CN110811939B - Acetabular prosthesis positioning device for unilateral hip arthroplasty and positioning method thereof - Google Patents
Acetabular prosthesis positioning device for unilateral hip arthroplasty and positioning method thereof Download PDFInfo
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- CN110811939B CN110811939B CN201911281458.8A CN201911281458A CN110811939B CN 110811939 B CN110811939 B CN 110811939B CN 201911281458 A CN201911281458 A CN 201911281458A CN 110811939 B CN110811939 B CN 110811939B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4609—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of acetabular cups
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4632—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using computer-controlled surgery, e.g. robotic surgery
- A61F2002/4633—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using computer-controlled surgery, e.g. robotic surgery for selection of endoprosthetic joints or for pre-operative planning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
- A61F2002/4668—Measuring instruments used for implanting artificial joints for measuring angles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4687—Mechanical guides for implantation instruments
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Physical Education & Sports Medicine (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Prostheses (AREA)
Abstract
The invention discloses an acetabulum prosthesis positioning device for unilateral hip joint revision and a positioning method thereof.A positioning claw is detachably arranged on a holding rod, the lower end of the holding rod is connected with a connector through a cross universal shaft, the connector is detachably connected with an acetabulum cup through an installation head, a cross shaft of the cross universal shaft is positioned on an adjusting plane of a forward rake angle of the acetabulum cup, the connector is rotatably connected with the lower end of an adjusting rod on an extension line of the cross shaft, the upper end of the adjusting rod is provided with a first screw rod, the first screw rod penetrates through an angle adjusting disc and is in threaded connection with a forward rake angle fine adjusting knob, and the forward rake angle fine adjusting knob is in clearance fit with the angle adjusting; the adjusting rod is assembled with a second screw rod through a connecting piece, the second screw rod extends out of the angle adjusting disc and is in threaded connection with the abduction angle fine adjustment knob, and the abduction angle fine adjustment knob is in clearance fit with the angle adjusting disc through an I-shaped structure. The invention accurately and stably positions the acetabulum prosthesis, accurately finely adjusts the abduction angle and the anteversion angle, and has high efficiency and low cost.
Description
Technical Field
The invention belongs to the technical field of biomedical engineering, and relates to an acetabular prosthesis positioning device for unilateral hip arthroplasty and a positioning method thereof.
Background
Biomedical engineering is a general term for the research of artificial materials, products, devices and system technologies for disease prevention and treatment, human body function assistance and health care by comprehensively applying the principles and methods of life science and engineering science, recognizing the structure, function and other life phenomena of a human body at multiple levels in molecules, cells, tissues, organs and even the whole human body system from the engineering angle; both artificial (biological) organs and medical treatment equipment belong to biomedical engineering. Total hip replacement can relieve the pain of the hip joint of a patient and improve the function of the hip joint, is a currently accepted reliable method for treating various late-stage hip joint diseases, has great significance to public benefits, but has the need of acetabular revision surgery due to the occurrence of complications such as postoperative infection, prosthesis loosening, hip joint dislocation and the like.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the bone defect is serious in the revision surgery, the reference characteristic of the prosthesis placement center at the acetabulum lip is lost, the prosthesis placement center is difficult to position, the acetabulum prosthesis position deviation and too large or too small anteversion angle and abduction angle during installation are caused, the prosthesis combination stability is poor due to the mechanical instability, and the prosthesis revision surgery failure can be caused. The textbook and the literature clearly indicate that the recommended installation angle of the acetabular prosthesis is about 45 degrees in abduction angle and about 15 degrees in anteversion angle (the included angle between the projection of the line of the upper and lower edges of the acetabulum on the coronal plane and the horizontal plane is the abduction angle, and the included angle between the projection of the line of the front and rear edges of the acetabulum on the horizontal plane and the sagittal plane is the anteversion angle), however, in the process of hip revision surgery, the acetabulum structure of an acetabulum positioned by an operator depending on the acetabulum space position is damaged, the operator can only depend on own experience and subjective judgment to position and place an acetabulum prosthesis, great operation difficulty is faced, longer operation time is needed, and the requirement of accurately positioning the acetabulum prosthesis cannot be met, so that the postoperative effect of the total hip revision surgery is greatly reduced, even the surgery fails, greater risks are brought to patients, and greater challenges are provided for experience and technology of doctors.
Disclosure of Invention
In order to solve the problems, the invention provides the acetabulum prosthesis positioning device for the unilateral hip joint revision surgery, which has the advantages of simple structure, small volume, capability of accurately and stably positioning the acetabulum prosthesis, capability of accurately and finely adjusting the abduction angle and the anteversion angle of the acetabulum cup by a doctor in the surgery according to the actual condition, simple and convenient operation, reduced surgery difficulty, shortened surgery time, reduced dependence on the experience technology of the doctor, greatly reduced risk of the unilateral hip joint revision surgery, low cost and capability of solving the problems in the prior art.
Another object of the present invention is to provide a method of positioning an acetabular prosthesis positioning device for unilateral hip arthroplasty.
