JP2007215912A - Instrument for operation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument for maxillary sinus bottom elevation capable of shortening a tooth regeneration healing period by improving the safety and certainty of the fracture elevation of the maxillary sinus bottom bone in an maxillary sinus bottom elevation operation when embedding a dental implant in a maxillary posterior tooth part in order to perform a tooth regeneration operation when the tooth of the maxillary posterior tooth part is lost. <P>SOLUTION: A hole (5) for resonance opened to a hammering part (6) is provided. Further, the shape of the cross section vertical to the axial direction of the hole (5) for the resonance can be changed to be circular, elliptic or polygonal, be the same or different at different depths, or be similarly different at the different depths. Further, the inner side face of the hole (5) for the resonance may be a rotating surface which has a straight line as a rotary axis or an arbitrarily inclined curved surface. Further, the plurality of holes (5) for the resonance may be provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In particular, the present invention applies an artificial tooth root to the maxillary molar part as a tooth regeneration method when tooth is removed due to tooth contact, periodontal disease or orthodontics, or tooth extraction for treatment. In particular, the present invention relates to a maxillary sinus floor elevation device used for maxillary sinus floor elevation when the maxillary molar portion is deficient in bone height due to bone resorption or the like.

  In cases where the bone height of the maxillary molar portion is insufficient with respect to the artificial tooth root embedded in the maxilla, it is necessary to perform maxillary sinus floor elevation, for example, in US Pat. No. 5,961,329 Describes an artificial tooth root and a method for forming the artificial tooth root bed.

  FIG. 2 is a cross-sectional view showing a state in which the maxillary sinus floor elevation is performed. 3 and 4 are perspective views showing a conventional maxillary sinus floor elevation instrument.

  As shown, the portion of the maxilla (13) where the artificial root bed (8) is to be formed is compared to the portion of the maxilla (13) where the crown (14) and root (15) are healthy. The bone height of the maxillary molar portion may be insufficient.

  As an example of a conventional instrument for raising the maxillary sinus floor, the end is flat or spherical from the distal end (1) of the device via the bend (2) and bend (3). The instrument handle (17) provided with the striking portion (18) is integrally formed. An instrument tip recess (7) is formed in the instrument tip (1). Such an instrument for raising the maxillary sinus floor is described in, for example, Japanese Patent Application Laid-Open No. 2003-199773.

  When performing maxillary sinus floor elevation, for example, using an implant drill as described in JP-T-2003-84426, the artificial tooth root bed (8) is attached to the maxilla (13). Perforation is performed with the maxillary sinus floor bone (9) left thin. Thereafter, the instrument tip (1) is inserted into the artificial tooth root bed (8), and the hammering portion (18) is hammered with a hammer (not shown) so that the maxilla (13) penetrates circularly. The bone is broken and raised into the maxillary sinus (16) together with the maxillary sinus mucosa (11). Therefore, the maxillary sinus floor bone (9) reaches the position of the maxillary sinus floor bone (10).

  Thereafter, the bone filling material (12) is filled.

  However, the adjustment of striking the striking portion (18) has to rely on the experience and feeling of the surgeon, and there is a problem that the maxillary sinus mucosa (11) may be breached.

  In addition, there is a gap between the sensation of the hand when the maxilla (13) does not reach a fracture and it is just beaten, and the sensation of the hand when the maxilla (13) fractures so that it penetrates in a circle. There was no big difference, and therefore, there was a problem that it was difficult for the surgeon to detect the change that occurred in the hit feeling felt through the hit portion (18).

  As described above, the operation of the maxillary sinus floor raising operation requires a great deal of time, and a high level of skill is required of the operator.

US Pat. No. 5,961,329

JP 2003-199773 A

Special table 2003-84426 gazette

  The object of the present invention is to perform tooth regeneration when a tooth is missing in the maxillary molar part. Therefore, in the maxillary sinus floor raising operation when an artificial root is embedded in the maxillary molar part, It is an object of the present invention to provide a maxillary sinus floor elevation device that can shorten the period of tooth regeneration and healing by improving the reliability and reliability.

  The surgical instrument for use in the maxillary sinus floor elevation operation of the present invention has a handle and a distal end, and the bone is rounded by the distal end by striking the striking portion provided at the end of the handle. This is a surgical instrument used for a surgical operation that fractures the bone so as to penetrate through, and includes a resonance hole that opens in the striking portion and extends in the axial direction of the handle.

  Furthermore, it is desirable that the shape of the cross section perpendicular to the axial direction of the resonance hole is a circle, an ellipse or a polygon.

  Furthermore, it is desirable that the shape of the cross section perpendicular to the axial direction of the resonance hole is the same or different at different depths.

  Furthermore, it is desirable that the shape of the cross section perpendicular to the axial direction of the resonance hole is similar at different depths.

  Furthermore, it is desirable that the inner surface of the resonance hole is a rotating surface having a straight line as a rotation axis, or a curved surface that is arbitrarily inclined.

