CN219579063U

CN219579063U - Lifting device in maxillary sinus

Info

Publication number: CN219579063U
Application number: CN202320296161.4U
Authority: CN
Inventors: 朱添幸; 詹剑锋
Original assignee: Guilin Woodpecker Medical Instruments Co Ltd
Current assignee: Guilin Woodpecker Medical Instruments Co Ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-08-25
Anticipated expiration: 2033-02-23

Abstract

The utility model provides an intra-maxillary sinus lifting device which comprises a drill bit, an ejector and an elastic piece, wherein an accommodating groove is formed in the drill bit, and the ejector is slidably inserted into the accommodating groove; opposite ends of the elastic piece are respectively elastically propped against the drill bit and the ejector piece, and the sliding of the ejector piece along the accommodating groove can enable the elastic piece to be switched between an initial state and a compression state: when the elastic piece is in the initial state, one end of the ejector piece protrudes out of the drill bit; when the elastic piece is in the compressed state, the ejector piece is accommodated in the accommodating groove. The maxillary sinus inner lifting device can reduce the damage to the mucosa at the bottom of the maxillary sinus in the maxillary sinus inner lifting operation.

Description

Lifting device in maxillary sinus

Technical Field

The utility model relates to the field of oral medical treatment, in particular to an intra-maxillary sinus lifting device.

Background

In the maxillary sinus lifting operation, the mucosa at the bottom of the maxillary sinus needs to be lifted upwards, so that a space is reserved for filling bone powder. In the prior art, a dental rotary drill bit is used for drilling the mucosa at the bottom of the maxillary sinus, and a manual internal lifting device is used for lifting the mucosa at the bottom of the maxillary sinus. Because the operation lifting is a blind operation, no visual field is visible, and the lifting process is guided by the feeling of an operator, when the dental rotary drill bit drills into the maxillary sinus floor mucosa, the operator cannot stop the drill bit at the first time, so that the rotary drill bit continues to work to damage the maxillary sinus floor mucosa.

Disclosure of Invention

In order to solve the above-mentioned technical problems, it is necessary to provide an intra-maxillary sinus lifting device to reduce the damage to the mucosa at the bottom of the maxillary sinus during the intra-maxillary sinus lifting operation.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the device comprises a drill bit, an ejector piece and an elastic piece, wherein a containing groove is formed in the drill bit, and the ejector piece is inserted into the containing groove in a sliding manner; opposite ends of the elastic piece are respectively elastically propped against the drill bit and the ejector piece, and the sliding of the ejector piece along the accommodating groove can enable the elastic piece to be switched between an initial state and a compression state: when the elastic piece is in the initial state, one end of the ejector piece protrudes out of the drill bit; when the elastic piece is in the compressed state, the ejector piece is accommodated in the accommodating groove.

Further, a guide post is fixed in the accommodating groove, a mounting groove is formed in the ejector piece, one end of the elastic piece is positioned in the accommodating groove and sleeved outside the guide post, and the other end of the elastic piece is accommodated in the mounting groove.

Further, the mounting groove and the guide post are coaxially arranged, the mounting groove penetrates through the end face of the ejector facing the guide post, and the ejector is sleeved on the guide post in a sliding manner through the mounting groove.

Further, the guide post and the mounting groove are both arranged on the central shaft of the drill bit.

Further, a step part is arranged on the inner peripheral wall of the accommodating groove, a limit protrusion is convexly arranged on the outer peripheral wall of the ejector, and the limit protrusion is slidably arranged in the accommodating groove and can abut against the step part to limit the length of the ejector extending out of the drill bit.

Further, the accommodating groove comprises a first accommodating part and a second accommodating part which are coaxially arranged and mutually communicated, the second accommodating part penetrates through one end of the drill bit to form an opening for the ejector to enter and exit, and the aperture of the second accommodating part is smaller than that of the first accommodating part so as to form the step part between the second accommodating part and the first accommodating part; the limiting protrusion is slidably arranged on the first accommodating portion.

Further, the drill bit comprises a head and a connecting handle with one end fixed with the head, the first accommodating part and the second accommodating part are both arranged on the head, the first accommodating part is closer to the connecting handle than the second accommodating part, and the opening is arranged at the end part of the head opposite to the connecting handle; the head is provided with a plurality of saw teeth, and the saw teeth are arranged around the periphery of the opening.