The invention adopts the technical scheme that the acetabulum prosthesis positioning device for unilateral hip joint revision comprises a holding rod, wherein a positioning claw is detachably arranged on the holding rod, the lower end of the holding rod is connected with a connector through a cross universal shaft, the connector is detachably connected with an acetabulum cup through an installation head, the holding rod, the cross universal shaft, the connector and the installation head are coaxial, and the center of the cross universal shaft is superposed with the center of the acetabulum cup; the cross shaft of the cross universal shaft is positioned on an adjusting plane of a forward rake of the acetabular cup, the connector is rotatably connected with the lower end of the adjusting rod on an extension line of the cross shaft, the upper end of the adjusting rod is provided with a first screw rod, the first screw rod penetrates through an angle adjusting disc and is in threaded connection with a forward rake fine adjusting knob, the angle adjusting disc is fixedly connected with the holding rod, and the forward rake fine adjusting knob is in clearance fit with the angle adjusting disc through an I-shaped structure; the adjusting rod is matched with the second screw rod through the connecting piece, the central line of the second screw rod is perpendicular to the central line of the adjusting rod and the central line of the transverse shaft, the second screw rod extends out of the angle adjusting disc and is in threaded connection with the abduction angle fine adjusting knob, the abduction angle fine adjusting knob is in clearance fit with the angle adjusting disc through an I-shaped structure, a sliding groove used for providing space displacement for the second screw rod when the front rake angle is adjusted is arranged on the connecting piece, and sliding grooves used for providing space displacement for the first screw rod when the abduction angle is adjusted are arranged at the top and the bottom of the angle adjusting disc.
Furthermore, the positioning claw is obtained by performing personalized reconstruction according to pelvic bone characteristics of different patients, the positioning claw is positioned in vitro, and the claws of the positioning claw are tightly attached to a positioning area with good pelvic bone characteristics of the patients.
Furthermore, the connecting piece is of a hollow structure, the second screw rod is installed inside the connecting piece through a cylindrical member, the axis of the cylindrical member is perpendicular to the central line of the second screw rod and the central line of the adjusting rod, a first sliding groove parallel to the adjusting rod is formed in the position, corresponding to the cylindrical member, on the connecting piece, and a second sliding groove parallel to the adjusting rod is formed in the position, corresponding to the second screw rod, on the connecting piece.
Furthermore, the sliding groove at the top of the angle adjusting disc is an arc sliding groove, the arc of the arc sliding groove is an arc which takes the center of the acetabular cup as the center of a circle and takes the length of the top of the angle adjusting disc from the center of the circle as the radius, a front rake angle scale mark is arranged on the first screw rod and at the position which is parallel and level to the top of the front rake angle fine adjustment knob, and the front rake angle corresponds to the length of the front rake angle scale mark.
Furthermore, a screw pointer is arranged on the cylindrical component, a through hole is formed in the position, corresponding to the screw pointer, of the angle adjusting disc, abduction angle scale marks are arranged on the edge of the through hole, the abduction angle scale marks are arranged on arc strings corresponding to the arc sliding grooves, and the abduction angle corresponds to the length of the abduction angle scale marks.
Furthermore, the connector is coaxially nested with the mounting head and is connected with the mounting head through a magnetic attraction structure, and the mounting head is in threaded connection with the acetabular cup.
Furthermore, the cross shaft and the longitudinal shaft of the cross universal shaft are perpendicular to each other, the cross shaft is rotatably connected with the connector through the first connecting arm, the longitudinal shaft is rotatably connected with the holding rod through the second connecting arm, radially extending connecting lugs are arranged on the outer wall of the connector and the extension line of the cross shaft, the connecting lugs are rotatably connected with the lower end of the adjusting rod through the rotating shaft, and the center line of the rotating shaft is perpendicular to the center line of the adjusting rod and the center line of the cross shaft.
Furthermore, the angle adjusting plate consists of a front cover and a rear cover, and the front cover and the rear cover are connected together through a third fixing screw.
Furthermore, the positioning claw is arranged at a corresponding position on the holding rod through a U-shaped joint, a limiting check ring for limiting the U-shaped joint to move up and down is arranged on the holding rod, and the U-shaped joint is detachably connected with the holding rod through a set screw; the holding rod is provided with a fixed seat which is fixedly connected with the angle adjusting disc, and the handle of the holding rod is knurled; the outer ends of the first screw rod and the second screw rod are sleeved with rubber sleeves.
The positioning method of the acetabular prosthesis positioning device for the unilateral hip arthroplasty adopts the acetabular prosthesis positioning device for the unilateral hip arthroplasty and comprises the following steps:
s1, reconstructing a pelvis region of a patient through medical image software, placing a reconstructed pelvis three-dimensional model of the patient according to the anatomical alignment of a human body, and symmetrically arranging an acetabulum bony structure of a healthy side to an affected side along a sagittal plane to obtain a computer-simulated acetabulum center of the affected side, namely an acetabulum prosthesis installation center, determining a center line of a holding rod according to the computer-simulated acetabulum center and the normal direction of a plane with an anteversion angle of 15 degrees and an abduction angle of 45 degrees, wherein a transverse axis of a cross universal shaft is positioned on an adjusting plane of the anteversion angle of the acetabulum cup;
s2, selecting a positioning area with good bony characteristics on the hip bone of the patient pelvis three-dimensional model for reverse design, designing the height and the angle of the positioning claw foot claw according to the installation position of the positioning claw on the holding rod, designing a threaded hole on the U-shaped joint of the positioning claw, and adopting 3D printing molding;
s3, positioning the acetabular cup: the positioning claw is arranged at the determined installation position on the holding rod, the connector at the lower end of the holding rod is coaxially nested and detachably connected with the installation head, the installation head is in threaded connection with the acetabular cup, a doctor holds the holding rod to tightly attach the claws of the positioning claw to the corresponding positioning areas respectively, so that the center of the acetabular cup is coincided with the center of the acetabulum simulated by the computer;
s4, adjustment of anteversion and abduction angles: adjusting the front rake angle fine adjustment knob to enable the top of the front rake angle fine adjustment knob to be flush with the 15-degree scale on the front rake angle scale mark, adjusting the abduction angle fine adjustment knob, and enabling the screw pointer to point to the 45-degree scale on the abduction angle scale mark; in the operation process, a doctor can finely adjust the anteversion angle of the acetabular cup by rotating the anteversion angle fine adjustment knob according to the actual condition, and finely adjust the abduction angle of the acetabular cup by rotating the abduction angle fine adjustment knob;
s5, fixing the acetabular cup and the pelvis of the patient, removing the positioning claws, separating the connecting head from the mounting head, and then removing the mounting head from the acetabular cup.
