Gingival retractor with variable gingival retracting angle

Abstract

The embodiment of the present invention provides a gingival retractor with a variable gingival retraction angle, comprising: a gingival retractor head assembly, a holding rod, the gingival retractor head assembly comprising a gingival retractor sheet, a bracket, and a connecting portion, the gingival retractor sheet is detachably connected to the bracket through the connecting portion, the bracket is provided with a ball joint, the ball joint is connected to one end of the holding rod, and further comprises a buccal mucosa protection sheet, the buccal mucosa protection sheet is detachably connected to the holding rod and can be moved away from or toward the gingival retractor head assembly along the length extension direction of the holding rod. The greatest feature of this gingival retractor is that during the tooth preparation process, the gingival sheet can be selected at multiple angles, making the gingival retraction more convenient, facilitating the operator to perform good shoulder preparation, preventing the occurrence of pulling pain and bleeding caused by gingival or mucosal damage, protecting the mucosal tissue while maximizing the patient's comfort, and reducing the generation of medical waste such as gingival retraction cords and gingival retraction pastes.

Description

Technical Field

[0001] The invention relates to medical instruments, in particular to a gingival retractor with a variable gingival retraction angle. Background Art

[0002] When repairing a tooth, the first thing to do is to prepare the tooth so that the tooth can be polished into the required shape to repair the defect.

[0003] In the process of implementing the present invention, the applicant discovered that there are at least the following problems in the prior art:

[0004] Currently, gingival retraction cords and gingival retraction creams are the main methods for gingival retraction. These two methods lack protection for the gums. If tooth preparation is performed in the gingival retraction state, the gums are easily damaged. Summary of the invention

[0005] The embodiment of the present invention provides a gingival retractor with a variable gingival retraction angle. During the tooth preparation process, the gingival sheet can be selected at multiple angles, making the gingival retraction more convenient and facilitating the operator to perform good shoulder preparation, preventing the occurrence of traction pain and bleeding due to gingival or mucosal damage, protecting the mucosal tissue while maximizing the patient's comfort, and reducing the generation of medical waste such as gingival retraction cords and gingival retraction creams.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides a gingival retractor with a variable gingival retraction angle, comprising: a gingival retractor head assembly, a holding rod, the gingival retractor head assembly comprising a gingival retractor plate, a bracket, and a connecting portion, the gingival retractor plate is detachably connected to the bracket via the connecting portion, the bracket is provided with a ball joint, the ball joint is connected to one end of the holding rod, and also comprises a buccal mucosa protection plate, the buccal mucosa protection plate is detachably connected to the holding rod and can be moved away from or toward the gingival retractor head assembly along the length extension direction of the holding rod.

[0007] Preferably, the buccal mucosa protection sheet is connected to the holding rod via a sliding connection seat, and the buccal mucosa protection sheet is clamped on the sliding connection seat.

[0008] Preferably, the material of the buccal mucosa protection sheet is silicone; and / or the material of the gingival retraction sheet is elastic material.

[0009] Preferably, the gingival retractor with variable gingival retraction angle further comprises a gripping ring, and the gripping ring is integrally formed with the gripping rod.

[0010] Preferably, the gingival retractor with variable gingival retractor angle also includes a gingival retractor head angle maintaining assembly, the gingival retractor head angle maintaining assembly includes a pressing piece and an angle maintaining piece, when the operator applies force to the pressing piece, the pressing piece will be displaced and force the angle maintaining piece to abut against the ball joint, when the operator releases the force on the pressing piece, the angle maintaining piece will disengage from the abutment with the ball joint, the interior of the holding rod has a hollow structure to form a linear guide for the movement of the angle maintaining piece.

[0011] Preferably, the pressing member includes an exposed portion protruding from the outside of the holding rod and a pressing guide member in the hollow structure, the pressing guide member is slidably connected in the hollow structure, and one side of the pressing guide member is detachably connected to one side of the exposed portion, a first return spring is clamped between the other side of the pressing guide member and the holding rod, and one side of the pressing guide member is arranged opposite to the other side of the pressing guide member.

