Soft tissue transplantation girdling drill for oral implantation

Abstract

The utility model relates to a soft tissue transplantation girdling drill for oral implantation. The girdling drill comprises a central girdling knife and an outer girdling knife which are coaxially arranged, wherein blade-shaped heads are arranged at the tail ends of the same sides of the central ring cutter and the outer ring cutter, and the tail ends of the same sides of the central ring cutter and the outer ring cutter are hollow tubular, so that the central ring cutter and the outer ring cutter can jointly cut and provide annular soft tissues. The ring cutter provided by the utility model is simple to operate, the difficulty of closing the wound surface is greatly reduced, and the requirement of closing the wound surface in an operation area is basically met by suturing the ring cutter with surrounding soft tissues.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a kind of soft tissue transplantation ring cutting drill for oral implantation. BACKGROUND

[0002] Tooth loss has become one of the main oral diseases that plague residents' health. According to incomplete statistics, 86.1% of the elderly are deeply troubled by tooth loss, which seriously affects their masticatory function and physical health. Oral implantation repair has the characteristics of small volume of prosthesis in the mouth, no damage to adjacent teeth, similar chewing sensation to natural teeth, high comfort and other characteristics, and has become one of the main repair methods for tooth loss. Soft tissue defect is a common and complex problem in the field of oral implantation, especially in aesthetic implantation sites. This problem is particularly prominent. Soft tissue defect can be caused by a variety of factors such as tooth loss, alveolar bone resorption, trauma, post-extraction trauma, disease or surgical complications, and ultimately has an adverse effect on the long-term stability and aesthetic effect of the implant. The degree and type of soft tissue defect are diverse, from mild soft tissue defect to severe complex defect. In the aesthetic key area, these defects not only affect the oral health of patients, but also significantly affect the appearance and self-confidence of patients. If soft tissue defect is not properly treated, it may lead to implant failure or unsatisfactory aesthetic results, such as failure to form a healthy gum cuff around the implant, failure to maintain coordination and aesthetics with adjacent natural tooth gum, accumulation of plaque around the implant, increased incidence of peri-implantitis, and resorption of implant marginal bone. These problems and complications will have a negative impact on the long-term stability and function of the implant.

[0003] Currently, the methods for treating soft tissue defect include soft tissue transplantation, guided bone regeneration (GBR) technology, and transplantation using biological membrane products. Soft tissue transplantation is the most common and effective treatment method and the gold standard for treating soft tissue defect. Soft tissue transplantation increases the quality and quantity of soft tissue by transplanting keratinized gingiva or connective tissue from the maxillary tuberosity area or maxillary palate, widens the keratinized gingiva, and achieves the purpose of compensating for the defect. However, the current acquisition of autologous soft tissue mostly relies on the doctor to cut the soft tissue with a surgical knife and then trim it. The transplantation of connective tissue often makes an envelope incision on the palate, which has relatively high technical sensitivity and often cuts off the mucosal layer of the donor area. The transplantation of free gingival flap with mucosa full layer cannot be directly sutured due to the large exposure of the donor site, and the exposure of the wound causes obvious postoperative pain, making patients afraid of this surgical procedure.

[0004] Therefore, it is urgent to find a minimally invasive, efficient and simple soft tissue transplantation device or method for repairing soft tissue defects in oral implantation. However, the devices used in the clinic cannot meet the needs of the actual operation, and there is still no corresponding surgical device to fill this gap in China. Utility model content

[0005] To solve the problems in the prior art, the utility model provides a soft tissue transplantation trepanning drill for oral implantation, which can minimally invasively cut soft tissue with keratinized gingiva in the palatal region or maxillary tubercle region, reduces the technical threshold of cutting with a surgical knife, and can retain a 3mm wide soft tissue column at the center position as a suture base, so that the wound can be basically closed after suture, and postoperative pain caused by wound retention is greatly reduced.

