CN216797862U

CN216797862U - Spring bone drill

Info

Publication number: CN216797862U
Application number: CN202220134362.XU
Authority: CN
Inventors: 张波; 常晓龙
Original assignee: Changsha Tiantian Dental Equipment Co ltd
Current assignee: Changsha Tiantian Dental Equipment Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-24
Anticipated expiration: 2032-01-19

Abstract

The utility model provides a spring bone taking drill, which relates to the field of medical instruments and comprises a drill rod, wherein one end of the drill rod is provided with a connecting part connected with a mobile implant, and the other end of the drill rod is provided with a cutting structure; the upper retainer ring is sleeved in the middle of the drill rod; the lower retainer ring is sleeved on the drill rod in a sliding manner, is arranged between the upper retainer ring and the cutting structure, is also sleeved with an elastic component, and two ends of the elastic component are respectively connected with the upper retainer ring and the lower retainer ring; the outer cover is arranged on one surface, facing the cutting structure, of the lower check ring, the outer cover is in a hollow cylindrical shape, the cutting structure is located in the outer cover, when the cavity is prepared, the outer cover is connected with the elastic component when bone bodies are ground into bone chips, the cutting structure penetrates into the cavity, the cut bone chips enter the outer cover through a gap formed by matching the cutting structure and the outer cover, and are accumulated in the outer cover to collect the bone chips, the loss phenomenon cannot occur, the collected bone mass is sufficient, and meanwhile, the collected bone chips are conveniently taken out of the bone taking drill during operation of a doctor.

Description

Spring bone drill

Technical Field

The utility model relates to the field of medical instruments, in particular to a spring bone drill.

Background

In the operation of implanting the implant into the oral cavity of a patient, the alveolar bone can be automatically ground into bone chips and collected while preparing the cavity, and the bone chips can be used as the autologous bone source of the bone transplantation operation.

In the actual operation process, the phenomenon that the particle size is not suitable for the requirements of clinicians when the alveolar bone is automatically ground into bone chips and the phenomenon that the collected bone chips are lost too much to cause insufficient collection amount generally exists in a self-grinding bone-taking drill. In addition, after the bone drill is used for grinding bone fragments, an operator is troublesome to take out the bone powder from the bone drill and cannot clean the bone powder completely.

SUMMERY OF THE UTILITY MODEL

The utility model provides a spring bone-taking drill, and aims to solve the problem that the existing bone-taking drill is insufficient in collecting bone fragments.

In order to achieve the above object, an embodiment of the present invention provides a spring bone drill, including:

one end of the drill rod is provided with a connecting part connected with the planting mobile phone, and the other end of the drill rod is provided with a cutting structure;

the upper retainer ring is sleeved in the middle of the drill rod;

the lower retainer ring is sleeved on the drill rod in a sliding mode and arranged between the upper retainer ring and the cutting structure, the drill rod is further sleeved with an elastic component, and two ends of the elastic component are connected with the upper retainer ring and the lower retainer ring respectively;

the outer cover is arranged on one surface, facing the cutting structure, of the lower check ring, the outer cover is in a hollow cylindrical shape, the cutting structure is located in the outer cover, and the cutting structure extends out of the lower end of the outer cover.

Preferably, the annular groove is arranged in the middle of the drill rod, the upper retainer ring is arranged in the annular groove, a first convex shoulder is arranged on one side, close to the cutting structure, of the drill rod, and the first convex shoulder can be abutted to the lower retainer ring.

Preferably, one side of the lower retaining ring facing the outer cover is provided with a second shoulder, and the outer cover is clamped with the second shoulder.

Preferably, the cutting structure comprises a cutting base and a cutting edge, the cutting base is cylindrical, the diameter of the cutting base is larger than that of the drill rod, the diameter of the cutting base is smaller than that of the outer cover, the cutting base protrudes towards a direction away from the connecting part to form a tip, the tip is located at the central shaft of the drill rod, the cutting edge is located at the tip, the two cutting edges are symmetrically arranged relative to the tip, a side cutting edge is arranged on the side surface of the cutting base and connected with the cutting edge, a first working area, a second working area, a third working area and a fourth working area are arranged between the two cutting edges, channels for bone chips to pass through are arranged in the second working area and the fourth working area, and an edge tangent line of the first working area and the edge tangent line of the third working area form an included angle with the side cutting edge respectively, the included angle is 30 degrees.

