CN218979271U

CN218979271U - Bone meal layout device for lifting mucosa of maxillary sinus

Info

Publication number: CN218979271U
Application number: CN202320180646.7U
Authority: CN
Inventors: 朱震坤; 闫勇敢; 周芹
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-05-09
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a bone meal layout device for lifting mucosa of a maxillary sinus, which relates to the technical field of medical appliances and solves the problems that in the prior art, mucosa perforation and bone meal filling parts cannot uniformly surround the periphery of an implant root tip due to incomplete and non-uniform lifting of mucosa at the sinus floor in all directions and uncontrollable impact force, and the bone meal filling parts do not have sufficient bone mass at the periphery of the implant root tip in the later stage, and the specific scheme is as follows: the bone meal layout device for lifting the mucosa of the maxillary sinus comprises a spiral push rod, wherein one end of the spiral push rod is provided with an umbrella head for laying out bone substitute materials, and the periphery of the spiral push rod is in threaded connection with a limiter; the umbrella head comprises a supporting rod connected with the end part of the spiral push rod, the end part of the supporting rod is provided with a head part used for pushing mucous membrane, and the peripheral side of the supporting rod is provided with a rigid umbrella hair and a flexible umbrella hair, wherein the head part of the rigid umbrella Mao Sheyu is arranged between the head part of the rigid umbrella Mao Sheyu and the flexible umbrella hair.

Description

Bone meal layout device for lifting mucosa of maxillary sinus

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a bone meal layout device for lifting mucosa of a maxillary sinus.

Background

The planting of the maxillary posterior dental region is often limited by the problem of insufficient available bone height at the maxillary sinus floor, and according to the clinical operation guideline of oral planting, when the available bone height is 5-8mm, a scheme of synchronous planting by the alveolar ridge top maxillary sinus floor lifting technology (internal lifting) is needed to be selected. However, the prior art has the following problems:

1. the most widely used internal lifting operation at present mainly uses knocking lifting, and for knocking operation under blind vision, mucous membrane perforation is often caused by uncontrollable knocking force, so that the internal lifting technology is failed; moreover, in the knocking process, the depth of the knocking device is not easy to control.

2. When the lifting height is 3-5mm, bone substitute materials mainly containing bone powder are needed to be placed under the sinus floor mucosa, and simultaneously implant is needed. However, as the approach of the technology is a knock-on lifting method of the top of the alveolar ridge, the lifting of the sinus floor mucous membrane in all directions is not completely uniform, and the bone substitute material cannot be distributed under the operation field of the limited alveolar ridge under blind vision, so that the bone powder filling part cannot uniformly surround the root tip of the implant, and the bone mass is not fully formed in the root tip peripheral part of the implant in the later stage.

3. When the lifting height is 0-3mm, the implant can be implanted synchronously without arranging bone substitute materials under the sinus floor mucosa or arranging gelatin sponge/CGF/collagen and other non-rigid materials under the sinus floor mucosa. Furthermore, as the implant is made of a non-hard material, the sinus membrane cannot be pushed to be further and evenly peeled off, incomplete uneven lifting of the sinus membrane in all directions is more easily caused, and finally, the periapical part of the implant is not formed with sufficient bone mass.

The bone powder placing instruments which can be used in clinic are various, and the bone powder can be conveyed into the alveolar bone, but the bone powder which is conveyed into the alveolar bone cannot be reasonably distributed, so that the problems cannot be effectively solved.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the bone powder layout device for lifting the mucosa of the maxillary sinus, which can perform three-dimensional layout of bone powder between the bone-shaped sinus floor of the maxillary sinus and the mucosa of the maxillary sinus when bone substitute materials mainly containing bone powder are needed to be put in. When non-rigid materials such as gelatin sponge/CGF/collagen are needed to be placed, three-dimensional extrusion can be performed through the arrangement of the umbrella head and the umbrella hair, so that the density of the non-rigid materials in a local area is improved, and the function of further extruding, pushing and stripping mucous membranes is achieved.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

the bone meal layout device for lifting the mucosa of the maxillary sinus comprises a spiral push rod, wherein one end of the spiral push rod is provided with an umbrella head for laying out bone substitute materials, and the periphery of the spiral push rod is in threaded connection with a limiter; the umbrella head comprises a supporting rod connected with the end part of the spiral push rod, the end part of the supporting rod is provided with a head part used for pushing mucous membrane, and the peripheral side of the supporting rod is provided with a rigid umbrella hair and a flexible umbrella hair, wherein the head part of the rigid umbrella Mao Sheyu is arranged between the head part of the rigid umbrella Mao Sheyu and the flexible umbrella hair.