The invention has the beneficial effects that:
1. the adjusting rod, the connector, the cross universal shaft and the holding rod form a connecting rod mechanism, a doctor can finely adjust the abduction angle and the anteversion angle of the acetabular cup according to actual conditions in the operation process, and the abduction angle and the anteversion angle are not interfered with each other in the angle adjusting process; in addition, the invention can realize the fixation of the adjusting angle of the abduction angle and the anteversion angle without an additional fixing device, and the fixation is not changed any more, thereby improving the positioning accuracy.
2. The positioning claw can be reconstructed according to the pelvic characteristics of different patients, and has the advantage of personalized customization, the positioning claw and the mounting head can be detached, the positioning claw is mounted when in use, and the positioning claw is dismounted after the use is finished; and only the positioning claws are customized individually, the rest are standardized products, a metal machining structure can be adopted, the operation effect is improved, meanwhile, the operation cost is greatly reduced, the operation efficiency is improved, and the method has good market popularization value.
3. The invention closely fits the claws of the positioning claw with the positioning area with complete hipbone character of the patient, and can still give accurate and stable positioning and support to the placement center of the prosthesis under the condition that the bone character mark of the acetabular lip disappears, thereby overcoming the problems that the reference character is lost when the acetabular prosthesis is placed and the acetabular center is difficult to determine because bone defect generally exists in acetabular revision surgery and the characteristic of the acetabular lip disappears; the positioning device has simple structure and small volume, only needs to cut the skin of the positioning point minimally invasively during the operation, has small operation cut, is favorable for reducing the pain of a patient, and shortens the operation healing time.
4. The angle adjusting devices of the invention are provided with scales, and the initial scales are respectively an abduction angle of 45 degrees and a forward inclination angle of 15 degrees, and can be adjusted in a certain range; in the operation, if a doctor needs to adjust the abduction angle and the anteversion angle of the prosthesis according to the actual situation, the precise adjustment can be carried out according to the anteversion angle scale mark and the abduction angle scale mark. Meanwhile, the mounting head is connected with the connector through the magnetic attraction structure, the connector is connected with the holding rod, the dismounting is convenient, the acetabular prostheses of different models can be matched, and the applicability is stronger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of the overall structure of the embodiment of the present invention.
Fig. 2 is a perspective view of the overall structure of the embodiment of the present invention.
FIG. 3 is a schematic view of the assembly of the connecting head, the positioning pawl and the holding rod in the embodiment of the invention.
FIG. 4 is a top view of a connector and acetabular cup connection in an embodiment of the invention.
FIG. 5 is a schematic view of the assembly of the positioning pawl in an embodiment of the present invention.
Fig. 6 is a schematic view of the internal structure of the angle adjusting disk in the embodiment of the present invention.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a schematic perspective view of an angle adjustment plate according to an embodiment of the present invention.
FIG. 9 is a schematic view of the assembly of the angle adjusting plate and the grip of the embodiment of the present invention.
Fig. 10 is a schematic view showing the assembly of the anteversion angle fine adjustment knob and the angle adjustment disk in the embodiment of the invention.
Fig. 11 is a schematic view showing the assembly of the abduction angle fine adjustment knob and the angle adjustment disc in the embodiment of the present invention.
Fig. 12 is an assembly schematic view of a mounting head and a connecting head in an embodiment of the present invention.
Fig. 13 is a cross-sectional view of fig. 12.
Fig. 14 is a schematic structural view of an angle adjustment disk in the embodiment of the present invention.
