CN210749404U - Medullary core bone forceps device for femoral head necrosis operation - Google Patents

Abstract

The utility model discloses a bone forceps device is got with marrow core to femoral head necrosis operation, it includes that cross-hinged is together upper and lower pincers handle, pincers handle tip is the binding clip, opens and shuts the pincers handle afterbody, can make the binding clip to closing, the binding clip be the arc slice, upper and lower binding clip is provided with the opening towards the arc recess face at interlock center, the recess face with binding clip vertically cross sectional shape be the circular arc, the recess face of upper and lower binding clip can encircle the cylinder between upper and lower binding clip, and the pin joint that the pin joint of handle was passed to the axial lead of the cylinder of being embraced, compares current pincers utensil, the binding clip structure special setting of the device, whole long and thin, the degree of opening and shutting is little, constitutes the interlock groove structure of cylindricality, is convenient for stretch into the annular channel that forms through the ring to can be complete take out the bone piece of cylindricality, the loss of the reduction bone mass of furthest.

Description

Medullary core bone forceps device for femoral head necrosis operation

Technical Field

The invention relates to the technical field of medical treatment, in particular to a medullary core bone forceps device for femoral head necrosis operation.

Background art:

femoral head necrosis (ONFH) is a lesion caused by poor local blood circulation of femoral head due to various reasons, so that osteocyte is further ischemic, necrotic, fractured trabecula bone and collapsed femoral head, and collapse and secondary osteoarthritis occur within 1 to 4 years without effective treatment. The etiology of this disease is many, but there are three common etiologies: hormones, wounds and alcohol. The Ficat staging method is mainly adopted clinically, namely, the stage 0 (preclinical stage), the stage I (prophase of imaging science), the stage II (cystic change stage), the stage III (collapse stage) and the stage IV (osteoarthritis stage). For the treatment of this disease, there is no standard method for curing patients of different types and stages. By combining the therapeutic guidelines for femoral head necrosis and a plurality of related literature data, it can be seen that for early patients in Ficat stage I, more satisfactory therapeutic effects are obtained by adopting drug therapy, physical therapy, femoral head medulla decompression and DSA interventional therapy; for patients in the advanced Ficat stage IV, joint replacement is consistently considered by clinical experts as its most effective treatment; however, for the patients with femoral head necrosis in the Ficat II and Ficat III stages, especially young patients, most of which are eager for head protection treatment without joint replacement, the related literature shows that the methods for head protection treatment of such patients are many and are generally summarized into three categories, namely, medullary decompression, bone grafting (with/without blood vessels) and osteotomy, wherein the medullary decompression is performed by combining autologous bone marrow cell transplantation, Bone Morphogenetic Protein (BMP) implantation or tantalum rod implantation; the bone grafting is mainly treated by fibula grafting with blood vessels, ilium grafting with blood vessels, striking bone grafting by scraping and pressing through a femoral neck fenestration, bulb-shaped decompression bone grafting through a femoral head neck and bone grafting by turning cover fenestration; the osteotomy is usually performed by means of varus or valgus osteotomy or transtrochanteric rotation osteotomy.

The marrow core decompression operation is convenient to operate, the cost is low, the wound is small, however, after a special guide trepan (multi-model) system for marrow core decompression is applied, an approximately free double-ring-shaped cylindrical bone block can be generated in a femoral neck, the purpose of the bone extractor is to completely take out the double-ring-shaped cylindrical bone block from the top end of a femoral head, the double-ring-shaped cylindrical bone block is used as a replantation bone after bone grafting is pressed, sufficient support and strength are provided, further collapse of the femoral head is prevented, the existing bone taking forceps body is a common surgical forceps, the space for stretching the forceps body into the bone is very small, the operation is inconvenient, the clamping position is too short, the cylindrical bone block is stressed unevenly, a long cylindrical bone is broken easily, and the completeness of the replantation bone is not facilitated.