As a further implementation manner, the other end of the spiral pushing rod is provided with a handle.

As a further implementation mode, the limiter comprises a limiting block, the limiting block is in a convex shape, the top of the limiting block is connected with a sleeve, and the sleeve is located on the periphery of the spiral push rod.

As a further implementation mode, the spiral push rod comprises a threaded portion and a smooth portion, and the limiting block is axially provided with an internal thread and is used for being matched with the threaded portion.

As a further implementation, the outer side of the head is provided with an arc shape.

As a further implementation, the rigid umbrella Mao Duanbu is spherical.

As a further implementation, the length of the rigid pili is less than the length of the flexible pili.

As a further implementation, the diameter of the support rod is smaller than the diameter of the screw rod.

As a further implementation mode, the length of the handle is 4-6mm, the length of the spiral pushing rod is 8-10mm, and the length of the umbrella head is 5mm.

As a further implementation manner, the length of the threaded portion is 5mm, the length of the smooth portion is 5mm, and scales are arranged on the smooth portion.

The beneficial effects of the utility model are as follows:

1. the umbrella head of the utility model is divided into a design of rigidity and foldable (flexible), which not only can ensure the lateral pushing force of the umbrella head, but also can enlarge the continuous pushing stripping range of the umbrella head. The rigid part can loosen the hard bone substitute material, so that the peek material can continuously push the material and the mucous membrane peeling range can be enlarged. When bone substitute materials mainly containing bone powder are needed to be placed, the bone powder can be arranged in three dimensions between the maxillary sinus floor and the mucosa of the maxillary sinus floor. When non-rigid materials such as gelatin sponge/CGF/collagen are needed to be placed, three-dimensional extrusion can be performed through the arrangement of the umbrella head and the umbrella hair, so that the density of the non-rigid materials in a local area is improved, and the function of further extruding, pushing and stripping mucous membranes is achieved.

2. The outer side of the head of the umbrella head is arranged in an arc shape, specifically, the head is slightly convex towards the sinus membrane direction in the center, the function of pushing the mucous membrane upwards is achieved, the sinus membrane is supported, stress concentration of the mucous membrane is avoided, and meanwhile the existing bone powder is pushed to apply pressure to the root.

3. The rigid umbrella Mao Duanbu of the utility model takes the shape of a sphere and plays the roles of pushing bone substitute materials, soft materials and loose bone powder horizontally and laterally.

4. According to the utility model, the limiting block has a bidirectional limiting function, so that the limiting block can prevent instruments from falling into the maxillary sinus in the using process; the limitation of the depth can also be performed by the screw thread.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a schematic diagram of the overall structure of a bone meal placement device for lifting mucosa of a maxillary sinus according to an embodiment of the present utility model.

FIG. 2 is a schematic view of the structure of the head part of the umbrella according to the embodiment of the present utility model.

Fig. 3 is a schematic diagram showing an operating state of a bone powder placement device for lifting mucosa of maxillary sinus according to an embodiment of the present utility model

In the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustration is only schematic.

Wherein: 1. umbrella head, screw push rod, handle and limiter; 1-1 parts of heads, 1-2 parts of rigid pili, 1-3 parts of flexible pili and 1-4 parts of supporting rods; 2-1, a threaded part and 2-2, a smooth part; 4-1, limiting blocks and 4-2, sleeves.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

Example 1

In a typical embodiment of the present utility model, referring to fig. 1 to 3, a bone powder placement device for lifting mucosa of maxillary sinus comprises a screw rod 2, wherein one end of the screw rod 2 is provided with an umbrella head 1 for placement of bone substitute material, the circumferential side of the screw rod is in threaded connection with a limiter 4, and the other end of the screw rod 2 is provided with a handle 3. Through rotating handle 3, can realize that screw push rod 2 takes place relative motion with stopper 4, and then realize the position control to umbrella head 1.

The limiter 4 comprises a limiting block 4-1, the limiting block 4-1 is in a convex shape, the top of the limiting block 4-1 is connected with a sleeve 4-2, and the sleeve 4-2 is positioned on the circumferential side of the spiral push rod 2. The spiral push rod 2 comprises a threaded part 2-1 and a smooth part 2-2, and the limiting block 4-1 is axially provided with an internal thread for being in threaded fit with the threaded part 2-1.