In the figure, 1, a holding rod, 2, a positioning claw, 2-1, a U-shaped joint, 3, an installation head, 4, a connector, 5, an acetabular cup, 5-1, a fixing hole, 6, a first magnet, 7, a second magnet, 8, a first fixing screw, 9, a second fixing screw, 10, a cross universal shaft, 10-1, a transverse shaft, 10-2, a longitudinal shaft, 11, a first connecting arm, 12, a second connecting arm, 13, a connecting lug, 14, a rotating shaft, 15, an angle adjusting disc, 15-1, a front cover, 15-2, a rear cover, 15-3, a circular hole, 16, a first screw rod, 17, a second screw rod, 18, a forward inclination angle fine adjusting knob, 19, an abduction angle fine adjusting knob, 20, 21, a first sliding groove, 22, a second sliding groove, 23, an arc sliding groove, 24, a forward inclination angle scale line, 25, 26, a screw rod pointer, 27. a third fixing screw, 28, a fourth fixing screw, 29, a rubber sleeve, 30, an adjusting rod, 31, a through hole, 32, a set screw, 33, a fixed seat, 34, a cylindrical component, 35, a hip bone, 35-1, an ischial tuberosity, 35-2, a pubic tuberosity, and 35-3, an anterior superior iliac spine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The acetabular prosthesis positioning device for the unilateral hip arthroplasty in the embodiment of the invention is shown in fig. 1-2 and comprises a positioning device and an angle adjusting device; the positioning device comprises a holding rod 1 and a positioning claw 2, the positioning claw 2 is arranged on the holding rod 1, the handle of the holding rod 1 is knurled to increase friction force, the positioning claw 2 is obtained by personalized reconstruction according to pelvic bone characteristics of different patients, the positioning claw 2 can be replaced and disassembled, the positioning claw 2 is positioned in vitro, the claws of the positioning claw 2 are tightly attached to a positioning area with complete bony characteristics of the patient's hip bone 35, for example, the anterior superior iliac spine 35-3, the ischial tuberosity 35-1 and the pubic tuberosity 35-2 on the patient's unilateral hip bone 35 can be selected as the positioning area, because the three areas of the anterior superior iliac spine 35-3, the ischial tuberosity 35-1 and the pubic tuberosity 35-2 have high identification degree and intact bony characteristics, under the condition that the bony mark of the acetabulum lip disappears, accurate stable positioning and supporting can still be given to the placement center of the prosthesis; secondly, the positioning area is positioned on the single-side hip bone 35 of the patient, compared with the positioning device with the positioning points positioned on the two sides of the hip bone 35, the positioning device has simple structure and small volume, only needs to cut the skin of the three positioning points minimally invasively during the operation, has small operation cut, is beneficial to reducing the pain of the patient and shortening the operation healing time; the positioning area corresponding to the claws of the positioning claw 2 of the invention can be two, three, four or more.
The angle adjusting device comprises a connector 4, a cross universal shaft 10, an angle adjusting disc 15, an adjusting rod 30, a first screw 16 and a second screw 17, the lower end of the holding rod 1 is riveted with the connector 4 through the cross universal shaft 10, the connector 4 is detachably connected with the acetabular cup 5 through the mounting head 3, the holding rod 1, the cross universal shaft 10, the connector 4 and the mounting head 3 are coaxial, the center of the cross universal shaft 10 is coincident with the center of the acetabular cup 5, and the center of the acetabular prosthesis is prevented from displacement deviation when the angle is finely adjusted; the transverse axis 10-1 (X axis direction) and the longitudinal axis 10-2 (Y axis direction) of the cross universal shaft 10 are mutually vertical, the transverse axis 10-1 is positioned on an adjusting plane of a front rake angle of the acetabular cup 5, the connector 4 is rotatably connected with the lower end of the adjusting rod 30 on an extension line of the transverse axis 10-1, the upper end of the adjusting rod 30 (Z axis direction) is provided with a first screw 16, the first screw 16 penetrates through an angle adjusting disc 15 and is in threaded connection with a front rake angle fine adjusting knob 18, the front rake angle fine adjusting knob 18 is in clearance fit with the angle adjusting disc 15 through an I-shaped structure, and the angle adjusting disc 15 is fixedly connected with the holding rod 1; the adjusting rod 30 is matched with the second screw rod 17 through the connecting piece 20, the central line (Y-axis direction) of the second screw rod 17 is simultaneously vertical to the central line of the adjusting rod 30 and the central line of the transverse shaft 10-1, the second screw rod 17 extends out of a circular hole 15-3 on the angle adjusting disk 15 and is in threaded connection with the abduction angle fine adjustment knob 19, the abduction angle fine adjustment knob 19 is in clearance fit with the angle adjusting disk 15 through an I-shaped structure, the connecting piece 20 is provided with a sliding groove for providing space displacement for the second screw rod 17 when the front rake angle is adjusted, and the top and the bottom of the angle adjusting disk 15 are both provided with sliding grooves for providing space displacement for the first screw rod 16 when the abduction angle is.
The forward rake angle fine adjustment knob 18 is in clearance fit with the angle adjustment disc 15 through an I-shaped structure (the cross section is I-shaped), so that the forward rake angle fine adjustment knob 18 can rotate relative to the angle adjustment disc 15 and is used for adjusting a forward rake angle; when the abduction angle is adjusted, the adjusting mechanism can slide in the corresponding sliding groove together with the first screw 16, and meanwhile, the vertical displacement of the first screw 16 is limited by the I-shaped structure of the forward-inclination fine-adjustment knob 18, so that the forward inclination is limited to follow up, and the adjusting precision is improved. The abduction angle fine adjustment knob 19 is in clearance fit with the angle adjustment disc 15 through an I-shaped structure (the section is I-shaped), so that the abduction angle fine adjustment knob 19 can rotate relative to the angle adjustment disc 15 and is used for adjusting an abduction angle; when the front rake angle is adjusted, the sliding groove on the connecting piece 20 provides space displacement for the second screw rod 17, and meanwhile, the I-shaped structure of the abduction angle fine adjustment knob 19 limits the left-right displacement of the second screw rod 17, so that the abduction angle is limited to follow up, and the adjustment precision is improved. Rubber sleeves 29 are sleeved at the outer ends of the first screw rod 16 and the second screw rod 17 to prevent the forward-rake angle fine-adjustment knob 18 and the abduction angle fine-adjustment knob 19 from slipping.
