CN214259413U

CN214259413U - Skeleton tapping device

Info

Publication number: CN214259413U
Application number: CN202022438753.4U
Authority: CN
Inventors: 史春宝; 李红霞; 吴增光
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-09-24
Anticipated expiration: 2030-10-27

Abstract

The utility model belongs to the technical field of medical instrument, a be applied to skeleton trompil device of orthopedics is disclosed. The bone opening device comprises: the transmission mechanism comprises a connecting rod assembly and a sleeve, and the connecting rod assembly is coaxially arranged in the sleeve and can slide relative to the sleeve; the drilling mechanism comprises a cutter holder fixedly connected with the sleeve and a cutter head hinged with the cutter holder through a rotating shaft, and one end of the cutter head, which is far away from the cutting edge, is hinged with the connecting rod assembly through the rotating shaft; and the adjusting mechanism is arranged at one end of the sleeve, which is far away from the drilling mechanism, and an adjusting part of the adjusting mechanism is connected with the connecting rod assembly and used for driving the connecting rod assembly to slide relative to the sleeve so that the connecting rod assembly can drive the cutter head to swing relative to the cutter holder. The utility model discloses a skeleton trompil device can reverse reaming, can adjust reaming diameter size according to the operation particular case again.

Description

Skeleton tapping device

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to be applied to bone trompil device of orthopedics.

Background

The bone tapping device is a surgical instrument commonly used in orthopedic surgery, a drill bit on the bone tapping device is usually used for drilling and reaming bones, and the bone tapping device is often used together with an arthroscope.

In the prior art, bone opening devices are commonly used in the field, which often suffer from the following problems: 1) when the bone tapping device in the prior art is used, usually, the drill bit is only one type of size, and if the size of the opening needs to be changed, the drill bits of different types need to be replaced for multiple times in the operation so as to meet the operation requirement, so that the operation in the operation is very inconvenient; 2) the drill bit that the skeleton trompil device among the prior art used can't satisfy reverse reaming' demand in the operation effectively, can only carry out forward drilling, reaming, and the availability factor is lower.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned whole or partial problem, the utility model aims to provide a be applied to bone trompil device of orthopedics for bone trompil device can reverse reaming, can adjust reamed diameter size according to operation particular case again.

The utility model discloses a skeleton trompil device includes: the transmission mechanism comprises a connecting rod assembly and a sleeve, and the connecting rod assembly is coaxially arranged in the sleeve and can slide relative to the sleeve; the drilling mechanism comprises a cutter holder fixedly connected with the sleeve and a cutter head hinged with the cutter holder through a rotating shaft, a drilling cutter edge and a hole expanding cutter edge are oppositely formed on the cutter head, and one end of the hole expanding cutter edge is hinged with the connecting rod assembly through the rotating shaft; and the adjusting mechanism is arranged at one end of the sleeve, which is far away from the drilling mechanism, and an adjusting part of the adjusting mechanism is connected with the connecting rod assembly and used for driving the connecting rod assembly to slide relative to the sleeve so that the connecting rod assembly can drive the cutter head to swing relative to the cutter holder.

Further, the connecting rod assembly includes: the sliding rod part is sleeved in the sleeve in a sliding manner, and the adjusting part of the adjusting mechanism is connected with the sliding rod part; and the two ends of the driving rod part are respectively hinged with the end part of the sliding rod part and one end of the reaming cutting edge through a rotating shaft.

Further, the driving rod part comprises two rod parts which are oppositely arranged on two sides of the sliding rod part and are hinged with the sliding rod part.

Further, the adjusting mechanism comprises a shell and two adjusting gears which are oppositely arranged in the shell through a rotating shaft. The shell is fixed at one end of the sleeve, which is far away from the drilling mechanism, adjusting openings are formed on opposite sides of the shell and the sleeve, and the adjusting openings on the same side are positioned at corresponding positions; the two adjusting gears are respectively arranged at the adjusting opening and meshed with the sliding rod part.

Furthermore, a first scale mark is formed on the outer wall surface of the shell at the adjusting opening, and a reference scale line matched with the first scale mark is formed on the adjusting gear.

Further, the tool apron is a tubular structure coaxially connected with the sleeve, a groove transversely penetrating through the tubular structure is formed at one end of the tubular structure connected with the tool bit, and the tool bit is installed in the groove and hinged with the groove. Wherein the drilling mechanism is configured to: under the drive of link assembly, the tool bit can be through the recess for the blade holder swing, can make the tool bit can accomodate to the blade holder in through the recess simultaneously.

