CN220778464U - Planting impression transfer unit - Google Patents

Abstract

The application relates to a planting impression transfer assembly, which relates to the technical field of oral planting impressions and comprises a transfer body, a central screw and a screw cap; wherein the transfer body is provided with a first hole; the central screw comprises a threaded end, and the threaded end penetrates through and extends out of the first hole and is used for being in threaded connection with an implant to fix the transfer body and the implant in a compressed mode; the screw cap comprises a cap body and a fan blade set; wherein the fan blade group is fixed on the outer side of the cap body; the cap body and one end of the central screw, which is far away from the threaded end, are detachably clamped and fixed. In the windowed die, the central screw is driven to rotate through the screw cap, so that the windowed die has the effect of being suitable for a patient and small in opening degree; in the fenestration die, the central screw is rigidly abutted with the screw cap by the screw cap fixed in the die in the hard state, thereby increasing and ensuring the accuracy of resetting.

Description

Planting impression transfer unit

Technical Field

The application relates to the technical field of oral implant impressions, in particular to an implant impression transfer assembly.

Background

The current accurate implantation impression technology is an important link for ensuring the success of dental implant restoration. The implant impression technique can be classified into a window-type impression method and a window-type impression method.

The fenestration type impression method is to set fenestration holes in the tray corresponding to the implant, the central screw tail end of the transfer rod penetrates out from the fenestration, the screw tail end is acted by a screw driver, the central screw is unscrewed from the implant, after the screw tail end is leaked out, the transfer rod and the hard impression material are taken down together with the tray, and the impression material is taken out.

The window-closing type impression principle does not need to punch holes in the tray, only the hard impression material and the tray are taken down, then the central screw is unscrewed in the mouth, and the transfer rod is taken down to reset into the impression material, so that the impression material is taken out.

When the patient has small opening degree and the missing teeth are positioned at the back of the oral cavity or the sensitivity of the oral cavity of the patient is strong, the two methods have great difficulty in implementing the operation of unscrewing the central screw by using the screwdriver.

Disclosure of Invention

The application provides a planting impression transfer assembly, wherein in a windowed impression, a central screw is driven to rotate through a screw cap, so that the planting impression transfer assembly has the effect of being suitable for a patient and small in opening degree; in the fenestration die, the central screw is rigidly abutted with the screw cap by the screw cap fixed in the die in the hard state, thereby increasing and ensuring the accuracy of resetting.

The application provides a planting impression transfer unit, which comprises a transfer body, a central screw and a screw cap; wherein the transfer body is provided with a first hole; the central screw comprises a threaded end, the threaded end penetrates through and extends out of the first hole and is used for being in threaded connection with the implant to fix the transfer body and the implant in a compressed mode; the screw cap comprises a cap body and a fan blade set; wherein, the fan blade group is fixed on the outer side of the cap body; the cap body is fixed with the detachable joint of the one end of the central screw far away from the screw thread end.

As an alternative, the fan blade group includes at least two fan blades, and the two fan blades are arranged at intervals along the circumferential direction of the cap body.

As an alternative, the blade surface is provided with anti-skid patterns.

As an alternative, the anti-skid pattern is provided at an end of the fan blade remote from the cap.

As an alternative, a clamping groove is formed in one end, far away from the threaded end, of the central screw; the cap body is provided with a clamping hole, and the clamping hole accommodates one end of the central screw, which is provided with a clamping groove, and is used for being detachably clamped and fixed with the central screw.

As an alternative, the end of the central screw remote from the threaded end is provided with a recess for cooperation with a screwdriver; the groove is positioned at the inner side of the clamping groove.

As an alternative, the transfer body includes a main body portion, a gum penetrating portion, and a positioning portion; wherein the gum penetrating part is fixed at one end of the main body part; the positioning part is fixed on the side wall of the main body part and is positioned at one end of the main body part, which is provided with a gum penetrating part, and is used for contacting with gum.

As an alternative, the positioning portion includes at least two positioning members, and the at least two positioning members are disposed at intervals along the circumferential direction of the main body portion.

