity connection end communicating with the reservoir cavity and a fluid outlet end for fluid drainage. The fluid outlet end is provided with a fluid-conducting opening mechanism. When fluid-conducting operations are required, at least one fluid outlet opening or orifice can be opened at the fluid outlet end to allow fluid in the channel to flow outward through the opening or orifice. When no fluid-conducting operations are performed, the slit structure remains closed to prevent blockage of the opening or orifice. Due to the addition of the fluid-conducting opening mechanism, the fluid outlet of the implanted subcutaneous fluid-conducting balloon will not be blocked, and backflow will not occur.

Description

Technical Field

[0001] This application relates to the field of neurosurgical implantable medical consumables technology, specifically to a subcutaneous implantable fluid-conducting balloon. Background Technology

[0002] In routine neurosurgical treatments, when it is necessary to inject medication directly into brain tissue, such as intracerebral chemotherapy for brain tumors or intracerebral injection of neurotrophic drugs for brain injury, the Ommaya reservoir is used. Please refer to [link / reference]. Figure 1 This is a schematic diagram of the Ommaya reservoir. The Ommaya reservoir includes a small, elastic reservoir cavity 1 and a drainage tube 2 for implantation into the brain. The reservoir cavity 1 and the drainage tube 2 form a closed, repeatable subcutaneous access route, enabling long-term, minimally invasive, direct intracranial drug administration or cerebrospinal fluid drainage. Please refer to [reference needed]. Figure 2 This is a schematic diagram of a subcutaneous implantation of an Ommaya reservoir. The reservoir cavity 1 is embedded under the scalp, and the drainage tube 2 is embedded inside the brain. Please refer to this diagram. Figure 3 The diagram shows the terminal of the drainage tube 2. The drainage tube 2 has an open port 21 at its end. After scalp disinfection, medication can be injected into the reservoir sac 1 via scalp puncture. The medication is then drained from the reservoir sac 1 into the brain through the drainage tube 2 to achieve treatment. Because long-term, repeated medication drainage is required, the drainage tube 2 needs to be implanted intracranially for an extended period. Figure 3 As shown, the port 21 at the end of the fluid guide tube 2 is open, and the port 21 is easily blocked during implantation. Summary of the Invention

[0003] The main technical problem this application addresses is the easy clogging of the fluid guide tube in the Ommaya reservoir.

[0004] According to the first aspect, one embodiment provides a subcutaneous implantable fluid-conducting sac, including a fluid-retaining sac cavity and at least one fluid-conducting tube; The inner cavity of the reservoir is interconnected with the lumen of each of the liquid guiding tubes, together forming a closed liquid guiding channel; The liquid guide tube includes a cavity connection end that communicates with the liquid storage bladder cavity, and a liquid outflow end for liquid discharge. The liquid outlet end is provided with a liquid guiding opening mechanism; The liquid guiding opening mechanism is configured as follows: When a liquid guiding operation is required, at least one liquid outlet opening or liquid outlet hole can be opened at the liquid outlet end of the liquid guiding channel so that the liquid in the liquid guiding channel can flow out through the liquid outlet opening or liquid outlet hole. When no fluid guiding operation is performed, the fluid guiding channel should be kept closed.

[0005] In one embodiment, the liquid guiding opening mechanism is disposed at the end or side wall of the liquid guiding tube.

[0006] In one embodiment, the liquid guide tube is made of an elastic material; The liquid guiding opening mechanism is a slit structure formed at the end or side wall of the liquid guiding tube; During the liquid guiding operation, the liquid pressure in the liquid guiding channel increases, causing the elastic material liquid guiding tube to expand, which in turn causes the slit structure to open and form a liquid outlet, allowing the liquid in the liquid guiding channel to flow out through the liquid outlet. When no liquid guiding operation is performed, the pressure inside the liquid guiding channel tends to be balanced with the pressure outside the tube, and the liquid guiding tube relies on its own elasticity to keep the slit structure closed.

[0007] In one embodiment, the slit structure is a straight line structure; Alternatively, the gap structure may be a plurality of straight-line structures, which are arranged radially with equal intervals or at preset angles along the circumference, centered on a common intersection point.

[0008] In one embodiment, the straight structure is formed by at least two interlocking flaps; the thickness of the interlocking flaps is greater than the sidewall thickness of the fluid guide tube.

