CN217040855U - Jaw pad capable of being used for draining jaw cyst - Google Patents

Abstract

The utility model provides a jaw pad which can be used for draining jaw cyst. The jaw pad provided by the utility model can be used for drainage of jaw cyst, the jaw pad is provided with an opening, and the opening is opposite to the window opening arranged on the wall of the jaw cyst; the first drainage tube and the second drainage tube penetrate through the opening and are bonded with the inner wall of the opening, so that the drainage tubes can be relatively fixed on the jaw pad, and the inner ends of the first drainage tube and the second drainage tube extend into the jaw cyst. By the arrangement, the drainage of cyst fluid of the jaw cyst is realized, and the jaw pad is sleeved on the dental row of the patient, so that the drainage tube is fixed relative to the jaw cyst, a metal fixing structure is not required to be additionally arranged, the dental row of the patient is not required to be adjusted, no damage is caused to adjacent bone tissues, the structure is simple, and the cost is low; and the jaw pad manufacturing and drainage tube bonding operation are simple, the manufacturing is convenient, and the consumed time is short. Moreover, the jaw pad is comfortable to wear and convenient to use, and does not influence the aesthetic property and the occlusal property.

Description

Jaw pad capable of being used for draining jaw cyst

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a jaw pad that can be used for carrying out the drainage to jaw cyst.

Background

Jaw cystic changes are common and frequently encountered diseases of the oral jaw and face. Jaw cystic lesion is saccular tumor containing secretion in jaw, and early stage of lesion has no obvious clinical symptoms; the later secretion is gradually increased, the pathological changes are gradually increased, the jaw bone is expanded and destroyed and is pressed to absorb, and the patient can see a doctor when symptoms such as jaw bone swelling, tooth looseness, pain, occlusion disorder, facial deformity and the like appear. For large cysts, fenestration reduced pressure drainage surgery is usually used for treatment. Specifically, a window is opened on the cyst to open the cyst wall, so that liquid in the cyst flows out, the pressure inside and outside the cyst is balanced, and meanwhile, the normal saline washes the cyst cavity every day, the jaw bone tissue slowly regenerates, the cyst gradually shrinks, the jaw bone appearance is recovered, and the shape and the function of the jaw bone are protected to the maximum extent; meanwhile, part of the capsule wall tissues are cut, and are sent to pathological examination for definite diagnosis, thereby providing basis for the treatment of windowing drainage.

The existing jawbone cyst windowing decompression drainage treatment generally adopts metal clamps to clamp adjacent teeth for fixation and false tooth base materials to manufacture a cyst drainage device, thereby preventing foreign matters from entering a cyst cavity. However, when the metal snap ring clamps adjacent teeth for retention, the adjacent teeth need to be milled, and irreversible damage is caused to the adjacent teeth; and the structure is complicated, the manufacture is complicated, and the time consumption is long.

Therefore, there is a need for a simple drainage device for jaw cyst that does not damage adjacent teeth.

SUMMERY OF THE UTILITY MODEL

The utility model provides a jaw pad that can be used for carrying out the drainage to jaw cyst to solve current cyst drainage ware and need transfer the mill adjacent tooth and carry out the maintenance, the complicated, the loaded down with trivial details technical problem of preparation of structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a jaw pad which can be used for draining jaw cyst, and the jaw pad is provided with an opening; two drainage tubes pass through the opening and are adhered to the inner wall of the opening, and the inner ends of the drainage tubes extend into the jaw cyst.

Compared with the prior art, the utility model provides a jaw pad that can be used for carrying out the drainage to jaw cyst has following advantage:

the jaw pad provided by the utility model can be used for drainage of jaw cyst, the jaw pad is provided with an opening, and the opening is opposite to the window opening arranged on the wall of the jaw cyst; the first drainage tube and the second drainage tube penetrate through the opening and are bonded with the inner wall of the opening, so that the drainage tubes can be relatively fixed on the jaw pad, and the inner ends of the first drainage tube and the second drainage tube extend into the jaw cyst. By the arrangement, the drainage of cyst fluid of the jaw cyst is realized, and the jaw pad is sleeved on the dental row of the patient, so that the drainage tube is fixed relative to the jaw cyst, a metal fixing structure is not required to be additionally arranged, the dental row of the patient is not required to be adjusted, no damage is caused to adjacent bone tissues, the structure is simple, and the cost is low; and the jaw pad manufacturing and drainage tube bonding operation are simple, the manufacturing is convenient, and the consumed time is short. Moreover, the jaw pad is comfortable to wear and convenient to use, and does not influence the aesthetic property and the occlusal property.

