CN209808460U - Loose-leaf nail, shaft nail and biplane osteotomy guiding device - Google Patents
Loose-leaf nail, shaft nail and biplane osteotomy guiding device Download PDFInfo
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- CN209808460U CN209808460U CN201920290101.5U CN201920290101U CN209808460U CN 209808460 U CN209808460 U CN 209808460U CN 201920290101 U CN201920290101 U CN 201920290101U CN 209808460 U CN209808460 U CN 209808460U
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Abstract
The utility model provides a loose-leaf nail, an axle nail and a biplane osteotomy guiding device, wherein the guiding device is made of metal or alloy and comprises the loose-leaf nail, a positioning pin sighting device and the biplane osteotomy guiding device, and the loose-leaf nail is used for taking out loose-leaf part bone columns; the positioning pin sighting device is used for assisting in positioning an implantation positioning pin to a preset position of the loose-leaf pin; the biplane osteotomy guide device is used for assisting in positioning the loose-leaf pins and the shaft pins, positioning the structures according to bony dissection marks and correctly assembling the structures respectively, and is used for accurately assisting in the insertion of the loose-leaf pins and the shaft pins and the operation of high-position biplane open osteotomy of the tibia. The utility model is simple in operation, instruct accurate directly perceived, require to the operating space less, can guide to carry out the accurate positioning and accomplish the biplane and cut the bone to and the loose-leaf nail is put into to the accuracy, prevent that loose-leaf department fracture complication from appearing, improve the operation effect, make things convenient for clinical application.
Description
Technical Field
The utility model belongs to the technical field of the accurate location direction of biplane osteotomy, especially a loose-leaf nail, axle nail and biplane osteotomy guider in knee joint shin bone high-order open osteotomy operation well loose-leaf nail.
Background
The open type tibia high-position osteotomy is to prop open the inner side of the tibia after the proximal tibia bone is cut off to a certain degree, so that the lower limb force line is moved outwards to an ideal position slightly outside the middle part of the knee joint, and the aim of relieving the pain in the inner side gap is achieved. However, this technique requires a high level of alignment of the osteotomy line, which can result in under-correction or overkill if the osteotomy is not performed at the desired location. The depth of the osteotomy line is also one of the most important factors, fracture complications of the proximal lateral loose-leaf part of the tibia during distraction can be easily caused by over-shallow osteotomy, and the problems of fracture, internal fixation failure and the like can also be caused by over-deep osteotomy. However, no means for precise positioning assistance during this procedure are available, and no means for intervention at the hinge site are available.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a loose-leaf nail, axle nail and biplane cut bone guider for make things convenient for the operation person to carry out the accurate positioning and accomplish in the open osteotomy of high-order biplane of shin bone and cut the bone, and accurately put into the loose-leaf nail, prevent that loose-leaf department fracture complication from appearing, improve the operation effect, make things convenient for clinical application.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
the guide device is made of metal or alloy and comprises a loose-leaf nail, a positioning pin sighting device and a biplane osteotomy guide device, wherein the loose-leaf nail is used for taking out loose-leaf part bone columns; the positioning pin sighting device is used for assisting in positioning an implantation positioning pin to a preset position of the loose-leaf pin; the biplane osteotomy guide device assists in positioning the loose-leaf pins and the shaft pins.
The loose-leaf nail is hollow in body part and is in a long cylindrical shape, and the head end of the loose-leaf nail is provided with sawteeth; the tail end is hollow, the diameter is smaller than that of the head end, and the tail end is hexagonal; the push rod is located the loose-leaf nail hollow part, and push rod head diameter is the same with loose-leaf nail somatic part hollow part, and push rod somatic part diameter is less than the push rod head, is located loose-leaf nail afterbody hollow part, and push rod somatic part tail end part has the internal thread, and push rod afterbody one end is T shape handle, and the other end outband screw thread can match with push rod somatic part tail end internal thread.
The biplane osteotomy guide comprises: the guide device, the positioning pin sighting device, the loose-leaf nail inserting piece, the horizontal positioning rod, the angle osteotomy groove, the press-fit nut, the locking nut and the handle.
The guider is divided into a left side and a right side, is of a long rod-shaped structure with a specific radian and is divided into a head part, a body part and a tail part. The head part is a fibula positioning disc which is in a concave disc shape; the body part is provided with a protruded inserting sheet bolt for fixing the inserting sheet of the loose-leaf nail; the body part is provided with 3 fixing holes with the diameter of 2 mm; the body part is provided with a slot for inserting the horizontal positioning rod; the tail part is provided with a convex handle slot for the insertion of a handle; the surface and the cross section of the tail part are respectively provided with a groove for inserting and locking the angle osteotomy groove.
