Visual glottis cover convenient to insert

Abstract

The invention relates to the technical field of glottis covers, and discloses a visual glottis cover convenient to insert, which comprises a tube body, a connecting part is arranged at the upper end of the tube body, a film-shaped cover body is arranged at the upper end of the connecting part, a sealing assembly is arranged at the upper end of the cover body, and the sealing assembly is placed at the glottis; a pair of suction channels are arranged in the side wall of the tube body in a penetrating mode, an intragastric channel is arranged in the side wall of the tube body in a penetrating mode, a control tube is arranged on the inner wall of the intragastric channel, the intragastric channel penetrates through the cover body and the sealing assembly to be placed in the esophagus, and an expansion ring is arranged on the tube wall of the intragastric channel and located above the sealing assembly. And the expansion ring is hollow and is communicated with the control pipe. According to the visual glottis cover convenient to insert, through the split type glottis cover design, the sealing assembly covers the glottis to achieve the effects of being attached to and sealing the glottis, the expansion ring penetrates into the esophagus and then is inflated through the control tube to expand in the esophagus, the effect of sealing the esophagus is achieved, meanwhile, the intragastric channel penetrating into the stomach is further arranged, and therefore the visual glottis cover convenient to insert can be conveniently inserted into the stomach. And the stomach of the anesthetized patient is exhausted and decompressed.

Description

Technical Field

[0001] The invention relates to the technical field of glottis masks, and in particular to a visualized glottis mask which is easy to insert. Background Art

[0002] The glottic mask is a medical device used for airway management, mainly used in anesthesia, emergency treatment or other scenarios that require short-term maintenance of airway patency. It is usually made of soft silicone or plastic material, can be inserted through the mouth, and forms a seal above the glottis to ensure that oxygen or anesthetic gases can enter the airway smoothly. The advantages of the glottic mask include relatively simple operation, less trauma, less airway irritation, and in some cases it can be used as an alternative to endotracheal intubation. It is widely used in ventilation management of general anesthesia, emergency resuscitation, and difficult airway management.

[0003] The patent publication number CN117919553A discloses a glottic mask catheter, comprising a mask body and a tube body connected to the mask body; the distal end of the mask body is provided with two mutually spaced convex piriform fossa mating parts and a recessed part located between the two piriform fossa mating parts; an airway is formed in the tube body and connected to the inner side of the mask body, and the passage opening of the airway faces the distal end of the mask body; in the longitudinal section of the glottic mask catheter, the portion of the mask body located at the distal end to the passage opening of the airway is an extension of the lower wall of the tube body. With the above technical solution, the glottic mask catheter of the present invention does not insert the distal end of the mask body into the gap in the posterior region of the cricoid cartilage.

[0004] The prior art has the following defects: Existing glottic masks (such as traditional laryngeal masks) still have several key defects in clinical use, mainly manifested in insufficient sealing performance and anatomical adaptability. Its standard single-balloon design is prone to leakage under high-pressure ventilation environment due to the inability to fully fit the complex laryngeal structure, especially when facing glottic anatomical variations or airway high pressure, the sealing effect is significantly reduced. The balloon usually adopts a symmetrical ring structure, which is difficult to adapt to irregular anatomical shapes such as epiglottis and arytenoid cartilages. It may cause leakage due to incomplete fit and may cause nerve compression or mucosal damage due to local over-expansion. Existing silicone or PVC balloons lack pressure adaptive characteristics and cannot be dynamically adjusted when ventilation pressure fluctuates. They may not only be insufficiently sealed at low pressure, but also cause harmful mucosal compression at high pressure. In addition, the fixed design cannot effectively respond to changes in airway pressure under patient coughing or high PEEP conditions of the ventilator, increasing the risk of ventilation failure. These structural limitations may also cause secondary clinical problems, such as the risk of aspiration or local ischemic damage caused by repeated adjustments, highlighting that existing products need to be optimized in terms of material selection, morphological design, and dynamic response mechanism. Summary of the invention

[0005] In view of the above problems in the prior art, a visual glottis mask that is easy to insert is proposed.

[0006] One aspect of the present application provides a visual glottis mask that is easy to insert, the purpose of which is to provide a glottis mask with good sealing and high adaptability.

