CN215228108U - Hollow bone chisel device - Google Patents

Abstract

The utility model provides a hollow osteotome device, the scheme of adoption is: the bone resetting device comprises a hollow bone chisel rod and a core rod, wherein the hollow bone chisel rod is provided with a longitudinal cavity, the front part of the hollow bone chisel rod is provided with an opening communicated with the cavity, the core rod is installed in the cavity of the hollow bone chisel rod and can move along the longitudinal direction of the hollow bone chisel rod, and a resetting component is arranged between the core rod and the hollow bone chisel rod. The effect brought is: by providing the osteotome rod with a hollow opening at least in the front portion thereof communicating with the cavity, the core rod can be moved from the rear to the front in use by mounting the core rod so that the broken bone can be ejected. In addition, hollow bone chisel head is fixed with in hollow bone chisel rod front portion, and hollow bone chisel head is inside to set up helicitic texture, can prevent effectively that the garrulous bone is automatic to drop, especially the coming off of cancellous bone, conveniently takes out the garrulous bone from the human body.

Description

Hollow bone chisel device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a hollow osteotome device that uses in bone surgery.

Background

In orthopedic surgery, particularly in the treatment of herniated and other intervertebral disc and spinal diseases, a tool is used to cut a portion of bone out to expose a focal site, and a portion of the patient also needs to use the bone as a bone graft.

The existing frequently used bone chiseling tool is a flat-edge or arc-shaped osteotome, and the osteotome is used for chiseling bones in the operation and then the rongeur is used for taking out the broken bones. This method is inefficient in operation, requires repeated switching of the operating tools, and requires less chiseling for either flat-edged osteotomes or curved osteotomes, and irregular chiseling of bone, and post-processing if used for bone grafting. This is seen as inefficient and prolonged procedure time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a hollow osteotome device, which firstly solves the problem of low efficiency of taking out broken bones by using rongeur after osteotome is used for osteotomy.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a hollow osteotome device includes a hollow osteotome rod having a longitudinal cavity and a front portion having an opening communicating with the cavity, and a core rod mounted in the cavity of the hollow osteotome rod and movable longitudinally thereof, a reset assembly being provided between the core rod and the hollow osteotome rod. Through setting up the osteotome pole to hollow, have the opening with the cavity intercommunication at its front portion at least, through the installation core bar, can follow the forward core pole that moves backward when using to can ejecting broken bone, can directly take out the bone, need not switch instruments such as rongeur, realized the integration of chisel bone and getting the bone, improved operation efficiency.

Further, a hollow chisel head is provided at a front portion of the hollow chisel rod, and the hollow chisel head has a cavity penetrating in a front-rear direction.

Further, an internal thread structure is arranged in the hollow bone chisel head. The bone chiseling/taking amount is increased, and the internal thread structure can prevent the crushed bone from automatically falling off, particularly prevent the cancellous bone from automatically falling off.

Further, the cavity of the hollow bone chisel head is cylindrical. Because the interior is the hollow cylinder shape, so the broken bone shape rule of taking out is unanimous, makes things convenient for the bone grafting of later stage to handle.

Further, the hollow bone chisel head has a sharp cutting edge.

Further, the cross section of the hollow bone chisel head is circular.

Further, the hollow bone chisel head and the hollow bone chisel rod are integrally formed, or the hollow bone chisel head and the hollow bone chisel rod are separated but connected together.

Furthermore, the reset assembly comprises a spring, the spring is installed in a cavity of the hollow bone chisel rod, the core rod penetrates through the spring, and two ends of the spring are respectively abutted against the hollow bone chisel rod and the core rod. The automatic reset function of the core rod is realized.

Furthermore, the side wall of the hollow bone chisel rod is provided with a long hole, the core rod is connected with a stop block, and the stop block penetrates out of the long hole. Through setting up the dog, can follow the outside and promote the dog and then realize promoting the purpose of core bar.

Further, the hollow osteotome device further comprises a striking block detachably connected to the stop block during use. The core rod can be moved by pushing or knocking the knocking block, so that broken bones can be ejected out, and the function of assisting knocking is mainly achieved.

Furthermore, a handle is arranged at the rear part of the hollow bone chisel rod, and the handle and the hollow bone chisel rod are connected through a pin. The handle is arranged to facilitate holding operation.

According to the technical scheme, the utility model has the advantages of it is following:

this scheme provides a hollow bone chisel device, through setting up mobilizable core bar, the bone chisel head is circular, and has sharp blade, uses hand push or the mode that the bone hammer strikeed to promote inside core bar to push out the garrulous bone in the hollow bone chisel pole behind the chisel bone, need not switch instruments such as rongeur, improves chisel bone/get bone efficiency. The bone chisel head is hollow and has a partial threaded structure, so that the bone chiseling/taking amount is increased, and the internal threaded structure can prevent broken bones from automatically falling off, particularly cancellous bones. Meanwhile, the bone chisel head is internally in a hollow cylindrical shape, so that the shape of the broken bone taken out is regular and consistent, and the bone grafting treatment at the later stage is facilitated.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of a hollow core chisel head according to an embodiment of the present invention.

