CN213910567U - Acetabular socket positioning tool for hip surgery - Google Patents
Acetabular socket positioning tool for hip surgery Download PDFInfo
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- CN213910567U CN213910567U CN202021238764.1U CN202021238764U CN213910567U CN 213910567 U CN213910567 U CN 213910567U CN 202021238764 U CN202021238764 U CN 202021238764U CN 213910567 U CN213910567 U CN 213910567U
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Abstract
The utility model provides an acetabulum fossa positioning tool for hip joint surgery, which comprises a fixing nail, a positioning rod and a fixing frame; the fixing nail comprises a nail rod, a nail cap and a nail cap shell, wherein the nail cap is provided with a first spherical hole or a first prismatic hole; two ends of the positioning rod are respectively provided with a first ball head and a second ball head; the fixing frame comprises a clamp and a connecting seat, and a second spherical hole or a second prismatic hole is formed in the connecting seat; the first ball head is matched with the first spherical hole or approximately tangent to the side surface of the first prismatic hole, and can rotate in the first spherical hole or the first prismatic hole; the second ball head is matched with the second spherical hole or is approximately tangent to the side surface of the second prismatic hole, and can rotate in the second spherical hole or the second prismatic hole. The utility model discloses an acetabulum nest positioning tool for hip joint operation simple structure, installation, dismantlement and convenient to use, rotatory nimble, the location is accurate, can provide accurate reference for hip joint prosthesis's correct installation.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, in particular to an acetabulum nest positioning tool for hip joint operation.
Background
The total hip replacement is a novel operation mode appearing in recent years, and the installation and replacement of a hip prosthesis are completed in a relatively small incision (5-10 cm) by improving an operation access, an operation method and an operation tool on the basis of the traditional total hip replacement. The goal of total hip replacement is to reconstruct a stable, weight bearing, and functionally functional, long-term effective hip joint. With improvements in joint prostheses and advances in surgical techniques, survival of the prosthesis in vivo for 10-20 years is now not an issue. However, the current joint replacement patients show a trend towards younger patients, which puts higher demands on the service life of the joints. Different mounting positions and mounting angles of the same hip joint prosthesis bring different stress conduction modes, and the maximum service life can be obtained only by accurately reconstructing the hip joint. Furthermore, the installation position and angle of the hip prosthesis also have a critical influence on the clinical function of the prosthesis, and poor installation of the acetabular prosthesis can lead to dislocation of the prosthesis, impingement of edges, increased wear and a change in the range of motion of the joint.
For a better fit of the hip prosthesis, it is necessary to accurately measure the safe acetabular fit angles, i.e. abduction angle and anteversion angle, that are suitable for the patient. In the prior art, the installation angle of the acetabulum is mostly determined by the personal experience of doctors, and an accurate positioning basis is not provided, so that the installation angle of the acetabulum is not suitable for patients, pain of the patients is caused, and the service life of the installed acetabulum is also reduced. In this regard, the applicant proposed a completely new positioning and measuring device and method for hip replacement surgery in chinese patent application 202010494626.8, which uses two positioning modules (sensors), namely a reference positioning module and a measurement positioning module, to perform real-time accurate measurement of abduction angle and anteversion angle of a patient. The reference locator module is fixed on the outer side of the acetabulum fossa of a patient at a proper position and angle during operation, so that reference is provided for the measurement locator module, and an acetabulum fossa positioning tool is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, the present invention provides an acetabular socket positioning tool for hip surgery, which has a simple structure, is convenient to install, disassemble and use, is flexible to rotate, is accurate in positioning, and can provide accurate reference for correct installation of hip prosthesis.
