CN105997188B - Abrasion drill for orthopedic operation device - Google Patents

Abstract

The invention discloses a grinding and drilling device for bone surgery, which comprises a grinding head (1), a support rod (2) and a sleeve (3), and the grinding head (1) is pierced on the support rod ( 2), a support ring (3) is provided on the support rod (2), and the support rod (2) extends into the sleeve (5), and the outer diameter of the support ring (3) is the same as that of the sleeve ( 5) to match the inner diameter. The invention sets a support ring, utilizes the principle of leverage, swings the grinding head to carry out the grinding operation, and also has a detachable limit device, which is simple in structure, convenient in operation, easy to adjust the grinding range, high in stability and good in safety .

Description

Drilling device for bone surgery

technical field

The invention relates to the technical field of bone tissue grinding tools, in particular to a drill device for bone surgery.

Background technique

Due to the sheath of the supporting rod, the grinding range of the commonly used bone surgery drill is limited to the circular motion or eccentric motion range of the grinding head. The grinding process lacks guidance for direction adjustment, and the direct guidance error of the hand is relatively large. It is easy to cause unnecessary grinding damage to bone tissue.

Contents of the invention

The technical problem to be solved by the present invention is to provide a grinding and drilling device for bone surgery that can adjust the grinding range.

Technical scheme of the present invention is as follows:

A kind of drill device for bone surgery, comprising a grinding head, a support rod and a sleeve, the grinding head is penetrated in the support rod through a grinding handle, a support ring is provided on the support rod, and the support rod Extending into the sleeve, the outer diameter of the support ring is adapted to the inner diameter of the sleeve; a detachable stopper is provided at one end of the sleeve, and the stopper has a protruding structure, and the protrusion The protruding structure is socketed and matched with the corresponding position of the inner hole of the casing, and covers a part of the size of the inner hole of the casing, and the grinding handle is passed through the corresponding position of the limit block; or the protruding structure is socketed with the shape of the casing Cooperate, the limit block covers a part of the size of the inner hole of the casing, and the grinding handle passes through the corresponding position of the limit block.

With the above structure, the grinding handle of the grinding head is installed in the support rod, the rotation of the grinding head will not be affected by the outside world, and it is also easy to hold. A support ring is set on the support rod, and the outer diameter of the support ring is larger than the support rod. The rod extends into the sleeve, and the outer diameter of the support ring matches the inner diameter of the sleeve. Therefore, using the position of the support ring as a support point, using the principle of leverage and the gap between the support rod and the auxiliary pipe, the grinding head can be Swing and grind along the circumference of the inner hole of the casing within the clearance range, which expands the grinding range. In addition, a protruding structure is set on the limit block and fixed on the casing, so that the grinding head can only be moved between the protruding structure and the casing. The movement between the inner walls can better achieve the effect of limiting the grinding range. The structure is simple and stable, and the use safety is good.

In order to cover and protect the soft tissue around the grinding position, preferably, a duckbill-shaped structure is provided at the end of the sleeve close to the grinding head.

In order to facilitate the swing of the support rod, preferably, the support ring is in the shape of a drum.

In order to facilitate the injection and discharge of air or water, preferably, at least one groove is provided on the outer surface of the support ring.

In order to facilitate the surgical operation of the drill, preferably, the shape of the grinding head is cylindrical, and cutting edges are provided on the front end and the peripheral surface.

In order to increase the hardness and improve the grinding quality, preferably, the shape of the grinding head is cylindrical, and the front end and the peripheral surface are provided with emery.

In order to prevent the swing of the grinding head from interfering with the sleeve, preferably, the outer diameter of the support rod is larger than that of the grinding head.

Beneficial effects: the present invention sets a supporting ring, utilizes the principle of leverage, swings the grinding head to carry out the grinding operation, and is also equipped with a detachable limit device, which is simple in structure, convenient in operation, easy to adjust the grinding range, and high in stability. Good security.

Description of drawings

Fig. 1 is the structural representation of embodiment 1.

Fig. 2 is a schematic diagram of the installation of the limit block and the bushing in Embodiment 1.

3 is a perspective view of Embodiment 2.

Fig. 4 is a schematic diagram of the installation of the limit block and the bushing in Embodiment 2.

Fig. 5 is a view along the direction A in Fig. 4 .