  Furthermore, it is desirable that there are a plurality of resonance holes.

  Note that the present invention can be applied to maxillary sinus bottom elevation and surgical instruments in the orthopedic field in which bone fractures so that the bone penetrates in a circular shape.

  By using the maxillary sinus floor elevation device of the present invention for maxillary sinus floor elevation, it is possible to raise the maxillary sinus floor bone safely and accurately, and as a result, the operation time can be shortened and to the patient. Can reduce physical and mental burdens, and can also reduce costs.

  The present invention will be described with reference to the drawings.

  FIG. 1 is a partially broken perspective view showing an embodiment of the maxillary sinus floor elevation device of the present invention.

  The maxillary sinus floor elevation surgical instrument of the present invention is a striking part having a planar shape or a spherical shape at the end part from the instrument tip part (1) via the bent part (2) and the bent part (3). Up to the instrument handle (4) provided with 6) is integrally formed. The hitting portion (6) is provided with a resonance hole (5) opened in a hitting portion in order to resonate the hitting sound at the time of hitting. Further, without providing the bent portion (2) and the bent portion (3), the instrument tip (1) to the instrument handle (4) may be configured linearly or curvedly. Absent.

  Moreover, what is necessary is just to select the material of an instrument handle (4) from a well-known metal, an alloy, a synthetic resin, etc., For example, titanium or a titanium alloy can be illustrated.

  Further, the shape of the cross section perpendicular to the axial direction of the resonance hole (5) may be a circle, an ellipse, or a polygon, or may be the same or different at different depths, or may be different at different depths. Thus, it can be changed within the gist of the present invention. Further, the inner side surface of the resonance hole (5) may be a rotation surface having a straight line as a rotation axis, or may be a curved surface that is arbitrarily inclined, and there are a plurality of resonance holes (5). Also good. Therefore, the shape and the number of the resonance holes (5) are determined so that the change in the emitted sound can be easily identified.

  When performing maxillary sinus floor elevation using the instrument for maxillary sinus floor elevation of the present invention, as shown in FIG. 2, the artificial tooth root bed (8) with respect to the maxilla (13) as shown in FIG. ), And the maxillary sinus floor bone (9) is left thin. Thereafter, the instrument tip (1) is inserted into the artificial tooth root bed (8), and the striking portion (6) is beaten with a scissors (not shown) so that the maxilla (13) penetrates circularly. The bone is broken and raised into the maxillary sinus (16) together with the maxillary sinus mucosa (11). Therefore, the maxillary sinus floor bone (9) reaches the position of the maxillary sinus floor bone (10).

  Thereafter, the bone filling material (12) is filled.

  Therefore, the maxillary bone (13) does not reach a fracture and resonates at the moment when the fracture occurs so that the maxillary bone (13) penetrates in a circle and the sound emitted from the resonance hole (5) when it is just beaten. There is a clear difference between the sound emitted from the working hole (5), and such a change in sound makes it easy to end the striking at the moment when the maxilla (13) breaks.

  In addition to the maxillary sinus floor elevation, the present invention can be used for a surgical operation in which a bone is fractured by penetrating the bone in a circular shape. For example, the present invention can be applied to a surgical operation in the field of orthopedics. is there.

It is a partially broken perspective view which shows one Example of the maxillary sinus floor raising instrument of this invention. It is sectional drawing which shows the state which performs maxillary sinus floor raising operation. It is a perspective view which shows the conventional instrument for raising the maxillary sinus floor. It is a perspective view which shows the conventional instrument for raising the maxillary sinus floor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument tip part 2, 3 Bending part 4, 17 Instrument handle 5 Resonance hole 6, 18 Striking part 7 Instrument tip recessed part 8 Artificial root bed 9, 10, Maxillary sinus floor bone 11 Maxillary sinus mucosa 12 Bone filling material 13 Maxilla 14 crown 15 root 16 maxillary sinus

Claims (7)

  A surgical instrument having a handle and a distal end, and used for a surgical operation to fracture the bone so that the bone penetrates circularly by the distal end by striking a striking portion provided at the end of the handle, A surgical instrument comprising a resonance hole that opens in the striking portion and extends in the axial direction of the handle.   The surgical instrument according to claim 1, wherein a shape of a cross section perpendicular to the axial direction of the resonance hole is a circle, an ellipse, or a polygon.   The surgical instrument according to claim 1 or 2, wherein the shape of a cross section perpendicular to the axial direction of the resonance hole is the same or different at different depths.   The surgical instrument according to any one of claims 1 to 3, wherein a shape of a cross section perpendicular to the axial direction of the resonance hole is different at different depths.   The surgical instrument according to any one of claims 1 to 4, wherein an inner surface of the resonance hole is a rotation surface having a straight line as a rotation axis, or a curved surface that is arbitrarily inclined.   The surgical instrument according to claim 1, wherein a plurality of the resonance holes are provided.   The surgical instrument according to any one of claims 1 to 6, wherein the surgical instrument is used for maxillary sinus floor elevation.

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