A directional skin expander configured to be worn on the neck
By incorporating a septal drainage plate and an isolation plate into the neck skin expander, the problem of unsatisfactory neck expansion by traditional expanders is solved, achieving precise local skin expansion and reducing patient harm.
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
- 2026-07-14
AI Technical Summary
When traditional skin expanders are used on the neck, the back and bottom of the expansion sac lack support, resulting in unsatisfactory expansion. Furthermore, the traditional expansion sac is too large, leading to over-expansion of the skin, causing additional harm to the patient, and the patient cannot choose the expansion range independently.
A directional skin expander for the neck was designed, which uses an elliptical or rectangular expansion sac. An internal septum drainage plate divides the sac into an expansion section and a stabilization section. The expansion surface is made of a single layer of medical silicone rubber, while the fixation surface is made of thickened medical silicone rubber. The fluid distribution is controlled by the septum drainage plate and the isolation plate to achieve local expansion.
It effectively prevents fluid from expanding inward and downward, achieving precise expansion of the local skin, reducing patient harm, and meeting the needs of small-area expansion.
Smart Images
Figure CN224484174U_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 use on the neck. 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 on the head, neck, face, chest, trunk, and limbs. However, for the neck region, using traditional expander balloons results in the balloon lacking support at the back and bottom, causing it to sink inwards and expand towards the bottom front, leading to less than ideal expansion of the skin towards the target area. Furthermore, expanders placed on the neck are often large, but sometimes only a small portion of the neck skin needs expansion. Therefore, using traditional expander balloons can lead to excessive expansion of the neck skin, causing additional harm to the patient. Thus, there is an urgent need for an expander that allows the operator to independently select the expansion range. Utility Model Content
[0004] The technical objective of this invention is to provide a directional skin expander configured for use on the neck, in order to solve the problems of poor expansion effect and mismatch between the expander and the skin to be expanded.
[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 neck, comprising:
[0007] dilated cysts;
[0008] Two partition drainage plates, the sidewalls of which are fixedly connected to the inner wall of the expansion sac, are configured to divide the internal space of the expansion sac to obtain an expansion section and two stabilizing sections.
[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 dilator is elliptical or rectangular in shape and includes a fixed surface and a dilator surface. The fixed surface is the side of the dilator surface that connects to the neck area to be dilated, and the dilator surface is the side of the dilator surface that expands outward after fluid is injected. Both the fixed surface and the dilator surface are arc-shaped.
[0013] Specifically, the expansion sac is equipped with two partitioned drainage plates, including a first partitioned drainage plate and a second partitioned drainage plate. The first partitioned drainage plate and the second partitioned drainage plate cooperate with each other to divide the internal space of the expansion 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 the first fixing surface and the second fixing surface. The two ends of the first partitioned drainage plate are respectively 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. The two ends of the second partitioned drainage plate are respectively connected to the intersection of the expansion surface and the second fixing surface and the intersection of the second fixing surface and the first fixing surface.
[0014] The thickness of the expanded surface is less than the thickness of the fixed surface;
[0015] The expansion surface is made of a single layer of medical-grade silicone rubber;
[0016] The sac wall and septal drainage plate of the fixation surface and stabilization section are all made of thickened medical silicone rubber.
[0017] More preferably, the expansion bladder is further provided with a partition plate, the two ends of which are connected to the expansion surface and the first partition drainage plate and the second partition drainage plate, respectively, dividing the expansion part into a first expansion part and a second expansion part. The first expansion part and the second expansion part are respectively fixedly connected to two different fluid conduits.
[0018] The expansion bladder and the diaphragm drainage plate are integrated into one structure. At least two drainage holes are opened on the diaphragm drainage plate, which connect the expansion part and the stabilizing part.
[0019] Specifically, the fixing element is an arc-shaped slot, with the arc-shaped end of the fixing element embedded in the partition drainage plate. The slot of the fixing element is connected to the side wall of the partition drainage plate, and the slot of the fixing element penetrates the bladder wall on the expansion bladder that is connected to the partition drainage plate.
[0020] The capacity space of the expansion section is greater than or equal to twice the capacity space of the stable section.
