Patella resection forceps
阅读说明:本技术 髌骨切除钳 (Patella resection forceps ) 是由 王俊文 于 2019-08-30 设计创作,主要内容包括:本发明公开了一种髌骨切除钳,包括相互铰接的第一元件和第二元件,第一元件和第二元件分别具有手柄端和作业端,第一元件的作业端和第二元件的作业端整体上具有弧形结构以与髌骨配合,其中第一元件的作业端设有夹钳锯齿,第二元件的作业端设有从外向内贯穿第二元件的锯片槽,手术时锯片穿过锯片槽对髌骨进行作业。本发明公开的髌骨切除钳能够较为精确地定位髌骨切除位置,且操作便捷,能够减少术者误操作概率。(The invention discloses a pair of patella resectioning forceps, which comprises a first component and a second component which are hinged with each other, wherein the first component and the second component are respectively provided with a handle end and a working end, the working end of the first component and the working end of the second component are integrally provided with arc structures to be matched with a patella, the working end of the first component is provided with forceps saw teeth, the working end of the second component is provided with a saw blade groove which penetrates through the second component from outside to inside, and a saw blade penetrates through the saw blade groove to operate the patella during operation. The patella resectioning forceps disclosed by the invention can be used for accurately positioning the patella resectioning position, is convenient and fast to operate and can be used for reducing the misoperation probability of an operator.)
1. The patellar resectioning forceps are characterized by comprising a first component and a second component which are hinged to each other, wherein the first component and the second component are respectively provided with a handle end and a working end, the working end of the first component and the working end of the second component are integrally provided with arc structures to be matched with a patella, clamping saw teeth are arranged at the working end of the first component, and a saw blade groove penetrating through the second component from outside to inside is formed in the working end of the second component.
2. The patellar resectioning forceps according to claim 1, wherein the first and second components are hinged by a stepped threaded nail having an upper portion forming two annular projections with an annular groove formed therebetween.
3. The patellar resectioning forceps according to claim 1, wherein the first element includes a first lever and a first link, the second element includes a second lever and a second link, one end of the first link is connected with the first lever, the other end of the first link is used for patellar operation, one end of the second link is connected with the second lever, the other end of the second link is used for patellar operation, and the second lever is hinged with the first lever, and the second link is hinged with the first link.
4. The patellar resectioning forceps according to claim 3, further comprising a locking rod and a slide lock, wherein both ends of the locking rod are mounted on the first lever and the second lever, respectively, and one end of the first link or the second link is movable along the locking rod,
the sliding lock comprises at least one protruding part or recessed part arranged on the locking rod and a matching part arranged on the first connecting rod or the second connecting rod, and the patella resectoscope is enabled to enter a locking state by blocking the movement of the first lever or the second lever through the matching of the protruding part or the recessed part and the matching part.
5. The patellar resectioning forceps according to claim 4, further comprising a locking knob disposed on the locking rod for further locking the relative positions of the first and second levers.
6. The patellar resectioning forceps according to claim 5, wherein one end of the locking rod is fixed to an end of the first lever not connected to the first link, an end of the second lever not connected to the second link is provided with a mounting groove, and the other end of the locking rod is fitted with the mounting groove and provided with the locking knob.
7. The patellar resectioning forceps according to claim 4, wherein the slide lock includes a plurality of ratchet projections provided on the lock lever, the plurality of ratchet projections being capable of snapping into the bottom of the mounting slot.
8. The patellar resectioning forceps according to claim 4, wherein two elastic pieces are arranged in a crossed manner between the first lever and the second lever, one ends of the two elastic pieces are connected in a crossed manner, and the other ends of the two elastic pieces are respectively fixedly connected with the first lever and the second lever.
9. The patellar resectioning forceps according to claim 2, wherein a pen needle is provided on the patellar resectioning forceps, the pen needle being mounted in the annular groove to indicate patellar resectioning thickness.
10. The patellar resectioning forceps according to claim 4, wherein a pin is provided on the patellar resectioning forceps, the first connecting rod and the second connecting rod of the patellar resectioning forceps are hinged through a tower-shaped threaded nail, two annular protrusions are formed on the upper portion of the tower-shaped threaded nail, an annular groove is formed between the two annular protrusions, and the pin is clamped in the annular groove and rotates around the tower-shaped threaded nail.
Technical Field
The invention relates to the field of medical instruments, in particular to a patella resectioning forceps.
Background
The patella is located in front of the knee joint, commonly known as the patella, and is a flat bone that approximates a triangle. The back of the patella is covered with cartilage which is connected with the patellar surface of the femur, the front side surface is rough, and the quadriceps femoris muscle tendon passes through the cartilage. The kneecap can protect the knee joint, especially the kneecap surface and the femoral condyle of the femur, and can enable the kneecap ligament to be far away from the axis, increase the action moment of the quadriceps femoris, and reduce the required force when stretching the knee.