Further, the ejector is also provided with at least one weight-reducing groove.

Further, the elastic piece is a spring.

Further, when the elastic piece is in the initial state, the length of the ejector piece protruding out of the drill bit is 1mm.

By adopting the technical scheme, the utility model has the following beneficial effects:

according to the device, the ejector piece is arranged outside the drill bit in a protruding mode under the action of the elastic piece in the initial state, so that when the device works in the maxillary sinus, the ejector piece firstly contacts with the bone piece at the bottom of the maxillary sinus, at the moment, the ejector piece is extruded to shrink inwards towards the drill bit until the ejector piece is completely contained in the containing groove of the drill bit, so that the drill bit can touch the bone piece, then the drill bit works to drill bone, in the process, the ejector piece always pushes the bone piece upwards due to elastic restoring force of the elastic piece, after the drill bit completely drills through the bone piece, pressure applied to the ejector piece by the bone piece disappears, and the ejector piece instantly pushes up the bone piece and the mucosa at the bottom of the maxillary sinus together, so that contact between the drill bit and the mucosa at the bottom of the maxillary sinus is avoided, and damage to the mucosa at the bottom of the maxillary sinus is avoided to the greatest extent.

Drawings

FIG. 1 is a schematic perspective view of a lifting device in a maxillary sinus according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view showing a front view of the lifting device in the maxillary sinus shown in FIG. 1;

FIG. 3 is a schematic top view of the lift device in the maxillary sinus shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the intra-maxillary sinus lifting device of FIG. 3 along line A-A;

FIG. 5 is a schematic view illustrating a construction of the lift device in the maxillary sinus shown in FIG. 4 when the ejector is received in the drill;

description of the main reference signs

100. An intra maxillary sinus lifting device; 10. a drill bit; 11. a receiving groove; 112. a step portion; 114. a first housing part; 116. a second accommodating portion; 117. an opening; 12. a head; 14. a connecting handle; 15. a guide post; 16. saw teeth; 30. a push member; 31. a limit protrusion; 33. a mounting groove; 35. a weight reduction groove; 50. an elastic member.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

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. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a preferred embodiment of the present utility model provides an intra-maxillary sinus lifting device 100, which includes a drill 10, an ejector 30 and an elastic member 50, wherein the ejector 30 is slidably mounted on the drill 10 through the elastic member 50.

The drill bit 10 is provided with a receiving groove 11, and the receiving groove 11 is used for mounting the ejector 30. In this embodiment, the drill bit 10 includes a head 12 and a connection handle 14 with one end fixed to the head 12, where the connection handle 14 is used to connect with an external power source to drive the drill bit 10 to work, for example, the drill bit 10 may drive rotation through a motor, may drive vibration through ultrasonic action, and may also drive vibration through acoustic action, and the power source is not limited in this embodiment. The accommodating groove 11 is formed in the head 12 of the drill bit 10, a step portion 112 is formed on a groove wall of the accommodating groove 11, specifically, the accommodating groove 11 includes a first accommodating portion 114 and a second accommodating portion 116 which are coaxially arranged and are mutually communicated, the first accommodating portion 114 and the second accommodating portion 116 are both formed in the head 12, the first accommodating portion 114 is closer to the connecting handle 14 than the second accommodating portion 116, and the second accommodating portion 116 penetrates through an end portion of the drill bit 10, which is opposite to the connecting handle 14, so as to form an opening 117 for the ejector 30 to enter and exit; the aperture of the second receiving portion 116 is smaller than the aperture of the first receiving portion 114, so as to form the step portion 112 between the second receiving portion 116 and the first receiving portion 114. A guide post 15 is also fixed in the accommodating groove 11, in this embodiment, the guide post 15 is disposed on the central shaft of the drill bit 10, one end of the guide post 15 is fixed with the groove wall of the first accommodating groove 11, and the other end of the guide post 15 extends into the second accommodating portion 116. The head 12 is provided with a plurality of serrations 16, and the plurality of serrations 16 are disposed around the periphery of the opening 117 for performing a bone drilling operation when the drill bit 10 is in operation.