As shown in fig. 3-4, the horizontal shaft 10-1 is rotatably connected with the connecting head 4 through a first connecting arm 11, the vertical shaft 10-2 is rotatably connected with the holding rod 1 through a second connecting arm 12, a radially extending connecting lug 13 is arranged on the outer wall of the connecting head 4 and the extension line of the horizontal shaft 10-1, the connecting lug 13 is rotatably connected with the lower end of the adjusting rod 30 through a rotating shaft 14, the center line of the rotating shaft 14 is simultaneously perpendicular to the center line of the adjusting rod 30 and the center line of the horizontal shaft 10-1, and the center line of the rotating shaft 14 is in the Y-axis direction; the acetabular cup 5 is provided with mounting holes 5-1, and screws penetrate through the mounting holes 5-1 to fix the acetabular cup 5 and the pelvis together.
As shown in figure 5, the positioning claw 2 is installed at a corresponding position of the holding rod 1 through the U-shaped joint 2-1, the holding rod 1 is provided with a limiting retainer ring for limiting the U-shaped joint 2-1 to move up and down, the installation accuracy of the positioning claw 2 is guaranteed, and the U-shaped joint 2-1 is detachably connected with the holding rod 1 through the set screw 32, so that the positioning claw 2 is convenient to replace.
As shown in fig. 6, the connecting member 20 is a hollow structure, the second screw 17 is installed inside the connecting member 20 through a cylindrical member 34, the axis of the cylindrical member 34 is perpendicular to the center line of the second screw 17 and the center line of the adjusting rod 30, a first sliding slot 21 parallel to the adjusting rod 30 is provided on the connecting member 20 at a position corresponding to the cylindrical member 34, and a second sliding slot 22 parallel to the adjusting rod 30 is provided on the connecting member 20 at a position corresponding to the second screw 17; when the forward rake angle is adjusted, the first slide groove 21 provides a displacement space for the cylindrical member 34, and the second slide groove 22 provides a displacement space for the second screw 17, so that the abduction angle is not affected.
As shown in fig. 6-11, the sliding slot at the top of the angle adjusting disk 15 is an arc sliding slot 23, the i-shaped structure of the anteversion angle fine adjustment knob 18 is in clearance fit with the arc sliding slot 23, the arc of the arc sliding slot 23 is an arc which takes the center of the acetabular cup 5 (i.e. the placement center of the acetabular prosthesis simulated by the computer) as the center of circle and takes the length of the top of the angle adjusting disk 15 from the center of circle to the center of circle as the radius, the length of the arc sliding slot 23 is the arc length corresponding to the abduction angle fine adjustment of ± 10 °, an anteversion angle scale line 24 is arranged on the first screw 16 at the position flush with the top of the anteversion angle fine adjustment knob 18, the chord length passed by the anteversion angle fine adjustment of ± 5 ° is calculated by taking the projection length of the placement center of the acetabular prosthesis on the center of the rotating shaft 14 on the XY plane as the radius, the, the front rake angle is made to correspond to the length of the front rake scale line 24, and the corresponding front rake angle is marked on the front rake scale line 24; the 15-degree scale on the front inclination angle scale mark 24 is flush with the upper surface of the anteversion angle fine adjustment knob 18, and the anteversion angle of the acetabular cup 5 is 15 degrees.
The cylindrical component 34 is provided with a screw pointer 26, a through hole 31 is arranged on the angle adjusting disc 15 at a position corresponding to the screw pointer 26, the edge of the through hole 31 is provided with an abduction angle scale mark 25, and the abduction angle scale mark 25 is arranged on an arc chord corresponding to the arc sliding chute 23; calculating the chord length of the arc chord where the abduction angle scale mark 25 is positioned within the range of plus or minus 10 degrees of the fine adjustment of the abduction angle of the acetabular cup 5, wherein the chord length corresponds to the length of the abduction angle scale mark 25, so that the abduction angle corresponds to the length of the abduction angle scale mark 25, marking the corresponding abduction angle on the abduction angle scale mark 25, and taking a scale mark every 2 degrees; when the screw pointer 26 points to the 45 ° scale on the abduction angle scale 25, i.e. the abduction angle at which the acetabular cup 5 is placed is 45 °.
As shown in fig. 12-13, the connector 4 is coaxially nested with the mounting head 3 and connected through a magnetic structure, and the mounting head 3 is in threaded connection with the acetabular cup 5, so that the assembly and disassembly are convenient; the lower end of the connector 4 is coaxially nested with the upper end of the mounting head 3, the lower end of the connector 4 is connected with a first magnet 6 through a first fixing screw 8, the upper end of the mounting head 3 is connected with a second magnet 7 through a second fixing screw 9, and the magnetic poles of the opposite surfaces of the first magnet 6 and the second magnet 7 are opposite, so that the mounting head 3 is convenient to replace and simple to mount, the thread diameter of the mounting head 3 is matched with the size of a thread hole in the acetabular cup 5, and different mounting heads 3 can be adapted according to different types of acetabular cups 5; when the positioning is completed and the connector 4 needs to be separated from the mounting head 3, the connector only needs to be pulled off lightly, and the operation is simple, convenient and quick.
As shown in fig. 14, the angle adjusting plate 15 is composed of a front cover 15-1 and a rear cover 15-2, the arc chute 23 is composed of a combination of a front cover 15-1 and a half chute on the rear cover 15-2, the circular hole 15-3 on the angle adjusting plate 15 is composed of a combination of a front cover 15-1 and a half chute on the rear cover 15-2, which facilitates the installation of the forward-rake angle fine adjustment knob 18 and the abduction angle fine adjustment knob 19, the front cover 15-1 and the rear cover 15-2 are connected together by 4 third fixing screws 27, the holding rod 1 is provided with a fixing seat 33, and the rear cover 15-2 is fixedly connected with the fixing seat 33 by 2 fourth fixing screws 28.