In order to achieve the purpose, the utility model provides an acetabulum fossa positioning tool for hip joint surgery, which comprises a fixing nail, a positioning rod and a fixing frame; wherein the content of the first and second substances,
the fixing nail comprises a nail rod, a nail cap and a nail cap shell, and the nail cap is provided with a first spherical hole or a first prismatic hole;
two ends of the positioning rod are respectively provided with a first ball head and a second ball head;
the fixing frame comprises a clamp and a connecting seat, and a second spherical hole or a second prismatic hole is formed in the connecting seat; and the number of the first and second electrodes,
the first ball head is matched with the first spherical hole or is approximately tangent to the side surface of the first prismatic hole and can rotate in the first spherical hole or the first prismatic hole;
the second ball head is matched with the second spherical hole or is approximately tangent to the side surface of the second prismatic hole, and can rotate in the second spherical hole or the second prismatic hole.
Further, the shank is threaded so that the staple is more stable when driven into the patient's bone.
Furthermore, the nail cap is provided with a hexagonal prism, and the cross section of the hexagonal prism is a regular hexagon; the center of the hexagonal prism is provided with a first prism hole, the first prism hole is a hexagonal prism hole, and the cross section of the first prism hole is also a regular hexagon; the first ball head is substantially tangent to six sides of the hexagonal-prism-shaped hole and is rotatable within the hexagonal-prism-shaped hole.
Further, the six sides of the hexagonal prism of the nail cap are respectively provided with a threaded hole for a threaded fastener to pass through so as to lock the position of the first ball head in the hexagonal prism hole.
Further, the nail cap shell is provided with a hexagonal prism cover which is matched with the hexagonal prism on the nail cap and can cover the nail cap; the nut shell is provided with through holes on two opposite side surfaces of the hexagonal prism cover of the nut shell respectively, the through holes correspond to the threaded holes on the side surfaces of the hexagonal prism of the nut shell, and threaded fasteners are used for penetrating through the through holes to lock the position of the first ball head in the hexagonal prism hole.
Further, the nut housing has a first through hole on the top surface of the hexagonal prism cover and/or one side surface other than the two opposite side surfaces thereof for allowing the positioning rod to pass therethrough and to rotate within a range defined by the first through hole.
Further, the holder has two threaded holes for threaded fasteners to pass through to secure the aligner module (integrated set of sensors) to the holder.
Further, the connecting seat is approximately quadrangular, and the cross section of the connecting seat is approximately square; one side of the quadrangular prism of the connecting seat is provided with a threaded hole for a threaded fastener, such as a threaded knob, to pass through to lock the position of the second spherical hole or the second ball head in the second prism hole.
Further, the second prismatic hole is a square hole, and the second ball head is approximately tangent to four side faces of the square hole and can rotate in the square hole.
Further, the connecting seat is provided with a cover plate, and the center of the cover plate is provided with a second through hole for enabling the positioning rod to pass through and rotate within the range limited by the second through hole.
When the acetabulum socket positioning tool for hip joint operation is used in hip joint operation, such as total hip joint replacement operation, the positioning nail is firstly nailed into the rear end of the anterior superior iliac spine of a patient, and then the positioning rod and the fixing frame fixed with the positioning instrument module are connected to the fixing nail; the positioning rod can rotate in the range limited by the first through hole at one end of the fixing nail, and can rotate in the range limited by the second through hole at one end of the fixing frame, and the positioning rod and the fixing frame are combined together to rotate the positioning instrument module to any angle required by the operation; after the locator module rotates to the initial calibration angle, the rotation of the two ball heads is locked by screwing the screw cap and the fastener on the connecting seat, so that the position of the locator module is accurately locked.
The utility model discloses an acetabulum nest positioning tool for hip joint operation simple structure, installation, dismantlement and convenient to use, rotatory nimble, the location is accurate, can provide accurate reference for hip joint prosthesis's correct installation.
Drawings
FIG. 1 is a schematic view of an acetabular socket positioning tool for use in hip surgery in accordance with a preferred embodiment of the invention;
FIG. 2 is a schematic view of a staple of an acetabular socket positioning tool for use in hip surgery in accordance with a preferred embodiment of the invention;
fig. 3 is a schematic structural view of a fixing frame of an acetabulum socket positioning tool for hip surgery according to a preferred embodiment of the invention.