Disclosure of Invention

The utility model aims at providing a structural design is reasonable, convenient operation, and the special medullary core that is handled to the femoral head department cylinder bone after being sawed gets bone tongs device, but furthest's retention is got the integrality of bone.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

a medullary core bone taking clamp device for femoral head necrosis operation comprises an upper clamp handle and a lower clamp handle which are hinged together in a crossed mode, wherein clamp heads are arranged at the end portions of the clamp handles, the tail portions of the clamp handles are opened and closed, the clamp heads can be closed, the clamp handles comprise a ring handle, a long and thin linear clamp neck and a long and thin linear clamp head, when the clamp heads extend into a space outside a cylindrical bone, the clamp neck on the same clamp handle is parallel to the clamp heads, when the clamp heads extend into the space outside the cylindrical bone, the clamp heads of the two clamp handles are parallel, the clamp heads are arc-shaped sheets, the upper clamp head and the lower clamp head are provided with arc-shaped groove surfaces with openings facing to an occlusion center, the cross section of each groove surface is arc-shaped, the cylindrical bodies can be embraced between the upper clamp head and the lower clamp head through the axial line of the encircled cylindrical bodies, and the axial direction of the cylindrical bodies is consistent with the length.

The slender and linear tong head has a side-view visual effect as shown in fig. 1, and the cross-sectional shape of the tong head 2 is an A-direction view as shown in fig. 2.

The groove surface of the binding clip is a rough surface, the length of the groove surface is greater than the width of the groove surface, the width of the groove surface is smaller than the diameter of a bone to be taken, friction between the groove surface and a contact object is increased conveniently, a bone column is held in a holding mode, and the surface of the outer wall of the binding clip is a smooth surface.

Furthermore, the end edges of the forceps heads are concave inwards to form occlusion teeth, and after the upper forceps head and the lower forceps head are closed, the occlusion teeth can clamp the surface layer of the bone column, so that the bone column can be taken out conveniently.

The clamp comprises a cylindrical barrel, a plurality of clamp heads and clamp bodies, wherein the clamp heads are arranged in the cylindrical barrel, the clamp heads are arranged in the clamp bodies, the.

The pincers neck on same pincers handle is parallel with the binding clip, and the end of pincers neck passes through the one end fixed connection of hinge bar and binding clip, and the hinge bar middle part of two pincers handles is articulated, and when the binding clip stretched into the outer space of cylinder bone, the binding clip of two pincers handles was parallel, and the maximum distance of two hinge bars is less than the maximum distance of two binding clips.

The utility model discloses a theory of operation does: carry out the annular face through annular drilling tool on the femoral head and cut according to, form annular space passageway, stretch into along the space through the long and thin binding clip of present case for the cylindrical bone of whole concave surface environmental protection, this device of clockwise rotation makes the innermost connection position separation of cylindrical bone, takes out the bone piece is complete.

The utility model has the advantages that:

compare current pincers utensil, the device's binding clip structure special setting constitutes long cylindricality's interlock groove structure, and whole device is long and thin to be set up, and the degree of opening and shutting is little, is convenient for stretch into the annular channel that forms through annular drilling tool to the centre gripping is accomplished to the less angle of opening and shutting of accessible, and the complete bone piece of cylindricality in the annular narrow space of taking out, and the loss of maximum reduction bone mass guarantees the integrality of replanting bone, can effectively prevent the femoral head and sink.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the jaw of FIG. 1 taken along line A-A;

fig. 3 is a reference diagram of the device in use.

1-ring handle, 2-clamp head, 3-groove surface, 4-end edge and 5-clamp neck.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

The medullary core bone taking forceps device for the femoral head necrosis operation comprises an upper forceps handle and a lower forceps handle which are hinged together in a crossed mode, wherein the end portion of each forceps handle is provided with a forceps head 2, the tail portion of each forceps handle is opened and closed, the forceps heads 2 can be oppositely combined, and the medullary core bone taking forceps device is characterized in that: the forceps handles comprise a ring handle 1, a slender linear forceps neck 5 and a slender linear forceps head 2, when the forceps head 2 extends into the outer space of the cylindrical bone, the forceps neck 5 on the same forceps handle is parallel to the forceps head 2, when the forceps head 2 extends into the outer space of the cylindrical bone, the forceps heads 2 of the two forceps handles are parallel, the forceps heads 2 are arc-shaped sheets, the upper forceps head 2 and the lower forceps head 2 are provided with arc-shaped groove faces 3 with openings facing to the occlusion center, the cross sections of the groove faces 3 are arc-shaped, the groove faces 3 of the upper forceps head 2 and the lower forceps head 2 can encircle the cylindrical body between the upper forceps head 2 and the lower forceps head 2, and the axis of the encircled cylindrical body penetrates through the hinge point of the forceps handles and is consistent with the length direction of the forceps neck 5.