As an improvement of the jaw pad of the utility model, the drainage tube is bonded on the inner wall of the opening through a base made of thermoplastic material.

Through the setting, the drainage tube passes through the base and holds in the palm to be fixed on the jaw pad, and jaw pad cover is established on the tooth is listed, so, and jaw cyst is windowed and is in open state, and the cyst liquid that produces in the cyst chamber can be in time, continuously through the drainage tube discharge, avoids cyst liquid to produce pressure, jaw oppression absorption to jaw tissue. The pressure of cyst fluid on the jaw bone is relieved, so that the jaw bone tissue can gradually recover the shape and the internal structure. And the teeth of the patient are not grinded, so that the integrity of jaw, teeth and dentition is kept, the appearance of the patient is attractive, the wearing is comfortable, and the chewing function is protected and recovered to the maximum extent.

As an improvement of the above jaw pad of the present invention, the inner side of the base is provided with an edge of an extension portion of the opening side wall extending inward, the extension portion being used for contacting with the side wall of the capsule wall opening.

The base support penetrates through the opening in the jaw pad and extends into the fenestration in the jaw cyst wall, so that an extension part is formed, the extension part can keep the cyst cavity open, and the fenestration is prevented from being healed too early; can avoid exogenous infection, is comfortable to wear, and does not influence daily life such as language, food intake and the like.

As an improvement of the above jaw pad of the present invention, the outside of the base is covered with the opening, and the edge of the base is beyond the edge of the opening by 3 to 5 mm.

So set up, the opening part is not only filled to the foundation support, still extends the surface bonding that surpasss opening and jaw pad, can be so that foundation support and jaw pad have sufficient bonding area, improve the stability and the reliability that foundation support and jaw pad bonded to improve the fixed reliability of drainage tube, avoid foundation support and jaw pad to bond unstably and lead to the drainage tube ectopic.

As an improvement of the jaw pad of the utility model, the thickness of the base is 2-3 mm.

By the arrangement, the phenomenon that the thickness of the base is too small to influence the retention of the drainage tube can be avoided, and the phenomenon that the thickness of the base is too large to cause occlusion and aesthetic property of a patient can be avoided.

As an improvement of the above jaw pad of the utility model, the open-ended lateral wall with the interval between the lateral wall of drainage tube is 2 ~ 3 mm.

By the arrangement, the peripheral side walls of the drainage tube can be bonded to the jaw pad, the stability of fixing the drainage tube is improved, the convenience of bonding operation of the drainage tube can be improved, and a space is provided for the extension part formed by extending the base support into the window opening; the problems of inconvenient retention and unstable connection of the drainage tube caused by small space size between the drainage tube and the side wall of the opening are avoided.

As an improvement of the jaw pad of the utility model, two the interval between the drainage tubes is 2-3 mm.

So set up the installation that not only makes things convenient for first drainage tube and second drainage tube, can also reserve bonding space with the base stock, improve the stability and the reliability of the maintenance of drainage tube.

As an improvement of the jaw pad of the utility model, two the length of the drainage tube is different, so the arrangement makes the first drainage tube and the second drainage tube form a height difference, and the drainage speed is improved. The longer of the two drainage tubes extends towards the floor of the jaw cyst for draining irrigation fluid; so set up, can make the washing liquid fully discharge. Two shorter orientation in the drainage tube jaw cyst's lateral wall extends for let in the flush fluid, so set up and to wash the cystic secretion on the lateral wall, improve the cleanliness factor that washes, improve cyst healing speed.

As an improvement of the jaw pad of the utility model, two the length difference between the drainage tubes is 5-10 mm.