Detailed Description
The following embodiments of the present invention will be described in detail, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
As shown in figures 1-3, in a preferred embodiment, the acetabular socket positioning tool for hip surgery of the present invention comprises a fixing nail 1, a positioning rod 2 and a fixing frame 3; the fixing nail 1 comprises a nail rod 11, a nail cap 12 and a nail cap shell 13, wherein the nail cap 12 is provided with a hexagonal prism hole 15; the two ends of the positioning rod 2 are respectively provided with a first ball head 21 and a second ball head 22; the fixing frame 3 comprises a clamp 31 and a connecting seat 32, and the connecting seat 32 is provided with a spherical hole 35; the first ball head 21 is approximately tangent to six side surfaces of the hexagonal prism hole 15 and can rotate in the hexagonal prism hole 15; the second ball 22 generally engages the spherical aperture 35 and is rotatable within the spherical aperture 35.
The shank 11 is threaded so that the staple 1 is more stable when driven into the bone of a patient.
The nail cap 12 is provided with a hexagonal prism, and the cross section of the hexagonal prism is a regular hexagon; a first prism hole is formed in the center of the hexagonal prism, the first prism hole is a hexagonal prism hole 15, and the cross section of the first prism hole is also a regular hexagon; the first ball head 21 is substantially tangent to six sides of the hexagonal hole 15 and is thus rotatable within the hexagonal hole 15.
The six sides of the hexagonal prism of the nut 12 each have a threaded hole 14 for passing a threaded fastener (not shown) therethrough to lock the position of the first bulb 21 in the hexagonal hole 15.
The nail cap shell 13 is provided with a hexagonal prism cover which is matched with the hexagonal prism on the nail cap 12 and can cover the nail cap 12; the nut housing 13 has through holes 16 on two opposite sides of its hexagonal housing, corresponding to the threaded holes 14 in the sides of the hexagonal prism of the nut 12, for threaded fasteners (not shown) to pass through to lock the position of the first bulb 21 in the hexagonal hole 15.
The nut housing 13 has a first through hole 17 on the top surface of its hexagonal prism cover and/or one side surface other than the two opposite side surfaces, for allowing the positioning rod 2 to pass through and be rotatable within a range defined by the first through hole 17.
The holder 31 has two threaded holes 33 for receiving threaded fasteners (not shown) to secure the aligner module (not shown) to the holder 31.
The connecting socket 32 is substantially quadrangular prism-shaped, and the cross section thereof is substantially square; the coupling seat 32 has a screw hole on one side of the quadrangular prism shape for passing a screw knob 34 to lock the position of the second ball 22 in the spherical hole 35.
The connecting seat 32 has a cover plate 36, and the cover plate 36 has a second through hole 37 at the center for allowing the positioning rod 2 to pass through and rotate within a range defined by the second through hole 37.
When the acetabular socket positioning tool for the hip joint operation is used in the hip joint operation, the positioning nail 1 is firstly nailed into the rear end of the anterior superior iliac spine of a patient, and then the positioning rod 2 and the fixing frame 3 fixed with the positioning instrument module are connected to the fixing nail 1; the positioning rod 2 can rotate in the range limited by the first through hole 17 at one end of the fixing nail 1, and can rotate in the range limited by the second through hole 37 at one end of the fixing frame 3, and the positioning instrument module can be rotated to any angle required by the operation by combining the two rotations; after the position finder module rotates to the initial calibration angle, the two ball heads 21 and 22 are locked by screwing the fasteners on the screw cap 12 and the connecting seat 32, so that the position of the position finder module is accurately locked.
In another preferred embodiment, the center of the nut 12 is not a hexagonal-prism-shaped hole 15, but a spherical-shaped hole in which the first ball 21 can rotate.
