Bone stabilizing type femoral head extractor
阅读说明:本技术 稳骨式股骨头取出器 (Bone stabilizing type femoral head extractor ) 是由 丁勇 祝丰奎 刘振宇 喻一东 孙瑞泽 马秋野 陈林 官煜超 杨利 于 2020-06-03 设计创作,主要内容包括:本发明公开了一种稳骨式股骨头取出器,包括外筒、内套于外筒内的取骨钻杆和锁紧件,所述外筒前端具有头部,所述头部前端设有固定齿牙,所述取骨钻杆前端为使用时可向前伸出外筒头部的自攻螺旋钻近端,尾端向后伸出外筒后端并用于被操控转动,所述锁紧件用于锁止或解锁外筒和取骨钻杆,使得二者形成传动配合状态或自由转动状态。本发明通过外筒利于稳定股骨头并对股骨头定位,同时外筒作为通道利于取骨钻杆直接经手术切口进入至股骨头处,外筒同时也作为导向作用,利于取骨钻杆稳定、精确的钻入待取骨头内;外筒与取骨钻杆形成传动配合,通过驱动取骨钻杆带动外筒和股骨头转动,利于使得连接于股骨头的韧带断裂,便于股骨头的取出。(The invention discloses a bone stabilizing type femoral head extractor which comprises an outer barrel, a bone taking drill rod and a locking member, wherein the bone taking drill rod is sleeved in the outer barrel in an inner mode, the front end of the outer barrel is provided with a head, the front end of the head is provided with fixed teeth, the front end of the bone taking drill rod is a self-tapping spiral drill near end capable of extending out of the head of the outer barrel forwards in use, the tail end of the bone taking drill rod extends out of the rear end of the outer barrel backwards and is used for being controlled to rotate, and the locking member is used for locking or unlocking the outer barrel and the bone taking drill. The outer barrel is favorable for stabilizing and positioning the femoral head, meanwhile, the outer barrel is used as a channel for facilitating a bone taking drill rod to directly enter the femoral head through an operation incision, and the outer barrel is also used as a guide function for facilitating the bone taking drill rod to stably and accurately drill into the bone to be taken; the outer barrel and the bone taking drill rod form transmission fit, the bone taking drill rod is driven to drive the outer barrel and the femoral head to rotate, ligament connected to the femoral head is broken, and the femoral head can be taken out conveniently.)
1. A bone stabilization type femoral head extractor is characterized in that: including urceolus, endotheca get bone drilling rod and retaining member in the urceolus, the urceolus front end has the internal diameter grow and is used for the head of overcoat in the femoral head in order to stabilize the femoral head, the head front end is equipped with fixed tooth, get the self tapping auger near-end that bone drilling rod front end can stretch out the urceolus head forward when using, the tail end stretches out the urceolus rear end backward and is used for being controlled the rotation, the retaining member is used for locking or unblock urceolus and gets the bone drilling rod for the two forms transmission fit state or free rotation state.
2. The femoral head extractor of claim 1, wherein: the outer barrel is sleeved with the holding sleeve in a clearance fit mode, and a blocking table is fixedly arranged on the outer barrel and can be meshed with or separated from the front end of the holding sleeve.
3. The femoral head extractor of claim 2, wherein: the locking part is a locking sleeve sleeved on the outer barrel, a meshing part is fixedly arranged on the part, exposed out of the tail end of the outer barrel, of the bone taking drill rod, and the locking sleeve can be driven to axially slide along the axial direction of the outer barrel with single degree of freedom and form meshing with the meshing part.
4. The femoral head extractor of claim 3, wherein: the locking sleeve is engaged with the engaging part in a one-way manner, and the engaging direction is consistent with the drilling direction of the bone taking drill rod.
5. The femoral head extractor of claim 2, wherein: one end of the holding sleeve, which is axially close to the stop head, is provided with an engaging groove matched with the outer contour of the stop head, and the holding sleeve can be engaged with the stop table for transmission and can impact the stop table when axially sliding.
6. The femoral head extractor of claim 1, wherein: the outer cylinder head is cylindrical, the front end of the cylindrical shape is formed by a plurality of arc-shaped grooves which are adjacent in sequence, and the fixed teeth are distributed in the arc-shaped grooves.
7. The femoral head extractor of claim 6, wherein: the number of the arc-shaped grooves is four.
8. The femoral head extractor of claim 1, wherein: the tail end of the bone taking drill rod is approximately vertical to the bone taking drill rod and is provided with an intermediate connecting part; the driving rod is hinged with the middle connecting part in a single degree of freedom, the middle connecting part is further provided with a containing groove for containing the driving rod, and the driving rod is contained in the containing groove after rotating around a hinged point and forms a manual driving end of a T-shaped structure together with the bone taking drill rod; the engaging portion may be fixed to the intermediate connection portion or formed integrally with the intermediate connection portion.