Groove face 3 of binding clip 2 be the rough surface, the length of groove face 3 is greater than the width of groove face 3, and the width of groove face 3 is less than the diameter of being got the bone, is convenient for increase and the contact object friction, helps grasping the bone post, and the outer wall surface of binding clip 2 is the smooth surface.

Furthermore, the end edge 4 of the forceps head 2 is concave inwards to form an occlusion tooth, and after the upper forceps head and the lower forceps head 2 are closed, the occlusion tooth can clamp the surface layer of the bone column, so that the bone column can be taken out conveniently.

The clamp comprises clamp handles, wherein the whole opening degree is very small in the opening and closing process of the clamp handles, the opening and closing angle of the two clamp handles is smaller than 5 degrees, the relative displacement range of the two clamp heads 2 is small, basically, when the clamp heads 2 extend into the state of the outer annular gap of a cylindrical bone, the maximum width of the two clamp necks 5 and the clamp heads 2 is smaller than the outer diameter of the annular gap, the appearance of the clamp heads 2 is an arc-shaped sheet, the annular gap cut by the annular saw teeth is long and narrow, a clamp body of a common structure cannot extend into the clamp body, the shape of the clamp body is close to that of the cylinder barrel part, the radian is matched with that of a trepan for drilling the bone column, the clamp heads 2 can smoothly enter the gap formed by the trepan, and the inner groove surfaces 3 of the upper clamp head and the lower clamp head 2.

The pincers neck 5 on same pincers handle is parallel with binding clip 2, and the end of pincers neck 5 passes through the one end fixed connection of hinge bar and binding clip 2, and the hinge bar middle part of two pincers handles is articulated, and when binding clip 2 stretched into the outer space of cylinder bone, binding clip 2 of two pincers handles was parallel, and the maximum distance of two hinge bars is less than the maximum distance of two binding clips 2.

The utility model discloses a theory of operation does: cutting the femoral head through an annular drilling tool to form an annular channel, inserting the forceps head of the bone forceps to a femoral head gap along the path of a guide trephine, clamping a cylindrical bone block in the middle of the annular channel, and rotating the forceps body clockwise as shown in figure 3 to completely clamp and take out the bone block; the tong head 2 is actually two sheets which can be opened and closed, just forms a circular ring shape, and can smoothly enter a cavity formed by the annular drilling tool to carry out bone taking operation.

The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A medullary core bone taking forceps device for femoral head necrosis operation comprises an upper forceps handle and a lower forceps handle which are hinged together in a crossed mode, wherein the end portion of each forceps handle is provided with a forceps head, the tail portion of each forceps handle is opened and closed, and the forceps heads can be closed, and the medullary core bone taking forceps device is characterized in that: the clamp handles comprise a ring handle, a long and thin clamp neck and a long and thin clamp head, the clamp neck on the same clamp handle is parallel to the clamp head, when the clamp head extends into the outer space of the cylindrical bone, the clamp heads of the two clamp handles are parallel, the clamp heads are in an arc sheet shape, the upper clamp head and the lower clamp head are provided with arc groove faces with openings facing to the occlusion center, the cross section of each groove face is in an arc shape, the groove faces of the upper clamp head and the lower clamp head can encircle the cylindrical body between the upper clamp head and the lower clamp head, and the axis of the encircled cylindrical body penetrates through the hinge point of the clamp handles and is consistent with the length direction of the clamp neck.

2. The medullary core bone forceps device for femoral head necrosis operation of claim 1, which is characterized in that: the groove surface of the binding clip is a rough surface, the length of the groove surface is greater than the width of the groove surface, the width of the groove surface is smaller than the diameter of a bone to be taken, and the surface of the outer wall of the binding clip is a smooth surface.

3. The medullary core bone forceps device for femoral head necrosis operation of claim 1, which is characterized in that: the end edge of the tong head is concave inwards.

4. The medullary core bone forceps device for femoral head necrosis operation of claim 1, which is characterized in that: the opening and closing angle of the two forceps handles is less than 5 degrees.

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