The stopper 4 is made of a metal material, and the length of the stopper 4 of this embodiment is 8mm. The sleeve 4-2 is used for being inserted into the inner part of an alveolar bone, the length is 4mm, and the sleeve 4-2 is fixedly sleeved at a boss at the top of the limiting block 4-1 and has a guiding function.

The length of the limiting block 4-1 is 4mm and is used for being clamped at the outer edge of an alveolar bone, the cross section of the limiting block is of a convex design, the limiting block is convenient to clamp and limit with the outer edge of the alveolar bone, the length of the part of the limiting block 4-1, which is positioned in the alveolar bone, is 1mm, and the length of the part, which is positioned outside the alveolar bone, is 3mm.

The length of the handle 3 is 4-6mm, the length of the screw rod 2 is 8-10mm, the length of the handle 3 is preferably 5mm, the diameter is 5mm, and the length of the screw rod 2 is preferably 10mm. Wherein on the spiral push rod 2, the length of the thread part 2-1 is 5mm, the length of the smooth part 2-2 is 5mm, and the diameter of the spiral push rod 2 is 2mm. The smooth part 2-2 is provided with scales, so that the pushing depth of the spiral push rod 2 can be conveniently observed.

Further, the umbrella head 1 comprises a supporting rod 1-4 connected with the end part of the spiral pushing rod 2, the end part of the supporting rod 1-4 is provided with a head part 1-1 for pushing mucous membrane, the peripheral side of the supporting rod 1-4 is provided with a rigid umbrella hair 1-2 and a flexible umbrella hair 1-3, and the rigid umbrella hair 1-2 is arranged between the head part 1-1 and the flexible umbrella hair 1-3.

The outer side of the head 1-1 is arranged in an arc shape, specifically, the head 1-1 is slightly convex towards the sinus membrane at the center, and the function of pushing the mucous membrane upwards is achieved. The diameter of the head part 1-1 is 4mm, and the length of the umbrella head is 5mm.

The length of the supporting rods 1-4 is 5mm, the diameter of the supporting rods 1-4 is smaller than that of the spiral pushing rod 2, and the diameter of the supporting rods 1-4 is preferably 1.5mm. On the side of the circumference of the supporting rod 1-4, a rigid umbrella hair 1-2 is arranged within the range of 2mm close to the umbrella head, and is specifically arranged as follows: 8 rigid umbrella hairs 1-2 are uniformly arranged on the circumferential side of the support rod 1-4 at intervals of 0.5 mm. The length of the rigid umbrella hair 1-2 is 2mm, the rigid umbrella hair 1-2 does not need to shrink, and the end part of the rigid umbrella hair 1-2 is spherical with the diameter of 0.5mm, so that the functions of pushing bone substitute materials horizontally and laterally and extruding soft materials and loose bone powder are achieved.

The length of the rigid pili 1-2 is smaller than the length of the flexible pili 1-3. The flexible fimbriae 1-3 of this embodiment are made of collapsible peek material. A group of flexible umbrella hair 1-3 is arranged on the support rod 1-4 at the position close to the head part by 2.5mm, and the length is 2.5mm; the position close to the head part by 3mm is provided with a second group of flexible pili 1-3 with the length of 3mm, so that the flexible pili can be prevented from being embedded in the recycling process. The arrangement of the flexible pili 1-3 plays a role in further expanding the scope of the sinus membrane after being peeled off close to the flat side direction of the osseous Dou Deshui. The setting density of the flexible pili 1-3 of the embodiment is smaller than that of the rigid pili 1-2, so that the bone meal incarceration is effectively reduced.

During actual operation, the spiral push rod 2 is rotated through the handle 3, the depth of the spiral push rod 2 is accurately controlled by combining the scales on the smooth part 2-2, the umbrella head 1 is arranged at the end part of the manual spiral push rod 2, and the mucous membrane stress can be effectively reduced due to the arrangement of the head 1-1. The convex design of umbrella head portion props up the sinus floor mucosa, and the mucosa does not have stress concentration, pushes away the pressure of current bone meal to root side simultaneously.

The rigid ball head umbrella hair of the embodiment can effectively loosen and push bone substitute materials to be distributed around, and push the existing bone powder to press horizontally around. The flexible umbrella hair 1-3 can effectively close to the bone sinus floor to carry out the near-far middle cheek lingual stripping of mucous membrane. The peek material has no stress concentration on mucous membrane and no risk of perforation of mucous membrane.

The limiting block 4-1 of the limiting block 4 has a bidirectional limiting function, and the limiting block 4 can prevent the instrument from falling into the maxillary sinus in the use process; the limitation of the depth can also be performed by the screw thread.

