A directional skin expander configured for nasal placement
By introducing a septal drainage plate and thickened silicone rubber material into the nasal skin expander, the problem of unsupported nasal expansion sac is solved, achieving a more ideal skin expansion effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
- Filing Date
- 2025-02-27
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional skin expanders are not very effective in expanding the nose, especially in the alar and dorsum areas, because the expansion capsule lacks support at the back and bottom, resulting in unsatisfactory expansion.
A directional skin expander for the nose is designed, which uses a septal drainage plate to divide the internal space of the expansion sac into an expansion section and a stabilization section, and matches it with the nasal structure through a fixation component. Thickened medical silicone rubber material is used to control the expansion direction and ensure that the fluid expands mainly in the expansion section.
It effectively solves the problem of nasal expansion capsules expanding downwards or inwards, achieving better skin expansion effects, especially in the nasal alar and nasal bridge areas.
Smart Images
Figure CN224403780U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, and in particular relates to a directional skin expander configured for the nose. Background Technology
[0002] Skin expanders are medical devices widely used in plastic surgery, primarily for repairing skin defects. They typically consist of three parts: an expander capsule, an injection chamber, and a catheter. During use, the expander is surgically implanted under the skin or muscle layer. Fluid is periodically injected into the injection chamber to increase the expander's volume, creating pressure on the surface soft tissue and causing the skin to expand.
[0003] Expanders have a wide range of applications, with conventional expanders used for the head, neck, face, chest, torso, and limbs. However, for the nasal region, particularly the alar area, which lacks bone support, using a traditional expander capsule results in unsupported back and bottom sections. This causes the capsule to sink downwards towards the back and front bottom, leading to inadequate expansion of the skin towards the target area. Similarly, while the nasal bridge has bone support, its bottom also lacks support, causing the expander capsule to sink downwards, again resulting in inadequate expansion of the skin towards the target area. Utility Model Content
[0004] The technical objective of this invention is to provide a directional skin expander configured for use on the nose to solve the problem of skin expanders.
[0005] To solve the above problems, the technical solution of this utility model is as follows:
[0006] A directional skin expander configured for use on the nose, comprising:
[0007] dilated cysts;
[0008] At least one septum drainage plate, the sidewall of which is fixedly connected to the inner wall of the dilatation sac, is configured to divide the internal space of the dilatation sac to obtain an expansion section and at least one stabilizing section.
[0009] The fixing element is circumferentially mounted on the side wall of the diaphragm drainage plate, and the end of the fixing element penetrates the bladder wall of the expansion bladder that is connected to the diaphragm drainage plate.
[0010] The fluid catheter is fixedly connected at one end to the dilation balloon and communicates with the dilation section.
[0011] The injection vessel, fixedly connected to the other end of the fluid conduit, is configured to inject liquid into the dilator via the fluid conduit.
[0012] The shape of the dilator is matched with the area of the nose to be dilated. The dilator includes a fixed surface and an expansion surface. The fixed surface is the side of the dilator connected to the area of the nose to be dilated, and the expansion surface is the side of the dilator that expands outward after being filled with fluid.
[0013] When the dilator is placed on the nasal dorsum, the fixation surface is flat and the dilation surface is curved.
[0014] When the dilator is placed on the nasal ala, both the fixation surface and the dilation surface are set in an arc shape.
[0015] When the dilation capsule is placed on the nasal dorsum, a septal drainage plate is provided inside the dilation capsule, and the septal drainage plate is located at the interface between the dilation surface and the fixation surface.
[0016] When the dilation capsule is placed on the nasal ala, it contains two septal drainage plates, namely the first septal drainage plate and the second septal drainage plate. The first and second septal drainage plates work together to divide the internal space of the dilation capsule into an expansion section and two stabilizing sections. The expansion section corresponds to the expansion surface, and the two stabilizing sections correspond to two fixing surfaces, namely the first fixing surface and the second fixing surface. The two ends of the first septal drainage plate are connected to the intersection of the expansion surface and the first fixing surface, and the intersection of the first fixing surface and the second fixing surface, respectively. One end of the second septal drainage plate is connected to the first septal drainage plate, and the other end of the second septal drainage plate is the intersection of the expansion surface and the second fixing surface, which is connected to the intersection of the second fixing surface and the first fixing surface.
[0017] The thickness of the expanded surface is less than the thickness of the fixed surface;
[0018] The expansion surface is made of a single layer of medical-grade silicone rubber;
[0019] The sac wall and septal drainage plate of the fixation surface and stabilization section are all made of thickened medical silicone rubber.
[0020] The dilation bladder and the septal drainage plate are integrated into one structure.
[0021] The partition plate has at least two drainage holes that connect the expansion section and the stabilizing section.
