JP5647493B2 - Osteotomy tool - Google Patents

Description

  The present invention relates to a bone cutting tool for cutting bone.

  For example, in the case of implant treatment performed in dentistry, when the site (bone) in which the artificial tooth root (implant) is embedded is cut for the purpose of flattening, or the bone amount (height or thickness) of the site in which the artificial tooth root is embedded is insufficient In some cases, an autologous bone is transplanted to the site, and therefore the autologous bone is removed.

  Therefore, conventionally, a bone cutter (hereinafter, a conventional example) for cutting bone has been proposed.

  In this conventional example, a blade plate is provided at the tip of a rod-shaped main body, and a bone storage case for storing bone cut by the blade plate is detachably provided in the vicinity of the blade plate. When it is held and the surface of the bone is scratched with the blade plate, the scraped bone is stored in the bone storage case.

  However, in the conventional example, when taking out the bone cut from the bone storage case in an actual operation site, the bone storage case has to be removed from the main body, which is troublesome, and the bone storage case is removed from the main body. At this time, there is a problem that a bone stored in the bone storage case may be accidentally spilled.

  The present invention provides an epoch-making osteotomy tool that solves the above-described problems and exhibits an unprecedented effect.

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

For cutting the bone 1, a blade plate 5 is suspended from the tip of the main body 3, and a slide body 4 having a storage space 7 formed so as to be able to come into contact with and separate from the blade plate 5 is provided. Then, when the slide body 4 was brought close to the blade plate 5, the main body 3 was moved and the bone 1 was cut by the blade 5 a provided at the tip of the blade plate 5. is configured such that the bone 1a is introduced into the receiving space 7, also, when brought near the sliding member 4 to the blade plate 5, in contact with the sliding member 4 abutting member 8 is the cutting plate 5 so that the abutting body 8 comes into contact with the slide body 4 to provide resistance to sliding movement of the slide body 4, and at the time of cutting the bone 1 with the blade 5a , configured elastic deformation is prevented in a direction away from the slide member 4 of the main body 3 It relates to a bone-cutting toggle and said being.

  Further, in the bone cutting tool according to claim 1, the distal end portion of the slide body 4 is provided in a cylindrical shape, and the distal end hole portion 6 of the slide body 4 is set in the storage space 7. The present invention relates to an osteotomy tool.

  The bone cutting tool according to any one of claims 1 and 2, wherein the slide body 4 is formed of a transparent synthetic resin member. is there.

  Further, in the bone cutting tool according to any one of claims 1 to 3, the main body 3 includes a base body 15 and a guide bar body 16 connected to the base body 15, and the guide bar body 16 includes The slide body 4 is fitted, and the base body 15 is an elongated body made of a synthetic resin.

  5. The osteotomy tool according to claim 1, wherein the abutment body 8 is engaged with the slide body 4 when the slide body 4 is brought close to the blade plate 5. The present invention relates to a bone cutting tool characterized in that a locking contact portion 4d is provided.

  Further, in the bone cutting tool according to any one of claims 1 to 4, the inner surface of the slide body 4 is contacted with the contact body 8 when the slide body 4 is brought close to the blade plate 5. The present invention relates to a bone cutting tool characterized by being set to a contacted part to be in contact.

Further, in the bone cutting tool according to any one of claims 1 to 6, a bone placement portion 11 on which the cut bone 1a is placed is provided on the inner surface of the distal end portion of the base body 15. , cutting bone wherein the bone discharge portion 13 for discharging the scraping bone 1a from the wall 12 and the front Symbol bone mount 11 is provided at the left and right positions of the bone mount 11 It relates to a fitting.

  Further, in the bone cutting tool according to any one of claims 1 to 7, the upper surface portion of the main body 3 is provided with a finger hooking convex portion 10 for gripping the main body 3 and hooking a finger. The present invention relates to a featured osteotomy tool.

  Since the present invention is configured as described above, unlike the conventional example described above, the operation of taking out the bone from the storage space in which the cut bone is stored can be performed easily and satisfactorily. It becomes an epoch-making osteotomy tool that is effective.

It is a perspective view which shows a present Example. It is a side view which shows a present Example. It is a sectional side view which shows a present Example. It is AA sectional drawing of FIG. It is sectional drawing of the principal part which concerns on a present Example. It is explanatory drawing of an implant treatment. It is use condition explanatory drawing of a present Example. It is use condition explanatory drawing of a present Example. It is explanatory drawing of an implant treatment.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  When the main body 3 is pulled backward while the slide body 4 is brought close to the blade plate 5 and the surface of the bone 1 is scratched by the blade 5a of the blade plate 5, the bone 1 is scraped. The scraped bone 1 a is stored in a storage space 7 formed by the slide body 4 through a gap between the slide body 4 and the blade plate 5.