One end of the loose-leaf nail insertion piece is in a long fork shape, the other end of the loose-leaf nail insertion piece is in an expanded round shape, and a round guide hole with the diameter of 5mm is formed in the center of the loose-leaf nail insertion piece and used for placing the loose-leaf nail.
Horizontal positioning pole one end is flat form constriction, can insert the director somatic part groove in fixed, and the middle part is the horizon rule, is made by transparent or translucent material, is equipped with the liquid of taking the bubble in, can judge whether the horizon rule is located horizontal position according to the bubble position placed in the middle, and the horizontal positioning pole other end is the bevel protractor, and the bevel protractor mark has the angle scale, has the single plane arc.
The angle osteotomy groove is divided into horizontal arm and sloping arm, is connected through circular shape angle indicating disc to horizontal arm and sloping arm can carry out the single plane rotation around angle indicating disc, and angle indicating disc central authorities have the diameter 2mm hole for supplying putting into of axial pin. The lower part of the horizontal arm is provided with a protruded flat insertion piece which is provided with a longitudinal groove, and the middle parts of the horizontal arm and the inclined arm are provided with osteotomy grooves along the longitudinal axis.
The head of the press-fit nut is hexagonal, and the body is hollow and provided with internal threads for fixing the loose-leaf nail insert on the insert bolt of the guider body;
the head of the locking nut is hexagonal, and the body of the locking nut is provided with external threads for fixing the angle osteotomy groove in the tail groove of the guider.
The handle has a specific radian, and the section of one end of the handle is in a convex shape and is inserted into a handle slot at the tail part of the guider. The positioning needle sighting device is of a rod-shaped structure with two bent ends, and one end of the positioning needle sighting device is connected with a vertical metal ring with the diameter of 5.5mm and is used for being sleeved at the tail end of the loose-leaf nail; the other end is provided with a guide cylinder with the interval of 2cm, and the hollow diameter of the guide cylinder is 2 mm.
The structures are positioned according to bony anatomical marks and are respectively and correctly assembled for accurately assisting the imbedding of loose-leaf nails and shaft nails and the operation of high-position double-plane open osteotomy of the tibia.
According to the loose-leaf nails, the shaft nails and the biplane osteotomy guide device, the loose-leaf nails are hollow in body parts and are in long cylindrical shapes, and the head ends of the loose-leaf nails are provided with the sawteeth; the tail end is hollow, the diameter is smaller than that of the head end, and the tail end is hexagonal.
According to the loose-leaf nails, the shaft nails and the biplane osteotomy guide device, the diameter of the head of the push rod is the same as that of the hollow part of the loose-leaf nail body, the diameter of the push rod body is smaller than that of the head of the push rod, the tail end of the push rod body is provided with internal threads, and one end of the tail of the push rod is provided with the T-shaped handle.
According to the loose-leaf nails, the shaft nails and the biplanar osteotomy guide device, the guide device is divided into the left side and the right side and is of a long rod-shaped structure with a specific radian.
According to the loose-leaf nails, the shaft nails and the biplanar osteotomy guide device, the fibula positioning disc is in a concave disc shape.
According to the loose-leaf nail, the shaft nail and the biplane osteotomy guiding device, one end of the loose-leaf nail insert is in a long fork shape, the other end of the loose-leaf nail insert is in an expanded round shape, and a round hole with the diameter of 5mm is formed in the center of the loose-leaf nail insert.
According to the loose-leaf nails, the shaft nails and the biplane osteotomy guide device, one end of the horizontal positioning rod is flat and narrow, the middle part of the horizontal positioning rod is a horizontal ruler made of transparent or semitransparent materials, liquid with bubbles is filled in the horizontal positioning rod, and the other end of the horizontal positioning rod is an angle ruler.
According to the loose-leaf nails, the shaft nails and the biplane osteotomy guide device, the angle ruler is marked with angle scales and provided with a single-plane arc.
According to the loose-leaf nail, the shaft nail and the biplane osteotomy guide device, the angular osteotomy groove is divided into the horizontal arm and the inclined arm, the osteotomy groove is formed in the middle of the horizontal arm and the inclined arm along the longitudinal axis of the horizontal arm and the inclined arm, and the horizontal arm and the inclined arm are connected through the round angle indicating disc.