[0012] Preferably, the angle retaining member includes a force-applying portion, a contact head and a connecting guide rod, the force-applying portion is connected to the contact head via the connecting guide rod, and when the exposed portion is pressed downward by force, the exposed portion and the force-applying portion are in sliding contact.

[0013] Preferably, the force-applying portion has a shoulder facing one side of the gingival retraction head assembly, and a second return spring is provided between the shoulder and the holding rod.

[0014] Preferably, the contact head has a spherical structure on the side facing the ball joint, and the spherical structure matches the outer surface of the ball joint; and or, the exposed portion has a first wedge surface on the side facing the force-applying portion, and the force-applying portion has a second wedge surface on the side facing the exposed portion, and the first wedge surface matches the second wedge surface.

[0015] Preferably, a finger-locking groove is further configured on the exposed portion; and / or, the first return spring is positioned by a spring positioning cap, and the spring positioning cap is detachably connected to the rod wall of the holding rod.

[0016] The above technical scheme has the following beneficial effects: the gingival retraction sheet of the present invention can conveniently retract the patient's gums, the setting of the ball joint can flexibly select the deflection angle of the gingival retraction head assembly within the range of 360°, so that the operator can prepare the shoulder well, and the setting of the buccal mucosa protection sheet can protect the patient's buccal mucosa, prevent bleeding caused by mucosal damage during operation, and prevent the occurrence of pulling pain, thereby improving the patient's medical comfort, and can also reduce the generation of medical waste such as gingival retraction cords and gingival retraction creams. In addition, the adoption of this technical scheme can avoid the occurrence of damage and bleeding of the patient's oral mucosa, especially the buccal mucosa, thereby greatly reducing the operator's time and cost of compressing the bleeding site to stop bleeding, and can also save the patient's medical time cost. The gingival retraction device of the present application does not require the use of additional chemical agents, avoids the pain caused by the gingival retraction cord gingival retraction method, and the chemical odor of the gingival retraction cream, improves the patient's comfort, reduces the patient's tension caused by the discomfort of gingival retraction, and improves the patient's medical experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of a gingival retractor with a variable gingival retracting angle according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle.

[0021] The reference numerals in the accompanying drawings are as follows: 1. gingival retraction head assembly; 11. gingival retraction plate; 12. bracket; 121. ball joint; 13. connecting portion; 2. holding rod; 3. buccal mucosa protection plate; 4. sliding connecting seat; 5. gingival retraction head angle maintaining assembly; 51. pressing member; 511. exposed portion; 5111. first wedge-shaped surface; 5112. finger-locking groove; 512. pressing guide member; 513. first return spring; 514. spring positioning cap; 52. angle maintaining member; 521. force-applying portion; 5211. second wedge-shaped surface; 522. second return spring; 523. connecting guide rod; 524. contact head; 6. holding ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 3 As shown, in combination with an embodiment of the present invention, there is provided a gingival retractor with a variable gingival retraction angle, comprising: a gingival retractor head assembly 1, a holding rod 2, the gingival retractor head assembly 1 comprising a gingival retractor sheet 11, a bracket 12, and a connecting portion 13, the gingival retractor sheet 11 being detachably connected to the bracket 12 via the connecting portion 13, the bracket 12 being provided with a ball joint 121, the ball joint 121 being connected to one end of the holding rod 2, and further comprising a buccal mucosa protection sheet 3, the buccal mucosa protection sheet 3 being detachably connected to the holding rod 2 and being capable of moving away from or toward the gingival retractor head assembly 1 along the length extension direction of the holding rod 2. The gingival retraction sheet 11 in the technical solution can conveniently retract the patient's gums, and the setting of the ball joint 121 can flexibly select the deflection angle of the gingival retraction head assembly 1 within the range of 360°, so that the operator can prepare the shoulder well, and the setting of the buccal mucosa protection sheet 3 can protect the patient's buccal mucosa, prevent bleeding caused by mucosal damage during operation, and prevent the occurrence of pulling pain, thereby improving the patient's medical comfort, and can also reduce the generation of medical waste such as gingival retraction cords and gingival retraction creams. In addition, the use of this technical solution can avoid the occurrence of damage and bleeding of the patient's oral mucosa, especially the buccal mucosa, thereby greatly reducing the operator's time and cost of compressing the bleeding site to stop bleeding, and can also save the patient's medical time cost. The gingival retraction device of the present application does not require the use of additional chemical agents, avoids the pain caused by the gingival retraction cord gingival retraction method, and the chemical odor of the gingival retraction cream, improves the patient's comfort, reduces the patient's tension caused by gingival retraction discomfort, and improves the patient's medical experience.