Further, the boring edge is configured as at least two lateral cutting edges formed at one end of the cutter head laterally and angularly, and the reaming edge is configured as at least two radial cutting edges formed radially at the other end of the cutter head.

Furthermore, a limiting gasket is sleeved on the outer peripheral wall of the sleeve, which is located between the adjusting mechanism and the drilling mechanism, and a preset distance is formed between the limiting gasket and the drilling mechanism.

Further, the outer wall surface of the sleeve is formed with a threaded portion, and the limit washer is configured to be threadedly coupled with the threaded portion.

Further, the outer face of the sleeve is also formed with second graduation lines along the axial direction.

The bone tapping device of the utility model can realize reverse reaming through one tool bit, and can adjust the reaming diameter according to the concrete condition of the operation, thereby effectively reducing the operation difficulty of the operation when the bone tapping device is used, saving labor and improving the efficiency of the whole operation process, and effectively reducing the operation time; in addition, the stability of the bone hole opening device during drilling is improved, so that bone loss can be effectively avoided, joint bone fragments are not easily formed in a bone marrow channel, and bone damage is small.

Drawings

Fig. 1 is a schematic structural view of a bone hole opening device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the bone opening device of FIG. 1;

FIG. 3 is an enlarged partial view of the bone opening device of FIG. 2 at location A;

FIG. 4 is a schematic structural view of the drilling mechanism of FIG. 1 showing the drill blade disposed along the axis of the sleeve;

fig. 5 is a schematic structural view of the drilling mechanism of fig. 1, showing the reaming blade flipped perpendicular to the linkage assembly.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the bone perforating device of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 illustrate the structure of a bone opening device 100 according to an embodiment of the present invention. As shown in fig. 1 and 2, the bone opening device 100 includes: the transmission mechanism 1 comprises a connecting rod assembly 11 and a sleeve 12, wherein the connecting rod assembly 11 is coaxially arranged in the sleeve 12 and can slide relative to the sleeve 12; the drilling mechanism 2, as shown in fig. 4 and 5, includes a tool holder 21 fixedly connected to the sleeve 12 and a tool bit 22 hinged to the tool holder 21 through a rotating shaft, a drilling blade 221 and a reaming blade 222 are oppositely formed on the tool bit 22, and one end of the reaming blade 222 is hinged to the connecting rod assembly 11 through a rotating shaft; and the adjusting mechanism 3, the adjusting mechanism 3 is arranged at one end of the sleeve 12 far away from the drilling mechanism 2, and an adjusting part of the adjusting mechanism 3 is connected with the connecting rod assembly 11 and is used for driving the connecting rod assembly 11 to slide relative to the sleeve 12, so that the connecting rod assembly 11 can drive the cutter head 22 to swing relative to the cutter holder 21.

The utility model discloses skeleton trompil device 100 is before the use, installs the arthroscope earlier, inserts skeleton trompil device 100 to the arthroscope in. During the operation, the cutting head 22 is turned to the state that the drill blade 221 is positioned in the medullary canal along the axial direction of the sleeve 12 (as shown in fig. 4) and the drilling operation of the bone is completed by the driving of the external driving device, at which the inner diameter of the hole is minimized. After the bone opening device 100 reaches the predetermined position, the medical instrument such as an arthroscope is withdrawn, and the bone opening device 100 continues to drill forward until the cutting head 22 of the bone opening device 100 is completely exposed from the bone. Through the control of adjustment mechanism 3, the adjusting part of adjustment mechanism 3 drives link assembly 11 and slides for sleeve 12, link assembly 11 drives tool bit 22 and swings for blade holder 21 to make the one end of reaming cutting edge 222 overturn (as shown in fig. 5, the angle of overturning is the biggest to be perpendicular with link assembly 11), reaming cutting edge 222 after the predetermined angle of swing has formed bigger smear metal diameter (the biggest smear metal diameter is when reaming cutting edge 222 is perpendicular with link assembly 11 promptly), adopt the mode of circling round and punch, enlarge the size in hole through reaming cutting edge 222, in order to satisfy the needs of the operation. After reaching the desired reaming position, the reaming blade 222 is retracted into the tool holder 21 by the adjustment mechanism 3, and the bone hole drilling device 100 is withdrawn from the way, thereby completing the drilling and reaming of the bone.

Through the arrangement, the bone hole opening device 100 provided by the embodiment of the invention can realize reverse hole expansion and adjust the hole expansion diameter according to the specific condition of the operation through the cutter head 22, so that the bone hole opening device 100 provided by the embodiment of the invention can effectively reduce the operation difficulty of the operation when in use, the whole operation process is labor-saving and high in efficiency, and the operation time is effectively reduced; in addition, the stability of the bone perforation device 100 during drilling is improved, so that bone loss can be effectively avoided, and meanwhile, joint bone fragments are not easily formed in a bone marrow channel, and bone damage is small.