[0009] In one embodiment, the liquid guiding opening mechanism includes a liquid outlet hole formed on the side wall of the liquid guiding tube, and an elastic sealing film fixedly covering the outside of the liquid outlet hole; The elastic sealing film is tightly attached to the side wall surface of the liquid guide tube, and a slit structure is formed between the elastic sealing film and the side wall of the liquid guide tube. During the liquid guiding operation, the liquid pressure in the liquid guiding channel increases, pushing the elastic sealing membrane to expand away from the side wall of the liquid guiding tube, causing the slit structure to open, and the liquid in the liquid guiding channel flows outward sequentially through the liquid outlet and the slit structure; When no liquid guiding operation is performed, the pressure inside the liquid guiding channel tends to be balanced with the pressure outside the tube. The elastic sealing membrane relies on its own elasticity to reset and tightly adhere to the side wall of the liquid guiding tube, keeping the liquid outlet hole closed.

[0010] In one embodiment, the subcutaneous implanted fluid-conducting sac includes two or more fluid-conducting tubes, the cavity connection ends of the multiple fluid-conducting tubes are all connected to the inner cavity of the fluid-retaining sac, and each fluid-conducting tube is provided with at least one corresponding liquid outflow end, and each liquid outflow end is provided with the fluid-conducting opening mechanism.

[0011] In one embodiment, the lengths of the plurality of liquid guiding tubes are different; And, the liquid outlet of each of the liquid guide tubes is arranged in a different direction.

[0012] In one embodiment, a one-way valve is provided at the cavity connection end. The one-way valve is configured to allow liquid to flow only from the inner cavity of the reservoir cavity to the lumen of the guide tube, and to prevent liquid from flowing back from the lumen of the guide tube to the inner cavity of the reservoir cavity.

[0013] In one embodiment, at least two reinforcing rings are spaced apart along the length of the sidewall of the fluid guide tube. The reinforcing rings are integrally formed with the fluid guide tube, and the outer diameter of the reinforcing rings is larger than the outer diameter of the main body of the fluid guide tube, in order to enhance the structural strength of the fluid guide tube and prevent it from bending and becoming blocked after implantation.

[0014] According to the above embodiment, the subcutaneous implanted drainage bag, due to the addition of a drainage opening mechanism, ensures that the drainage hole of the implanted subcutaneous implanted drainage bag will not be blocked, and there will be no backflow. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the Ommaya reservoir. Figure 2 This is a schematic diagram of a subcutaneous implantation of an Ommaya reservoir. Figure 3 This is a schematic diagram of the end of the liquid delivery tube; Figure 4 This is a schematic diagram of a subcutaneous fluid-carrying bladder in one embodiment; Figure 5 This is a schematic diagram of the liquid guide tube in one embodiment; Figure 6 This is a schematic diagram of the structure of the end of the liquid guide tube in one embodiment; Figure 7 This is a schematic diagram of the end of the liquid guide tube in another embodiment. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0017] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0018] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0019] After the Ommaya reservoir's drainage tube is implanted in the brain, the operating environment at its terminal opening is completely different from that in water. In water, the water is homogeneous, free of tissue debris and cell adhesion, and has high fluidity, making blockage unlikely even with an open tube opening. However, when the tube is implanted in brain tissue, the brain contains a large amount of nerve tissue, cell debris, blood clots, and tissue secretions. These substances easily adhere to the open tube opening, and over long-term implantation, brain tissue can adhere to the opening. Simultaneously, residual medication and coagulated fluid within the drainage channel can accumulate at the opening, leading to blockage. Since clinical treatment requires long-term, repeated drug drainage through this pathway, blockage at the tube opening directly prevents proper drug delivery to the brain tissue, significantly reducing treatment effectiveness or even preventing drug administration. Therefore, for intracerebral implantation, the opening structure of the drainage tube terminal must be improved to address blockage issues in the intracerebral environment and ensure unobstructed drainage after long-term implantation.

[0020] Example 1: Please refer to Figure 4 This is a schematic diagram of a subcutaneous fluid-conducting sac in one embodiment. The subcutaneous fluid-conducting sac includes a fluid-retaining cavity 10 and at least one fluid-conducting tube 20. The inner cavity of the fluid-retaining cavity 10 is interconnected with the lumen of each fluid-conducting tube 20, forming a closed fluid-conducting channel. Each fluid-conducting tube 20 includes a cavity connection end communicating with the fluid-retaining cavity 10 and a fluid outflow end for fluid drainage. The fluid outflow end is provided with a fluid-conducting opening mechanism. In one embodiment, the fluid-conducting opening mechanism is configured as follows: When a liquid guiding operation is required, at least one liquid outlet opening or outlet hole can be opened at the liquid outlet end of the liquid guiding channel to allow the liquid in the liquid guiding channel to flow out through the liquid outlet opening or outlet hole; when no liquid guiding operation is performed, the liquid guiding channel is kept closed.