9. The femoral head extractor of claim 1, wherein: the tail part of the bone taking drill rod is arranged into an electric drill connecting part which can be connected with an electric drill chuck.
10. The femoral head extractor of claim 1, wherein: the bone taking drill rod is provided with scales for controlling the drilling depth, and the scales are positioned at the outer circle position of the tail part of the bone taking drill rod, which is close to the bone taking drill rod.
Technical Field
The invention relates to the technical field of orthopedics, in particular to a bone-stabilizing femoral head extractor.
Background
The artificial joint replacement has satisfactory effect on treating femoral head necrosis, femoral neck fracture with obvious displacement and old femoral neck fracture at present, the disability rate caused by the diseases is greatly reduced, and the femoral head extraction is an important step in the operation process and is based on the hip joint anatomical structure. The femoral head is difficult to remove and cannot be completely removed at one time (because the removal device cannot be accurately positioned) in the process of clinical operation. Undoubtedly, operation time is wasted, the operation is overall long, operation time is long, operation complication risks are increased to a certain extent, how to quickly and accurately take out the femoral head is the problem needing to be solved in the operation technology at present, so a bone stabilization type femoral head extractor is needed, and the femoral head can be quickly and accurately taken out through the device.
Disclosure of Invention
In view of this, the invention provides a bone stabilization type femoral head extractor, which is beneficial to efficiently and quickly extracting the femoral head.
The invention relates to a bone stabilizing type femoral head extractor which comprises an outer barrel, a bone taking drill rod and a locking member, wherein the bone taking drill rod is sleeved in the outer barrel in an inner mode, the front end of the outer barrel is provided with a head part with the inner diameter enlarged and used for being sleeved on a femoral head to stabilize the femoral head, the front end of the head part is provided with fixed teeth, the front end of the bone taking drill rod is a self-tapping spiral drill near end capable of extending out of the head part of the outer barrel forwards in use, the tail end of the bone taking drill rod extends out of the rear end of the outer barrel backwards and is used for being controlled to rotate, and the.
The outer barrel is sleeved with the holding sleeve in a clearance fit mode, and a blocking table is fixedly arranged on the outer barrel and can be meshed with or separated from the front end of the holding sleeve.
Furthermore, the locking part is a locking sleeve sleeved on the outer barrel, a meshing part is fixedly arranged at the part, exposed out of the tail end of the outer barrel, of the bone taking drill rod, and the locking sleeve can be driven to axially slide along the axial direction of the outer barrel with a single degree of freedom and form meshing with the meshing part.
Further, the engagement formed between the locking sleeve and the engagement part is one-way engagement, and the engagement direction is consistent with the drilling direction of the bone taking drill rod.
Furthermore, one end of the holding sleeve, which is axially close to the stop head, is provided with an engaging groove matched with the outer contour of the stop head, and the holding sleeve can be engaged with the stop table for transmission and can impact the stop table when axially sliding.
Further, the head of the outer cylinder is cylindrical, the front end of the cylindrical shape is formed by a plurality of arc-shaped grooves which are adjacent in sequence, and the fixed teeth are distributed in the arc-shaped grooves.
Further, the number of the arc-shaped grooves is four.
Further, the tail end of the bone taking drill rod is approximately vertical to the bone taking drill rod and is provided with an intermediate connecting part; the driving rod is hinged with the middle connecting part in a single degree of freedom, the middle connecting part is further provided with a containing groove for containing the driving rod, and the driving rod is contained in the containing groove after rotating around a hinged point and forms a manual driving end of a T-shaped structure together with the bone taking drill rod; the engaging portion may be fixed to the intermediate connection portion or formed integrally with the intermediate connection portion.
Further, the bone removal drill rod tail portion is configured as an electric drill connection portion connectable to an electric drill chuck.
Furthermore, the bone taking drill rod is provided with scales for controlling the drilling depth, and the scales are positioned at the outer circle part of the tail part of the bone taking drill rod.