[0024] The connecting portion 13 is, for example, composed of a slot and a card respectively located between the gingival retraction piece 11 and the bracket 12, so that a convenient detachable structure is formed between the two, which may make it very convenient to replace the gingival retraction piece 11, so that a more suitable gingival retraction piece 11 can be replaced according to different patient conditions.

[0025] As an optional specific implementation, preferably, the buccal mucosa protection sheet 3 is connected to the holding rod 2 via a sliding connection seat 4, and the buccal mucosa protection sheet 3 is clamped on the sliding connection seat 4, so that the specific position of the buccal mucosa protection sheet 3 can be adjusted according to the specific oral condition of the patient, thereby improving the application scope of the present invention. The sliding connection seat 4 can be, for example, an annular body similar to a clamp structure.

[0026] The material of the buccal mucosa protection sheet 3 is preferably silicone. The use of silicone can have a certain strength and a certain flexibility, and can effectively protect the patient's oral cheek; the material of the gingival retraction sheet 11 is an elastic material, so that the gingival retraction sheet 11 can change its specific shape through external force, so that the shape of the gingival retraction sheet 11 is more in line with the shape of the patient's tooth glaze, so as to play a molding role, reduce the doctor's treatment difficulty, reduce the operation time, and increase the patient's comfort. This design of gingival retraction sheet is particularly suitable for resin filling processes (such as lip and cheek wedge-shaped defect filling treatment, etc.).

[0027] Preferably, the gingival retractor with variable gingival retractor angle also includes a gripping ring 7, and the gripping ring 7 is integrally formed with the gripping rod 2. The operator passes his fingers through the gripping ring 7 to form a reliable operation of the gingival retractor. It is more appropriate to arrange the gripping ring 7 on one side of the gripping rod 2.

[0028] Furthermore, after the gingival retraction angle of the gingival retraction head assembly 1 is determined, the gingival retraction angle of the gingival retraction head assembly 1 can be adjusted and maintained at any time during operation. Preferably, the gingival retraction device with variable gingival retraction angle also includes a gingival retraction head angle maintaining assembly 5, and the gingival retraction head angle maintaining assembly 5 includes a pressing piece 51 and an angle maintaining piece 52. When the operator applies force to the pressing piece 51, the pressing piece 51 will be displaced and force the angle maintaining piece 52 to abut against the ball joint 121. When the operator releases the force on the pressing piece 51, the angle maintaining piece 52 will disengage from the abutment with the ball joint 121. The interior of the holding rod 2 has a hollow structure to form a linear guide for the movement of the angle maintaining piece 52. At this time, the operator can control whether the angle maintaining member 52 is in contact with the gingival retractor assembly 1 by pressing the pressing member 51, thereby achieving that the angle remains unchanged when pressing, and the angle can be flexibly adjusted when the pressing is released. In this way, there is no need to pull the gingival retractor out of the patient's mouth and then re-enter the mouth for operation after adjusting the angle externally as in some prior art gingival retractors, and the operation is more flexible and convenient.

[0029] Furthermore, the pressing member 51 includes an exposed portion 511 protruding from the outside of the gripping rod 2 and a pressing guide 512 in the hollow structure. The pressing guide 512 is slidably connected to the hollow structure, and one side of the pressing guide 512 is detachably connected to one side of the exposed portion 511. A first return spring 513 is sandwiched between the other side of the pressing guide 512 and the gripping rod 2. One side of the pressing guide 512 is disposed opposite to the other side of the pressing guide 512. Figure 1 As shown, the exposed portion 511 is preferably disposed in the grip ring 6. Furthermore, a finger-locking groove 5112 is also configured on the exposed portion 511, so that the operator's finger can be reliably and stably placed in the finger-locking groove 5112, which is convenient for pressure control.