[0021] In one embodiment, the liquid guiding opening mechanism is disposed at the end or side wall of the liquid guiding tube.

[0022] Please refer to Figure 5 This is a schematic diagram of the liquid guiding tube in one embodiment, including a cavity connection end 30 and a liquid outlet end 40. The liquid guiding tube is made of an elastic material, and the liquid guiding opening mechanism is a slit structure 41 formed at the end or side wall of the liquid guiding tube. During the liquid guiding operation, the liquid pressure in the liquid guiding channel increases, causing the elastic material of the liquid guiding tube to expand, thereby opening the slit structure 41 to form an outlet opening, allowing the liquid in the liquid guiding channel to flow out through the outlet opening. When the liquid guiding operation is not performed, the pressure inside the liquid guiding channel tends to be balanced with the pressure outside the tube, and the liquid guiding tube relies on its own elasticity to keep the slit structure closed.

[0023] Please refer to Figure 6 The diagram illustrates the structure of the end of the liquid guide tube in one embodiment. In one embodiment, the slit structure is a straight-line structure 41. In another embodiment, the slit structure is multiple straight-line structures 42, which are arranged radially with equal intervals or at preset angles along the circumference, centered on a common intersection point. In one embodiment, the straight-line structure is formed by at least two interlocking flaps, wherein the thickness of the interlocking flaps is greater than the thickness of the sidewall of the liquid guide tube.

[0024] Please refer to Figure 7 The diagram below illustrates the structure of the end of the liquid guiding tube in another embodiment. In one embodiment, the liquid guiding opening mechanism includes a liquid outlet 51 formed on the side wall of the liquid guiding tube, and an elastic sealing membrane 52 fixedly covering the outside of the liquid outlet. The elastic sealing membrane 52 is tightly attached to the side wall surface of the liquid guiding tube, and a slit structure is formed between the elastic sealing membrane and the side wall of the liquid guiding tube. During the liquid guiding operation, the liquid pressure in the liquid guiding channel increases, pushing the elastic sealing membrane to expand away from the side wall of the liquid guiding tube, causing the slit structure to open, and the liquid in the liquid guiding channel flows outward sequentially through the liquid outlet and the slit structure. When the liquid guiding operation is not performed, the pressure inside the liquid guiding channel tends to be balanced with the pressure outside the tube, and the elastic sealing membrane relies on its own elasticity to reset and tightly adhere to the side wall of the liquid guiding tube, keeping the liquid outlet closed.

[0025] In one embodiment, such as Figure 4 The subcutaneous implantable fluid-conducting balloon shown includes two or more fluid-conducting tubes. The connecting ends of the tubes are all connected to the inner cavity of the reservoir, and each tube has at least one corresponding fluid outlet, each with a fluid-conducting opening mechanism. In one embodiment, the lengths of the multiple tubes are different. In another embodiment, the fluid outlets of each tube face different directions.

[0026] In one embodiment, a one-way valve is provided at the cavity connection end. The one-way valve is configured to allow liquid to flow only from the inner cavity of the reservoir cavity to the lumen of the guide tube, preventing liquid from flowing back from the lumen of the guide tube to the inner cavity of the reservoir cavity. In another embodiment, at least two reinforcing rings are spaced apart along the length of the guide tube on its sidewall. The reinforcing rings are integrally formed with the guide tube, and the outer diameter of the reinforcing rings is larger than the outer diameter of the main body of the guide tube. This is used to enhance the structural strength of the guide tube and prevent it from bending and becoming blocked after implantation.

[0027] The subcutaneous implantable fluid-conducting balloon disclosed in this application includes a reservoir cavity and at least one fluid-conducting tube. The inner cavity of the reservoir cavity is interconnected with the lumen of each fluid-conducting tube, forming a closed fluid-conducting channel. The fluid-conducting tube includes a cavity connection end communicating with the reservoir cavity and a fluid outlet end for fluid drainage. The fluid outlet end is provided with a fluid-conducting opening mechanism. When fluid drainage is required, at least one fluid outlet opening or orifice can be opened at the fluid outlet end to allow the fluid in the fluid-conducting channel to flow out through the fluid outlet opening or orifice. When no fluid drainage is performed, the slit structure remains closed to prevent the fluid outlet opening or orifice from becoming blocked. Due to the addition of the fluid-conducting opening mechanism, the fluid outlet of the implanted subcutaneous implantable fluid-conducting balloon will not be blocked, nor will backflow occur.