[0022] The fixing element is an arc-shaped slot. The arc-shaped end of the fixing element is built into the partition drainage plate. The slot of the fixing element is connected to the side wall of the partition drainage plate. The slot of the fixing element penetrates the bladder wall on the expansion bladder that is connected to the partition drainage plate.
[0023] The capacity space of the expansion section is greater than or equal to twice the capacity space of the stable section.
[0024] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:
[0025] This utility model provides a directional skin expander configured for the nose. A septal drainage plate is provided in the expansion sac. By providing a septal drainage plate, the interior is divided into an expansion part and a stabilizing part. After the liquid is injected, the liquid is mainly located in the expansion part, thereby preventing the liquid from only expanding the lower half of the expansion sac (stabilizing part) under the action of gravity.
[0026] The thickness of the expansion bladder in this invention varies, with the thickness of the expansion surface being less than that of the fixing surface. The expansion surface is made of a single layer of medical silicone rubber, while the fixing surface is made of thickened medical silicone rubber. This results in the expansion degree of the fixing surface being much lower than that of the expansion surface, effectively solving the problem of poor expansion effect of the expansion bladder.
[0027] This invention provides two partitioned drainage plates for the nasal alar region without bone support. One plate prevents the liquid from expanding only the lower half of the expansion sac under the action of gravity, while the other plate prevents the liquid from expanding inward, i.e., the expansion sac expands backward. This effectively solves the problem of poor expansion effect of the expansion sac. Attached Figure Description
[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.
[0029] Figure 1 This is a frontal schematic diagram of a directional skin expander configured on the bridge of the nose according to the present invention;
[0030] Figure 2 This is a schematic diagram of the rear side of a directional skin expander configured on the bridge of the nose according to the present invention;
[0031] Figure 3 for Figure 1 and Figure 2 Enlarged schematic diagram of the partition drainage plate section;
[0032] Figure 4 This is a schematic diagram of the structure of a directional skin expander configured in the nasal wing area according to the present invention;
[0033] Figure 5 for Figure 4 Enlarged schematic diagram of the second partition drainage plate.
[0034] Explanation of reference numerals in the attached figures
[0035] 1: Dilatation bladder; 101: Fixing surface; 102: Dilatation surface; 2: Dilatation drainage plate; 201: Drainage hole; 3: Fluid conduit; 5: First dilatation drainage plate; 6: Second dilatation drainage plate. Detailed Implementation
[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0037] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0038] The present invention provides a directional skin expander configured for the nose, which will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims.
[0039] Example 1
[0040] See Figures 1 to 3 This embodiment provides a directional skin expander configured for the nose, especially for skin expansion of the nasal dorsum, which includes: an expansion sac 1, a septal drainage plate 2, a fixation element, a fluid conduit 3, and an injection vessel.
[0041] The shape of the dilator 1 matches the area of the nose to be dilated. The dilator 1 includes a fixing surface 101 and a dilating surface 102. The fixing surface 101 is the side of the dilator 1 that connects to the area of the nose to be dilated, that is, the side that is close to the skin and is flat. The dilating surface 102 is the side of the dilator 1 that expands outward after being injected with fluid, that is, the side that is away from the skin and is arc-shaped.
[0042] Existing expanders often have a hollow internal structure. During implementation, the liquid injected into the expansion sac 1 is affected by gravity, depositing at the bottom of the expansion sac 1 and expanding downwards, resulting in poor expansion effect of the expansion surface 102. Therefore, in this embodiment, the expansion surface 102 is made of a single layer of medical-grade silicone rubber, with a thickness less than that of the fixing surface 101, to ensure that the expansion surface 102 can expand outwards more easily. More preferably, to prevent the expander from expanding inwards and downwards, the thickness of the fixing surface 101 is increased. Preferably, thickened medical-grade silicone rubber is used to reduce its elastic deformation capacity and effectively constrain the expander from expanding inwards and downwards into the skin.
[0043] Preferably, to further address the downward expansion caused by gravity of the injected liquid, a diaphragm drainage plate 2 is provided inside the expansion sac 1. The sidewall of the diaphragm drainage plate 2 is fixedly connected to the inner wall of the expansion sac 1, forming an integrated structure. This divides the internal space of the expansion sac 1 into upper and lower parts, resulting in an expansion section and a stabilizing section. The diaphragm drainage plate 2 is located at the interface between the expansion surface 102 and the stabilizing surface 101. The diaphragm drainage plate 2 needs to have a fixing member inside that allows a blunt needle to pass through; therefore, the diaphragm drainage plate 2 is also made of thickened medical-grade silicone. Specifically, at least two drainage holes 201 are provided on the diaphragm drainage plate 2, connecting the expansion section and the stabilizing section. The fixing member is circumferentially mounted on the sidewall of the diaphragm drainage plate 2, and the end of the fixing member penetrates the sac wall of the expansion sac 1 that connects with the diaphragm drainage plate 2. Specifically, the fixation element is an arc-shaped slot. The arc-shaped end of the fixation element is embedded in the diaphragm drainage plate 2, and the slot of the fixation element connects to the side wall of the diaphragm drainage plate 2. The slot of the fixation element penetrates the wall of the dilatation capsule 1 that connects with the diaphragm drainage plate 2. The fixation element embedded in the diaphragm drainage plate 2 can be used with blunt needles and medical sutures to fix the dilatation capsule 1 in place in the area to be placed on the nasal dorsum.