Preferably, as shown in fig. 2 and 3, the connecting rod assembly 11 may include: the sliding rod part 111 is sleeved in the sleeve 12 in a sliding manner, and the adjusting part of the adjusting mechanism 3 is connected with the sliding rod part 111; and a driving rod part 112, both ends of the driving rod part 112 are respectively hinged with the end of the sliding rod part 111 and one end of the reaming blade 222 through a rotating shaft. Through this setting, tool bit 22 is articulated with tool holder 21, tool holder 21 and sleeve 12 fixed connection, and the one end of reaming cutting edge 222 is articulated with the one end of actuating lever portion 112, and the other end of actuating lever portion 112 forms articulatedly with slip lever portion 111, and like this, under the drive of slip lever portion 111, actuating lever portion 112, tool bit 22 and each part of tool holder 21 can constitute link mechanism, so that the utility model discloses a drive mechanism 1's transmission mode's structure is more simple, and overall structure is more reliable stable. Preferably, the driving lever part 112 may include two lever parts oppositely disposed at both sides of the sliding lever part 111 and forming a hinge joint with the sliding lever part 111.

In the preferred embodiment shown in fig. 2, the adjusting mechanism 3 may include a housing 31 and two adjusting gears 32 oppositely disposed in the housing 31 by a rotating shaft. Wherein, the shell 31 is fixed at one end of the sleeve 12 far away from the drilling mechanism 2, the shell 31 and the sleeve 12 are both formed with an adjusting opening 33 on the opposite side, and the adjusting opening 33 on the same side is located at the corresponding position; two adjusting gears 32 are respectively provided at the adjusting openings 33 and are brought into mesh with the slide lever portion 111. Through this setting, adjustment mechanism 3's operation mode only for through adjust opening 33 to adjusting gear 32 stir can, adjustment mode is simple to can further reduce the operation degree of difficulty of operation, make whole operation process laborsaving, efficient, reduce the operation time effectively.

Preferably, a first scale mark (not shown) may be formed on an outer wall surface of the housing 31 at the adjustment opening 33, and a reference scale line (not shown) matching the first scale mark may be formed on the adjustment gear 32. Through this setting, the pivoted angle of adjusting gear 32 can be instructed effectively to the scale mark that forms to can be through the effective and accurate displacement distance who judges connecting rod assembly 11 of the meshing of adjusting gear 32 and connecting rod assembly 11, and then can be through the articulated effective and accurate swing angle who judges tool bit 22 of connecting rod assembly 11 and tool bit 22, so that to tool bit 22 swing angle's regulation data ization operation, mention reaming precision.

In a preferred embodiment shown in fig. 2 to 5, the tool holder 21 may be configured as a tubular structure coaxially connected to the sleeve 12, and one end of the tubular structure connected to the tool bit 22 may be formed with a groove 211 transversely penetrating the tubular structure, and the tool bit 22 is mounted in the groove 211 and forms an articulation with the groove 211. Wherein the drilling mechanism 2 may be configured to: under the driving of the link assembly 11, the tool bit 22 can swing relative to the tool holder 21 through the groove 211, and the tool bit 22 can be accommodated in the tool holder 21 through the groove 211. Specifically, the openings of the recess 211 on both sides of the seat 21 are configured as a first opening and a second opening, wherein the depth of the first opening in the axial direction of the seat 21 is greater than the depth of the second opening in the axial direction of the seat 21. When the cutter head 22 is driven to swing relative to the cutter holder 21 by the driving rod 112, one end of the reaming blade 222 is positioned at the first opening. Thus, when the cutter head 22 returns to the original position after reaming, the one end of the reamer blade 222 can be pulled back into the cutter holder 21 through the first opening.

Preferably, the boring cutting edge 221 may be configured as at least two lateral cutting edges formed at one end of the cutter head 22 in a lateral and angled manner, and the reamer cutting edge 222 may be configured as at least two radial cutting edges formed radially at the other end of the cutter head 22. It should be noted that "transverse" is understood herein to be perpendicular to the length of the cutting head 22, and "radial" is understood herein to be along the length of the cutting head 22.