According to the loose-leaf nails and the shaft nails and the biplanar osteotomy guide device, the horizontal arm and the inclined arm of the angular osteotomy groove can rotate around the angle indicating disc in a single plane, and the center of the angle indicating disc is provided with a hole with the diameter of 2 mm.
According to the loose-leaf nail, the shaft nail and the biplane osteotomy guide device, the positioning needle sighting device is of a rod-shaped structure with two bent ends, and one end of the positioning needle sighting device is connected with a metal ring with the vertical position and the diameter of 5.5 mm; the other end is provided with a guide cylinder with the interval of 2cm, and the hollow diameter of the guide cylinder is 2 mm.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model discloses the loose-leaf nail can be assisted accurately with putting into of axial pin with the matched stack metal frame structure of biplane osteotomy guider. The device can be accurately positioned in the operation, reduces the radioscopy damage, and has simple structure and convenient operation. The accurate placement of the loose-leaf nail can greatly reduce the serious complication of the loose-leaf fracture at the far end of the osteotomy line in the high open osteotomy of the tibia, and the re-implantation of the bone column at the loose-leaf part is beneficial to the long-term osteogenesis. The accurate positioning and the implantation of the shaft nail can also reduce the risks of bone injury, fracture splitting and the like at the joint of the biplane osteotomy line. The specific radian of each part of the biplane osteotomy guide device is beneficial to the placement in the operation, and the interference caused by the anatomical protrusions such as tibial tubercles and the like can be avoided. The loose-leaf nail inserting sheet can be adjusted in multiple angles, can be fixed at a proper position and is convenient for adjusting an ideal position in the operation. Through the positioning of the fibula positioning disk and the positioning pin sighting device, 2 positioning pins can be conveniently implanted to the preset position of the loose-leaf nail. The horizontal arm and the oblique arm of the biplane osteotomy guiding device are adjustable in angle, so that the biplane osteotomy angle can be conveniently readjusted in the operation, the angle osteotomy groove and the tail part of the biplane osteotomy guiding device are connected in a slot fixing mode, and the position of the osteotomy groove can be adjusted up and down. The level bar of horizontal position pole can judge whether the level bar is located horizontal position according to the bubble position whether placed in the middle, and the angle scale that the angle chi was carried is favorable to carrying out the relocation to the orientation of pilot pin and osteotomy groove in the art, and the radian that the angle chi was carried can avoid bony prominence such as shin bone tuberosity to the biplane osteotomy guider place the influence that brings. The utility model discloses an easy operation indicates accurate directly perceived, and is less to operating space requirement, can help putting into of accurate supplementary loose-leaf nail and axle nail to and the accurate operation of biplane osteotomy line, and reduce the emergence of complications such as fracture in the art.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic structural view of an embodiment of the bi-planar osteotomy guide of the present invention;
FIG. 2 is a schematic view of the construction of a loose-leaf binder;
FIG. 3 is a schematic view of the construction of the alignment pin sight;
FIG. 4 is a schematic view of the structure of the angle osteotomy groove;
FIG. 5 is a schematic structural view of the guiding device of the present invention for precise positioning during surgery;
FIG. 6 is a schematic view of an osteotomy using an angled osteotomy slot;
FIG. 7 is an exploded view of the angle osteotomy groove;
figure 8 is a schematic view of the construction of a hinge pin insert.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the embodiments described herein are merely for the purpose of illustrating the invention and are not intended to limit the invention.
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, a detailed structure will be presented for a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The tibia high-position osteotomy is a better surgical type for treating knee joint medial unicompartmental diseases at present, the advantage of the open tibia high-position osteotomy can gradually adjust the correction angle in the operation, and the principle is that the proximal tibia bone is cut off and then the inner side is propped open to a certain degree, so that the lower limb force line is moved outwards to an ideal position slightly outside the middle part of the knee joint, and the purpose of relieving medial clearance pain is achieved. However, this technique requires a high level of alignment of the osteotomy line, which can result in under-correction or overkill if the osteotomy is not performed at the desired location. The depth of the osteotomy line is also one of the most important factors, the severe complication of fracture of the hinge part at the outer side of the proximal end of the tibia during distraction is easily caused by over-shallow osteotomy, and the problems of fracture, internal fixation failure and the like can also be caused by over-deep osteotomy. However, no means for precise positioning assistance during this procedure are available, and no means for intervention at the hinge site are available. The utility model discloses a loose-leaf nail and axle nail device have been designed to solve such problem to and biplane cuts bone guider, realize carrying out accurate positioning in the art and accomplish and cut the bone, and accurately put into the loose-leaf nail, prevent loose-leaf department fracture complication, improve the operation effect, convenient clinical application.