In the figure, 1, a hollow osteotome head, 2, a spring, 3, a core rod, 4, a hollow osteotome rod, 5, a stop block, 6, a knocking block, 7, a pin, 8, a handle, 9 and an internal thread structure.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 1 and 2, the utility model provides a hollow osteotome device, including hollow osteotome 4, hollow osteotome head 1, core bar 3, spring 2, dog 5, strike piece 6 and handle 8, hollow osteotome 4 has vertical cavity, and the front portion of hollow osteotome 4 has the opening with the cavity intercommunication, core bar 3 is installed in the cavity of hollow osteotome 4 and can be followed the longitudinal movement of hollow osteotome 4, spring 2 is installed in the cavity of hollow osteotome 4, core bar 3 passes spring 2, the both ends of spring 2 support respectively to lean on hollow osteotome 4 and core bar 3, realize the automatic re-setting function of core bar 3. Specifically, hollow bone chisel 4 is anterior to be hollow bone chisel head 1, and hollow bone chisel head 1 welded fastening is on hollow bone chisel 4, and hollow bone chisel head 1 has the cavity that link up from beginning to end, also is a vertical cavity on hollow bone chisel head 1 and the hollow bone chisel head 1, and this cavity is open at the front, and core rod 3 can move to the open position along the cavity in order to reach the effect of ejecting broken bone.

Wherein, the hollow bone chisel head 1 is provided with a section of internal thread structure 9 which can prevent the crushed bone from automatically falling off, especially prevent the cancellous bone from automatically falling off; hollow bone chisel head 1 has sharp blade, and the blade is located hollow bone chisel head 1's front portion, and the cross section of hollow bone chisel head 1 and blade is ring shape, and the blade is sharp from the back forward gradual change. Further, the cavity of the hollow bone chisel head 1 is cylindrical, and the inner part of the cavity is in the shape of a hollow cylinder, so that the shape of the broken bone taken out is regular and consistent, and the bone grafting treatment at the later stage is facilitated.

Wherein, be provided with rectangular hole on the rear portion lateral wall of hollow osteotome pole 4, be connected with dog 5 on core bar 3, dog 5 wears out from rectangular hole, strikes piece 6 during the use and is connected with dog 5 detachably, promotes or strikes and strikes piece 6 and can make core bar 3 remove to can ejecting broken bone. The handle 8 is arranged at the rear part of the hollow bone chisel rod 4, the handle 8 and the hollow bone chisel rod 4 are fixedly connected through a pin 7, and the pin 7 penetrates from the side part.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings (if any) are used to distinguish relative relationships in position, and are not necessarily qualitative. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The hollow osteotome device is characterized by comprising a hollow osteotome rod (4) and a core rod (3), wherein the hollow osteotome rod (4) is provided with a longitudinal cavity, the front part of the hollow osteotome rod (4) is provided with an opening communicated with the cavity, the core rod (3) is installed in the cavity of the hollow osteotome rod (4) and can move along the longitudinal direction of the hollow osteotome rod (4), and a reset component is arranged between the core rod (3) and the hollow osteotome rod (4).

2. A hollow osteotome device according to claim 1, characterised in that said hollow osteotome rod (4) is provided at its front with a hollow osteotome head (1), said hollow osteotome head (1) having a cavity passing through it.

3. A hollow osteotome device according to claim 2, characterised in that said hollow osteotome head (1) has an internal thread formation (9) provided therein.

4. A hollow osteotome device according to claim 2 or 3, wherein said hollow cavity of said hollow osteotome head (1) is cylindrical and said hollow osteotome head (1) has a circular cross-section.

5. A hollow osteotome device according to claim 4, characterized in that said front portion of said hollow osteotome head (1) has a sharp cutting edge.

6. The hollow osteotome device of claim 2, wherein said hollow osteotome head (1) is formed integrally with said hollow osteotome shank (4), or wherein said hollow osteotome head (1) and said hollow osteotome shank (4) are separate but joined together.

7. A hollow osteotome device according to claim 1, characterised in that said return member comprises a spring (2), said spring (2) being mounted in the cavity of the hollow chisel (4), said core rod (3) passing through the spring (2), the ends of the spring (2) abutting against the hollow chisel (4) and the core rod (3), respectively.

8. A hollow osteotome device according to claim 1, characterised in that said hollow osteotome rod (4) is provided with a longitudinal bore in a side wall thereof, said core rod (3) being connected to a stop (5), said stop (5) extending through said longitudinal bore.

9. A hollow osteotome device according to claim 8, further comprising a striking block (6), said striking block (6) being removably connected to said stop (5) in use.

10. A hollow osteotome device according to claim 1, characterized in that said shank (4) is provided at the rear thereof with a handle (8), said handle (8) being connected to said shank (4) by means of a pin (7).

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