[0007] The technical solution of the present invention is: a visualized glottis mask that is easy to insert, comprising a tube body, a connecting portion is provided at the upper end of the tube body, a thin film-like cover body is provided at the upper end of the connecting portion, a sealing assembly is provided at the upper end of the cover body, and the sealing assembly is placed at the glottis; a pair of suction channels are provided through the side wall of the tube body, an intragastric channel is provided through the side wall of the tube body, a control tube is provided on the inner wall of the intragastric channel, the intragastric channel passes through the cover body and the sealing assembly and is placed in the esophagus, an expansion ring is provided on the tube wall of the intragastric channel and above the sealing assembly, the expansion ring is hollow inside and communicated with the control tube.

[0008] By adopting the above scheme, through the split glottis cover design, the sealing component covers the glottis to fit the glottis and seal it. After the expansion ring is inserted into the esophagus, it is inflated in the esophagus through the control tube to seal the esophagus. At the same time, an intragastric channel is provided to penetrate into the stomach to exhaust and reduce the pressure on the stomach of the patient under anesthesia.

[0009] Furthermore, the sealing component is a silicone ring, and the cross-section of the silicone ring on the side away from the intragastric passage is larger than the cross-section on the side close to the intragastric passage.

[0010] By adopting the above solution, a silicone ring is provided so that the silicone ring covers the glottis, thereby sealing the glottis.

[0011] Furthermore, a camera is arranged on the inner wall of the tube body 1 near the upper end of the tube opening.

[0012] By adopting the above scheme, the image of the pharynx can be seen through the camera during intubation, and the sealing component can be smoothly delivered to the glottis.

[0013] Furthermore, a protrusion is provided on the outer wall of the upper end of the tube body, and a groove is provided on the inner wall of the connecting portion, and the protrusion is engaged in the groove.

[0014] By adopting the above scheme, the cover body and the sealing component on the connecting part can be replaced by matching the protrusion and the groove, and sealing components of different sizes can be designed according to people of different body shapes, so as to be suitable for a wider range of people.

[0015] Furthermore, a spiral groove is provided on the inner wall of the cover.

[0016] By adopting the above solution, the spiral groove is provided to guide the airflow to form laminar flow, reduce the local pressure fluctuation caused by eddy current, and reduce the risk of air leakage.

[0017] Further, the sealing assembly includes an air ring connected to the upper end of the cover body. The air ring is hollow inside, and an air nozzle for connecting a control tube is provided on the inner wall of the air ring. A plurality of air blocks are circumferentially distributed on the upper end surface of the air ring. The air blocks are hollow inside, and each air block is communicated with the inside of the air ring through a communication hole provided on the air ring.

[0018] With the above solution, by providing the air ring and the air blocks, and the communication holes are embedded in the air ring. When ventilating, the air flow enters the secondary air bags (air blocks) through the communication holes. The high-pressure air flow automatically pushes the secondary air bags (air blocks) to expand and fill the gap between the main air bag (air ring) and the glottis.

[0019] Further, a plurality of slender elastic bands are distributed on the surface of the air block, and a capillary tube communicated with the inside of the air block is provided in the elastic band.

[0020] With the above solution, by distributing a plurality of slender elastic bands on the surface of the air block, after inflation, they are radially attached to the mucosal folds of the irregular surface.

[0021] Further, covering valves are equidistantly distributed on the inner wall of the air ring. The covering valves are hollow inside and are connected to the inside of the air ring. When the control tube is not inflated, the covering valves are folded on the inner wall of the air ring. When the control tube is inflated, the covering valves straighten and cover the back of the epiglottis.

[0022] With the above solution, by providing the covering valves, a flexible membrane flap extends from the distal end of the air ring to cover the back of the epiglottis. It prevents the epiglottis from collapsing and blocking the airway during ventilation, and at the same time enhances the supra-glottic seal.

[0023] Further, a connecting band is provided between adjacent covering valves.

[0024] With the above solution, by providing the connecting band, the multiple covering valves can maintain stability when moving together.

[0025] Further, the silicone ring is hollow inside and filled with a shear thickening fluid.