As an alternative, the main body part is a regular hexagonal member; the positioning part comprises two positioning pieces which are respectively positioned on two opposite side walls of the main body part.

As an alternative, the positioning part comprises two positioning parts, and the two positioning parts are flush towards the end face of the gum penetrating part.

In the technical scheme, the screw cap drives the central screw to rotate, so that the screw driver is prevented from being used for dismounting the central screw and the implant.

The transfer set can be used for both windowed and closed-window impressions.

The screwing and unscrewing of the central screw does not depend on a screwdriver any more, so that the screw is suitable for more complex conditions such as small opening degree and the like, and the range of applicable patient population is wider.

When the transfer body is mounted on the hard impression, the central screw is in rigid butt joint with the screw cap, so that the accuracy of resetting is ensured, and the accuracy of a window-closing impression method is improved.

The setting of location portion has increased the mark point of being convenient for discern whether the transfer body is reset completely, has guaranteed the accuracy that the transfer body reset, can improve the precision of window-closing die method.

Drawings

FIG. 1 is a schematic overall construction of an embodiment;

FIG. 2 is a schematic view of the structure of a center screw in one embodiment;

FIG. 3 is a schematic view of an exploded structure of a screw cap and a center screw along a third direction in an embodiment;

FIG. 4 is a schematic diagram of the structure of a transfer body in one embodiment;

fig. 5 is a schematic structural view of a screw cap provided with a second hole in one embodiment.

1. A transfer body; 11. a first hole; 12. a main body portion; 13. a gingival penetration portion; 14. a positioning part; 2. a central screw; 21. a threaded end; 22. a clamping groove; 23. a groove; 3. a screw cap; 31. a cap body; 32. a fan blade group; 321. a fan blade; 33. a clamping hole; 34. and a second hole.

Detailed Description

The present application is further described in detail below by way of the accompanying drawings and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.

Embodiments of the present application disclose a planting stamp transfer assembly. After the tray is connected and fixed with an implant implanted in a human mouth cavity, carrying out impression operation on the tray with the impression material, taking out the tray, the impression model after hardening and the impression transfer assembly after hardening the impression material, and finishing impression taking; after the impression transfer set is connected to the impression model, it is sent to a laboratory for subsequent preparation of the dental crown. The implant is not shown in the drawings.

It should be noted that the implant in this embodiment is mainly located in the oral cavity near the tongue root, i.e., the molar position, and of course, the implant in the incisor position may also be used.

Referring to fig. 1, the implant stamp transfer assembly includes a transfer body 1, a center screw 2, and a screw cap 3; wherein the transfer body 1 is provided with a first hole 11; the central screw 2 comprises a threaded end 21, the threaded end 21 passing through and protruding out of the first hole 11 for screwing with the implant to compress and fix the transfer body 1 with the implant.

The screw cap 3 comprises a cap body 31 and a fan blade set 32; wherein, the fan blade group 32 is fixed on the outer side of the cap 31; the cap 31 is detachably clamped and fixed with one end of the central screw 2 far away from the threaded end 21.

For convenience of description, a first direction, a second direction and a third direction are defined, wherein the first direction is a direction from a tongue root to a tongue tip when the implant is implanted in a human oral cavity, the second direction is a direction from a cheek side to a tongue side of a gum when the implant is implanted in the human oral cavity, and the third direction is a length direction of the central screw 2. In the drawings, a first direction is denoted as X direction, a second direction is denoted as Y direction, and a third direction is denoted as Z direction.

In the impression operation, the implant, the transfer body 1, the center screw 2, and the screw cap 3 are sequentially disposed in the third direction. The upper end of the implant along the third direction is provided with an internal threaded hole, and the first hole 11 on the transfer body 1 is a hole penetrating through the transfer body 1 along the third direction.

