CN209392075U - A kind of bone plate external member convenient for taking nail - Google Patents

Abstract

The utility model discloses a kind of bone plate external members convenient for taking nail, apply in medical orthopedic instrument field, including bone plate, bone nail and nail-fetching device；Several bone screw holes are offered on bone plate；Integrally formed with counterbore on the inside of bone screw holes；Ring-like through slot, bone screw holes and bone plate are offered between bone screw holes and bone plate passes through at least two bridge pieces connection across ring-like through slot；The screw that bridge piece includes bridge plate and is respectively fixed on bridge plate both ends in bone screw holes and bone plate；Nail-fetching device includes L-type handle, motor and rotary-cut sword；The bottom inside of L-type handle vertical section is arranged in motor, and output shaft stretches out L-type handle and connect with rotary-cut sword；Rotary-cut sword is in be obliquely installed with close, downside on the upside of output shaft far from formula.The utility model fractures there is bone nail on the basis of basic bone-connecting functions can be achieved or when the situation of nut breakage, also very convenient can efficiently take out bone plate and bone nail.

Description

A kind of bone plate external member convenient for taking nail

Technical field

The utility model belongs to medical orthopedic instrument field, and in particular to a kind of bone plate external member convenient for taking nail.

Background technique

On Orthopedic Clinical, two parts of fracture are connected using bone plate and are the common for the treatment of fracture by bone nail fixation Means.It after sclerotin healing, needs to take out bone plate, bone nail, however often there is bone nail to fracture or the situation of nut breakage, Cause surgical staff that can not take out bone nail, or the process of taking-up bone nail is very difficult.

Utility model content

In view of this, being able to achieve base the purpose of this utility model is to provide a kind of bone plate external member convenient for taking nail It is also easy to operate when needing to take out bone plate, bone nail on the basis of this bone-connecting functions.

In order to achieve the above objectives, the utility model provides the following technical solutions:

A kind of bone plate external member convenient for taking nail, including bone plate, bone nail and nail-fetching device；If being offered on the bone plate Dry bone screw holes；Integrally formed with counterbore on the inside of the bone screw holes；The bone nail includes nut and stud；The diameter of the nut is big In counterbore and it is less than bone screw holes；The diameter of the stud is less than counterbore, offers between the bone screw holes and bone plate ring-like logical Slot, bone screw holes and bone plate pass through at least two bridge pieces connection across ring-like through slot；The bridge piece includes bridge plate and divides The screw bridge plate both ends not being fixed in bone screw holes and bone plate；The nail-fetching device includes L-type handle, motor and rotary-cut sword； The bottom inside of L-type handle vertical section is arranged in the motor, and output shaft stretches out L-type handle and connect with rotary-cut sword；It is described Rotary-cut sword is in be obliquely installed with close, downside on the upside of output shaft far from formula.

Preferably, the rotary-cut sword passes through the output axis connection of shaft coupling and motor.

Preferably, sawtooth is equipped on the outside of the rotary-cut sword circumferential direction profile.

Preferably, power supply is additionally provided in the L-type handle, the top of traversing section is equipped with button；The button and power supply, Electrical connection of motor, and the movement and stopping of motor can be directly controlled.

Preferably, the lower section of the L-type handle traversing section is equipped with finger gripping groove.

The utility model has the beneficial effects that: the utility model is on the basis of can be achieved basic bone-connecting functions, There is bone nail to fracture or when the situation of nut breakage, also very convenient can efficiently take out bone plate and bone nail.

Detailed description of the invention

In order to keep the purpose of this utility model, technical scheme and beneficial effects clearer, the utility model provides as follows Attached drawing is illustrated:

Fig. 1 is bone plate and bone nail use state diagram in the utility model；

Fig. 2 is bone plate and partial enlargement diagram when bone nail use state in Fig. 1；

Fig. 3 is to remove structural schematic diagram after bridge piece in Fig. 2；

Fig. 4 is bridge piece structural schematic diagram；

Fig. 5 is to remove structural schematic diagram after bone nail in Fig. 2；

Fig. 6 is Bone nail structure schematic diagram；

Fig. 7 is Section A-A figure in Fig. 3；

Fig. 8 is nail-fetching device structural schematic diagram；

Schematic diagram when Fig. 9 takes nail using nail-fetching device.

It is marked in attached drawing as follows: bone plate 1, bone screw holes 11, counterbore 12, bone nail 2, nut 21, stud 22, nail-fetching device 3, L Type handle 31, motor 32, rotary-cut sword 33, output shaft 32, shaft coupling 34, power supply 35, button 36, finger gripping groove 37, ring-like through slot 4, bridge piece 5, bridge plate 51, screw 52, skeleton 6, fracture line 7.

Specific embodiment

Below in conjunction with attached drawing, the preferred embodiment of the utility model is described in detail.

Such as Fig. 1~8, a kind of bone plate external member convenient for taking nail, including bone plate 1, bone nail 2 and nail-fetching device 3；The synthetism Several bone screw holes 11 are offered on plate 1, illustrate only two in such as 1；11 inside of bone screw holes is integrally formed with counterbore 12；Institute Stating bone nail 2 includes nut 21 and stud 22；The diameter of the nut 22 is greater than counterbore 12 and is less than bone screw holes 11；The stud 22 Diameter be less than counterbore 12, offer ring-like through slot 4 between the bone screw holes 11 and bone plate 1, bone screw holes 11 and bone plate 1 are logical Two bridge pieces 5 connection across ring-like through slot 4 is crossed, Fig. 5 and Fig. 6 can be combined to Fig. 2；The bridge piece 5 includes 51 He of bridge plate The screw 52 in bone screw holes 11 and bone plate 1 is fixed at 51 both ends of bridge plate respectively, i.e. Fig. 3 and Fig. 4 can be combined to Fig. 2；It is described Nail-fetching device 3 includes L-type handle 31, motor 32 and rotary-cut sword 33, such as Fig. 8；31 vertical section of L-type handle is arranged in the motor 32 Bottom inside, output shaft 321 stretch out L-type handle 31 and connect with rotary-cut sword 33；The rotary-cut sword 33 be in on output shaft 321 Side is close, downside is obliquely installed far from formula.