[0028] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A subcutaneous implantable fluid-conducting balloon, characterized in that, Includes a reservoir cavity and at least one fluid delivery tube; The inner cavity of the reservoir is interconnected with the lumen of each of the liquid guiding tubes, together forming a closed liquid guiding channel; The liquid guide tube includes a cavity connection end that communicates with the liquid storage bladder cavity, and a liquid outflow end for liquid discharge. The liquid outlet end is provided with a liquid guiding opening mechanism; The liquid guiding opening mechanism is configured as follows: When a liquid guiding operation is required, at least one liquid outlet opening or liquid outlet hole can be opened at the liquid outlet end of the liquid guiding channel so that the liquid in the liquid guiding channel can flow out through the liquid outlet opening or liquid outlet hole. When no fluid guiding operation is performed, the fluid guiding channel should be kept closed.

2. The subcutaneous implanted fluid-conducting balloon as described in claim 1, characterized in that, The liquid guiding opening mechanism is located at the end or side wall of the liquid guiding tube.

3. The subcutaneous implanted fluid-conducting balloon as described in claim 1, characterized in that, The liquid guide tube is made of an elastic material; The liquid guiding opening mechanism is a slit structure formed at the end or side wall of the liquid guiding tube; During the liquid guiding operation, the liquid pressure in the liquid guiding channel increases, causing the elastic material liquid guiding tube to expand, which in turn causes the slit structure to open and form a liquid outlet, allowing the liquid in the liquid guiding channel to flow out through the liquid outlet. When no liquid guiding operation is performed, the pressure inside the liquid guiding channel tends to be balanced with the pressure outside the tube, and the liquid guiding tube relies on its own elasticity to keep the slit structure closed.

4. The subcutaneous implanted fluid-conducting balloon as described in claim 3, characterized in that, The gap structure consists of multiple straight-line structures, which are arranged radially with equal intervals or at preset angles along the circumference, centered on a common intersection point.

5. The subcutaneous implanted fluid-conducting balloon as described in claim 4, characterized in that, The straight structure is formed by at least two interlocking flaps; the thickness of the interlocking flaps is greater than the thickness of the sidewall of the fluid guide tube.

6. The subcutaneous implanted fluid-conducting balloon as described in claim 1, characterized in that, The liquid guiding opening mechanism includes a liquid outlet hole opened on the side wall of the liquid guiding tube, and an elastic sealing film fixedly covering the outside of the liquid outlet hole. The elastic sealing film is tightly attached to the side wall surface of the liquid guide tube, and a slit structure is formed between the elastic sealing film and the side wall of the liquid guide tube. During the liquid guiding operation, the liquid pressure in the liquid guiding channel increases, pushing the elastic sealing membrane to expand away from the side wall of the liquid guiding tube, causing the slit structure to open, and the liquid in the liquid guiding channel flows outward sequentially through the liquid outlet and the slit structure; When no liquid guiding operation is performed, the pressure inside the liquid guiding channel tends to be balanced with the pressure outside the tube. The elastic sealing membrane relies on its own elasticity to reset and tightly adhere to the side wall of the liquid guiding tube, keeping the liquid outlet hole closed.

7. The subcutaneous implanted fluid-conducting balloon as described in claim 1, characterized in that, It includes two or more liquid guide tubes, the cavity connection ends of the multiple liquid guide tubes are all connected to the inner cavity of the liquid storage bladder, and each liquid guide tube is provided with at least one liquid outlet end, and each liquid outlet end is provided with the liquid guide opening mechanism.

8. The subcutaneous implanted fluid-conducting balloon as described in claim 7, characterized in that, The lengths of the multiple liquid guiding tubes are different from each other; And, the liquid outlet of each of the liquid guide tubes is arranged in a different direction.

9. The subcutaneous implanted fluid-conducting balloon as described in claim 1, characterized in that, A one-way valve is provided at the cavity connection end. The one-way valve is configured to allow liquid to flow only from the inner cavity of the reservoir cavity to the lumen of the guide tube, and to prevent liquid from flowing back from the lumen of the guide tube to the inner cavity of the reservoir cavity.

10. The subcutaneous implanted fluid-conducting balloon as described in claim 1, characterized in that, At least two reinforcing rings are spaced apart along the length of the sidewall of the fluid guide tube. The reinforcing rings are integrally formed with the fluid guide tube, and the outer diameter of the reinforcing rings is larger than the outer diameter of the main body of the fluid guide tube. This is used to enhance the structural strength of the fluid guide tube and prevent it from bending and becoming blocked after implantation.

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