Fig. 6 is a structural schematic diagram of the supporting ring.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

Example 1

As shown in Fig. 1, Fig. 2 and Fig. 6, the present invention is made up of grinding head 1, support rod 2 and casing 3 etc., and the shape of described grinding head 1 is cylindrical, and front end and surrounding surface are provided with cutting edge or emery , in order to grind or repair bone tissue, the grinding head 1 is penetrated in the support rod 2 through the grinding handle, and the outer diameter of the support rod 2 is larger than the outer diameter of the grinding head 1; on the outside of the support rod 2 A support ring 3 is sleeved, the support ring 3 is drum-shaped, and at least one groove 31 is provided on the outer surface of the support ring 3, so as to inject and discharge air or water, clean the grinding position, and the support rod 2 Extending into the casing 5, the outer diameter of the support ring 3 is adapted to the inner diameter of the casing 5, and can flexibly move to any suitable position in the inner hole of the casing 5.

The end of the sleeve 5 close to the grinding head 1 is provided with a duckbill structure, so as to facilitate the shielding and protection of soft tissues around the grinding position.

When the grinding range of the grinding head 1 needs to be reduced, the protruding structure 41 protruding horizontally on the limit block 4 is inserted into the inner hole of the sleeve 5, and at the same time, a side next to the protruding structure 41 is provided There is a through hole through which the grinding handle 1 passes. In this way, the movable range of the grinding handle is limited to between the protruding structure and the inner wall of the casing 5, the grinding range is reduced, the structure is simple, and the installation is convenient.

Example 2:

As shown in Figures 3 to 5, different from Embodiment 1, a protruding structure 41 protruding horizontally is provided at one end of the limiting block 4, and when the grinding range of the grinding head 1 needs to be reduced, the The protruding structure 41 on the limiting block 4 is sleeved on the outer wall of the casing 5, and at the same time, a through hole is provided on one side next to the protruding structure 41, and the inner diameter of the through hole is smaller than the inner diameter of the casing 5. In order to achieve the purpose of covering a part of the size of the inner hole of the casing 5, the grinding handle is passed through the through hole, so that the range of motion of the grinding handle is also limited to between the protruding structure and the inner wall of the casing 5, which also realizes The purpose of reducing the grinding range, simple structure, convenient installation,

The parts not described in the present invention are consistent with the prior art, and will not be repeated here.

The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structures made using the description of the present invention and the contents of the accompanying drawings are directly or indirectly used in other related technical fields, and are equally applicable to the present invention. within the scope of patent protection.

Claims (7)

1. a kind of abrasion drill for orthopedic operation device, it is characterised in that：Including bistrique (1), supporting rod (2) and casing (5), the bistrique (1) it is threaded through in the supporting rod (2) by grinding handle, support ring (3), the supporting rod (2) is equipped on the supporting rod (2) It stretches into casing (5), the outer diameter of the support ring (3) is adapted with the internal diameter of casing (5)；It is arranged in one end of described sleeve pipe (5) There are removable limited block (4), the limited block (4) to have projective structure, pair of the projective structure (41) and casing (5) endoporus Position socket cooperation is answered, and shelters from a part for casing (5) endoporus size, the mill handle is fed through the correspondence of limited block (4) Position；Or the limited block (4) has projective structure (41), the projective structure (41) and the shape socket of casing (5) to coordinate, The limited block (4) shelters from a part for casing (5) endoporus size, and the mill handle is fed through the corresponding position of limited block (4).

2. abrasion drill for orthopedic operation device according to claim 1, it is characterised in that：In described sleeve pipe (5) close to bistrique (1) One end be provided with duckbill structure.

3. abrasion drill for orthopedic operation device according to claim 1, it is characterised in that：The support ring (3) is cydariform.

4. abrasion drill for orthopedic operation device according to claim 3, it is characterised in that：On the lateral surface of the support ring (3) Equipped at least one slot (31).

5. abrasion drill for orthopedic operation device according to claim 1, it is characterised in that：The shape of the bistrique (1) is cylindricality, Front end and circumferential surface are provided with cutting edge.

6. abrasion drill for orthopedic operation device according to claim 1, it is characterised in that：The shape of the bistrique (1) is cylindricality, Front end and circumferential surface are provided with diamond dust.

7. abrasion drill for orthopedic operation device according to claim 1, it is characterised in that：The outer diameter of the supporting rod (2) is more than The outer diameter of bistrique (1).