Referring to fig. 2, the threaded end 21 of the central screw 2 passes through and protrudes out of the first hole 11 to be in threaded connection with an internally threaded hole in the implant, and the central screw 2 compresses and fixes the transfer body 1 to the implant. Illustratively, the first hole 11 is a step hole, the central screw 2 is provided with a shaft shoulder, and when the central screw 2 is connected with the implant, the shaft shoulder of the central screw 2 is pressed against the step surface of the first hole 11, so that the transfer body 1 is pressed and fixed on the implant. Optionally, the first hole 11 is a round hole, a shaft shoulder is arranged on the central screw 2, and when the central screw 2 is connected with the implant, the shaft shoulder of the central screw 2 is tightly pressed with the end surface of the transfer body 1, which is far away from the implant, so that the transfer body 1 is tightly pressed and fixed on the implant.

Referring to fig. 3, the screw cap 3 includes a cap body 31 and a fan blade group 32; wherein, the fan blade group 32 is fixed on the outer side of the cap 31; the cap 31 is detachably clamped and fixed with one end of the central screw 2 far away from the threaded end 21.

After the cap 31 is clamped and fixed with the central screw 2, when the fan blade group 32 is stirred to rotate around the third direction, the cap 31 and the fan blade group 32 synchronously rotate around the third direction; because the cap body 31 is clamped with the central screw 2, the cap body 31 drives the central screw 2 to rotate around the third direction, and the central screw 2 rotates to be connected with or detached from the implant.

In the present embodiment, when the cap 31, the fan blade 321, and the central screw 2 rotate along the third direction, the axis of rotation is the center line of the central screw 2.

In the prior art, a screwdriver is used for installing the central screw 2, the mouth of a patient is required to have larger opening degree, and when the opening degree of the patient is small, a doctor is difficult to operate; and there is the risk that the patient swallows by mistake and aspiration by mistake caused by the appliance slipping off.

The screw cap 3 drives the central screw 2 to rotate through the screw cap 3, so that the screw driver is prevented from being used for disassembling and assembling the central screw 2 and the implant.

The screw cap 3 is sleeved at the tail end of the central screw 2, and the fan blade-shaped design of the screw cap 3 enables the transfer component to be applied to a window-opening type impression method and a window-closing type impression method. The screwing and unscrewing of the central screw 2 is not dependent on a screwdriver, so that the screw is suitable for more complex conditions such as small opening degree and the like, and the range of applicable patient population is wider.

The rigid abutment of the central screw 2 with the screw cap 3 increases and ensures the accuracy of the resetting when the transfer body 1 is mounted to a hard impression.

Referring to fig. 3, as an alternative, the fan blade group 32 includes at least two fan blades 321, and the two fan blades 321 are circumferentially spaced apart along the cap 31.

Specifically, the fan blade set 32 includes six fan blades 321, and the six fan blades 321 are disposed on the sidewall of the cap 31 at equal intervals. The cap 31 in this embodiment is a cylindrical member. Optionally, the fan blade set 32 includes two, three, four or seven fan blades 321.

The fan blade 321 is shaped according to the need, and illustratively, the fan blade 321 includes a square plate fixed to the side wall of the cap 31 and a semicircular plate fixed to the end of the square plate away from the cap 31.

The blade 321 is acted upon by a hand-held screwdriver or by other means to rotate the screw cap 3, illustratively the screwdriver pushing the blade 321 to rotate the blade 321.

Referring to fig. 1, as an alternative, the surface of the blade 321 is provided with anti-slip patterns.

The anti-skid patterns are not shown in the drawings, and the arrangement of the anti-skid patterns can increase the resistance of the screwdriver or by means of other instruments when the screwdriver contacts with the fan blades 321, reduce the occurrence of the relative sliding between the screwdriver or by means of other instruments and the fan blades 321, and further facilitate the rotation of the central screw 2 by a doctor.

Referring to fig. 1, as an alternative, the anti-slip pattern is provided at an end of the blade 321 remote from the cap 31.

The farther the anti-skid pattern is from the cap 31, the smaller the driving force applied to the screwdriver or other instruments is when the screwdriver or other instruments are in contact with the anti-skid pattern of the fan blade 321, and the direction of the driving force is easy to control, so that the doctor can conveniently operate the screwdriver or other instruments.