The bone meal layout device for lifting the mucosa of the maxillary sinus of the embodiment adopts a spiral push rod type design, and in the process of lifting the sinus floor and placing the bone meal, the strength is continuously controllable, and the lifting value of the mucosa of the sinus floor is accurately mastered. When bone substitute materials are needed to be placed in the operation, the bone powder can be uniformly distributed through the rigid umbrella hair 1-2 and the flexible umbrella hair 1-3. When non-hard materials are needed to be placed in the operation, the local density of the non-hard materials can be improved, the sinus floor mucous membrane is evenly pushed, and further stripping and lifting are realized.

The umbrella head of the embodiment is divided into a design of rigidity and foldable (flexible), so that the lateral pushing force of the umbrella head can be ensured, and the continuous pushing stripping range of the umbrella head can be enlarged. The rigid part can loosen the hard bone substitute material, so that the continuous pushing of the peek material and the realization of expanding the mucous membrane peeling range are facilitated.

When bone substitute materials mainly containing bone powder are needed to be placed in the maxillary sinus mucosa lifting operation through the alveolar ridge, the bone powder three-dimensional layout between the maxillary sinus bone sinus floor and the maxillary sinus floor mucosa can be performed.

When non-rigid materials such as gelatin sponge/CGF/collagen are needed to be placed in the maxillary sinus mucosa lifting operation through the alveolar ridge, three-dimensional extrusion can be performed through the arrangement of the umbrella head and the umbrella hair, so that the density of the non-rigid materials in a local area is improved, and the effect of further extruding, pushing and stripping the mucosa is achieved.

It should be noted that the dimensions of each structure in the bone powder placement device for maxillary sinus mucosa lifting in this embodiment are designed based on the mean value data of the first molar (the tooth position most frequently needed to perform maxillary sinus mucosa lifting in clinic): selecting the near-far middle gap width W of the tooth-missing region: 12mm, gingival retraction gap H: for 7mm, the remaining alveolar bone height is set to 5mm, since this area needs to be placed with diameter Lw:4.5mm or more, and thus, the diameter of the alveolar ridge-crest approach is set to 4.5mm. In other examples, the bone meal layout device may be sized according to the particular circumstances.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The bone meal layout device for lifting the mucosa of the maxillary sinus is characterized by comprising a spiral push rod, wherein one end of the spiral push rod is provided with an umbrella head for laying out bone substitute materials, and the peripheral side of the spiral push rod is in threaded connection with a limiter; the umbrella head comprises a supporting rod connected with the end part of the spiral push rod, the end part of the supporting rod is provided with a head part used for pushing mucous membrane, and the peripheral side of the supporting rod is provided with a rigid umbrella hair and a flexible umbrella hair, wherein the head part of the rigid umbrella Mao Sheyu is arranged between the head part of the rigid umbrella Mao Sheyu and the flexible umbrella hair.

2. The bone meal placement device for lifting maxillary sinus mucosa of claim 1, wherein a handle is provided at the other end of the screw rod.

3. The bone meal layout device for lifting the mucosa of the maxillary sinus of claim 2, wherein the limit stopper comprises a limit stopper, the limit stopper is in a convex shape, the top of the limit stopper is connected with a sleeve, and the sleeve is positioned on the periphery of the spiral pushing rod.

4. A bone meal placement device for lifting a mucosa of a maxillary sinus according to claim 3, wherein the screw pushing rod comprises a threaded portion and a smooth portion, and the stopper is axially provided with an internal thread for being engaged with the threaded portion.

5. The bone meal placement device for maxillary sinus mucosa lifting of claim 1, wherein the outer side of the head is arcuately disposed.

6. The bone meal placement device for maxillary sinus mucosa lifting of claim 1, wherein said rigid umbrella Mao Duanbu is spherical.

7. A bone meal placement device for maxillary sinus mucosa elevation according to claim 6, wherein the length of said rigid pili is less than the length of said flexible pili.

8. The bone meal placement device for maxillary sinus mucosa elevation of claim 1, wherein the diameter of the support rod is smaller than the diameter of the screw rod.

9. The bone meal placement device for lifting maxillary sinus mucosa of claim 2, wherein the length of the handle is 4-6mm, the length of the screw pushing rod is 8-10mm, and the length of the umbrella head is 5mm.

10. The bone meal placement device for lifting a mucosa of a maxillary sinus of claim 4, wherein the length of the threaded portion is 5mm, the length of the smooth portion is 5mm, and graduations are provided on the smooth portion.