The ejector 30 is slidably inserted into the accommodating groove 11; in the present embodiment, the ejector 30 is coaxially disposed with the drill 10, and one end of the ejector 30 is slidably inserted into the first receiving portion 114 of the receiving groove 11 through the opening 117 and the second receiving portion 116 in order. The outer peripheral wall of the ejector 30 is convexly provided with a limiting protrusion 31, and the limiting protrusion 31 is slidably arranged in the first accommodating portion 114 of the accommodating groove 11 and can abut against the step portion 112 to limit the length of the ejector 30 extending out of the drill bit 10. In the present embodiment, the ejector 30 is further provided with a mounting groove 33, the mounting groove 33 is disposed coaxially with the guide post 15, the mounting groove 33 is disposed on a central axis of the ejector 30, and the ejector 30 is slidably sleeved on the guide post 15 through the mounting groove 33, penetrating through an end surface of the ejector 30 facing the guide post 15 in an axial direction of the ejector 30. The ejector 30 is further provided with at least one weight-reducing groove 35. In the present embodiment, at least one weight-reducing groove 35 is disposed around the central axis of the ejector 30 at intervals, and each weight-reducing groove 35 penetrates through the end surface of the ejector 30 away from the saw teeth 16 along the axial direction of the ejector 30.

Opposite ends of the elastic member 50 elastically abut against the drill bit 10 and the ejector member 30, and sliding the ejector member 30 along the accommodating groove 11 can switch the elastic member 50 between an initial state and a compressed state: when the elastic piece 50 is in the initial state, one end of the ejector piece 30 protrudes out of the drill bit 10; in the present embodiment, when the elastic member 50 is in the initial state, the ejector 30 protrudes from the drill bit 10 by a length of about 1mm. When the elastic member 50 is in a compressed state, the ejector 30 is accommodated in the accommodating groove 11. In this embodiment, the elastic member 50 is a spring, and one end of the elastic member 50 is located in the accommodating groove 11 and sleeved outside the guide post 15, and contacts with the groove wall of the first accommodating portion 114; the other end of the elastic member 50 is accommodated in the mounting groove 33 and contacts the groove wall of the mounting groove 33.

When the above-mentioned lifting device 100 in the maxillary sinus is in the normal non-working state, as shown in fig. 4, the elastic member 50 is in a natural state, at this time, one end of the ejector member 30 away from the connecting handle 14 protrudes outside the drill bit 10 under the action of the elastic member 50 to have an outward pushing trend, and the limit protrusion 31 on the ejector member 30 abuts against the step portion 112 on the inner wall of the accommodating groove 11 on the drill bit 10, so that the ejector member 30 is positioned relative to the drill bit 10, thereby ensuring that the ejector member 30 always protrudes beyond the drill bit 10 by a preset distance.

When the above-mentioned device 100 for lifting up a maxillary sinus is in an operating state, as shown in fig. 5, a doctor pushes the end of the drill bit 10 with the ejector 30 protruding upward toward the maxillary sinus bottom, and in this process, the end of the ejector 30 located outside the drill bit 10 contacts the bone block at the maxillary sinus bottom first, so that the ejector 30 is pressed by the bone block to shrink back until the saw teeth 16 of the drill bit 10 touch the bone block, and at this time, the ejector 30 is completely accommodated in the accommodating groove 11 of the drill bit 10. Then, the drill bit 10 is driven by the power source to drill through the bone blocks in a rotating or vibrating manner, in the process, the ejector 30 always pushes the bone blocks away from the connecting handle 14 due to the elastic restoring force of the elastic element 50, after the drill bit 10 completely drills through the bone blocks, the pressure applied to the ejector 30 by the bone blocks disappears, and the ejector 30 instantly pushes up the drilled bone blocks and the maxillary sinus floor mucous membrane together in a direction away from the saw teeth 16, so that the saw teeth 16 on the drill bit 10 are prevented from being contacted with the maxillary sinus floor mucous membrane, and the damage to the maxillary sinus floor mucous membrane is avoided to the greatest extent.

In the above-mentioned lifting device 100 in the maxillary sinus, the ejector 30 is protruded outside the drill bit 10 under the action of the elastic member 50, so when the lifting device 100 in the maxillary sinus works, the ejector 30 contacts the bone block at the maxillary sinus floor first, at this time, the ejector 30 is pressed by the bone block to shrink toward the drill bit 10 until the ejector 30 is completely accommodated in the accommodating groove 11 of the drill bit 10 and the drill bit 10 hits the bone block, and then the drill bit 10 works to drill the bone block, in this process, the ejector 30 always pushes the bone block upward due to the elastic restoring force of the elastic member 50, when the drill bit 10 completely drills the bone block, the pressure applied to the ejector 30 by the bone block disappears, and the ejector 30 instantly pushes up the bone block and the maxillary sinus floor mucous membrane together under the elastic restoring force of the elastic member 50, thereby avoiding the contact between the drill bit 10 and the maxillary sinus floor mucous membrane, and avoiding the damage to the maxillary sinus floor mucous membrane to the greatest extent.