Preferably, the upper retainer ring and the annular groove are internally connected with a clamp spring in a clamping manner.

Preferably, the outer cover is provided with a gap at one end close to the second shoulder, and the plurality of gaps are the same as the axial direction of the outer cover so that the second shoulder can prop the outer cover open.

Preferably, the elastic member is a spring.

The scheme of the utility model has the following beneficial effects:

when the cavity is prepared, the bone chips can be automatically ground by the cutting structure and collected to be used as the autologous bone source of the bone transplantation operation; when the bone body is ground into bone fragments, the outer cover is connected with the elastic component, the cut bone fragments enter the outer cover through a gap formed by matching the cutting structure and the outer cover along with the fact that the cutting structure goes deep into the cavity, and the bone fragments are accumulated in the outer cover to be collected, so that the phenomenon of loss is avoided, the collected bone mass is sufficient, and meanwhile, a doctor can conveniently take out the collected bone fragments from the bone drill during operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of a drill rod;

fig. 4 is an elevation view of a cutting structure.

[ description of reference ]

1-drill rod, 11-connecting part, 12-cutting structure, 13-annular groove, 14-first shoulder, 15-second shoulder, 2-upper retainer ring, 3-lower retainer ring, 4-elastic part, 5-outer cover, 6-clamp spring, 121-cutting base, 122-cutting edge, 123-side cutting edge, 124-first working area, 125-second working area, 126-third working area, 127-fourth working area and 128-channel.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, an embodiment of the present invention provides a spring bone drill, which includes a drill rod 1, an upper retainer 2, a lower retainer 3, and a housing 5, wherein one end of the drill rod 1 is provided with a connection portion 11 connected to a mobile phone, and the other end is provided with a cutting structure 12. The implant hand machine is used for transmitting power so that the drill rod 1 can rotate to drive the cutting structure 12 to drill the bone body to form a cavity. The upper retainer ring 2 is sleeved in the middle of the drill rod 1, the lower retainer ring 3 is slidably arranged on the drill rod 1, the lower retainer ring 3 is positioned between the upper retainer ring 2 and the cutting structure 12, the drill rod 1 is further sleeved with an elastic component 4, and two ends of the elastic component 4 are respectively connected with the upper retainer ring 2 and the lower retainer ring 3. The aforementioned housing 5 is arranged on the side of the lower retaining ring 3 facing the cutting structure 12. The outer cover 5 is hollow and cylindrical, the cutting structure 12 is positioned in the outer cover 5, and the part of the cutting structure 12 extends out of the lower end of the outer cover 5. Preferably, the elastic member 4 is a spring.

In use, the cutting structure 12 extending partially out of the housing 5 is brought into contact with the shaft first and a cavity is prepared, the housing 5 is brought into contact with the shaft as the depth of the cavity increases, and bone chips enter the housing 5 through the space between the cutting structure 12 and the housing 5 and are deposited in the housing 5 by the extrusion of the bone chips and attached to the first shoulder 14.

Further, the middle part of drilling rod 1 is provided with annular groove 13, goes up retaining ring 2 and sets up in annular groove 13, and one side that drilling rod 1 is close to cutting structure 12 is provided with first convex shoulder 14, and first convex shoulder 14 is used for limiting the minimum distance of retaining ring 3 apart from cutting structure 12 down with 3 butts of lower retaining ring, avoids cutting structure 12 to hide in dustcoat 5, can't accomplish the nest hole preparation when starting.

A second shoulder 15 is provided on the side of the lower securing ring 3 facing the housing 5, and the housing 5 engages with the second shoulder 15. Specifically, the outer cover 5 is provided with a slit at one end close to the second shoulder 15, and the plurality of slits are the same as the axial direction of the outer cover 5, so that the second shoulder 15 can expand the outer cover 5, and the outer cover 5 can be conveniently taken off from the lower retainer ring 3. In addition, when the cavity is prepared, the cutting structure 12 and the bone body rub violently, so that the bone body is easy to burn, the gap can also guide water supplied by the mobile phone implant to enter the outer cover 5, the cutting structure 12 is cooled, and the water flow and the bone fragments are mixed so that the bone fragments can be coated on the first convex shoulder 14.