  A specific embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, the blade 1 is scraped off, and a blade plate 5 is suspended from the distal end portion of the main body 3 and has a slide body 4 that can contact and separate from the blade plate 5. .

  Specifically, the main body 3 includes a base body 15 and a guide rod body 16 provided on the lower surface side of the base body 15. The main body 3 has a length of about 13.5 cm and a width of about 1 cm. Hand-held size. In this embodiment, the base body 15 and the guide rod body 16 are separated from each other. However, the base body 15 and the guide rod body 16 may be integrally formed. Further, as will be described later, the material is not limited to a synthetic resin and may be made of metal. As long as it exhibits, it can be appropriately adopted.

  The base 15 is an elongated body (plate-like body) formed of an appropriate synthetic resin member as shown in FIGS.

  Further, the base 15 is provided with hook-like pieces 15a suspended from the left and right edges on the front end side.

  As shown in FIG. 4, the left and right hook-shaped pieces 15a are engaged with recesses 4c provided on the right and left side surfaces of the slide body 4 to be described later to guide the slide movement of the slide body 4. It is.

  Further, the base 15 is provided with a finger hooking convex portion 10 for hooking a finger (forefinger) to be gripped.

  As shown in FIGS. 1 to 3, the finger-hanging convex portion 10 is provided in a protruding state on the top surface of the distal end side of the base body 15, and is a mountain in which an inclined portion 10 ″ is connected in the front-rear direction with the flange portion 10 ′ as a boundary. The inclined portion 10 ″ is formed with a protruding line 10a in the width direction, and the protruding line 10a is an anti-slip when the finger is put on.

  Further, a concave locked portion 15b is provided at the base end position of the lower surface of the base 15.

  This locked portion 15b is configured such that when the slide body 4 is brought close to the blade plate 5, a convex slide locking portion 4b provided at the base end portion of the slide body 4 is locked.

  Accordingly, when the slide locking portion 4b is locked to the locked portion 15b, the slide body 4 is locked to slide in the distal direction and the proximal direction. In addition, it is comprised so that resistance may arise also with the contact body 8 mentioned later with respect to the sliding movement to the base end side direction of the slide body 4 which adjoins the blade board 5. FIG.

  Further, the lower surface of the distal end portion of the base body 15 is formed as a flat surface, and this portion makes the base body 15 upside down (the lower surface faces upward) and the slide body 4 close to the blade plate 5 in the proximal direction. When it is slid and moved, it is configured to function as a bone placing portion 11 on which the cut bone 1a housed in the storage space 7 described later is placed.

Further, at the left and right positions of the bone placing portion 11, a bone discharging portion 13 for discharging the bone 1a cut from the wall portion 12 and the bone placing portion 11 is provided .

  Specifically, the wall portion 12 is constituted by a part of a metal plate material 17 constituting a blade plate 5 to be described later. The metal plate material 17 is connected to the upper surface of the tip end portion of the base body 15 and is connected to the left and right sides thereof. The rising piece 12 is formed by bending the edge downward at a right angle, and the rising piece 12 is provided on the lower surface of the base body 15 so as to protrude from the left and right edges of the bone placing portion 11.

  The bone discharging part may be configured by providing a notch or a window hole in the wall part 12, or the bone discharging part may be provided only on either the left or right side of the bone placing part 11. .

  In addition, a guide rod body 16 is connected to the base end portion of the base body 15.

  The guide bar 16 is a bar having a circular cross section as shown in FIGS. 1 to 4, and is provided in a parallel state at a predetermined interval on the lower surface side of the base body 15, and will be described later. 4 is fitted and connected so as to be slidable.

  The distal end portion of the guide rod body 16 is provided so as to be flush with the distal end of the slide body 4 when the slide body 4 is slid to the slide base end. It is comprised so that it may function as an extrusion part which extrudes the cut-off bone 1a which entered inside.

  Note that the tip of the guide rod 16 may be provided so as to protrude from the tip of the slide 4.

  A blade plate 5 is provided at the tip of the main body 3.

  The blade plate 5 is suspended from the tip of the main body 3 in a direction intersecting the length direction of the main body 3.

  Specifically, the blade plate 5 is formed of an appropriate metal (stainless steel) plate material as illustrated in FIGS. 1 to 4, and is connected to the upper surface of the distal end portion of the base body 15 associated with the main body 3. The front end of the metal plate member 17 is bent at a right angle downward, and the bent piece is formed on the lower surface of the base body 15 so as to protrude from the front end edge of the bone placing portion 11.

  That is, the blade plate 5 and the wall portion 12 described above are formed by bending a part of the metal plate material 17, respectively.