[0030] The angle retaining member 52 includes a force-applying portion 521, a contact head 524 and a connecting guide rod 523. The force-applying portion 521 is connected to the contact head 524 via the connecting guide rod 523. When the exposed portion 511 is pressed downward, the exposed portion 511 and the force-applying portion 521 are in sliding contact. Figure 2 As shown, the exposed portion 511 is provided with a first wedge surface 5111 on the side facing the force-applying portion 521, and the force-applying portion 521 is provided with a second wedge surface 5211 on the side facing the exposed portion 511, and the first wedge surface 5111 and the second wedge surface 5211 match each other. When the exposed portion 511 is pressed, the exposed portion 511 overcomes the outward elastic force of the first return spring 513, forcing the first wedge surface 5111 to slide toward the second wedge surface 5211. Due to the wedge-shaped relationship and matching nature between the first wedge surface 5111 and the second wedge surface 5211, the exposed portion 511 is displaced in the upper part of the direction of the gripping rod 2, thereby forcing the force-applying portion 521 to drive the angle retaining member 52 to move toward the gum retraction head assembly 1 and abut against the ball joint 121. Then, the position of the ball joint 121 is fixed by the cooperative friction force between the two, that is, the angle of the gingival retraction head assembly 1 is maintained. Furthermore, the force-applying portion 521 has a boss facing the side of the gingival retraction head assembly 1, and a second return spring 522 is provided between the boss and the holding rod 2. At this time, when the pressing force applied to the exposed portion 511 is released, the first return spring 513 will push the exposed portion 511 to pop out, and at the same time, the second return spring 522 pushes the force-applying portion 521 and then drives the angle retaining member 52 to move away from the ball joint 121, thereby releasing the abutment between the contact head 524 and the ball joint 121. The operator can change the corresponding gingival retraction angle according to actual needs, and after the gingival retraction angle is determined, press the exposed portion 511 to achieve the fixed angle again.

[0031] The contact head 524 has a spherical structure on the side facing the ball joint 121, and the spherical structure matches the outer surface of the ball joint 121. Preferably, the side of the spherical structure in contact with the ball joint 121 is configured with a plurality of concave holes, and the plurality of concave holes are filled with silicone or rubber materials, thereby increasing the friction between the contact head 524 and the ball joint 121 during contact, thereby ensuring the stability of the angle. The first return spring 513 is positioned by a spring positioning cap 514, and the spring positioning cap 514 is detachably connected to the rod wall of the gripping rod 2.

[0032] Crown restoration is a commonly used restoration method in clinical practice today. During the crown preparation process, the basic design is a gingival shoulder. Due to aesthetic requirements, the labial and buccal sides of the anterior teeth are mostly subgingival shoulders. During tooth preparation, direct tooth preparation without protective measures can easily damage the gums. Gingival bleeding will affect the making of impressions, and gingival damage will also increase the patient's discomfort. During the preparation of the subgingival shoulder, the present invention can well protect the gingival tissue from damage and reduce the possibility of bleeding and damage. Because the instrument of the present invention is adjustable, it can be adjusted at various angles during tooth preparation to facilitate tooth preparation in the labial and buccal sides and in the mesial and distal directions. During the process of making impressions, the present invention has a good gingival retraction effect and at the same time reduces the discomfort caused to patients by other gingival retraction methods.

[0033] Among patients with caries, if there are caries edges located below the gums, the gums may be damaged during the cavity preparation process. The use of the present invention can well protect the gum tissue, avoid damage and bleeding, and thus avoid the harm caused by gum damage to the filling treatment. At the same time, the gingival retraction sheet in the present invention is an elastic material, which can be changed by external force. Therefore, during the resin filling process (such as the filling treatment of wedge-shaped defects on the lip and cheek sides), the shape of the gingival retraction sheet can be changed according to the axial shape of the tooth to play a shaping role, reduce the difficulty of treatment for doctors, reduce operation time, and increase patient comfort.