Referring to fig. 5, as an alternative, the fan blade 321 is provided with a second hole 34. Specifically, the second hole 34 is a circular hole, and the second hole 34 penetrates through two ends of the thickness of the fan blade 321. Illustratively, each of the fan blades 321 is provided with a second hole 34, and optionally, the fan blades 321 are provided with a plurality of second holes 34.

The second hole 34 is arranged, when the die transfer assembly is used for a windowed die, the fan blade 321 is connected with the string through the second hole 34, and the other end of the string is positioned outside the oral cavity, so that the risk of the screw cap 3 being swallowed by mistake is further reduced. When the stamp transfer assembly is used for a window stamp, the stamp material in the tray can enter the second hole 34, and after the stamp material is hardened, the connection between the screw cap 3 and the hardened stamp material is more stable, thereby improving the accuracy of the reinstallation of the center screw 2 onto the screw cap 3.

In other embodiments, the blade 321 is provided with a groove.

Referring to fig. 3, as an alternative, the end of the central screw 2 remote from the threaded end 21 is provided with a clamping groove 22. The cap 31 is provided with a clamping hole 33, and the clamping hole 33 accommodates one end of the central screw 2 provided with a clamping groove 22 for being detachably clamped and fixed with the central screw 2.

Specifically, the clamping groove 22 is a hexagonal groove arranged at one end of the central screw 2 away from the threaded end 21, and the clamping groove 22 is located outside the central screw 2.

The clamping hole 33 on the cap body 31 is a hexagonal hole matched with the clamping groove 22.

After aligning the clamping hole 33 on the cap body 31 with the clamping groove 22 of the central screw 2 along the third direction, the cap body 31 is moved along the third direction, so that the clamping hole 33 is matched with the clamping groove 22, and the clamping and fixing of the cap body 31 and the central screw 2 are realized. At this time, the cap 31 is driven to rotate around the third direction, and the cap 31 drives the center screw 2 to rotate around the third direction. When an action in a third direction away from the center screw 2 is applied to the cap 31, the cap 31 is separated from the center screw 2.

Further, the clamping holes 33 penetrate through two ends of the cap body 31 along the third direction, when the cap body 31 moves along the third direction, the cap body 31 can be completely sleeved outside the clamping groove 22, the contact area between the cap body 31 and the central screw 2 is large, and the cap body 31 and the central screw 2 are connected stably.

Further, a chamfer is formed at one end of the clamping hole 33, and the screw cap 3 is conveniently sleeved on the clamping groove 22 due to the chamfer.

Referring to fig. 3, as an alternative, the end of the central screw 2 remote from the threaded end 21 is provided with a recess 23, the recess 23 being intended to cooperate with a screwdriver. The groove 23 is located inside the clamping groove 22.

Specifically, the central screw 2 is provided with a groove 23, the groove 23 is matched with a screwdriver, and the groove 23 is a hexagonal groove and the screwdriver adopts an inner hexagonal tool bit.

The central screw 2 is driven to rotate about a third direction by a screwdriver inserted into the recess 23. In some cases, the connection between the central screw 2 and the implant can be made using a screwdriver, as required.

In other embodiments, the cap 31 is not provided with the clamping hole 33, and the cap 31 is provided with a protruding column, and the protruding column extends into the groove 23 to clamp and fix the cap 31 and the central screw 2.

Referring to fig. 4, as an alternative, the transfer body 1 includes a main body portion 12, a gum penetrating portion 13, and a positioning portion 14; wherein the gingival penetration portion 13 is fixed at one end of the main body portion 12.

The positioning portion 14 is fixed to a side wall of the main body portion 12 and is located at an end of the main body portion 12 where the gum penetrating portion 13 is provided, for contact with gums.

Specifically, the main body 12 is a hexagonal cylinder having a length along the third direction. The gum penetrating part 13 is a conical piece fixed at the end part of the main body part 12 along the third direction, one end of the gum penetrating part 13 facing the main body part 12 is a big head end, one end of the gum penetrating part 13 facing away from the main body part 12 is a small head end, and the gum penetrating part 13 is connected with the inner structure of the implant.