The following description will specifically explain the implementation of the present invention by way of specific embodiments with reference to the accompanying drawings:
as shown in fig. 1, the present embodiment provides a loose-leaf nail and shaft nail and a biplane osteotomy guide, which is made of metal or alloy with certain mechanical strength, and is composed of a loose-leaf nail 100, a positioning pin aiming device 200 and a biplane osteotomy guide 300.
As shown in fig. 2, the loose-leaf nail 100 is hollow in a body 101, is in a long cylindrical shape, and is provided with sawteeth 102 at the head end; the tail end 103 is hollow, the diameter is smaller than that of the head end, and the tail end 103 is in a hexagonal shape; the push rod 104 is positioned in the hollow part of the loose-leaf nail, the diameter of the head of the push rod 104 is the same as that of the hollow part of the body of the loose-leaf nail 100, the diameter of the body of the push rod 104 is smaller than that of the head of the push rod and is positioned in the hollow part of the tail part of the loose-leaf nail, the tail end part of the push rod body is provided with an internal thread 105, one end of the tail part of the push rod is provided with a T-shaped handle.
As shown in fig. 3, the positioning pin sighting device 200 is a rod-shaped structure with two bent ends, and one end is connected with a vertical metal ring 201 with a diameter of 5.5mm for being sleeved at the tail end of the loose-leaf nail; the other end is provided with a guide cylinder 202 with the interval of 2cm, and the hollow diameter of the guide cylinder 202 is 2 mm.
As shown in fig. 1, the biplane osteotomy guide 300 is comprised of a guide 301, a staple insert 302, a horizontal positioning rod 303, an angular osteotomy slot 304, a press-fit nut 305, a locking nut 306, and a handle 307.
The guide 301 is divided into a left side and a right side, is a long rod-shaped structure with a specific radian, and is divided into a head part 301a, a body part 301b and a tail part 301 c. The head 301a is a fibula positioning disc 308 which is in a concave disc shape; body 301b has a raised tab latch 309; the body part is provided with 3 fixing holes 310 with the diameter of 2 mm; the body part is provided with a slot 311; the tail part 301c is provided with a convex handle slot 312; the trailing surface and cross-section are each slotted 313.
As shown in fig. 8, one end of the staple inserting sheet 302 is long fork-like, the other end is enlarged round, and a round guiding hole 314 with a diameter of 5mm is formed in the center.
Horizontal alignment rod 303 one end is flat constricting, and the middle part is the horizon rule, is made by transparent or translucent material, is equipped with the liquid of taking the bubble in, and the horizontal alignment rod other end is the bevel protractor, and the bevel protractor mark has the angle scale, has the single plane arc.
As shown in fig. 4 and 7, the angle osteotomy groove 304 is divided into a horizontal arm 315 and a slant arm 316, which are connected by a circular angle indicator disc 317, the horizontal arm 315 and the slant arm 316 can rotate around the angle indicator disc 317 in a single plane, and the center of the angle indicator disc 317 is provided with a hole with the diameter of 2 mm. Below the horizontal arm 315 there is a protruding flat insert 318, which is slotted longitudinally, and in the middle of the horizontal and diagonal arms there is a osteotomy slot 319 along its longitudinal axis.
The press-fit nut 305 has a hexagonal head and a hollow body with internal threads for securing the staple tab 302 to the tab bolt 309 of the body of the guide 301.
The locking nut 306 has a hexagonal head and an external thread on its body for securing the angled osteotomy groove 304 within the guide tail groove 313.
The handle 307 has a specific curvature and a "convex" shape in cross-section at one end and is inserted into the handle slot 312 at the tail of the guide.
The structures are positioned according to bony anatomical marks and are respectively and correctly assembled for accurately assisting the imbedding of loose-leaf nails and shaft nails and the operation of high-position double-plane open osteotomy of the tibia.
The loose-leaf nail, the shaft nail and the biplane osteotomy guiding device are connected and positioned at the back of the proximal end of the tibia, so that the implantation of the loose-leaf nail and the shaft nail and the accurate operation of the biplane osteotomy line can be accurately assisted, and the occurrence of complications such as fracture in the operation is reduced.