[0026] With the above solution, by filling the shear thickening fluid, such as SiO 2 particle suspension, in the silicone ring, it locally hardens under high pressure, remains soft during normal ventilation, and locally hardens during coughing or high pressure to prevent deformation and air leakage.

[0027] The beneficial effects of the present invention: 1. Through the split glottis mask design, the sealing assembly covers the glottis to play a role in fitting and sealing the glottis. The expansion ring is inserted into the esophagus and inflated through the control tube to expand in the esophagus, playing a role in sealing the esophagus. At the same time, a gastric channel inserted into the stomach is also provided to exhaust and decompress the stomach of the anesthetized patient.

[0028] 2. By setting up the air ring and air chamber, the traditional single-chamber airbag is improved into a multi-chamber structure, realizing the precise sealing of the throat area. The design separates the air ring and the air block along the longitudinal axis of the trachea. The proximal air ring adopts low elasticity, which mainly plays the role of fixing the position of the device to prevent the laryngeal mask from shifting; while the distal air block is highly elastic, and its special petal design can closely fit the irregular contour of the glottis.

[0029] 3. By setting a covering valve, a flexible film flap extends from the distal end of the air ring to cover the back of the epiglottis, preventing the epiglottis from collapsing and blocking the airway during ventilation, while enhancing the supraglottic seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A stereoscopic view of a glottic mask visualized for easy insertion according to the present invention; Figure 2 For the present invention Figure 1 Sectional view at AA; Figure 3 For the present invention Figure 1 Disassembly diagram of Figure 4 For the present invention Figure 1 The top view of Figure 5 For the present invention Figure 4 Sectional view at the middle BB; Figure 6 A three-dimensional view of the sealing assembly in the glottic mask for easy insertion of the present invention; Figure 7 For the present invention Figure 6 The top view of Figure 8 For the present invention Figure 7 Sectional view at CC; Fig. 9 A three-dimensional diagram of the extended state of the covering valve in the visualization glottic mask for easy insertion of the present invention; Fig.10 A cross-sectional view showing the extended state of the covering valve in the visualization glottic mask for facilitating insertion of the present invention.

[0031] In the figure: 1. Tube body; 2. Connecting part; 3. Cover body; 4. Suction channel; 5. Intragastric channel; 6. Control tube; 7. Expansion ring; 8. Camera; 9. Protrusion; 10. Groove; 11. Spiral groove; 12. Air ring; 13. Air nozzle; 14. Air block; 15. Elastic band; 16. Cover valve; 17. Connecting band. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] Example 1, reference Figure 1-5 , which is the first embodiment of the present invention, provides a visual glottis mask that is easy to insert, including a tube body 1, a connecting portion 2 is provided at the upper end of the tube body 1, a thin film-shaped cover body 3 is provided at the upper end of the connecting portion 2, a sealing component is provided at the upper end of the cover body 3, and the sealing component is placed at the glottis; a pair of suction channels 4 are provided through the side wall of the tube body 1, an intragastric channel 5 is provided through the side wall of the tube body 1, a control tube 6 is provided on the inner wall of the intragastric channel 5, the intragastric channel 5 passes through the cover body 3 and the sealing component and is placed in the esophagus, an expansion ring 7 is provided on the tube wall of the intragastric channel 5 and above the sealing component, the expansion ring 7 is hollow inside and connected with the control tube 6.

[0034] In this embodiment, the tube body 1 and the connecting part 2 are plugged in, the film-like cover body 3 is elastic, the length of the intragastric channel 5 can be connected to the stomach, the suction channel 4, the intragastric channel 5, and the control tube 6 are fixed in the side wall of the tube body 1, and a small hole is opened on the control tube 6 to connect to the expansion ring 7. The expansion ring 7 seals the esophagus after expanding in the esophagus, and also serves to fix the sealing component.

[0035] Through the split glottis mask design, the sealing component covers the glottis to fit the glottis and seal it. After the expansion ring 7 penetrates into the esophagus, it is inflated in the esophagus through the control tube 6 to seal the esophagus. At the same time, an intragastric channel 5 is also provided to penetrate into the stomach to exhaust and reduce the pressure on the stomach of the patient under anesthesia.