[0044] Specifically, the capacity space of the expansion section is greater than or equal to twice the capacity space of the stable section, so as to ensure that the expansion surface of the expansion section can expand outwards towards the skin.
[0045] Furthermore, one end of the fluid conduit 3 is fixedly connected to the dilation sac 1 and communicates with its internal dilation section; the other end of the fluid conduit 3 is fixedly connected to the injection vessel. During implementation, liquid flows from the injection vessel through the fluid conduit 3 into the dilation section, and then flows through the drainage hole 201 into the stabilizing section. Because the sac wall of the stabilizing section (the lower fixing surface 101) is made of thickened medical-grade silicone rubber, it is not easily expanded; the remaining fixing surfaces 101 (the side connected to the skin) are also made of thickened medical-grade silicone rubber and are supported by the bone at the bridge of the nose, therefore, they are also not easily expanded. Continuing to inject liquid, because the dilation surface 102 of the dilation section is a single layer of medical-grade silicone, it expands more easily. Therefore, the dilation sac 1 only expands in the direction of its dilation surface 102, thus achieving the expansion requirement in that direction.
[0046] Example 2
[0047] This embodiment provides a directional skin expander configured for the nose, especially for the nasal alar area. Similar to Embodiment 1, it also consists of an expansion sac, a septal drainage plate, a fixation element, a fluid conduit 3, and an injection vessel.
[0048] The shape of the dilator sac matches the area of the nose to be dilated. The dilator sac includes a fixing surface 101 and an expansion surface. The fixing surface 101 is the side of the dilator sac that connects to the area of the nose to be dilated, i.e., the side close to the skin, and is arc-shaped. The expansion surface is the side of the dilator sac that expands outward after being injected with fluid, i.e., the side away from the skin, and is arc-shaped. Figure 5 The expansion surface is not shown.
[0049] The difference from Example 1 is that, since there is no nasal bone support at the nasal alar, during the procedure, the liquid injected into the expansion sac is not only affected by gravity, causing it to deposit and expand downwards at the bottom of the expansion sac, but also expands inwards towards the skin, resulting in poor expansion effect. Therefore, in this example, the expansion surface is made of a single layer of medical-grade silicone rubber, with a thickness less than that of the fixing surface 101, to ensure that the expansion surface can expand outwards more easily. More preferably, to prevent the expander from expanding inwards and downwards, the thickness of the fixing surface 101 is increased; more preferably, thickened medical-grade silicone rubber is used to reduce its elastic deformation capacity and effectively constrain the expander from expanding inwards and downwards towards the skin.
[0050] Preferably, to further address the issue of downward expansion caused by the gravity of the injected liquid, two partitioned drainage plates are installed inside the expansion bladder, referred to as the first partitioned drainage plate 5 and the second partitioned drainage plate 6, respectively. The sidewalls of these partitioned drainage plates are fixedly connected to the inner wall of the expansion bladder, forming an integrated structure. This divides the internal space of the expansion bladder into three parts: upper left, upper right, and lower, resulting in one expansion section and two stabilizing sections. The expansion section corresponds to the expansion surface, and the two stabilizing sections correspond to two fixed surfaces, namely the first fixed surface and the second fixed surface. The two ends of the first partitioned drainage plate 5 are connected to the intersections of the expansion surface and the first fixed surface, and the intersection of the first fixed surface and the second fixed surface, respectively, preventing lateral pressure from the injected liquid and thus preventing inward expansion. One end of the second partitioned drainage plate 6 is connected to the first partitioned drainage plate 5, and the other end is at the intersection of the expansion surface and the second fixed surface. The intersection of the second fixed surface and the first fixed surface further prevents downward expansion due to the gravity of the injected liquid.
[0051] The septal drainage plates require internal fixation devices that allow blunt needles to pass through; therefore, the first and second septal drainage plates 6 are also made of thickened medical-grade silicone. Specifically, two drainage holes 201 are provided on the two septal drainage plates, connecting the dilation portion and the stabilizing portion. The fixation device is circumferentially mounted on the side wall of the septal drainage plate, with its end penetrating the wall of the dilation sac that connects to the septal drainage plate. Specifically, the fixation device is an arc-shaped groove; its arc-shaped end is embedded in the septal drainage plate, and its groove opening connects to the side wall of the septal drainage plate, penetrating the wall of the dilation sac that connects to the septal drainage plate. The fixation device embedded in the septal drainage plate can be used with blunt needles and medical sutures to fix the dilation sac in place in the desired area on the nasal dorsum.