Clinically, when the patella femoral osteoarthritis and the lateral patella clamping and pressing syndrome are treated and knee joint replacement surgery is carried out, partial patella resection and drilling are a relatively effective treatment mode. Because the patella presents irregular shape, the accurate quantification of the amount of osteotomy of patella part cutting and the accurate positioning difficulty of the drilling position are great. Improper operation may result in poor patellar tracking and secondary injury. The operation degree of difficulty of current operation instrument is great, and the location is accurate enough, needs a kneecap bone operation instrument that can use conveniently, fixes a position accurately urgently.
Disclosure of Invention
The invention aims to provide a pair of patella resectioning forceps which is convenient to use and accurate in positioning, so as to solve the technical problems.
In order to solve the technical problem, the invention provides a pair of patella resectioning forceps, which comprises a first component and a second component which are hinged to each other, wherein the first component and the second component are respectively provided with a handle end and a working end, the working end of the first component and the working end of the second component are integrally provided with an arc-shaped structure so as to be matched with a patella, the working end of the first component is provided with clamping saw teeth, and the working end of the second component is provided with saw blade grooves which penetrate through the second component from outside to inside. The saw blade passes through the saw blade slot to operate the patella during operation.
In one embodiment, the first and second elements are hinged by a tower-shaped screw nail, the upper part of which forms two annular projections, between which an annular groove is formed.
In one embodiment, the first element comprises a first lever and a first link, the second element comprises a second lever and a second link, one end of the first link is connected with the first lever, the other end of the first link is used for patellar operation, one end of the second link is connected with the second lever, the other end of the second link is used for patellar operation, and the second lever is hinged with the first lever and the second link is hinged with the first link.
In one embodiment, the patella resectioning forceps further comprises a locking rod and a slide lock, wherein two ends of the locking rod are respectively arranged on the first lever and the second lever, and one end of the first connecting rod or one end of the second connecting rod can move along the locking rod,
the sliding lock comprises at least one protruding part or recessed part arranged on the locking rod and a matching part arranged on the first connecting rod or the second connecting rod, and the patella resectoscope is enabled to enter a locking state by blocking the movement of the first lever or the second lever through the matching of the protruding part or the recessed part and the matching part.
In one embodiment, the patella resectioning forceps further comprises a locking knob disposed on the locking rod for further locking the relative positions of the first lever and the second lever.
In one embodiment, one end of the locking rod is fixed on the end of the first lever, which is not connected with the first connecting rod, the end of the second lever, which is not connected with the second connecting rod, is provided with a mounting groove, and the other end of the locking rod is matched with the mounting groove and is provided with the locking knob.
In one embodiment, the slide lock includes a plurality of ratchet protrusions provided on the locking lever, the plurality of ratchet protrusions being capable of snapping into the bottom of the mounting groove.
In one embodiment, two elastic pieces which are arranged in a crossed manner are arranged between the first lever and the second lever, one ends of the two elastic pieces are connected in a crossed manner, and the other ends of the two elastic pieces are respectively fixedly connected with the first lever and the second lever.
In one embodiment, the patella resectioning forceps is provided with a pen needle which is mounted in the annular groove to indicate the patella resectioning thickness.
In one embodiment, the patella resectioning forceps is provided with a pin, the first connecting rod and the second connecting rod of the patella resectioning forceps are hinged through a tower-shaped threaded nail, two annular bulges are formed on the upper portion of the tower-shaped threaded nail, an annular groove is formed between the two annular bulges, and the pin is clamped in the annular groove and rotates around the tower-shaped threaded nail.
The patella resectioning forceps adopt a structure of a lever and a connecting rod, and greatly enhance the engagement force of the operating end of the connecting rod. In addition, this patella resectoscope adopts the slip lock to lock, can lock fast and unblock, the simple operation.
The patella resectioning forceps further comprise a locking rod, and the locking rod is arranged on the first lever and the second lever; and the locking knob is arranged on the locking rod and used for further locking the relative position of the first lever and the second lever. This arrangement provides a dual locking arrangement for the patella resectioning forceps with a slide lock and a lock knob lock. When the position of the patella resectioning clamp is initially adjusted, an operator firstly adopts the sliding lock to simply lock, continuously checks whether the position of the patella resectioning clamp is proper or not, and screws the locking knob to provide final locking if the position is proper. This arrangement improves the positioning accuracy of the patella resectioning forceps and reduces the probability of misoperation of the operator.
The sliding lock is arranged into a plurality of bulges on the locking rod, and the arrangement integrates all parts of the patella resectioning forceps, so that the compactness of the structure is improved.
The sliding lock is arranged as a ratchet wheel protrusion on the locking rod, and the arrangement enables the patella resectioning forceps to move towards an unlocking state under larger resistance when the patella resectioning forceps are in a simple locking state locked by the sliding lock, so that the locking effect is enhanced.