[0034] The present invention can protect the gingival tissue while retracting the gingiva. At the same time, the present invention is a non-disposable product and can be reused after disinfection. In the long run, it saves costs and reduces the generation of such medical waste (gingival retraction cords and gingival retraction creams). At the same time, because the protective effect on the gingiva is improved, the occurrence of gingival damage and bleeding can be avoided, thereby further reducing the time for compression hemostasis after gingival damage and bleeding in clinical operations, and increasing clinical efficiency. The present invention is non-invasive, painless, and does not require the use of additional chemical agents. It avoids the pain caused by the gingival retraction cord method and the chemical odor of the gingival retraction cream, improves the patient's comfort, reduces the patient's tension caused by the discomfort of gingival retraction, and improves the patient's medical experience.

[0035] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0036] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0037] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

[0038] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gingival retractor with a variable gingival retracting angle, characterized in that: include: A gingival retraction head assembly (1) and a holding rod (2), wherein the gingival retraction head assembly (1) comprises a gingival retraction sheet (11), a bracket (12), and a connecting portion (13), wherein the gingival retraction sheet (11) is detachably connected to the bracket (12) via the connecting portion (13), wherein the bracket (12) is provided with a ball joint (121), wherein the ball joint (121) is connected to one end of the holding rod (2), and further comprises a buccal mucosa protection sheet (3), wherein the buccal mucosa protection sheet (3) is detachably connected to the holding rod (2) and can be moved away from or toward the gingival retraction head assembly along the length extension direction of the holding rod (2). (1) movement; further comprising a gingival extraction head angle maintaining assembly (5), the gingival extraction head angle maintaining assembly (5) comprising a pressing member (51) and an angle maintaining member (52); when an operator applies force to the pressing member (51), the pressing member (51) will be displaced and thus force the angle maintaining member (52) to abut against the ball joint (121); when the operator releases the force applied to the pressing member (51), the angle maintaining member (52) and the ball joint (121) are disengaged; the interior of the holding rod (2) has a hollow structure to form a linear guide for the movement of the angle maintaining member (52); The gingival retractor with a variable gingival retracting angle further comprises a gripping ring (7), wherein the gripping ring (7) and the gripping rod (2) are integrally formed; The pressing member (51) comprises an exposed portion (511) protruding from the outside of the holding rod (2) and a pressing guide member (512) in the hollow structure, the pressing guide member (512) is slidably connected to the hollow structure, and one side of the pressing guide member (512) is detachably connected to one side of the exposed portion (511), a first return spring (513) is sandwiched between the other side of the pressing guide member (512) and the holding rod (2), and one side of the pressing guide member (512) is arranged opposite to the other side of the pressing guide member (512); The angle retaining member (52) comprises a force-applying portion (521), a contact head (524) and a connecting guide rod (523); the force-applying portion (521) is connected to the contact head (524) via the connecting guide rod (523); when the exposed portion (511) is pressed downward by force, the exposed portion (511) and the force-applying portion (521) are in sliding contact; The force-applying portion (521) has a convex shoulder facing one side of the gingival retraction head assembly (1), and a second return spring (522) is provided between the convex shoulder and the holding rod (2); The contact head (524) is spherical in structure on the side facing the ball joint (121), and the spherical structure matches the outer surface of the ball joint (121); and or, the exposed portion (511) is provided with a first wedge surface (5111) on the side facing the force-applying portion (521), and the force-applying portion (521) is provided with a second wedge surface (5211) on the side facing the exposed portion (511), and the first wedge surface (5111) and the second wedge surface (5211) match each other; The exposed portion (511) is also provided with a finger-locking groove (5112); and / or the first return spring (513) is positioned by a spring positioning cap (514), and the spring positioning cap (514) is detachably connected to the rod wall of the holding rod (2).

2. The gingival retractor with variable gingival retraction angle according to claim 1, characterized in that: The buccal mucosa protection sheet (3) is connected to the holding rod (2) via a sliding connection seat (4), and the buccal mucosa protection sheet (3) is clamped on the sliding connection seat (4).

3. The gingival retractor with variable gingival retraction angle according to claim 1, characterized in that: The material of the buccal mucosa protection sheet (3) is silicone; and / or the material of the gingival retraction sheet (11) is elastic material.

Images