The arrangement can avoid the situation that the length difference of the two drainage tubes is too small to fully wash the sac cavity and also avoid the situation that the length difference of the drainage tubes is too large to cause pain caused by the contact of the drainage tubes and the sac wall.

As an improvement of the jaw pad of the utility model, the outer diameter range of the drainage tube is 2-4 mm.

The arrangement can avoid the influence on the drainage effect caused by the over-small outer diameter of the drainage tube; the overlarge outer diameter of the drainage tube can be avoided, so that the window opening is overlarge. The skilled person can set the outer diameter of the drainage tube according to the actual situation.

As an improvement of the above jaw pad of the utility model, the outer end of the drainage tube is bonded with a connector, the connector is used for being connected with the pipeline of the flushing device.

So set up the pipe connection who makes things convenient for drainage tube and flushing device, so the patient can wash convenient to use by oneself.

In addition to the technical problems, technical features constituting technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical problems that the jaw pad of the present invention can solve, other technical features included in the technical solutions and the advantages brought by the technical features of the present invention will be described in further detail in the following detailed description.

Drawings

In order to illustrate more clearly the embodiments of the invention or the technical solutions in the prior art, the drawings which are needed in the description of the embodiments of the invention or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the invention, and the drawings and the description are not intended to limit the scope of the disclosed concept in any way, but to illustrate the disclosed concept for a person skilled in the art by referring to a specific embodiment, and for a person skilled in the art, other drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a structural schematic view of a jaw pad in one direction according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another direction of the jaw pad provided by the embodiment of the present invention;

fig. 3 is a schematic view of the jaw pad according to the embodiment of the present invention in use.

Description of the reference numerals:

1: jaw cushions;

2: a first draft tube;

3: a second draft tube;

4: a base support;

41: an extension portion;

5: a jaw cyst.

Detailed Description

There are three treatment modalities for cystic lesions of the jaw bone: cyst scraping operation, jaw bone resection operation and windowing decompression drainage operation. Wherein, the cyst scraping operation is applicable to the maxillofacial cyst with smaller lesion range. The jaw bone resection operation destroys the appearance and the chewing function of the face of a patient, and although the jaw bone resection operation can be repaired by autologous bone grafting or a titanium metal bracket, the operation with large wound, the deformity of the face after the operation, the functional destruction, the reduction of the quality of life and the huge medical expense generate huge wound and shadow for the physiology and the psychology of the patient. The windowing decompression drainage operation is usually used for treating large jaw cyst, not only the operation method is simplified, the safety is high, the wound is small, but also the self new bone generation can be promoted, the integrity of jaw is recovered, the incision of the gum in the mouth is windowed, no scar is left on the face, correspondingly, the treatment cost is greatly reduced, the principle of functional surgery, cosmetic surgery and minimally invasive surgery is met, and the method is a safe, effective, feasible and significant treatment method.

The existing jawbone cyst windowing decompression drainage treatment is usually to adopt metal clamps to clamp adjacent teeth for retention and false tooth base material to manufacture a cyst drainage device so as to prevent food from entering a cyst cavity to cause infection. However, when the metal snap ring clamps adjacent teeth for fixing, the adjacent teeth need to be milled, and the adjacent teeth are irreversibly damaged; the manufacturing procedure is complicated, the processing steps are complex, and the consumed time is long; hard texture, difficult wearing and taking and easy scratching of soft tissues around the fenestration; the wearing and the adjustment are difficult and time-consuming; uncomfortable wearing and even affecting the dietary speech.

In view of this, the embodiment of the present invention provides a jaw pad for draining a jaw cyst, the jaw pad is sleeved on a patient's teeth column, and an opening is provided at a position of the jaw pad corresponding to the cyst windowing opening, two drainage tubes pass through the opening and are bonded on the jaw pad through a denture base, the inner ends of the drainage tubes extend into the cyst, so that the drainage tubes are fixed on the jaw pad, the drainage tubes are retained, and the fixation is stable and reliable; need not additionally to set up metal fixed knot and construct, and need not to adjust patient's dentition, simple structure, preparation convenience, weak point consuming time, it is with low costs.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Fig. 1 is a schematic structural view of a jaw pad in one direction, fig. 2 is a schematic structural view of the jaw pad in another direction, and fig. 3 is a schematic structural view of the jaw pad in use.