The snap spring 6 is clamped in the upper retainer ring 2 and the annular groove 13, so that the position of the upper retainer ring 2 is prevented from moving.

The cutting structure 12 includes a cutting base 121 and a cutting edge 122, the cutting base 121 is cylindrical, the diameter of the cutting base 121 is greater than that of the drill rod 1, the diameter of the cutting base 121 is smaller than that of the housing 5, the cutting base 121 protrudes away from the connecting portion 11 to form a tip, the tip is located at the central axis of the drill rod 1, the cutting edge 122 is located at the tip, the two cutting edges 122 are symmetrically arranged about the tip, a side cutting edge 123 is arranged on a side surface of the cutting base 121, the side cutting edge 123 is connected with the cutting edge 122, a first working area 124, a second working area 125, a third working area 126 and a fourth working area 127 are arranged between the two cutting edges 122, the second working area 125 and the fourth working area 127 are provided with a channel 128 for bone fragments to pass through, and edge tangents of the first working area 124 and the third working area 126 respectively form an included angle with the side cutting edge 123, and the included angle is 30 °.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A spring bone drill, comprising:

the drilling rod (1), one end of the drilling rod (1) is provided with a connecting part (11) connected with a planting mobile phone, and the other end of the drilling rod is provided with a cutting structure (12);

the upper retainer ring (2) is sleeved in the middle of the drill rod (1);

the lower retainer ring (3) is sleeved on the drill rod (1) in a sliding mode, the lower retainer ring (3) is arranged between the upper retainer ring (2) and the cutting structure (12), the drill rod (1) is further sleeved with an elastic component (4), and two ends of the elastic component (4) are connected with the upper retainer ring (2) and the lower retainer ring (3) respectively;

the outer cover (5) is arranged on one surface, facing the cutting structure (12), of the lower retainer ring (3), the outer cover (5) is in a hollow cylindrical shape, the cutting structure (12) is located in the outer cover (5), and the cutting structure (12) partially extends out of the lower end of the outer cover (5).

2. The spring bone drill of claim 1, wherein: drilling rod (1) middle part sets up annular (13), it sets up to go up retaining ring (2) in annular (13), drilling rod (1) is close to one side of cutting structure (12) sets up first convex shoulder (14), first convex shoulder (14) can with retaining ring (3) butt down.

3. The spring bone drill of claim 2, wherein: one side of the lower retainer ring (3) facing the outer cover (5) is provided with a second convex shoulder (15), and the outer cover (5) is clamped with the second convex shoulder (15).

4. The spring bone drill of claim 1, wherein: the cutting structure (12) comprises a cutting base (121) and a cutting edge (122), the cutting base (121) is cylindrical, the diameter of the cutting base (121) is larger than that of the drill rod (1), the diameter of the cutting base (121) is smaller than that of the outer cover (5), the cutting base (121) protrudes in a direction away from the connecting part (11) to form a tip, the tip is located at the central axis of the drill rod (1), the cutting edge (122) is located on the tip, the two cutting edges (122) are symmetrically arranged relative to the tip, a side cutting edge (123) is arranged on the side surface of the cutting base (121), the side cutting edge (123) is connected with the cutting edge (122), and a first working area (124), a second working area (125), a third working area (126) and a fourth working area (127) are arranged between the two cutting edges (122), the second working area (125) and the fourth working area (127) are provided with channels (128) for bone fragments to pass through, edge tangents of the first working area (124) and the third working area (126) respectively form included angles with the side cutting edges (123), and the included angles are 30 degrees.

5. The spring bone drill according to claim 2, characterized in that the snap spring (6) is clamped between the upper retainer ring (2) and the annular groove (13).

6. A spring bone drill according to claim 3, characterized in that the housing (5) is provided with slits near one end of the second shoulder (15), several of said slits being in the same axial direction as the housing (5) so that the second shoulder (15) props the housing (5).

7. The spring bone drill of claim 1, wherein: the elastic component (4) is a spring.