The positioning portion 14 is fixed to a side wall of the main body portion 12, and when the gum penetrating portion 13 is extended to the implant setting position, the positioning portion 14 is in contact with the gum.

The larger the area of the positioning portion 14 in contact with the gum, the more stable the positioning portion 14 supports the main body portion 12; since the gums in the oral cavity of the person approach the plane at the end of the implant in the first direction, the positioning portions 14 should be arranged as much as possible in the first direction when the transfer body 1 is placed on the implant.

The positioning part 14 increases the mark point which is convenient for identifying whether the transferring body 1 is completely reset or not when the transferring body 1 is mounted on the hard and firm impression, ensures the accuracy of resetting and can improve the accuracy of a window-closing impression method.

Further, the main body 12, the gum penetrating portion 13, and the positioning portion 14 are integrally formed.

Further, the transfer body 1 further comprises an implant interface, and when the transfer body 1 is installed with the implant along the third direction, the implant is matched with the implant 1 interface, so that the stability of connection between the transfer body 1 and the implant is kept.

Referring to fig. 4, as an alternative, the positioning portion 14 includes at least two positioning members that are circumferentially spaced along the main body portion 12.

Illustratively, the positioning member is a bar-shaped member secured to a side wall of the main body portion 12; alternatively, the positioning member is a plate member fixed to the side wall of the main body portion 12.

The positioning member contacts the gingiva in the third direction toward the end face of the gingiva penetrating portion 13. The positioning member has a smaller dimension in the first direction, and a gum portion in contact with the positioning member can be regarded as a plane.

Illustratively, the detent 14 includes two detents; alternatively, the detent 14 includes three, four, five, six, or other numbers of detents.

The greater the number of positioning members, the greater the angle between two adjacent positioning members along the circumferential direction of the main body 12, and the more stable the positioning members support the main body 12.

In other embodiments, the positioning portion 14 includes only one positioning member.

Referring to fig. 4, as an alternative, the main body 12 is a regular hexagonal member; the positioning part comprises two positioning pieces which are respectively positioned on two opposite side walls of the main body part 12.

Specifically, when the gingival penetration portion 13 is connected to the implant, the two positioning pieces are disposed along the first direction, that is, the length direction of the positioning pieces toward the end face of the gingival penetration portion 13 is disposed along the first direction.

In other embodiments, the cross-section of the main body 12 is regular tetragonal, regular octagonal; the positioning members are located on opposite side walls of the main body 12. One positioning piece is correspondingly arranged on any side wall of the main body 12.

In other embodiments, the cross-section of the body portion 12 may be determined according to design requirements, such as cylindrical, oval.

Referring to fig. 4, as an alternative, the positioning portion 14 includes two positioning pieces that are flush toward the end face of the gum penetrating portion 13.

Specifically, the end face of the positioning member facing the gingival penetration portion 13 in the third direction is flush with the end face of the gingival penetration portion 13 facing the main body portion 12 in the third direction.

Alternatively, the positioning portion 14 includes two positioning pieces having a height difference toward the end face of the gum penetrating portion 13. When the heights of gums at both ends of the implant in the first direction are different in the oral cavity of a part of the patient, the positioning portion 14 can still satisfy the positioning requirement.

Further, the main body 12 is hexagonal, the positioning portion 14 includes six positioning members, and the two positioning members are disposed on the side wall of the main body 12 in a one-to-one correspondence manner. Wherein, the terminal surface parallel and level of two opposite setting element towards passing gum portion 13, the terminal surface difference in height of two opposite setting element towards passing gum portion 13 is 1 millimeter, and the terminal surface difference in height of two opposite setting element towards passing gum portion 13 is 2 millimeters.

The specific operations of the impression taking include preparing a tray, mounting the transfer body 1, taking out the impression, and the specific use will be described below.

Preparing a tray, and selecting a proper tray according to the opening degree of a patient and the repairing tooth position. Additional prefabricated fenestrations are required for the fenestration die rule.

The transfer body 1 is installed, and the transfer body 1 with proper diameter and height is selected to be installed on the oral cavity implant in a butt joint way, so that two positioning pieces on the same plane are respectively contacted with gums in the mesial and distal directions, namely the gums at the two ends of the implant along the first direction.