  The blade plate 5 is configured such that the scraped bone 1 a is introduced into the inner surface side of the blade plate 5 when the main body 3 is pulled backward to scrape the surface of the bone 1.

  In addition, when the slide body 4 is positioned at the slide tip, the blade plate 5 has a tip portion (tip hole portion 6) of the slide body 4 on the inner surface of the blade plate 5 with a small clearance (about 0.2 mm). Close to each other.

  Further, the blade 5 a of the blade plate 5 is configured to protrude downward from the lower end of the slide body 4.

  Further, a convex body 8 made of a metal rod is provided on the inner surface of the blade plate 5.

  The convex body 8 is configured as an abutting body 8 that abuts against the slide body 4 when the slide body 4 is positioned at the distal end of the slide body 4 and serves as a resistance to slide movement toward the proximal side of the slide body 4. The contact body 8 is pressed against the slide body 4.

Specifically, the distal end portion of the base member 15 and the metal plate 17 is resilient to resist movement in the upward direction, thus the elasticity of the base body 1 5及 beauty metal plate 17, the abutting member 8 are brought into press圧当against the slide body 4. Although not shown, the abutting body 8 may be provided with a slide resistance portion that is locked to the slide body 4 and serves as a resistance to slide movement in the proximal direction of the slide body 4.

  Further, in this embodiment, when the slide body 4 is brought close to the blade plate 5, a contacted portion with which the contact body 8 contacts is provided, and the contacted portion is provided on the slide body 4.

  Specifically, when the slide body 4 is positioned at the slide tip, the contacted portion (the upper inner wall surface of the tip hole portion 6) of the slide body 4 with which the contact body 8 comes into contact is formed between the main body 3 and the contact body. 8, the abutment body 8 is configured to prevent the blade plate 5 from moving in the proximal direction (retracting movement).

  Therefore, the abutting body 8 prevents the blade plate 5 from moving to the proximal side (upward side) due to the resistance of cutting the bone 1 with the blade plate 5, and the blade 5 a protrudes from the lower end of the slide body 4. It is configured to maintain and reliably cut.

  The slide body 4 is formed by forming a suitable transparent synthetic resin member into a cylindrical shape as shown in FIGS.

  The distal end portion of the slide body 4 is open, and the distal end hole portion 6 having the distal end opening portion has a small gap with respect to the inner surface of the blade plate 5 when the slide body 4 is positioned at the slide distal end. The storage space 7 of the bone 1a which was cut close and closed by the blade plate 5 is formed.

  The slide body 4 is provided with a finger pad 4a.

  The finger contact portion 4a is provided so as to be positioned below the finger-hanging convex portion 10 of the main body 3 when the slide body 4 is positioned at the slide tip.

  A convex slide locking portion 4 b is provided at the base end position of the upper surface of the slide body 4.

  The slide locking portion 4b is configured to lock to a concave locked portion 15b provided at the bottom surface base end position of the base body 15 when the slide body 4 is positioned at the slide tip. The locking portion 4b may be concave and the locked portion 15b may be convex.

  As shown in FIG. 4, the slide body 4 is provided with concave ridges 4 c on the front end side left and right side surfaces on which the hook-like pieces 15 a provided on the left and right side edges of the base body 15 associated with the main body 3 slide.

  In addition, a concave groove that opens to the leading edge of the slide body 4 is provided on the inner bottom surface of the slide body 4 at the tip hole portion 6.

  The concave groove serves as a guide for guiding the contact body 8 into the tip hole 6 of the slide body 4 and is a locking contact section 4d that prevents the slide body 4 from rotating in the axial direction. .

  In the present embodiment, the tip portion of the slide body 4 has a cylindrical cross section, but may have a U-shaped cross section (a semi-cylindrical cross section) with a part cut away. It is formed by a space surrounded by the inner surface and the lower surface of the main body 3, and the storage space 7 is closed by the blade plate 5.

  Since this embodiment is configured as described above, when the bone 1 (alveolar bone) exposed by incising the gum 20 in the implant treatment shown in FIG. 6 is shaved, the grasped main body 3 is moved backward, When the surface of the bone 1 is scratched with the blade plate 5, the bone 1 is scraped. The scraped bone 1 a is introduced into the inner surface of the blade plate 5 and passes through a small gap between the blade plate 5 and the slide body 4 (recessed portion 6), and then the storage space 7 formed by the slide body 4. (See FIG. 7).

  When transplanting the cut bone 1a as autologous bone, for example, the bone 1a is mixed with a bonding material (hydroxyapatite) and transplanted. However, when removing the cut bone 1a stored in the storage space 7, When the slide body 4 is slid in the base end direction with 15 being upside down and the distal end hole 6 is separated from the blade plate 5, the storage space 7 is opened, and the scraped bone 1a is the bone placement portion. Place on 11.