Referring to fig. 5 and 6, in application, after the proximal inner side of the tibia a is exposed, the bony mark at the position of the tip of the fibula B on the proximal outer side of the tibia a is touched, the head end of the handle 307 is inserted into the handle slot 312 at the tail part of the biplane osteotomy guide 301, the guide 301 is held by hand, the recess of the fibula positioning disc 308 covers the tip of the fibula, the biplane osteotomy guide 301 is placed at the proximal end of the tibia a, the guide body 301B bypasses the tibial tubercle bulge at the front part of the proximal end of the tibia a, and the guide tail 301c is positioned at the proximal inner side of the tibia. The outside of the tibial plateau of the lateral joint space of the knee is touched, a long fork-shaped opening at one end of the loose-leaf nail insert 302 is inserted into the insert bolt 309 of the guide, the loose-leaf nail insert 302 is adjusted to enable the center of the central hole 314 at the other end of the loose-leaf nail insert 302 to be located 1.5cm inside the upper tibiofibular joint and 1.5cm below the tibial plateau of the lateral joint space, and the press-fit nut 305 is screwed in to lock the loose-leaf nail insert 302 and the insert bolt 309. At this time, 2 k-wires of 2mm diameter are passed through the fixation holes 310 of the guide body 301b, and the guide 301 is fixed to the proximal end of the tibia a, with the handle 307 removed. The flat narrowed part of the horizontal positioning rod 303 is inserted into the slot 311 of the body part of the guider, whether the air bubbles in the horizontal ruler are positioned at the center is observed, and the knee bending angle and the shank angle are adjusted to ensure that the air bubbles in the horizontal ruler are positioned at the center. A1 mm Kirschner wire is driven into the center of a guide hole 314 of a loose-leaf nail insert 302 for positioning, the position is proved to be good by X-ray perspective, the tail end of the loose-leaf nail 100 is installed on a power device, the loose-leaf nail 100 is screwed into the proximal tibia through the 1mm Kirschner wire, the power device at the tail end of the loose-leaf nail is removed, and the loose-leaf nail 100 is left in the proximal tibia sclerotin. The metal ring 201 at one end of the positioning pin sighting device 200 is sleeved on the loose-leaf nail, so that the guide cylinder 202 is positioned at the inner side of the proximal end of the tibia, 2 kirschner pins with the diameter of 2mm are respectively driven into the guide cylinder 202, the 2 kirschner pins are positioned on the surface of the pseudo osteotomy at the moment, and the included angle between the 2 kirschner pins and the horizontal line is read through the angle ruler arranged on the horizontal positioning ruler. X-ray fluoroscopy proves that the 2 Kirschner wires are well positioned with the proposed osteotomy face. The loose-leaf nail and the columnar bone core in the loose-leaf nail are taken out together. The angle osteotomy slot 304 is fixed in the guide tail slot by the locking nut 306 at the time when the flat insertion piece 318 below the horizontal arm 315 of the angle osteotomy slot 304 is inserted into the slot 313 of the guide tail 301c and the position of the angle osteotomy slot 304 is adjusted in the up-down and left-right directions to be flush with 2 positioning kirschner wires. The inclined arm 316 is rotated, and the angle between the inclined arm 316 and the horizontal arm 315 is 120 degrees or the angle desired by the operator is indicated by the scale of the angle indicating disc 317, and a 2mm diameter kirschner wire is screwed in as a shaft nail through the opening in the center of the angle indicating disc. The position is proved to be good, the swing saw is utilized to pass through the horizontal arm 315 of the angle bone cutting groove 304 to horizontally cut the bone obliquely upwards, the swing saw can break through the bone gap left by the loose-leaf nail bone core, the bone cutting can be stopped at the moment, and the fracture risk at the loose-leaf part is avoided. A posterior oblique tibial tuberosity resection is then performed through the oblique arms of the angled resection slot 304. After the biplanar osteotomy is completed, the columnar bone core taken down by the loose-leaf nail 100 is implanted back into the original bone hole, and the guider 301 is removed. At the moment, the osteotomy part can be propped up to the planned height before the operation, and then the steel plate can be placed and fixed.
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 it; 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 technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a loose-leaf nail, shaft nail and biplane cut bone guider which characterized in that: the guide device is made of metal or alloy and comprises loose-leaf nails, a positioning pin sighting device and a biplane osteotomy guide device, wherein the loose-leaf nails are used for taking out loose-leaf part bone columns; the positioning pin sighting device is used for assisting in positioning an implantation positioning pin to a preset position of the loose-leaf pin; the biplane osteotomy guide device is used for assisting in positioning the loose-leaf pins and the shaft pins, positioning the structures according to bony dissection marks and correctly assembling the structures respectively, and is used for accurately assisting in the insertion of the loose-leaf pins and the shaft pins and the operation of high-position biplane open osteotomy of the tibia.
2. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 1, wherein: the loose-leaf nail is hollow in body part and is in a long cylindrical shape, and the head end of the loose-leaf nail is provided with sawteeth; the tail end is hollow, the diameter of the tail end is smaller than that of the head end, and the tail end part is in a hexagonal prism shape; the loose-leaf nail is provided with a push rod, the push rod is located in a hollow portion of the loose-leaf nail, the diameter of the head of the push rod is the same as that of the hollow portion of the body of the loose-leaf nail, the diameter of the body of the push rod is smaller than that of the head of the push rod and located in the hollow portion of the tail of the loose-leaf nail, internal threads are formed in the tail portion of the push rod body, one end of the tail of the push rod is provided with a T-shaped handle, and one.
3. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 1, wherein: the biplane osteotomy guiding device comprises a guider, a loose-leaf nail inserting piece, a horizontal positioning rod, an angle osteotomy groove, a press fit nut, a locking nut and a handle.
4. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 3, wherein: the guide is divided into a left side and a right side, is of a long rod-shaped structure with a specific radian and is divided into a head part, a body part and a tail part, and the head part is a fibula positioning disc and is in a concave disc shape; the body has a projecting plug; the body part is provided with 3 fixing holes; the body part is provided with a slot; the tail part is provided with a convex handle slot; the surface and the cross section of the tail part are respectively provided with a groove.
5. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 3, wherein: one end of the loose-leaf nail insertion piece is in a long fork shape, the other end of the loose-leaf nail insertion piece is in an expanded round shape, and a guide hole is formed in the center of the loose-leaf nail insertion piece.
6. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 3, wherein: one end of the horizontal positioning rod is flat and narrow, the middle part of the horizontal positioning rod is a horizontal ruler which is made of transparent or semitransparent materials, liquid with bubbles is filled in the horizontal positioning rod, the other end of the horizontal positioning rod is an angle ruler, and the angle ruler is marked with angle scales and is provided with a single-plane arc.
7. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 3, wherein: the angle osteotomy groove is divided into a horizontal arm and an inclined arm, the osteotomy groove is formed in the middle of the horizontal arm and the inclined arm along the longitudinal axis of the horizontal arm and the inclined arm and is connected through a circular angle indicating disc, the horizontal arm and the inclined arm can rotate around the angle indicating disc in a single plane, a hole is formed in the center of the angle indicating disc, a protruding flat inserting piece is arranged below the horizontal arm, and a longitudinal groove is formed in the inserting piece.
8. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 3, wherein: the head of the press-fit nut is hexagonal, and the body is hollow and provided with internal threads for fixing the loose-leaf nail insert on the insert bolt of the guider body; the head of the locking nut is hexagonal, and the body of the locking nut is provided with external threads for fixing the angle osteotomy groove in the tail groove of the guider.
9. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 3, wherein: the handle is provided with a specific radian, and the section of one end of the handle is in a convex shape and is inserted into a handle slot at the tail part of the guider.
10. The loose-leaf nail, shaft nail and biplane osteotomy guide of claim 1, wherein: the positioning needle sighting device is of a rod-shaped structure with two bent ends, and one end of the positioning needle sighting device is connected with a vertical metal ring and is used for being sleeved at the tail end of the loose-leaf nail; the other end is provided with guide cylinders arranged at intervals, and the hollow diameter of each guide cylinder is 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920290101.5U CN209808460U (en) | 2019-03-07 | 2019-03-07 | Loose-leaf nail, shaft nail and biplane osteotomy guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920290101.5U CN209808460U (en) | 2019-03-07 | 2019-03-07 | Loose-leaf nail, shaft nail and biplane osteotomy guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209808460U true CN209808460U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920290101.5U Active CN209808460U (en) | 2019-03-07 | 2019-03-07 | Loose-leaf nail, shaft nail and biplane osteotomy guiding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209808460U (en) |
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2019
- 2019-03-07 CN CN201920290101.5U patent/CN209808460U/en active Active
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Effective date of registration: 20220301 Address after: No.23, Lane 3399, Kangxin highway, Pudong New Area, Shanghai, 201314 Patentee after: SHANGHAI LONGHUI MEDICAL TECHNOLOGY Co.,Ltd. Address before: No.59, Haier Road, Laoshan District, Qingdao, Shandong Province Patentee before: THE AFFILIATED HOSPITAL OF QINGDAO University |