In a further preferred embodiment, the center of the connecting base 32 is not a spherical hole 35, but a square hole, and the second ball head 22 is substantially tangent to four sides of the square hole and can rotate in the square hole.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An acetabulum fossa positioning tool for hip joint surgery is characterized by comprising a fixing nail, a positioning rod and a fixing frame; wherein the content of the first and second substances,
the fixing nail comprises a nail rod, a nail cap and a nail cap shell, and the nail cap is provided with a first spherical hole or a first prismatic hole;
a first ball head and a second ball head are respectively arranged at two ends of the positioning rod;
the fixing frame comprises a clamp and a connecting seat, and a second spherical hole or a second prismatic hole is formed in the connecting seat; and the number of the first and second electrodes,
the first ball head is matched with the first spherical hole or is approximately tangent to the side surface of the first prismatic hole, and can rotate in the first spherical hole or the first prismatic hole;
the second ball head is matched with the second spherical hole or approximately tangent to the side surface of the second prismatic hole and can rotate in the second spherical hole or the second prismatic hole.
2. The acetabular socket positioning tool for hip surgery of claim 1, wherein the stem is threaded.
3. The acetabular socket locator tool for hip surgery of claim 1, wherein the cap has a hexagonal prism with a regular hexagonal cross-section; the center of the hexagonal prism is provided with a first prism hole, the first prism hole is a hexagonal prism hole, and the cross section of the first prism hole is also a regular hexagon; the first ball head is approximately tangent to six side faces of the hexagonal prism hole and can rotate in the hexagonal prism hole.
4. The acetabular socket locator tool for hip surgery of claim 3, wherein each of six sides of the hexagonal prism of the nut has a threaded hole therethrough for passage of a threaded fastener to lock the position of the first ball head in the hexagonal prism hole.
5. The acetabular socket locator tool for hip surgery of claim 4, wherein the nut housing has a hexagonal prism cover that mates with and covers the hexagonal prism on the nut; the nut shell is provided with through holes on two opposite side surfaces of the hexagonal prism cover respectively, the through holes correspond to the threaded holes on the side surfaces of the hexagonal prism of the nut, and threaded fasteners are used for penetrating through the through holes to lock the position of the first ball head in the hexagonal prism hole.
6. The acetabular socket locator tool for use in hip surgery of claim 5, wherein the nut housing has a first through hole in a top surface of the hexagonal cap and/or one side surface other than the two opposing side surfaces for the locator rod to pass through and rotate within a range defined by the first through hole.
7. The acetabular socket positioning tool for hip surgery of claim 1, wherein the holder has two threaded holes for passage of threaded fasteners to secure the locator module to the holder.
8. The acetabular socket positioning tool for hip surgery of claim 1, wherein the attachment socket is generally quadrangular-shaped and generally square in cross-section; one side surface of the quadrangular prism shape of the connecting seat is provided with a threaded hole for enabling a threaded fastener to pass through so as to lock the position of the second spherical hole or the second ball head in the second prism hole.
9. The acetabular socket locator tool for use in hip surgery of claim 8, wherein the attachment base has a cover plate with a second through hole in the center thereof for the locator rod to pass through and rotate within the confines of the second through hole.
10. The acetabular socket locator tool for use in hip surgery of claim 8, wherein the second prismatic hole is a square hole and the second ball is substantially tangent to four sides of the square hole and is rotatable therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021238764.1U CN213910567U (en) | 2020-06-30 | 2020-06-30 | Acetabular socket positioning tool for hip surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021238764.1U CN213910567U (en) | 2020-06-30 | 2020-06-30 | Acetabular socket positioning tool for hip surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213910567U true CN213910567U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021238764.1U Active CN213910567U (en) | 2020-06-30 | 2020-06-30 | Acetabular socket positioning tool for hip surgery |
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| Country | Link |
|---|---|
| CN (1) | CN213910567U (en) |
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2020
- 2020-06-30 CN CN202021238764.1U patent/CN213910567U/en active Active
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