[0021] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:
[0022] This utility model provides a directional skin expander configured for the neck. The expander sac is provided with a septum drainage plate, which divides the interior into an expansion section and a stabilizing section. This ensures that after liquid is injected, the liquid is mainly located in the expansion section. This prevents the liquid from expanding only the lower half of the expander sac (stabilizing section) under the action of gravity, and also prevents the liquid from expanding inward due to the lack of support in the neck.
[0023] 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.
[0024] In this invention, the interior of the expansion section is divided by setting an isolation plate in the expansion bladder and connecting different fluid conduits. Through the above arrangement, the expansion bladder of the expander can be partially expanded, thereby dealing with small-scale expansion of the neck. Attached Figure Description
[0025] 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.
[0026] Figure 1 This is a front view of a directional skin expander configured for the neck according to the present invention;
[0027] Figure 2 This is a front view of a directional skin expander configured for use on the neck according to the present invention.
[0028] Explanation of reference numerals in the attached figures
[0029] 1: Dilatation bladder; 101: Fixation surface; 102: Dilatation surface; 2: First diaphragm drainage plate; 3: Second diaphragm drainage plate; 4: Isolation plate; 5: Fluid conduit. Detailed Implementation
[0030] 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.
[0031] 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."
[0032] The present invention provides a directional skin expander configured for the neck, which is described in further 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.
[0033] Example
[0034] This embodiment provides a directional skin expander configured for the neck, which includes: an expansion sac 1, a septal drainage plate, a fixation element, a fluid conduit 5, and an injection vessel.
[0035] The expansion bladder 1 is elliptical or rectangular in shape. The expansion bladder 1 includes a fixed surface 101 and an expansion surface 102. The fixed surface 101 is the side of the expansion bladder 1 that connects to the neck area to be expanded, i.e., the side close to the skin, and is arc-shaped. The expansion surface 102 is the side of the expansion bladder 1 that expands outward after being injected with fluid, i.e., the side away from the skin, and is arc-shaped.
[0036] Existing expanders are mostly hollow structures. During implementation, the liquid injected into the expansion sac 1 is affected by gravity, depositing at the bottom of the sac and expanding downwards. Furthermore, the neck is relatively soft and cannot provide reliable support, causing the expansion sac 1 to expand inwards under the influence of the liquid, resulting in poor expansion 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. More preferably, thickened medical-grade silicone rubber is used to reduce its elastic deformation capacity, effectively restraining the expander from expanding inwards and downwards into the skin.
[0037] 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 1, referred to as the first partitioned drainage plate 2 and the second partitioned drainage plate 3, respectively. The sidewalls of both the first partitioned drainage plate 2 and the second partitioned drainage plate 3 are fixedly connected to the inner wall of the expansion bladder 1, forming an integrated structure. Viewed from the side, the internal space of the expansion bladder 1 is divided into two parts: an upper left, an upper right, and a lower part, resulting in one expansion section and two stabilizing sections. The expansion section corresponds to the expansion surface 102, and the two stabilizing sections correspond to two fixed surfaces 101, namely the first fixed surface 101 and the second fixed surface 101. The two ends of the first partitioned drainage plate 2 are connected to the intersection points of the expansion surface 102 and the first fixed surface 101, and the intersection point of the first fixed surface 101 and the second fixed surface 101, respectively, thereby buffering the injected liquid and reducing the impact of liquid gravity on the expansion of the expansion bladder 1. The two ends of the second partition drainage plate 3 are connected to the intersection of the expansion surface 102 and the second fixed surface 101, and the intersection of the second fixed surface 101 and the first fixed surface 101, respectively. Its function is to prevent the injected liquid from exerting pressure on the second fixed surface 101 and causing it to expand inward.
[0038] The septal drainage plate requires an internal fixation component that allows a blunt needle to pass through; therefore, the septal drainage plate is also made of thickened medical-grade silicone. Specifically, at least two drainage holes are formed on the septal drainage plate, connecting the dilation section and the stabilization section. The fixation component is circumferentially mounted on the side wall of the septal drainage plate, with its end penetrating the wall of the dilation sac 1 that connects to the septal drainage plate. Specifically, the fixation component is an arc-shaped slot, with its arc-shaped end embedded in the septal drainage plate, and its slot opening connecting to the side wall of the septal drainage plate and penetrating the wall of the dilation sac 1 that connects to the septal drainage plate. The fixation component embedded in the septal drainage plate can be used with a blunt needle and medical suture to fix the dilation sac 1 in place in the area to be positioned on the back of the neck.