The first lever and the second lever are provided with a first elastic sheet, the first lever and the second lever are provided with a second elastic sheet, the first elastic sheet and the second elastic sheet are arranged on the first lever and the second lever respectively, and the second elastic sheet is arranged on the second lever. The setting makes the operation end of the patella resectioning forceps connecting rod keep an opening state under the natural state, and the use is convenient.
One end of the first connecting rod of the patella resectioning forceps is provided with a forceps sawtooth, and one end of the second connecting rod of the patella resectioning forceps is provided with a saw blade groove. The provision of the clamping serrations enables the patella resectioning clamp to grip the patella more firmly. The provision of the blade slots enables the patella resectioning forceps to provide guidance for the patella osteotomy.
The patella resectioning forceps are provided with pen needles for indicating the patella resectioning thickness. This arrangement enables the patella resectioning forceps to accurately control the amount of osteotomy.
The first connecting rod and the second connecting rod of the patella resectioning forceps are hinged through a tower-shaped threaded nail, and the pen needle is detachably buckled on the tower-shaped threaded nail. The arrangement enables an operator to adjust the height of the pen needle more conveniently.
In conclusion, the patella resectioning forceps disclosed by the invention can accurately position the patella resectioning and punching positions, is convenient and fast to operate, and can reduce the misoperation probability of an operator.
Drawings
FIG. 1 is a perspective view of a patellar resectioning forceps in accordance with one embodiment of the present invention;
FIG. 2 is an exploded perspective view of the patellar resectioning forceps of FIG. 1;
fig. 3 is a perspective view of another embodiment of a patella resectioning forceps of the present disclosure.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solutions of the present invention.
In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.
In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.
The patella resectioning forceps generally comprise a first component and a second component which are hinged with each other, wherein the first component and the second component are respectively provided with a handle end and a working end, the working end of the first component and the working end of the second component are integrally provided with arc structures to be matched with the patella, the working end of the first component is provided with forceps saw teeth, the working end of the second component is provided with a saw blade groove which penetrates through the second component from outside to inside, and a saw blade penetrates through the saw blade groove to perform patella operation during operation. The first and second elements may each be one piece or may be constructed of several parts connected to each other. For example, in the embodiment of the invention shown in fig. 1-2, the first element may comprise a
Fig. 1 and 2 are perspective and exploded views, respectively, of a patella resectioning forceps 100 in accordance with an embodiment of the present invention. As shown in fig. 1-2, the
The ends of the first connecting
With continued reference to fig. 1-2, the rear ends of the first and
The patella resectioning forceps are also provided with a slide lock 6. In the present embodiment, the slide lock 6 is at least one protruding portion or recessed portion provided along the traveling track of the locked object on the side of the traveling direction of the locked object, and the locked object is blocked by the protruding portion protruding into the moving path of the locked object to enter the locked state, or the locked object is blocked by the locked object protruding into the recessed portion to enter the locked state. Wherein the slide lock 6 is used for initially locking the patella resectioning forceps and the locking knob 7 is used for further locking the patella resectioning forceps. Specifically, when the operator preliminarily adjusts the position of the patella resectioning forceps, firstly, the sliding lock 6 is adopted for simple locking, whether the position of the patella resectioning forceps is suitable or not is continuously checked, and if the position is suitable, the locking knob 7 is screwed down to provide final locking. The arrangement can improve the positioning precision of the patella resectioning forceps and reduce the misoperation probability of an operator.
In the embodiment of fig. 1 and 2, a preferred embodiment of the slide lock 6 is shown, i.e. the slide lock 6 is arranged on the
In one embodiment, the slide latch 6 may also be provided as a plurality of ratchet protrusions evenly distributed along the axial direction of the
In one embodiment, two crossed
In one embodiment, the end of the
In one embodiment, the
In operation, the thickness of the patella is first measured and the osteotomy thickness of the patella is evaluated. And adjusting the scale of the pen needle to adjust the bone cutting amount to a required value. The scale of the stylus represents the amount of osteotomy, which should be of a value consistent with the thickness of the patellar component to be implanted. The pen pins are snapped onto the
The lower limb is then straightened and the patella is everted. The assembled
As shown in fig. 3, the
The
A preferred embodiment of the
It will be appreciated that the
With reference to fig. 3, a pair of
The working
In one embodiment, the
In operation, the thickness of the patella is first measured and the osteotomy thickness of the patella is evaluated. And adjusting the scale of the pen needle to adjust the bone cutting amount to a required value. The scale of the stylus represents the amount of osteotomy, which should be of a value consistent with the thickness of the patellar component to be implanted. The pen pins are snapped onto the
The lower limb is then straightened and the patella is everted. The assembled
From the foregoing, it can be seen that the
While preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
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