[0006] The utility model discloses a soft tissue transplantation trepanning drill for oral implantation, which comprises coaxially arranged central trepanning knives and outer trepanning knives. The central trepanning knives and the outer trepanning knives are provided with blade-shaped heads on the same side of the end, and the end is provided with a (concentric) hollow pipe, so that the soft tissue can be cut and provided. Therefore, the heads of the central trepanning knives and the outer trepanning knives are basically in the same plane, and the blade-shaped heads can cut the soft tissue, and the obtained ring-shaped soft tissue can be expanded to obtain a soft tissue flap with keratinized gingiva. The mucosa around the supply area is sutured to the mucosa column (preferably 3mm) at the center by suture, so that the wound is closed, the difficulty of wound closure is greatly reduced, and the postoperative pain of the patient is reduced. Preferably, the diameter of the blade-shaped head (hollow pipe) of the central trepanning knife is 3mm.

[0007] Further, the tubular outer wall of the outer trepanning knife is provided with through holes for taking out the cut soft tissue and / or cooling water to the operation area to achieve cooling; then a small-head scoop is used to dig out the cut soft tissue ring. Preferably, six longitudinal through holes are arranged on the outer wall of the outer trepanning knife.

[0008] Further, the central trepanning knives and the outer trepanning knives are detachably connected.

[0009] Preferably, the central trepanning knife is provided with an outwardly extending circular table, which cooperates with the corresponding inner surface of the outer trepanning knife to realize detachable connection. More preferably, the circular table and the inner surface of the outer trepanning knife are detachably connected through buckle setting.

[0010] The outer trepanning knife is provided with at least two hook portions on the inner surface of the distal end, which can cooperate with the corresponding clamping groove or convex portion on the outer surface of the circular table to realize clamping.

[0011] In the embodiment of the center ring cutter setting a circular table, the center ring cutter also has a drill handle extending beyond the circular table as the handle of the whole ring cutter drill, which can be adapted to the implant handset socket or slow handset socket on the market to provide power for drilling soft tissue through the handset motor.

[0012] Alternatively, an inwardly extending connecting table can be provided at the distal end of the outer ring cutter for detachable connection with the corresponding outer surface of the center ring cutter. Preferably, the connecting table and the outer surface of the center ring cutter are detachably connected by means of a buckle such as described above.

[0013] In the embodiment of the outer ring cutter connecting table, the length of the center ring cutter is greater than that of the outer ring cutter, and the drill handle of the center ring cutter serves as the drill handle of the whole ring cutter drill, which can be adapted to the implant handset socket or slow handset socket on the market to provide power for drilling soft tissue through the handset motor.

[0014] Compared with the prior art, the soft tissue transplantation ring cutter for oral implantation has the beneficial effects that: the bilateral concentric ring cutter is used to cut ring-shaped soft tissue, and the soft tissue flap with keratinized gum can be obtained by cutting and expanding, the operation is simple, the mucosa column of 3mm is reserved in the surgical area, the difficulty of closing the wound surface is greatly reduced, and the requirement of closing the wound surface of the surgical area is basically met through suturing with the surrounding soft tissue. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification of this utility model form a part thereof, serve to provide further understanding of the utility model, and together with the specification explain the utility model. The use of the same reference numerals in different drawings and / or in the specification indicates same or similar components.

[0016] Figure 1 is a three-dimensional structure schematic view of an example of the soft tissue transplantation ring cutter for oral implantation of the utility model.

[0017] Figure 2 is Figure 1 is a structure schematic view of the center ring cutter of the soft tissue transplantation ring cutter for oral implantation of the utility model.

[0018] Figure 3 is Figure 1 is a structure schematic view of the outer ring cutter of the soft tissue transplantation ring cutter for oral implantation of the utility model.

[0019] Figure 4 is Figure 3 is a cross-sectional schematic view of the outer ring cutter.

[0020] In the attached diagram: 1. Central ring cutter; 2. Outer ring cutter; 3. Hook; 4. Blade-shaped head of the central ring cutter; 5. Blade-shaped head of the outer ring cutter; 6. Through hole; 7. Frustum; 8. Drill shank; 9. Snap-fit ​​protrusion. Detailed Implementation

[0021] The following detailed description of the present invention, “A soft tissue transplantation trephine for dental implantation,” will be further elaborated with reference to specific embodiments.