With reference to fig. 1 to 3, an embodiment of the present invention provides a jaw pad capable of draining a jaw cyst, wherein the jaw pad 1 is provided with an opening; two drainage tubes pass through the opening and are adhered to the inner wall of the opening, and the inner ends of the drainage tubes extend into the jaw cyst 5.

The jaw pad 1 is fitted over the dentition of a patient and may be made of thermoplastic polymers such as acrylonitrile-butadiene-styrene copolymer, polycarbonate and epoxy acrylate, unsaturated polyester, urethane acrylate, etc., or photosensitive polymers such as silica gel, silicone, etc., without limitation. Optionally, jaw pad 1 adopts transparent material to make, that is to say, jaw pad 1 is transparent jaw pad, improves the aesthetic property, the travelling comfort of wearing.

A window is opened in the jaw cyst wall to open the cyst wall. The jaw pad 1 is provided with an opening opposite to the fenestration on the sac wall, and the jaw pad 1 is provided with an opening for facilitating the installation of the drainage tube. The opening on the jaw pad 1 may be circular, rectangular, irregular, etc., and those skilled in the art can set the shape of the opening according to actual conditions.

For convenience of description, the two drains are defined as a first drain 2 and a second drain 3, respectively. First drainage tube 2 and second drainage tube 3 can be the soft pipe, avoid the drainage tube to arouse the painful sense of patient with 5 lateral walls of jaw cyst hard contacts. Optionally, the first drainage tube 2 and the second drainage tube 3 can both adopt sterile hoses commonly used in clinic, so that inflammation inside the cyst caused by foreign matters is avoided.

The first drainage tube 2 and the second drainage tube 3 pass through the opening and are bonded with the inner wall of the opening, so that the drainage tubes are fixedly connected with the jaw pad 1. The drainage tube can be adhered to the inner wall of the opening in various ways, for example, the drainage tube is adhered to the inner wall of the opening by adhesive glue. The inner of drainage tube stretches into jaw cyst 5 in, draws out the cyst liquid in jaw cyst 5.

It can be understood that, when discharging cyst fluid, the first drainage tube 2 and the second drainage tube 3 can both discharge cyst fluid outwards, and accelerate the discharge of cyst fluid; when the washing is performed, one of the first and second drainage tubes 2 and 3 discharges washing liquid inwards, and the other of the first and second drainage tubes 2 and 3 discharges washing liquid outwards, so that the washing efficiency is improved.

The diameters of the first draft tube 2 and the second draft tube 3 can be the same or different; the lengths of the first drain tube 2 and the second drain tube 3 may be the same or different, and those skilled in the art can set them according to the actual condition of the patient.

The drainage tube of this embodiment can play and block the effect of windowing position soft tissue healing, avoids food waste to fall into the bag chamber in the feed process simultaneously. Because the soft drainage tube is the part extending into the sac cavity, along with the formation of new bones and the gradual reduction of the sac cavity, a patient can automatically trim the length and the shape of the part extending into the sac cavity, does not need clinical adjustment and grinding, and is convenient to use.

Therefore, the jaw pad provided by the embodiment of the utility model can be used for draining the jaw cyst 5, specifically, the jaw pad 1 is provided with an opening which is opposite to the window opening arranged on the wall of the jaw cyst 5; the first drainage tube 2 and the second drainage tube 3 pass through the opening and are adhered to the inner wall of the opening, so that the drainage tubes can be relatively fixed on the jaw pad 1, and the inner ends of the first drainage tube 2 and the second drainage tube 3 extend into the jaw cyst 5. The drainage of cyst liquid of the jaw cyst 5 is realized by the arrangement, the jaw pad 1 is sleeved on the dental row of the patient, so that the drainage tube is fixed relative to the jaw cyst 5, a metal fixing structure is not required to be additionally arranged, the dental row of the patient is not required to be adjusted, the adjacent bone tissue is not damaged, the structure is simple, and the cost is low; and the preparation of the jaw pad 1 and the bonding operation of the drainage tube are simple, the preparation is convenient, and the consumed time is short. Moreover, the jaw pad 1 is comfortable to wear and convenient to use, and does not affect the aesthetic property and the occlusal property.