The above-mentioned lifting device 100 in maxillary sinus can guide the sliding of the ejector 30 and the telescopic movement of the elastic member 50 through the cooperation of the guide post 15 and the mounting groove 33, so that the sliding of the ejector 30 is more stable, the resetting precision of the elastic member 50 is improved, and the service life of the elastic member 50 is prolonged. In addition, the weight of the ejector 30 can be reduced by the weight-reducing groove 35, so that the consumable materials required for production are reduced, and the production cost is reduced.

It will be appreciated that the elastic member 50 is not limited to the spring of the present embodiment, and other structures of elastic restoring members in the prior art, such as an elastic sleeve, etc., may be used.

It is understood that the number of the guide posts 15, the mounting slots 33 and the elastic members 50 can be other numbers as required, and the utility model is not limited thereto.

It will be appreciated that in the initial state, the predetermined distance that the ejector 30 protrudes from the drill bit 10 may be set to other values as desired.

The foregoing description is directed to the preferred embodiments of the present utility model, but the embodiments are not intended to limit the scope of the utility model, and all equivalent changes or modifications made under the technical spirit of the present utility model should be construed to fall within the scope of the present utility model.

Claims

1. The device is characterized by comprising a drill bit, an ejector piece and an elastic piece, wherein a containing groove is formed in the drill bit, and the ejector piece is slidably inserted into the containing groove; opposite ends of the elastic piece are respectively elastically propped against the drill bit and the ejector piece, and the sliding of the ejector piece along the accommodating groove can enable the elastic piece to be switched between an initial state and a compression state: when the elastic piece is in the initial state, one end of the ejector piece protrudes out of the drill bit; when the elastic piece is in the compressed state, the ejector piece is accommodated in the accommodating groove.

2. The device according to claim 1, wherein the receiving groove is internally fixed with a guide post, the ejector is internally provided with a mounting groove, one end of the elastic element is positioned in the receiving groove and sleeved outside the guide post, and the other end of the elastic element is received in the mounting groove.

3. The maxillary sinus lifting device according to claim 2, wherein the mounting groove is provided coaxially with the guide post, the mounting groove penetrates through an end surface of the ejector facing the guide post, and the ejector is slidably sleeved on the guide post through the mounting groove.

4. The maxillary sinus lifting device of claim 3, wherein the guide post and the mounting slot are both disposed on a central axis of the drill bit.

5. The lifting device in the maxillary sinus according to claim 1, wherein a stepped portion is provided on an inner peripheral wall of the receiving groove, a limit protrusion is provided on an outer peripheral wall of the ejector, and the limit protrusion is slidably provided in the receiving groove and can abut against the stepped portion to limit a length of the ejector extending out of the drill.

6. The device according to claim 5, wherein the housing groove includes a first housing portion and a second housing portion coaxially disposed and communicating with each other, the second housing portion penetrating through one end of the drill bit to form an opening for the ejector to enter and exit, the second housing portion having a smaller aperture than the first housing portion to form the step portion between the second housing portion and the first housing portion; the limiting protrusion is slidably arranged on the first accommodating portion.

7. The maxillary sinus lifting device according to claim 6, wherein the drill comprises a head and a connecting handle with one end fixed to the head, the first and second receiving portions are both provided on the head, the first receiving portion is closer to the connecting handle than the second receiving portion, and the opening is provided at an end of the head opposite to the connecting handle; the head is provided with a plurality of saw teeth, and the saw teeth are arranged around the periphery of the opening.

8. The intramaxillary sinus lifting device of claim 1, wherein the ejector is further provided with at least one weight-reducing slot.

9. The intramaxillary sinus lifting device of claim 1, wherein the elastic member is a spring.

10. The intramaxillary sinus lifting device according to claim 1, wherein the length of the ejector protruding from the drill is 1mm when the elastic member is in the initial state.