In use, being fitted in bone plate 1 above skeleton 6 across fracture line 7 such as Fig. 1, and will be connect by bone nail 2 Bone plate 1 is fixed on skeleton 6, specially utilizes such as screwdriver tool, nut 21 is sucked, and stud 22 is directed at counterbore 12, then rotary nut 21, until nut 21 is fitted on counterbore 12, to complete to fix, such as Fig. 7 guarantees to realize basic synthetism Function.

When needing to take out bone plate 1, bone nail 2, if fractureing without bone nail or the situation of nut breakage, screw is directly utilized The tools such as knife reversely back-out bone nail 2, so that it may remove bone plate 1.If bone nail occur to fracture or the situation of nut breakage, need Nail, such as Fig. 9 are taken using nail-fetching device 3, motor 32 drives output shaft 321, and then rotary-cut sword 33 is driven to rotate, due to rotary-cut sword 33 Be obliquely installed as described above, therefore it can be tilted towards the stud 22 of bone nail 2 by ring-like through slot 4 and be cut, cut tight depth until Stud 22 is almost switched to, it is then circumferentially cutting around ring-like through slot 4, until the skeleton 6 on 22 periphery of stud is all removed Until, by bone nail 2 completely by removing in skeleton 6, then going out bone nail 2 with tool holders such as tweezers can be (thereon with a small amount of Skeleton 6), bone plate 1 also can smoothly be taken out later.

To sum up, the utility model is on the basis of can be achieved basic bone-connecting functions, fractures or nut there is bone nail When the situation of breakage, also very convenient bone plate and bone nail can be efficiently taken out.

Further, the rotary-cut sword 33 that the present embodiment uses is connect by shaft coupling 34 with the output shaft 321 of motor 32, such as Fig. 8, the design can replace the rotary-cut sword 33 of differing tilt angles by shaft coupling 34, pierce depth to adapt to different bone nails 2 And crack conditions.When replacement, it may be considered that only replacement rotary-cut sword 33 can also set the rotary-cut sword 33 of different size to and join 34 one of axis device, i.e., replace rotary-cut sword 33 and shaft coupling 34 simultaneously.

Further, it is equipped with sawtooth (not shown) on the outside of the circumferential profile of rotary-cut sword 33 that the present embodiment uses, to mention Rotary-cut effect of the high rotary-cut sword 33 to skeleton 6.

Further, power supply 35 is additionally provided in the L-type handle 31 that the present embodiment uses, the top of traversing section is equipped with button 36, such as Fig. 8, after surgical staff taking L-type handle 31, it can directly pass through thumb push button 36；Button 36 and power supply 35, electricity Machine 32 is electrically connected, and can directly control the movement and stopping of motor 32, is arranged for conventional loop, therefore is not repeated its circuit knot Structure.

Further, the lower section for 31 traversing section of L-type handle that the present embodiment uses is equipped with finger gripping groove 37, and such as Fig. 8, this is set Meter can make to be not easy to skid when surgical staff taking L-type handle 31 more firm.

Finally, it is stated that preferred embodiment above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent Pipe has been described in detail the utility model by above preferred embodiment, but those skilled in the art should manage Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details The range of restriction.

Claims (5)

1. a kind of bone plate external member convenient for taking nail, including bone plate, bone nail and nail-fetching device；It is offered on the bone plate several Bone screw holes；Integrally formed with counterbore on the inside of the bone screw holes；The bone nail includes nut and stud；The diameter of the nut is greater than Counterbore and be less than bone screw holes；The diameter of the stud is less than counterbore, it is characterised in that: opens up between the bone screw holes and bone plate There are ring-like through slot, bone screw holes and bone plate to pass through at least two bridge pieces connection across ring-like through slot；The bridge piece includes Bridge plate and the screw being respectively fixed on bridge plate both ends in bone screw holes and bone plate；The nail-fetching device include L-type handle, motor and Rotary-cut sword；The bottom inside of L-type handle vertical section is arranged in the motor, and output shaft stretches out L-type handle and connects with rotary-cut sword It connects；The rotary-cut sword is in be obliquely installed with close, downside on the upside of output shaft far from formula.

2. the bone plate external member according to claim 1 convenient for taking nail, it is characterised in that: the rotary-cut sword passes through shaft coupling With the output axis connection of motor.

3. the bone plate external member according to claim 1 convenient for taking nail, it is characterised in that: outside the rotary-cut sword circumferential direction profile Side is equipped with sawtooth.

4. the bone plate external member according to claim 1 convenient for taking nail, it is characterised in that: be additionally provided in the L-type handle The top of power supply, traversing section is equipped with button；The button and power supply, electrical connection of motor, and the fortune of motor can be directly controlled Dynamic and stopping.

5. the bone plate external member according to claim 1 convenient for taking nail, it is characterised in that: the L-type handle traversing section Lower section is equipped with finger gripping groove.