  The scraped bone 1a placed on the bone placement unit 11 and exposed to the outside can be taken out from the bone discharge unit provided at the left and right positions of the bone placement unit 11. (See FIG. 8).

  Thereafter, the artificial dental root 21 (implant) is embedded in the bone 1 (alveolar bone) to complete the implant treatment.

  Therefore, according to the present embodiment, it is possible to open the storage space 7 for storing the scraped bone 1a only by sliding the slide body 4, and the operation for opening the storage space 7 is a slide operation. Therefore, the removal work can be performed easily and satisfactorily without spilling the unexpectedly cut bone 1a.

  Further, in this embodiment, when the slide body 4 is brought close to the blade plate 5, the abutment body 8 that abuts against the slide body 4 and serves as a resistance to slide movement in the proximal direction of the slide body 4 is the blade. Since it is provided on the inner surface of the plate 5, the sliding movement of the slide body 4 in the proximal direction can be suppressed unexpectedly.

  Further, in this embodiment, the contact body 8 presses and contacts the slide body 4, so that the slide of the slide body 4 in the proximal direction can be suppressed even more satisfactorily.

  Further, in the present embodiment, when the slide body 4 is brought close to the blade plate 5, a contacted portion to which the contact body 8 contacts is provided, and this contacted portion is provided on the slide body 4. When cutting the bone 1 with the blade plate 5, a force that moves in the proximal direction is applied to the blade plate 5 due to this cutting resistance, but this proximal direction is caused by the contact body 8 that contacts the slide body 4. Therefore, a state in which the cutting work by the blade plate 5 can always be performed satisfactorily can be obtained.

In the present embodiment, the inner surface of the distal end portion of the main body 3 is provided with a bone placement portion 11 on which the cut bone 1a is placed. and from bone discharge unit 13 for discharging the bone 1a which is scraping from the bone mount 11 is provided, it is possible to take out the scraping bone 1a in this respect good.

  In this embodiment, the upper surface of the main body 3 is provided with a finger hooking convex portion 10 for hooking a finger for gripping the main body 3, so that the surface of the bone 1 by the blade plate 5 is scraped off. The shaving work can be performed well.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Bone 1a Scraped bone 3 Main body 4 Slide body 4d Locking contact part 5 Blade plate 5a Blade 6 Tip hole part 7 Storage space 8 Contact body
10 Finger protrusion
11 Bone placement part
12 Wall
13 Bone drainage
15 substrate
16 Guide rod

Claims (8)

It is for cutting bone, and has a slide body in which a blade plate is suspended at the tip of the main body, and a storage space is formed so as to be able to contact with and separate from the blade plate. When the bone is scraped by a blade provided at the tip of the blade plate while the main body is moved while being close to the blade plate, the scraped bone is introduced into the storage space. In addition, when the slide body is brought close to the blade plate, a contact body that contacts the slide body protrudes from the inner surface of the blade plate, and the contact body contacts the slide body Thus, it is configured to resist sliding movement of the slide body and to prevent elastic deformation of the main body in a direction away from the slide body when the bone is scraped by the blade. Bone cutting tool characterized by.   2. The bone cutting tool according to claim 1, wherein a tip end portion of the slide body is provided in a cylindrical shape, and a tip hole portion of the slide body is set in the storage space.   The bone cutting tool according to any one of claims 1 and 2, wherein the slide body is made of a transparent synthetic resin member.   The bone cutting tool according to any one of claims 1 to 3, wherein the main body includes a base body and a guide bar body connected to the base body, and the slide body is fitted on the guide bar body. The bone cutting tool is characterized in that the base body is composed of an elongated body made of synthetic resin.   The bone cutting tool according to any one of claims 1 to 4, wherein when the slide body is brought close to the blade plate, the slide body is engaged with and engaged with the contact body. A bone cutting tool characterized in that a part is provided.   The bone cutting tool according to any one of claims 1 to 4, wherein an inner surface of the slide body is a contacted portion with which the contact body abuts when the slide body is brought close to the blade plate. A bone cutter characterized by being set. The bone cutting tool according to any one of claims 1 to 6, wherein a bone placement portion on which the bone that has been cut is placed is provided on an inner surface of a distal end portion of the base body. bone-cutting toggle, characterized in that the bone discharge portion for discharging the scraping bone from the wall and a front Symbol bone placement unit in left and right positions of the parts is provided.   The osteotomy tool according to any one of claims 1 to 7, wherein an upper surface of the main body is provided with a finger hooking convex portion for gripping the main body and hooking a finger. Toggle.

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