[0022] like Figures 1-4 As shown, this utility model provides a soft tissue grafting drill for dental implantation, including a central ring cutter 1 and an outer ring cutter 2. In this example, the outer ring cutter 2 is described as being entirely hollow and tubular. In practice, the connecting platform between the two can also be located on the inner side of the upper end of the outer ring cutter 2.

[0023] In this example, see Figure 2 The central circumferential cutting blade 1 is divided into three parts: a lower hollow tubular blade head with a central circumferential cutting edge 4 at the end, a middle truncated cone 7 for detachable connection, and an upper drill shank 8. Preferably, the diameter of the central circumferential cutting edge 4 is 3 mm, used to obtain a 3 mm mucosal column retained in the center of the surgical area. The outer surface of the truncated cone 7 is provided with 4-6 snap-fit ​​protrusions 9 that cooperate with the hooks 3 to achieve detachable connection.

[0024] In this example, see Figures 3-4 ( Figure 3 (The central blade is not shown). The outer ring cutter 2 is a hollow tubular / cylindrical shape with a circular outer ring cutter blade-shaped head 5 at the bottom. The outer ring cutter 2 is fixed to the central ring cutter 1 by engaging a hook 3 on the inner side of the upper end with a snap-fit ​​protrusion 9 on the outer surface of the frustum 7. There are 4-6 hooks 3. Preferably, 4-6 longitudinal through holes 6 are evenly distributed on the outer wall of the outer ring cutter 2 to facilitate operation, observation, removal of the cut soft tissue, and allow cooling water to reach the surgical area for cooling. A small-headed excavator is then used to remove the cut soft tissue ring. The annular soft tissue obtained by the combined cutting of the inner and outer ring cutters, once unfolded, yields a soft tissue flap with keratinized gingiva. The donor site is sutured to the surrounding mucosa and the central mucosal column to close the wound and reduce postoperative pain.

[0025] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0026] It should be understood that the orientation indications such as "upper", "middle", "lower", "inner", "outer surface" and the like described herein are divided in the direction of the device itself or the advancing direction of the example shown in the figure. It should be understood that in the scheme of the present application, the position indications such as up and down, inside and outside can be interchanged, and do not cause substantial limitation to the scheme.

Claims

1. A soft tissue graft trephine for oral implantation, characterised in that, The ring cutter comprises a coaxially arranged central ring cutter and an outer ring cutter; wherein the central ring cutter and the outer ring cutter are provided with blade-shaped heads on the same side end and the side end is provided as a hollow tube, so as to be able to cut together and thus provide ring-shaped soft tissue.

2. A soft tissue graft trephine drill for oral implantology according to claim 1, characterized in that The outer wall of the outer ring cutter is provided with a through hole for the removal of the cut soft tissue and / or the arrival of cooling water to the operation area.

3. The soft tissue graft trephine drill for oral implantation according to claim 1, wherein, The blade-shaped head of the central ring cutter has a diameter of 3 mm.

4. A punch for soft tissue grafting in oral implantology according to any one of claims 1 to 3, characterized in that The central ring cutter and the outer ring cutter are detachably connected to each other.

5. A punch for soft tissue grafting for oral implant according to claim 4, wherein The central ring cutter is provided with an outwardly extending circular table which cooperates with the corresponding inner surface of the outer ring cutter to achieve detachable connection.

6. A punch for soft tissue grafting for oral implant according to claim 5, wherein The circular table and the inner surface of the outer ring cutter are detachably connected through snap setting.

7. A punch for soft tissue grafting for oral implant according to claim 6, wherein The outer ring cutter is provided with at least two hook portions on the inner surface of the distal end which can cooperate with the corresponding clamping grooves or convex portions of the outer surface of the circular table to achieve clamping.

8. A punch for soft tissue grafting for oral implant according to claim 5, wherein The central ring cutter also has a drill handle extending beyond the circular table.

9. The soft tissue graft trephine drill for oral implantation according to claim 4, wherein, The distal end of the outer ring cutter is provided with an inwardly extending connecting table which cooperates with the corresponding outer surface of the central ring cutter to achieve detachable connection.

10. A punch for soft tissue grafting for oral implant according to claim 9, wherein The connecting table and the outer surface of the central ring cutter are detachably connected through snap setting.

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