The positioning method of the acetabulum prosthesis positioning device for the unilateral hip joint revision surgery in the embodiment of the invention adopts the acetabulum prosthesis positioning device for the unilateral hip joint revision surgery, and specifically comprises the following steps:
s1, reconstructing a pelvis region of a patient through medical image software, and placing a reconstructed pelvis three-dimensional model of the patient according to the human anatomy correct position, wherein because the acetabulum lip bony mark on the affected side in the revision surgery disappears, the acetabulum bony structure on the healthy side is symmetrical to the affected side along the sagittal plane to obtain a computer-simulated acetabulum center of the affected side, namely an acetabulum prosthesis installation center, the center line of the holding rod 1 is determined according to the computer-simulated acetabulum center and the normal direction of the plane with the anteversion angle of 15 degrees and the abduction angle of 45 degrees, the center of the cross universal shaft 10 is superposed with the acetabulum center, and the transverse shaft 10-1 of the cross universal shaft 10 is positioned on the adjusting plane of the anteversion angle;
establishing a coordinate system by taking the acetabulum center simulated by a computer as an origin, the upper and lower edge connecting lines of the acetabulum of the affected side simulated on the coronal plane as an Y axis and the front and rear edge connecting lines of the acetabulum of the affected side simulated on the horizontal plane as an X axis, the three anatomical planes of the human body are fixed and invariable according to the definitions of the abduction angle and the anteversion angle, the abduction angle is adjusted, namely the Y axis rotates around the X axis, the anteversion angle is adjusted, namely the X axis rotates around the Y axis, in order to ensure that the installation center of the acetabular prosthesis coincides with the center of the acetabulum when the angle is adjusted, the center line of the holding rod 1 is the normal of an XY plane and the acetabulum center is simulated by a computer, the abduction angle and the anteversion angle are adjusted by utilizing the characteristic that the cross universal shaft 10 can rotate in two vertical directions, the center of the cross universal shaft 10 coincides with the acetabulum center, the directions of the first screw 16 and the second screw 17 can be determined, and at the moment, the directions of the first screw 16 and the second screw 17 are respectively the Z-axis direction and the Y-axis direction.
S2, selecting a 2 cm-2 cm area of three characteristic points of the anterior superior iliac spine 35-3, the ischial tuberosity 35-1 and the pubic tuberosity 35-2 on the hip bone 35 of the symmetrical posterior affected pelvis three-dimensional model to perform reverse design, designing the height and the angle of three claws of the positioning claw 2 according to the installation position of the positioning claw 2 on the holding rod 1, designing threaded holes on the U-shaped joint 2-1 of the positioning claw 2, slicing through 3D software, printing and forming by adopting a 3D printer, performing personalized reconstruction according to pelvic bone characteristics of different patients, obtaining the positioning claw 2 according with the pelvic bone characteristics of the patients, and improving the positioning accuracy.
S3, positioning the acetabular cup 5: the positioning claw 2 is arranged at the determined installation position on the holding rod 1, the connector 4 at the lower end of the holding rod 1 is coaxially nested and detachably connected with the installation head 3, the installation head 3 is in threaded connection with the acetabular cup 5, a doctor holds the holding rod 1 to tightly attach the claws of the positioning claw 2 to the anterior superior iliac spine 35-3, the pubic tubercle 35-2 and the ischial tubercle 35-1 on the hip bone 35 respectively, so that the center of the acetabular cup 5 is coincided with the center of the acetabulum simulated by the computer;
preferably, the connector 4 and the mounting head 3 are coaxially nested and connected through a magnetic attraction structure, if the position of the fixing hole 5-1 on the acetabular cup 5 needs to be adjusted, the acetabular cup 5 can be slightly rotated, the position of the fixing hole 5-1 is adjusted until the position is proper, and then the positioning points on the positioning claw 2 are respectively attached to the areas of the anterior superior iliac spine 35-3, the pubic tubercle 35-2 and the ischial tubercle 35-1 on the hip bone, so that the acetabular cup 5 is positioned to the center of the acetabulum.
S4, adjustment of anteversion and abduction angles: adjusting the forward rake angle fine adjustment knob 18 to enable the top of the forward rake angle fine adjustment knob to be flush with the 15-degree scale on the forward rake angle scale mark 24, adjusting the abduction angle fine adjustment knob 19, and enabling the screw pointer 26 to point to the 45-degree scale on the abduction angle scale mark 25; in the operation process, a doctor can finely adjust the anteversion angle of the acetabular cup 5 by rotating the anteversion angle fine adjustment knob 18 and finely adjust the abduction angle of the acetabular cup 5 by rotating the abduction angle fine adjustment knob 19 according to the actual situation;
adjusting the abduction angle: the abduction angle fine adjustment knob 19 is rotated, the second screw 17 moves leftwards or rightwards relative to the angle adjusting disc 15 by utilizing the screw thread transmission principle, the adjusting rod 30 is pushed to swing, and the adjusting rod 30 drives the connecting head 4 to rotate around a transverse shaft 10-1 (namely an X shaft) of the cross universal shaft 10 through the connecting lug 13 by utilizing the lever principle, so that the fine adjustment within 35-55 degrees of the abduction angle of the acetabular cup 5 is completed; in the adjusting process, the forward rake angle fine adjustment knob 18 and the first screw 16 slide in the arc-shaped sliding groove 23 together, the first screw 16 is limited from moving up and down, the adjusting rod 30 slides in the sliding groove at the bottom of the angle adjusting disc 15, the adjustment of the abduction angle is only ensured, the forward rake angle is not changed, and the adjusting precision is improved.