[0036] Reference Figure 5 The visualization glottis mask sealing component that is easy to insert is a silicone ring, and the cross-section of the silicone ring on the side away from the intragastric passage 5 is larger than the cross-section on the side close to the intragastric passage 5.

[0037] The silicone ring is arranged to cover the glottis, thereby sealing the glottis.

[0038] In other possible embodiments, the silicone ring can also be set as a hollow structure, which can be airtight, or the expansion and contraction of the silicone ring can be controlled by a catheter, which passes through the side wall of the tube body 1 and exits from the bottom of the tube body 1. The silicone ring adopts a multi-mode design (solid, airtight hollow, hollow inflatable) to significantly improve clinical adaptability. The solid silicone ring provides rigid support to ensure precise positioning, which is suitable for standard patients with clear anatomical structure; the airtight hollow design reduces tissue pressure and the risk of mucosal damage through internal gas buffering, which is suitable for long-term surgery; the hollow inflatable structure is adjustable and achieves personalized sealing through pressure adjustment, which is particularly suitable for patients with anatomical variations or difficult airways. This modular design enables a single glottic mask to cover a wider range of clinical needs, and the optimal mode can be selected according to the specific situation of the patient during operation.

[0039] Reference Figure 3 A camera 8 is arranged on the inner wall of the tube body 1 near the upper end of the tube mouth, and a wire is connected to the camera 8. The wire passes through the tube body 1 and is connected to the display device.

[0040] Through the camera 8, the pharyngeal image can be seen during intubation, and the sealing component can be smoothly delivered to the glottis.

[0041] Furthermore, a protrusion 9 is provided on the outer wall of the upper end of the visualization glottis mask tube body 1 for easy insertion, and a groove 10 is provided on the inner wall of the connecting part 2 , and the protrusion 9 is engaged in the groove 10 .

[0042] Reference Figure 5 By matching the protrusion 9 and the groove 10, the cover body 3 and the sealing component on the connecting part 2 can be replaced, and sealing components of different sizes can be designed according to people of different body shapes, so as to be suitable for a wider range of people.

[0043] Example 2, reference Figure 1-10 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: Figure 8 The inner wall of the cover body 3 is provided with a spiral groove 11.

[0044] Intelligent guidance of ventilation airflow is achieved by machining precise spiral grooves 10 (groove depth 0.3-0.5mm, pitch 2-3mm) on the inner surface of the distal end of the airbag. When high-speed airflow passes through, a stable laminar flow will be formed along the spiral trajectory. This structure effectively breaks the random vortex generated by the inner surface of the traditional smooth mask 3, reduces the airflow turbulence by more than 60%, and significantly reduces the instantaneous air leakage caused by pressure shock. At the same time, the spiral guide design increases the axial velocity of the airflow by 15%, and a larger effective ventilation volume can be obtained under the same driving pressure.

[0045] Reference Figure 6-Figure 8 The easy-to-insert visualization glottis mask sealing assembly includes an air ring 12 connected to the upper end of the mask body 3, the air ring 12 is hollow, and the inner wall of the air ring 12 is provided with an air nozzle 13 for connecting to the control tube 6. A plurality of air blocks 14 are distributed circumferentially on the upper end surface of the air ring 12, the air blocks 14 are hollow, and each air block 14 is connected to the inside of the air ring 12 through a connecting hole provided on the air ring 12.

[0046] In this embodiment, the wall thickness of the air ring 12 is greater than that of the air block 14. By improving the traditional single-chamber airbag into a multi-chamber structure, the precise sealing of the throat area is achieved. The design separates the air ring 12 and the air block 14 along the longitudinal axis of the trachea. The proximal air ring 12 adopts low elasticity and mainly serves to fix the position of the device to prevent the laryngeal mask from shifting; while the distal air block 14 is highly elastic, and its special petal design can fit the irregular contour of the glottis tightly. The core of the petal design is that a precise network of micro airflow channels is embedded in the air ring 12. These channels with a diameter of about 0.5-1mm are radially distributed in the wall of the main air ring 12 and connected to multiple secondary "skirt" structures on the periphery of the air ring 12. When positive pressure ventilation is performed, part of the air flow will naturally divert through these micro channels, driving the expansion of the air block 14. The air block 14 will automatically inflate, unfold like a "petal" and fill the potential gap between the main air ring 12 and the glottis anatomical structure.