In a possible realisation, the drain tube is glued to the inner wall of the opening by means of a base 4 made of thermoplastic material. Specifically, the first drainage tube 2 and the second drainage tube 3 are made into a base 4 by using denture powder, so that the first drainage tube 2 and the second drainage tube 3 are both bonded with the jaw pad 1. Wherein, the base 4 is made of common dental materials, the making steps are mature, the operation of dentists is simple and convenient, the operation is simplified, and the cost is reduced. And, the base 4 is made of thermoplastic material, and is closely attached to soft and hard tissues around the oral cavity, so that tenderness is avoided, and the wearing comfort is improved.

A specific method of manufacturing the jaw pad according to the embodiment of the present invention will be described.

The natural teeth in the oral cavity of the patient do not need to be milled and keep complete. And (3) pouring a gypsum model by using an alginate printing film material to obtain a female die of the corresponding dentition and the windowing. The inverted recess at the fenestration of the plaster model is filled, and a jaw pad 1 which is highly matched with the natural dentition and covers the fenestration area is manufactured. The jaw pad 1 is trimmed, and an opening is formed at the corresponding position of the fenestration, and the opening needs to be larger than the diameter of the drainage tube, so that the drainage tube is convenient to fix.

Then, the drainage tube is adhered to the jaw pad 1 by using the base 4. The base 4 may be a thermosetting denture base.

Through the setting, the drainage tube passes through the base and holds in the palm 4 to be fixed on jaw pad 1, and jaw pad 1 cover is established on the tooth is listed, so, jaw cyst 5 is windowed and is in open state, and the cyst liquid that produces in the cyst chamber can be in time, continuously through the drainage tube discharge, avoids cyst liquid to produce pressure, jaw oppression to jaw tissue and absorbs. The cyst fluid relieves the pressure on the jaw bone, so that the jaw bone tissue can gradually recover the appearance and the internal structure. And the teeth of the patient are not grinded, so that the integrity of jaw, teeth and dentition is kept, the appearance of the patient is attractive, the wearing is comfortable, and the chewing function is protected and recovered to the maximum extent.

In a possible implementation, referring to fig. 3, the inside of the base 4 is provided with an extension 41 extending inwards along the side wall of the opening, the extension 41 being intended to be in contact with the side wall of the opening. That is to say, the base 4 passes through the opening on the jaw pad 1 and extends into the fenestration on the wall of the jaw cyst 5, so as to form an extension part 41, and the extension part 41 can keep the cyst cavity open and avoid the premature healing of the fenestration; can avoid exogenous infection, is comfortable to wear, and does not influence daily life such as language, food intake and the like. The extension length of the extension 41 can be set by those skilled in the art according to the actual condition of the patient, and is not limited herein.

With continued reference to FIG. 3, in one particular implementation, the outer side of the base 4 covers the opening and the edge of the base 4 exceeds the edge of the opening by 3-5 mm, as shown in FIG. 3, the portion L1 of the edge of the base 4 exceeding the edge of the opening is 3-5 mm. Base support 4 not only fills the opening part, still extends to exceed the opening and bonds in jaw pad 1's surface, so sets up, can be so that base support 4 has sufficient bonding area with jaw pad 1, improves the stability and the reliability that base support 4 and jaw pad 1 bonded to improve the fixed reliability of drainage tube, avoid base support 4 and jaw pad 1 to bond unstably and lead to the drainage tube ectopic.

Optionally, the thickness of the base 4 is 2-3 mm, so that the positioning of the drainage tube can be prevented from being influenced by the too small thickness of the base 4, and the occlusion and the attractiveness of a patient due to the too large thickness of the base 4 can be avoided.

In one possible embodiment, the spacing L2 between the side wall of the opening and the side wall of the draft tube is 2-3 mm. By the arrangement, the peripheral side walls of the drainage tube can be adhered to the jaw pad 1, the fixing stability of the drainage tube is improved, the convenience of the adhesion operation of the drainage tube can be improved, and a space is provided for the extension part 41 formed by the base 4 extending towards the opening window; the problems of inconvenient retention and unstable connection of the drainage tube caused by the small size of the interval L2 between the drainage tube and the side wall of the opening are avoided.