Adjusting the front inclination angle: the forward inclination angle fine adjustment knob 18 is rotated, the first screw 16 moves downwards or upwards relative to the angle adjustment disc 15 by utilizing the screw thread transmission principle, the adjustment rod 30 is pushed to move downwards or upwards, and the connecting head 4 is driven to rotate around a longitudinal axis 10-2 (namely a Y axis) of the cross universal shaft 10 by utilizing the lever principle through the rotating shaft 14 and the connecting lug 13, so that the fine adjustment of the inclination angle of the acetabular cup 5 within 10-20 degrees is completed; in the adjusting process, the second screw rod 17 slides in the second sliding groove 22, the cylindrical component slides in the first sliding groove 21, and the abduction angle fine adjustment knob 19 limits the second screw rod 17 to move left and right, so that only the adjustment of the front rake angle is ensured, the abduction angle is not changed, and the adjusting precision is improved.
S5, screws penetrate through the fixing holes 5-1 to fix the acetabular cup 5 with the pelvis of the patient, the positioning claws 2 are removed, the connecting head 4 is separated from the mounting head 3, and then the mounting head 3 is removed from the acetabular cup 5.
When in use, the positioning claw 2 is installed, and after the use, the positioning claw 2 is detached; the adjusting rod 30, the connector 4, the cross universal shaft 10 and the holding rod 1 form a connecting rod mechanism, so that a doctor can finely adjust the abduction angle and the anteversion angle of the acetabular cup 5 according to actual conditions in the operation process, and the angle adjusting process is not influenced by each other; in addition, the invention can realize the fixation of the adjusting angle of the abduction angle and the anteversion angle without an additional fixing device, and the fixation is not changed any more, thereby improving the positioning accuracy.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. The acetabulum prosthesis positioning device for unilateral hip joint revision is characterized by comprising a holding rod (1), a positioning claw (2) is detachably mounted on the holding rod (1), the lower end of the holding rod (1) is connected with a connector (4) through a cross universal shaft (10), the connector (4) is detachably connected with an acetabulum cup (5) through an installing head (3), the holding rod (1), the cross universal shaft (10), the connector (4) and the installing head (3) are coaxial, and the center of the cross universal shaft (10) is coincided with the center of the acetabulum cup (5); a transverse shaft (10-1) of the cross universal shaft (10) is positioned on an adjusting plane of a front rake of the acetabular cup (5), the connector (4) is rotatably connected with the lower end of the adjusting rod (30) on an extension line of the transverse shaft (10-1), a first screw rod (16) is arranged at the upper end of the adjusting rod (30), the first screw rod (16) penetrates through an angle adjusting disc (15) and is in threaded connection with a front rake fine adjusting knob (18), the angle adjusting disc (15) is fixedly connected with the holding rod (1), and the front rake fine adjusting knob (18) is in clearance fit with the angle adjusting disc (15) through an I-shaped structure; the adjusting rod (30) is matched with the second screw rod (17) through the connecting piece (20), the central line of the second screw rod (17) is simultaneously vertical to the central line of the adjusting rod (30) and the central line of the transverse shaft (10-1), the second screw rod (17) extends out of the angle adjusting disc (15) and is in threaded connection with the abduction angle fine adjusting knob (19), the abduction angle fine adjusting knob (19) is in clearance fit with the angle adjusting disc (15) through an I-shaped structure, the connecting piece (20) is provided with a sliding groove for providing space displacement for the second screw rod (17) when the front rake angle is adjusted, and the top and the bottom of the angle adjusting disc (15) are both provided with sliding grooves for providing space displacement for the first screw rod (16) when the abduction angle is adjusted;
the positioning claw (2) is obtained by reconstruction according to pelvic characteristics of different patients, the positioning claw (2) is positioned in vitro, and claws of the positioning claw (2) are tightly attached to a positioning area with intact bony characteristics of the patient's hip bone (35);
the connector (4) is coaxially nested with the mounting head (3) and is connected with the mounting head (3) through a magnetic attraction structure, and the mounting head (3) is in threaded connection with the acetabular cup (5);
a transverse shaft (10-1) and a longitudinal shaft (10-2) of the cross universal shaft (10) are perpendicular to each other, the transverse shaft (10-1) is rotatably connected with the connector (4) through a first connecting arm (11), the longitudinal shaft (10-2) is rotatably connected with the holding rod (1) through a second connecting arm (12), connecting lugs (13) extending in the radial direction are arranged on the extension lines of the outer wall of the connector (4) and the transverse shaft (10-1), the connecting lugs (13) are rotatably connected with the lower end of the adjusting rod (30) through a rotating shaft (14), and the central line of the rotating shaft (14) is perpendicular to the central line of the adjusting rod (30) and the central line of the transverse shaft (10-1) simultaneously.
2. The acetabular prosthesis positioning device for unilateral hip arthroplasty according to claim 1, wherein the connector (20) is of a hollow structure, the second screw (17) is mounted inside the connector (20) through a cylindrical member (34), the axis of the cylindrical member (34) is perpendicular to the center line of the second screw (17) and the center line of the adjustment rod (30), a first sliding groove (21) parallel to the adjustment rod (30) is formed in the connector (20) at a position corresponding to the cylindrical member (34), and a second sliding groove (22) parallel to the adjustment rod (30) is formed in the connector (20) at a position corresponding to the second screw (17).