[0047] This zoned pressure design effectively solves the clinical dilemma brought about by the "uniform pressure of the entire airbag" of the traditional laryngeal mask: it can achieve full fit in the glottis area where high sealing pressure is required, and avoid excessive compression in the pressure-sensitive pharyngeal area, significantly reducing the risk of complications such as hypoglossal nerve injury. In vitro experiments have shown that this design can increase the effective contact area of ​​the glottis area by more than 35%, while reducing the tissue contact pressure in the pharyngeal area by 40% under the same sealing effect. This improvement in anatomical adaptability makes the device particularly suitable for anesthesia management of patients with difficult airways and long-term surgery.

[0048] Reference Figure 7 , a plurality of slender elastic bands 15 are distributed on the surface of the air block 14 for easy insertion of the visualization glottis mask, and a capillary tube connected to the air block 14 is arranged in the elastic band 15.

[0049] In this embodiment, the tentacle-like micro elastic band 15 innovatively draws on the biological adsorption mechanism of the octopus tentacles, and integrates dozens of micro elastic bands 15 with a diameter of 1-2 mm on the surface of the air block 14. These slender tentacle-like structures made of medical-grade silicone are arranged radially, and will spontaneously extend and fit the microscopic wrinkles on the surface of the laryngeal mucosa after inflation. A micro suction cup structure is designed at the end of each sealing belt, which forms a temporary adhesion with the tissue surface through van der Waals force, significantly improving the interface sealing without damaging the mucosa. This bionic design breaks through the limitation of the "surface contact" between the traditional smooth air block 14 surface and the tissue, and is transformed into a "multi-point contact" mode that is more in line with anatomical characteristics, and can adapt to the surface irregularities of the glottis area at the level of 0.1-2 mm. Experimental data show that this structure can improve the uniformity of local contact pressure distribution by 60% and reduce the leakage by 45% at a ventilation pressure of 30cmH2O. Compared with the integral gas block 14, this discrete sealing system significantly reduces the tissue pressure per unit area while ensuring airtightness.

[0050] Reference Figure 6-Figure 10 The inner wall of the air ring 12 of the visualization glottis mask for easy insertion is evenly distributed with covering valves 16, the covering valves 16 are hollow inside and communicated with the inside of the air ring 12, when the control tube 6 is not inflated, the covering valves 16 are folded on the inner wall of the air ring 12, and when the control tube 6 is inflated, the covering valves 16 are straightened and cover the back of the epiglottis.

[0051] In this embodiment, the structure integrates an ultra-thin flexible membrane flap with a thickness of less than 0.1 mm at the distal end of the air ring 12, and the covering valve 16 has a folding handle and an arc head, which is made of medical grade silicone or polyurethane material and has excellent biocompatibility and anti-fatigue properties. The folding handle is close to the cover body 3 downward in the non-inflated state, and the folding handle is radially umbrella-shaped and unfolded upward after inflation, with a diameter of about 15-20 mm. Its edge is designed with a progressive thickness gradient to ensure that it can provide sufficient support strength when covering the back of the epiglottis without causing mechanical damage to the epiglottal vallecular mucosa. When the air ring 12 is inflated and positioned, the arc head will automatically unfold with the expansion of the folding handle, gently covering the back of the epiglottis, forming a physical barrier to prevent the epiglottis from collapsing backward and blocking the airway during positive pressure ventilation. At the same time, the double-layer sealing structure formed between the membrane flap and the main body of the air ring 12 significantly improves the air tightness above the glottis, and clinical tests have shown that epiglottis-related airway leakage can be reduced by more than 70%. The surface of the flap is specially treated with micro-texture, which not only reduces the adhesion to the mucosa for easy removal after surgery, but also increases the surface friction coefficient to ensure intraoperative stability. This design is particularly suitable for patients with long or loose epiglottis. During laryngoscopy, the epiglottis can be seen to be stably maintained in the physiological position, which not only ensures ventilation efficiency, but also provides a clearer operating field for the glottis area.

[0052] Reference Figure 6-Figure 7 A connecting band 17 is provided between adjacent covering valves 16 .