Optionally, the interval between two drainage tubes is 2 ~ 3 mm. Combine fig. 3, interval L3 between first drainage tube 2 and the second drainage tube 3 is 2 ~ 3mm, so set up not only make things convenient for the installation of first drainage tube 2 and second drainage tube 3, can also reserve bonding space with the base support 4, improve the stability and the reliability of the maintenance of drainage tube.

In a possible embodiment, the lengths of the two drains are different, i.e. the lengths of the first drain 2 and the second drain 3 are different. The arrangement makes the first drainage tube 2 and the second drainage tube 3 form a height difference, and the drainage speed is improved. And, a longer one of the two drainage tubes, such as the first drainage tube 2 shown in fig. 3, extends toward the fundus wall of the jaw cyst 5 for discharging the washing liquid; so set up, can make the flush fluid fully discharge. The shorter of the two drainage tubes, such as the second drainage tube 3 shown in fig. 3, extends towards the side wall of the jaw cyst 5 for the passage of flushing fluid, so arranged that cystic secretions on the side wall can be flushed, improving the cleanliness of the flushing, improving the cyst healing speed.

Optionally, the length difference between the first drainage tube 2 and the second drainage tube 3 is 5-10 mm, so the arrangement can avoid the situation that the length difference of the two drainage tubes is too small to fully wash the sac cavity, and can also avoid the situation that the length difference of the drainage tubes is too large to cause pain due to the contact of the drainage tubes and the sac wall.

Optionally, the outer diameters of the first drainage tube 2 and the second drainage tube 3 are in the range of 2-4 mm, so that the influence of the over-small outer diameter of the drainage tube on the drainage effect can be avoided; the overlarge outer diameter of the drainage tube can be avoided, so that the window opening is overlarge. The skilled person can set the outer diameter of the drainage tube according to the actual situation.

In order to improve the convenience of drainage operation, the outer end of the drainage tube is bonded with a connector, and the connector is used for being connected with a pipeline of a flushing device. Wherein, the connector can be with drainage tube integrated into one piece, connect stably, need not clinical operation and connect, save clinical operating time. The connector can be threaded connection head, buckle connector etc. so set up the pipe connection who makes things convenient for drainage tube and flushing device, so the patient can wash convenient to use by oneself.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (10)

1. A maxillo-pad usable for draining a cyst of a jaw, wherein the maxillo-pad is provided with an opening;

two drainage tubes pass through the opening and are adhered to the inner wall of the opening, and the inner ends of the drainage tubes extend into the jaw cyst.

2. The jaw pad of claim 1 wherein said drain tube is bonded to an inner wall of said opening by a base of thermoplastic material.

3. The maxilla pad of claim 2, wherein the base is provided on an inner side thereof with an extension extending inwardly along the side wall of the opening, the extension for contacting the side wall of the capsule wall fenestration.

4. The maxilla pad of claim 2, wherein the outer side of the base covers the opening and the edge of the base extends 3-5 mm beyond the edge of the opening.

5. The jaw pad of claim 2 wherein said base is 2-3 mm thick.

6. The jaw pad of any one of claims 1 to 5, wherein the spacing between the side walls of the opening and the side walls of the drain tube is 2 to 3 mm.

7. The jaw pad of any one of claims 1 to 5, wherein the two drainage tubes are spaced apart by 2 to 3 mm.

8. The jaw pad as claimed in any one of claims 1 to 5 wherein the two drainage tubes are of different lengths, the longer of the two tubes extending towards the floor of the jaw cyst for drainage of irrigant fluid; two the shorter one in the drainage tube extends towards the lateral wall of jaw cyst for let in the flush fluid.

9. The jaw pad according to any one of claims 1 to 5, wherein the difference in length between the two drainage tubes is 5 to 10 mm;

and/or the outer diameter range of the drainage tube is 2-4 mm.

10. The jaw pad as claimed in any one of claims 1 to 5, wherein a connector is bonded to the outer end of the drainage tube, and the connector is used for connecting with a pipeline of a flushing device.

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