The invention has the beneficial effects that:
according to the invention, the head part of the outer cylinder is beneficial to stabilizing and positioning the femoral head, the inner diameter of the head part of the outer cylinder is enlarged and is adapted to the femoral head, so that the diameter of the main body part of the outer cylinder is not too large to be adapted to a thinner bone taking drill rod, the assembly requirement of the outer cylinder and the bone taking drill rod is considered, the matching requirement of the outer cylinder and the femoral head is also ensured, and the thinner main body part of the outer cylinder is beneficial to being adapted to the size of the holding sleeve so as to meet the requirement of manual; meanwhile, the outer cylinder is used as a channel to facilitate the bone taking drill rod to directly enter the femoral head through an operation incision, and the outer cylinder also has a guiding function to facilitate the bone taking drill rod to stably and accurately drill into the bone to be taken; the outer cylinder is in transmission fit with the bone taking drill rod, the outer cylinder and the femoral head are driven to rotate by driving the bone taking drill rod, so that ligament connected to the femoral head is broken, the femoral head can be conveniently taken out, the structure is convenient to operate, the bone taking efficiency is high, the outer cylinder and the bone taking drill rod are supplemented, and the bone taking process is simplified;
the outer barrel is favorably positioned by arranging the holding sleeve, so that the outer barrel has a stable supporting effect and the rotation of the outer barrel is not influenced; the overcoat cooperation lock sleeve can be so that get bone drilling rod and urceolus and realize the one-way transmission cooperation, when getting bone operation final step promptly, make meshing groove and meshing tooth meshing, it drives urceolus and femoral head together to rotate to get the bone drilling rod through rotating, make the ligament fracture of connecting in the femoral head, do benefit to the synchronous taking out of femoral head, but get bone drilling rod alone antiport does benefit to the adjustment of getting the bone drilling rod and creeping into the degree of depth, the lock sleeve overcoat is in the urceolus, the accessible grips cover cooperation drive lock sleeve, do benefit to one-hand operation, the operation process is simplified, and the operation efficiency is improved.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the retaining member;
FIG. 3 is a schematic view of a structure of the driving rod rotating into the accommodating groove;
FIG. 4 is a schematic structural view of another embodiment of the bone-removing drill rod;
FIG. 5 is a schematic structural view of another embodiment of the retaining member;
Detailed Description
FIG. 1 is a schematic view of the overall structure of the present invention; FIG. 2 is a schematic view of the retaining member; FIG. 3 is a schematic view of a structure of the driving rod rotating into the accommodating groove; FIG. 4 is a schematic structural view of another embodiment of the bone-removing drill rod; FIG. 5 is a schematic structural view of another embodiment of the retaining member;
as shown in the figure: the bone stabilizing type femoral head extractor comprises an
The head of the outer cylinder is one end which is in contact with a femoral head and is drilled, the free rotation state represents that the outer cylinder or the bone taking drill rod does not affect each other when rotating, as shown in the combined
In the embodiment, the device further comprises a
The locking part is a
In this embodiment, the head of the outer cylinder is cylindrical, the front end of the cylindrical shape is formed by a plurality of arc-shaped grooves which are adjacent in sequence, and the fixed teeth are distributed in the arc-shaped grooves. Referring to fig. 1, the front end of the outer cylinder is provided with curved arc grooves, and a wave crest structure is formed between adjacent arc grooves to form a wave-shaped structure; the fixed teeth are arranged in the arc-shaped grooves, so that sharp-pointed structures are formed at wave crests, the wave crests serve as a plurality of force points, stable meshing of the front end of the outer barrel and the outer surface of the femoral head is facilitated, the outer barrel and the femoral head can be better fixed, and the stability during bone drilling is improved.
In the embodiment, the head of the outer barrel is provided with four arc-shaped grooves to form four sharp tooth-shaped structures, so that stable occlusion can be formed with the peripheral direction of the femoral head, and the femoral head can be locked well by combining with the fixed teeth.
In the embodiment, the tail end of the bone taking drill rod is approximately vertical to the bone taking drill rod and is provided with an
In this embodiment, the end of the bone removal drill stem is configured as a drill connection 8 to which a drill chuck may be connected. Combine fig. 4 to show, get the bone drilling rod in fig. 4 and be the electric drive structure, in this embodiment, electric drill connecting portion are the hexagon columnar body, do benefit to and use with standard electric drill chuck is supporting, and the concrete structure of electric drill connecting portion can carry out corresponding adjustment according to actual electric drill chuck structure, does benefit to through this structure to get the bone drilling rod rotation of electric drill drive for drilling speed improves and gets bone efficiency.
In this embodiment, the bone taking drill rod is provided with scales for controlling the drilling depth, and the scales are located at the outer circle position of the tail part of the bone taking drill rod. The scale is preferably in mm, and the control of the drilling depth of the bone taking drill rod is facilitated through the scale. The bone taking drill rod is divided into a plurality of scale areas by different colors near the outer circle of the tail part. Referring to fig. 1, the tail of the bone drill rod is axially divided into three continuous scale areas, namely a green area 10a, a yellow area 10b and a
in this embodiment, a
As shown in fig. 5, it is another embodiment of the locking member, wherein the locking member is an outer locking sleeve 11 sleeved on the tail of the bone-taking drill rod, the outer locking sleeve is in single-degree-of-freedom axial sliding fit with the bone-taking drill rod, the opposite end of the outer locking sleeve and the
finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
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