[0053] By providing the connecting bands 17, the plurality of cover valves 16 can be kept stable when moving together, and the cover valves 16 can be kept in a stable state in the folded state and the extended state.

[0054] The silicone ring is hollow and filled with a shear thickening fluid. 2 The particle suspension partially hardens under high pressure, remains soft during normal ventilation, and partially hardens during coughing or high pressure to prevent deformation and leakage.

[0055] Working principle of the present invention: When in use, hold the tube body 1, aim one end of the cover body 3 at the posterior larynx of the patient, and with the help of the camera 8, make the intragastric passage 5 enter the esophagus first, and then make the air block 14 cover the glottis, and then use an inflation device such as a syringe to inflate the control tube 6, and the expansion ring 7 is inflated and engaged in the esophagus, and the air ring 12 and the air block 14 are inflated in turn. The air block 14 covers the glottis to improve the air tightness on the glottis, and at the same time, the covering valve 16 is inflated and radially unfolded in an umbrella shape and flipped upward, providing support when covering the back of the epiglottis and preventing the epiglottis from collapsing and blocking the airway.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A visual glottic mask that is easy to insert, comprising a tube body (1), characterized in that: The upper end of the tube body (1) is provided with a connecting portion (2), the upper end of the connecting portion (2) is provided with a thin film-shaped cover body (3), the upper end of the cover body (3) is provided with a sealing component, and the sealing component is placed at the glottis; a pair of suction channels (4) are provided through the side wall of the tube body (1), an intragastric channel (5) is provided through the side wall of the tube body (1), a control tube (6) is provided on the inner wall of the intragastric channel (5), the intragastric channel (5) passes through the cover body (3) and the sealing component and is placed in the esophagus, and an expansion ring (7) is provided on the tube wall of the intragastric channel (5) and above the sealing component, and the expansion ring (7) is hollow inside and communicates with the control tube (6).

2. The visual glottis mask for easy insertion according to claim 1, characterized in that: The sealing component is a silicone ring, and the cross-section of the silicone ring at the side away from the intragastric passage (5) is larger than the cross-section at the side close to the intragastric passage (5).

3. The visual glottis mask for easy insertion according to claim 1, characterized in that: A camera (8) is arranged on the inner wall of the tube body (1) near the upper end of the tube opening.

4. The visual glottis mask for easy insertion according to claim 1, characterized in that: The outer wall of the upper end of the tube body (1) is provided with a protrusion (9), the inner wall of the connecting portion (2) is provided with a groove (10), and the protrusion (9) is engaged in the groove (10).

5. The visual glottis mask for easy insertion according to claim 1, characterized in that: The inner wall of the cover body (3) is provided with a spiral groove (11).

6. The visualization glottis mask for easy insertion according to claim 1, characterized in that: The sealing assembly comprises an air ring (12) connected to the upper end of the cover body (3); the air ring (12) is hollow inside; an air nozzle (13) for connecting to a control pipe (6) is arranged on the inner wall of the air ring (12); a plurality of air blocks (14) are distributed circumferentially on the upper end surface of the air ring (12); the air blocks (14) are hollow inside; and each air block (14) is connected to the inside of the air ring (12) via a connecting hole arranged on the air ring (12).

7. The visualization glottis mask for easy insertion according to claim 6, characterized in that: A plurality of slender elastic bands (15) are distributed on the surface of the gas block (14), and capillaries communicating with the gas block (14) are arranged in the elastic bands (15).

8. The visualization glottis mask for easy insertion according to claim 6, characterized in that: The inner wall of the air ring (12) is provided with covering valves (16) equidistantly distributed thereon. The covering valves (16) are hollow and communicate with the inside of the air ring (12). When the control tube (6) is not inflated, the covering valves (16) are folded on the inner wall of the air ring (12). When the control tube (6) is inflated, the covering valves (16) are straightened and cover the back of the epiglottis.

9. The visual glottis mask for easy insertion according to claim 8, characterized in that: A connecting band (17) is provided between adjacent covering valves (16).

10. The visualization glottis mask for easy insertion according to claim 2, characterized in that: The silicone ring is hollow and filled with a shear thickening fluid.

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