In the preferred embodiment shown in fig. 1 and 2, the outer circumferential wall of the sleeve 12 between the adjusting mechanism 3 and the drilling mechanism 2 may be provided with a stop washer 4, and a predetermined distance may be formed between the stop washer 4 and the drilling mechanism 2. Through this setting, the drilling depth of spacing skeleton trompil device 100 can be effectively in the distance of predetermineeing of formation to can improve its security of using, avoid injecing the drilling depth at needs and be, avoid the drilling depth too deeply or too shallow and can't satisfy the problem emergence of requirement.

In a preferred embodiment, the outer wall surface of the sleeve 12 may be formed with a threaded portion (not shown in the drawings), and the spacing washer 4 may be configured to be threadedly coupled with the threaded portion. Through this setting, work as the utility model discloses when bone trompil device 100 faces the demand of different drilling depth, go back accessible limit washer 4 and sleeve 12's screw-thread fit to can be convenient for adjust the size of predetermineeing the distance, make limit washer 4's spacing distance adjustable while, guarantee drilling depth's accuracy.

Also preferably, the outer face of the sleeve 12 may be further formed with second graduation marks (not shown) in the axial direction. Through this setting, when through rotating spacing washer 4 with the distance of predetermineeing between adjusting spacing washer 4 and drilling mechanism 2, the length of distance is predetermine in the instruction of accessible second scale mark, more accurate definite to the precision of adjusting spacing washer 4 has been guaranteed.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "lateral," "inner," "outer," "axial," and the like are used in the orientation or positional relationship shown in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A bone opening device, comprising:

the transmission mechanism comprises a connecting rod assembly and a sleeve, and the connecting rod assembly is coaxially arranged in the sleeve and can slide relative to the sleeve;

the drilling mechanism comprises a cutter holder fixedly connected with the sleeve and a cutter head hinged with the cutter holder through a rotating shaft, a drilling cutter edge and a hole expanding cutter edge are oppositely formed on the cutter head, and one end of the hole expanding cutter edge is hinged with the connecting rod assembly through the rotating shaft; and

the adjusting mechanism is arranged at one end, far away from the drilling mechanism, of the sleeve, and an adjusting part of the adjusting mechanism is connected with the connecting rod assembly and used for driving the connecting rod assembly to slide relative to the sleeve, so that the connecting rod assembly can drive the cutter head to swing relative to the cutter holder.

2. A bone opening device according to claim 1, wherein said linkage assembly comprises: the sliding rod part is sleeved in the sleeve in a sliding mode, and the adjusting part of the adjusting mechanism is connected with the sliding rod part; and the two ends of the driving rod part are respectively hinged with the end part of the sliding rod part and one end of the reaming cutting edge through a rotating shaft.

3. A bone opening device according to claim 2, wherein said driving rod portion includes two rod portions disposed opposite each other on either side of said sliding rod portion and forming a hinge with said sliding rod portion.

4. A bone tapping device according to claim 2, wherein said adjustment mechanism comprises a housing and two adjustment gears oppositely disposed in said housing by means of a shaft, wherein said housing is fixed to an end of said sleeve remote from said drilling mechanism, and wherein said housing and said sleeve each have an adjustment opening formed on opposite sides thereof, said adjustment openings on the same side being located in corresponding positions; the two adjusting gears are respectively arranged at the adjusting opening and meshed with the sliding rod part.

5. The bone opening device of claim 4, wherein a first graduation mark is formed on an outer wall surface of said housing at said adjustment opening, and wherein a reference graduation mark is formed on said adjustment gear to cooperate with said first graduation mark.

6. A bone opening device according to any of the claims 1-5, wherein the tool holder is configured as a tubular structure coaxially connected to the sleeve, the tubular structure being formed at an end thereof connected to the tool bit with a groove extending transversely through the tubular structure, the tool bit being mounted in the groove and forming an articulation therewith, wherein the drilling means is configured to: under the drive of the connecting rod assembly, the cutter head can swing relative to the cutter holder through the groove, and meanwhile, the cutter head can be stored in the cutter holder through the groove.

7. A bone opening device according to any of claims 1 to 5, wherein said drilling edge is configured as at least two transverse cutting edges formed at one end of said cutter head, transversely and angularly, and said reaming edge is configured as at least two radial cutting edges formed radially at the other end of said cutter head.

8. A bone tapping device according to any one of claims 1 to 5 wherein the outer peripheral wall of the sleeve between the adjustment means and the drilling means is provided with a stop washer, said stop washer being spaced a predetermined distance from the drilling means.

9. A bone opening device according to claim 8, wherein the outer wall surface of the sleeve is formed with a threaded portion, the stop washer being configured to form a threaded connection with the threaded portion.

10. A bone opening device according to claim 9, wherein the outer face of said sleeve is further formed with second graduations in the axial direction.