[0039] Furthermore, the expansion bladder 1 is also equipped with a partition plate 4. The two ends of the partition plate 4 are connected to the expansion surface 102 and the first and second partition drainage plates 3, respectively, dividing the expansion section into a first expansion section and a second expansion section. The first and second expansion sections are fixedly connected to two different liquid conduits 5, or the internal liquid inlets can be switched by a switching switch, making the liquid inlet control of the two expansion sections independent. That is, when the area to be expanded is smaller than the expansion bladder 1, liquid can be injected into one of the expansion sections as needed, or different amounts of liquid can be injected into the two expansion sections, so that the expansion bladder 1 does not need to expand as a whole, thereby solving the problem of over-expansion of the expansion bladder 1.
[0040] Specifically, the overall capacity of the expansion section is greater than or equal to twice the capacity of the stabilizing section to ensure that the expansion surface of the expansion section can expand better towards the outer side of the skin. Two fluid conduits 5 are provided, one end of which is fixedly connected to the expansion bladder 1 and communicates with the first and second expansion sections inside it, respectively; the other end of the fluid conduits 5 is fixedly connected to the injection vessel. During implementation, liquid flows from the injection vessel into the expansion section through the fluid conduits 5, and then flows through the drainage hole into the stabilizing section. Because the bladder wall of the stabilizing section (the lower fixing surface 101) is made of thickened medical-grade silicone rubber, it is not easily expanded; the other fixing surfaces 101 (the side connected to the skin) are also made of thickened medical-grade silicone rubber and are supported by the first diaphragm drainage plate 2, thus also not easily expanded. With continued injection of liquid, since the expansion surface 102 of the expansion section is a single layer of medical-grade silicone, it expands more easily. Therefore, the expansion bladder 1 only expands in the direction of the specific expansion surface 102, thereby fulfilling the expansion requirement in that direction.
[0041] 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 neck, characterized in that, include: dilated cysts; Two partition drainage plates are provided, with the sidewalls of both partition drainage plates fixedly connected to the inner wall of the expansion bladder, configured to divide the internal space of the expansion bladder to obtain an expansion section and two stabilizing sections. 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 neck according to claim 1, characterized in that, The expansion sac is elliptical or rectangular in shape. The expansion sac includes a fixed surface and an expansion surface. The fixed surface is the side of the expansion sac that connects to the neck area to be expanded. The expansion surface is the side of the expansion sac that expands outward after being injected with fluid. Both the fixed surface and the expansion surface are arc-shaped.
3. The directional skin expander configured on the neck according to claim 2, characterized in that, The expansion bladder contains two partitioned drainage plates, including a first partitioned drainage plate and a second partitioned drainage plate. The first partitioned drainage plate and the second partitioned drainage plate cooperate to divide the internal space of the expansion bladder 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 partitioned drainage plate are respectively 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. The two ends of the second partitioned drainage plate are respectively connected to the intersection of the expansion surface and the second fixing surface and the intersection of the second fixing surface and the first fixing surface.
4. The directional skin expander configured on the neck 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.
5. The directional skin expander configured on the neck according to claim 3, characterized in that, The expansion bladder is also provided with a partition plate. The two ends of the partition plate are respectively connected to the expansion surface, the first partition drainage plate, and the second partition drainage plate, dividing the expansion part into a first expansion part and a second expansion part. The first expansion part and the second expansion part are respectively fixedly connected to two different fluid conduits.
6. The directional skin expander disposed on the neck according to claim 1, characterized in that, The expansion bladder and the diaphragm drainage plate are an integrated structure. At least two drainage holes are provided on the diaphragm drainage plate, and the drainage holes connect the expansion part and the stabilizing part.
7. The directional skin expander disposed on the neck 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.
8. The directional skin expander disposed on the neck 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.