3. The acetabular prosthesis positioning device for unilateral hip arthroplasty according to claim 1, wherein the sliding groove at the top of the angle adjusting disc (15) is an arc-shaped sliding groove (23), the arc-shaped sliding groove (23) is an arc-shaped sliding groove which takes the center of the acetabular cup (5) as the center of a circle and the length of the top of the angle adjusting disc (15) from the center of the circle as the radius, a forward inclination angle scale line (24) is arranged on the first screw rod (16) at a position which is flush with the top of the forward inclination angle fine adjustment knob (18), and the forward inclination angle corresponds to the length of the forward inclination angle scale line (24).
4. The acetabular prosthesis positioning device for unilateral hip arthroplasty according to claim 2, wherein the cylindrical member (34) is provided with a screw pointer (26), the angle adjusting disc (15) is provided with a through hole (31) at a position corresponding to the screw pointer (26), the edge of the through hole (31) is provided with abduction angle scale marks (25), the abduction angle scale marks (25) are arranged on the arc chord corresponding to the arc chute (23), and the abduction angle corresponds to the length of the abduction angle scale marks (25).
5. The acetabular prosthesis positioning device for unilateral hip arthroplasty according to claim 1, characterized in that the angle adjustment disk (15) consists of an anterior cap (15-1) and a posterior cap (15-2), the anterior cap (15-1) and the posterior cap (15-2) being connected together by means of a third fixing screw (27).
6. The acetabular prosthesis positioning device for the unilateral hip arthroplasty according to claim 1, wherein the positioning claw (2) is arranged at a corresponding position on the holding rod (1) through a U-shaped joint (2-1), a limiting retainer ring for limiting the U-shaped joint (2-1) to move up and down is arranged on the holding rod (1), and the U-shaped joint (2-1) is detachably connected with the holding rod (1) through a set screw (32); a fixed seat (33) is arranged on the holding rod (1), the fixed seat (33) is fixedly connected with the angle adjusting disc (15), and a handle of the holding rod (1) is knurled; the outer ends of the first screw rod (16) and the second screw rod (17) are sleeved with rubber sleeves (29).
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| CN111134771A (en) * | 2020-02-29 | 2020-05-12 | 北京市春立正达医疗器械股份有限公司 | Customized acetabular guide plate and method of use thereof |
| CN111192498B (en) * | 2020-04-14 | 2020-07-03 | 上海龙慧医疗科技有限公司 | Multi-position hip joint artificial bone simulation operation demonstration device |
| CN112137775A (en) * | 2020-09-21 | 2020-12-29 | 中国医学科学院北京协和医院 | Angle positioning device in hip joint replacement |
| CN113017943B (en) * | 2021-03-17 | 2024-01-09 | 山东大学齐鲁医院(青岛) | Acetabular position change measuring device |
| CN114748221A (en) * | 2022-03-29 | 2022-07-15 | 北京长木谷医疗科技有限公司 | Positioning navigation system and acetabular prosthesis implanting method |
| CN115590594B (en) * | 2022-10-19 | 2024-01-30 | 北京长木谷医疗科技股份有限公司 | Surgical instrument, surgical robot and measuring method for implantation depth of acetabular cup prosthesis |
| CN116138938B (en) * | 2023-04-21 | 2023-07-28 | 北京爱康宜诚医疗器材有限公司 | Femoral head surface replacement positioning device |
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| DE20122550U1 (en) * | 2001-09-24 | 2006-03-09 | Eska Implants Gmbh & Co. | Instrument for setting a cutter or an artificial pelvic cup in an acetabulum |
| DE10200690B4 (en) * | 2002-01-10 | 2005-03-03 | Intraplant Ag | Aid for implantation of a hip joint endoprosthesis |
| US8992538B2 (en) * | 2008-09-30 | 2015-03-31 | DePuy Synthes Products, Inc. | Customized patient-specific acetabular orthopaedic surgical instrument and method of use and fabrication |
| US20110060339A1 (en) * | 2009-09-09 | 2011-03-10 | De Wekker Erwin | Hip surgery assembly |
| US9055975B2 (en) * | 2012-09-29 | 2015-06-16 | DePuy Synthes Products, Inc. | Surgical instrument and method of positioning an acetabular prosthetic component |
| US20140276872A1 (en) * | 2013-03-15 | 2014-09-18 | Otismed Corporation | Customized acetabular cup positioning guide and system and method of generating and employing such a guide |
| US9168154B2 (en) * | 2013-12-29 | 2015-10-27 | Kambiz Behzadi | Prosthesis installation systems and methods |
| CN204072393U (en) * | 2014-09-02 | 2015-01-07 | 北京纳通科技集团有限公司 | A kind of guide post positioner |
| CN204106119U (en) * | 2014-09-28 | 2015-01-21 | 昆明市中医医院 | Reamer for hip arthroplasty,acetabulum is guide locating device provided |
| JP2018033793A (en) * | 2016-09-01 | 2018-03-08 | 日本ストライカー株式会社 | Gauge for implant and instrument assembly for implant |
| CN106419998B (en) * | 2016-10-27 | 2023-08-18 | 中山大学附属第一医院 | Acetabular rasping and acetabular cup prosthesis implantation positioning guide device and positioning method thereof |
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