[0052] Specifically, the capacity space of the expansion section is greater than or equal to twice the capacity space of the stable section, so as to ensure that the expansion surface of the expansion section can expand outwards towards the skin.
[0053] Furthermore, one end of the fluid conduit 3 is fixedly connected to the dilation bladder and communicates with its internal dilation section; the other end of the fluid conduit 3 is fixedly connected to the syringe. During implementation, liquid flows from the syringe through the fluid conduit 3 into the dilation section, and then flows through the drainage holes 201 into the two stabilizing sections. Because the walls of the stabilizing sections (first and second fixing surfaces) are made of thickened medical-grade silicone rubber, they are not easily expanded. With continued liquid injection, since the dilation surface of the dilation section is a single layer of medical-grade silicone, it expands more easily. Therefore, the dilation bladder only expands in the direction of its dilation surface, thus fulfilling the expansion requirement in that direction.
[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.
Claims
1. A directional skin expander configured for use on the nose, characterized in that, include: dilated cysts; At least one partition drainage plate, the sidewall of which is fixedly connected to the inner wall of the expansion bladder, is configured to divide the internal space of the expansion bladder to obtain an expansion section and at least one stabilizing section; A fixing member is circumferentially disposed on the side wall of the partition drainage plate, and the end of the fixing member penetrates the bladder wall of the expansion bladder that is connected to the partition drainage plate. A fluid conduit, one end of which is fixedly connected to the dilation bladder and communicates with the dilation section; An injection vessel, fixedly connected to the other end of the fluid conduit, is configured to inject liquid into the dilatation sac via the fluid conduit.
2. The directional skin expander configured on the nose according to claim 1, characterized in that, The shape of the dilator is matched to the nasal part to be dilated. The dilator includes a fixed surface and an expansion surface. The fixed surface is the side of the dilator connected to the nasal part to be dilated, and the expansion surface is the side of the dilator that expands outward after being filled with fluid. When the dilation capsule is placed on the bridge of the nose, the fixing surface is flat and the dilation surface is arc-shaped. When the expansion bladder is placed on the nasal ala, both the fixing surface and the expansion surface are arc-shaped.
3. The directional skin expander configured on the nose according to claim 2, characterized in that, When the dilation sac is placed on the bridge of the nose, a septum drainage plate is provided inside the dilation sac, and the septum drainage plate is located at the interface between the dilation surface and the fixing surface.
4. The directional skin expander configured on the nose according to claim 2, characterized in that, When the dilatation sac is placed in the nasal ala, the dilatation sac contains two partition drainage plates, namely a first partition drainage plate and a second partition drainage plate. The first partition drainage plate and the second partition drainage plate cooperate to divide the internal space of the dilatation sac into an expansion section and two stabilizing sections. The expansion section corresponds to the expansion surface, and the two stabilizing sections correspond to two fixing surfaces, namely a first fixing surface and a second fixing surface. The two ends of the first partition drainage plate are connected to the intersection of the expansion surface and the first fixing surface, and the intersection of the first fixing surface and the second fixing surface, respectively. One end of the second partition drainage plate is connected to the first partition drainage plate, and the other end of the second partition drainage plate is the intersection of the expansion surface and the second fixing surface, which is connected to the intersection of the second fixing surface and the first fixing surface.
5. The directional skin expander configured on the nose according to claim 2, characterized in that, The thickness of the expanded surface is less than the thickness of the fixed surface; The expansion surface is made of a single layer of medical silicone rubber; The fixing surface, the bladder wall of the stabilizing part, and the drainage plate of the diaphragm are all made of thickened medical silicone rubber.
6. The directional skin expander configured on the nose according to claim 1, characterized in that, The expansion bladder and the diaphragm drainage plate are an integrated structure.
7. The directional skin expander configured on the nose according to claim 1, characterized in that, The partition plate has at least two drainage holes, which connect the expansion section and the stabilizing section.
8. The directional skin expander configured on the nose according to claim 1, characterized in that, The fixing member is an arc-shaped slot, the arc-shaped end of the fixing member is built into the partition drainage plate, the slot of the fixing member is connected to the side wall of the partition drainage plate, and the slot of the fixing member penetrates the bladder wall of the expansion bladder that is connected to the partition drainage plate.
9. The directional skin expander configured on the nose according to claim 1, characterized in that, The capacity space of the expansion section is greater than or equal to twice the capacity space of the stabilizing section.