After the central screw 2 is screwed by the hand-held screwdriver and fixed, the screw cap 3 is sleeved at the tail end of the central screw 2. For patients with small opening degree, after the transfer body 1 is well connected, the screw cap 3 is sleeved on the tail end of the central screw 2, then the round tip of the needle holder or other instruments is abutted on the anti-skid threads on the edge of the fan blade 321 of the screw cap 3, and the screw cap 3 is rotated clockwise to screw the central screw 2, so that the transfer body 1 is fixed.

Taking a mold and a window-opening type impression method: the impression material is mixed and placed on the tray and pressed on the dental column, so that the tail ends of the screw cap 3 and the central screw 2 completely penetrate out of the window holes prefabricated on the tray, after the impression material is hard-fixed, the screw cap 3 is rotated anticlockwise by using a hand-held screw driver or by other instruments, the central screw 2 is unscrewed, and the transfer assembly, the hard impression material and the tray are taken down together, so that the impression material is taken out.

Window-closing impression method: the impression material is mixed and placed on the tray to be pressed on the dental column, so that the screw cap 3 is completely or mostly buried in the impression material, and after the impression material is hard-set, the impression is directly taken down, so that the screw cap 3 is separated from the transfer body 1 fixed in the oral cavity. After that, the central screw 2 is unscrewed, the transfer body 1 is taken down, the transfer body 1 is reset into the impression material according to the hole left in the impression material by the positioning piece, and the lower end of the screw cap 3 is butted in place, so that the impression taking is completed.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are based on the directions or positional relationships in the working state of the present application, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless explicitly specified and limited otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The present application has been described in connection with the preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On the basis of this, many alternatives and improvements can be made to the present application, which fall within the scope of protection of the present application.

Claims (10)

1. A planting impression transfer unit, which is characterized by comprising a transfer body, a central screw and a screw cap; wherein,

the transfer body is provided with a first hole;

the central screw comprises a threaded end, and the threaded end penetrates through and extends out of the first hole and is used for being in threaded connection with an implant to fix the transfer body and the implant in a compressed mode;

the screw cap comprises a cap body and a fan blade set; wherein,

the fan blade group is fixed on the outer side of the cap body;

the cap body and one end of the central screw, which is far away from the threaded end, are detachably clamped and fixed.

2. The implant stamp transfer assembly of claim 1, wherein the set of blades comprises at least two blades circumferentially spaced along the cap.

3. The implant stamp transfer assembly of claim 2, wherein said fan blade surface is provided with anti-slip features.

4. The implant stamp transfer assembly of claim 2, wherein said fan blade is provided with a second aperture.

5. The implant stamp transfer assembly of claim 1, wherein an end of said central screw remote from said threaded end is provided with a clamping groove;

the cap body is provided with a clamping hole, and the clamping hole accommodates one end of the central screw, which is provided with a clamping groove, and is used for being detachably clamped and fixed with the central screw.

6. The implant stamp transfer assembly of claim 5, wherein an end of said central screw remote from said threaded end is provided with a recess for engagement with a screwdriver;

the groove is positioned at the inner side of the clamping groove.

7. The implant stamp transfer assembly of any of claims 1 to 6, wherein the transfer body comprises a main body portion, a gingival penetration portion, and a positioning portion; wherein,

the gum penetrating part is fixed at one end of the main body part;

the positioning part is fixed on the side wall of the main body part and is positioned at one end of the main body part, which is provided with the gum penetrating part, and is used for contacting with gum.

8. The implant stamp transfer assembly of claim 7, wherein the positioning portion comprises at least two positioning members circumferentially spaced along the body portion.

9. The implant stamp transfer assembly of claim 8, wherein said body portion is a regular hexagon;

the positioning part comprises two positioning pieces, and the two positioning pieces are respectively positioned on two opposite side walls of the main body part.

10. The implant impression transfer assembly of claim 8, wherein the positioning portion comprises two positioning members, the two positioning members being flush with an end face of the gingival penetration portion.