AU2021105382A4 - Testing die device capable of monitoring head-acetabulum position relationship and edge impact risk - Google Patents
Testing die device capable of monitoring head-acetabulum position relationship and edge impact risk Download PDFInfo
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- AU2021105382A4 AU2021105382A4 AU2021105382A AU2021105382A AU2021105382A4 AU 2021105382 A4 AU2021105382 A4 AU 2021105382A4 AU 2021105382 A AU2021105382 A AU 2021105382A AU 2021105382 A AU2021105382 A AU 2021105382A AU 2021105382 A4 AU2021105382 A4 AU 2021105382A4
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- testing die
- femoral head
- acetabulum
- femoral
- pressure sensors
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 210000000588 acetabulum Anatomy 0.000 abstract description 12
- 210000004394 hip joint Anatomy 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 3
- 238000011882 arthroplasty Methods 0.000 abstract description 3
- 210000001624 hip Anatomy 0.000 abstract description 3
- 238000012430 stability testing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- A61F2/468—Testing instruments for 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
- A61F2/4684—Trial or dummy prostheses
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a testing die device capable of monitoring a head-acetabulum
position relationship and an edge impact risk, and belongs to the technical field of
medical equipment. After a hip joint is restored in Total Hip Arthroplasty (THA),
different motion actions and angles of the hip joint are tested, a pressure of a contact
region of a femoral head and an acetabulum, a distribution shape of a contact surface
and key parameters after a testing die is reset are acquired, a position of the femoral
head relative to the acetabulum is measured, data, such as a pressure between the
femoral head and the acetabulum, a motion range of a femoral stem relative to the
acetabulum, and a potential impact position, is acquired, the impact risk is analyzed
and prejudged, and a personalized mounting angle of an acetabular cup and a femoral
prosthesis is made. According to the invention, by a dot matrix pressure sensor
technology, the hip joint stability testing link carried out by experience at present is
specifically quantified, and the impact and dislocation risk is more intuitively shown
to a surgeon so as to facilitate regulation of a position of the prosthesis during an
operation. Dot matrix pressure sensors of the femoral head testing die are designed to
be distributed on a half of a sphere so as to avoid interference caused by overlapping
of combined dot matrix pressure shapes.
1/6
8
4
5
Fig. 1
Description
1/6
8
4
5
Fig. 1
Description
Testing Die Device Capable of Monitoring Head-Acetabulum Position Relationship and Edge Impact Risk
TECHNICAL FIELD The present invention relates to the technical field of medical equipment, and
particularly relates to a testing die device capable of monitoring a head-acetabulum
position relationship and an edge impact risk.
BACKGROUND Total Hip Arthroplasty (THA) is the optimal treatment selection for the hip joint
end-stage diseases at present, can effectively solve problems of pain, limitation to
motion, dysfunction and the like of patients, and improves postoperative life quality.
In the prior art, the patent with the Publication Number CN103796616B provides total
hip arthroplasty which keeps proper mechanics, including: (1) a femur part, including
a femoral head; and (b) an acetabulum part, including an acetabular cup and an
acetabular cup insertion piece, the acetabular cup insertion piece being set to
accommodate the femoral head in size, wherein the femoral head is set to have a
sphere center matched with a sphere center of a natural femoral head of a patient in
size, wherein the acetabular cup is set to have a cavity in size, and the cavity has a
sphere center matched with a sphere center of a natural acetabulum of the patient,
wherein the center of the femoral head of the femur part is concentric with the center
of the cavity of the acetabular cup. However, how to control a head-acetabulum angle
and prejudge an impact risk is not mentioned.
SUMMARY The embodiments of the present invention provide a testing die device capable of
monitoring a head-acetabulum position relationship and an edge impact risk so as to
solve the technical problem in the prior art that after a testing die is restored, a
pressure of a contact region of a femoral head testing die and an acetabulum, a
distribution shape of a contact surface and key parameters cannot be acquired.
The embodiments of the present invention adopt the following technical solution: a
testing die device capable of monitoring a head-acetabulum position relationship and
an edge impact risk includes first pressure sensors, a femoral head testing die, an
acetabular cup and a processor, wherein the femoral head testing die is arranged in a
sphere shape; a plurality of first pressure sensors are laid out on the femoral head
testing die; the acetabular cup sleeves the femoral head testing die; the femoral head
testing die is provided with a notch; a femoral stem is arranged at the notch of the
femoral head testing die; a data collector and a signal emitting device are arranged in
the femoral head testing die; the plurality of first pressure sensors communicate with
the data collector; and the signal emitting device respectively communicates with the
data collector and the processor.
Further, a layer of contact lining is arranged on an inner side wall of the acetabular
cup, the contact lining is arranged in a hemisphere shape, and a circle of second
pressure sensors are arranged at the edge position of the contact lining.
Further, the first pressure sensors on the femoral head testing die are laid out in a
hemisphere shape on one side close to the acetabular cup.
Further, a main body material of the femoral head testing die is highly cross-linked polyethylene or common polyethylene, and a diameter of a sphere portion of the femoral head testing die can be 28 mm, 32 mm, 36 mm and 40 mm.
Further, the signal emitting device is a wireless emitter.
Further, the testing die device capable of monitoring the head-acetabulum position
relationship and the edge impact risk further includes a display device, and the display
device communicates with the processor.
The above at least one technical solution adopted by the embodiments of the present
invention can achieve the following beneficial effects.
Firstly, by designing one set of testing die device capable of monitoring the
head-acetabulum position relationship and the edge impact risk, the present invention
implements a case that after the hip joint is restored in the THA, different motion
actions and angles of the hip joint are tested, the pressure of the contact region of the
femoral head and the acetabulum, the distribution shape of the contact surface and the
key parameters after the testing die is restored are acquired, a position of the femoral
head relative to the acetabulum is measured, data, such as a pressure between the
femoral head and the acetabulum, a motion range of the femoral stem relative to the
acetabulum, and a potential impact position, is acquired, the impact risk is analyzed
and prejudged, and a personalized mounting angle of the acetabular cup and a femoral
prosthesis is made. According to the present invention, by a dot matrix pressure sensor
technology, the hip joint stability testing link carried out by experience at present is
specifically quantified, and the impact and dislocation risk is more intuitively shown
to a surgeon so as to facilitate regulation a position of the prosthesis during an
operation. The first dot matrix pressure sensors of the femoral head testing die are designed to be distributed on a half of the sphere so as to avoid interference caused by overlapping of combined dot matrix pressure shapes.
Secondly, for the contact lining, the center of the contact lining is used as an origin, an
abscissa axis and an ordinate axis are made, a 360° quadrant is set, the first pressure
sensors on the femoral head testing die are distributed in a hemisphere shape, when
the femoral stem is perpendicular to a cup mouth plane of the acetabular cup, the first
pressure sensors on the femoral head testing die are in full contact with the contact
lining, and at the moment, a contact region is of a round sphere shape; when the
femoral head testing die together with the femoral stem rotates relative to the contact
lining, a shape of a pressure dot matrix combination formed by contact can be
gradually changed along with rotation, and a relative rotation direction and rotation
angle of the femoral stem can be measured according to the shape of the dot matrix
combination; and when the neck of the femoral stem impacts with the edge of the
contact lining, at the moment, the second pressure sensors at the edge of the contact
lining are triggered, at the same time, dislocation of the femoral head testing die is
caused by impact, the dot matrix pressure of the head-acetabulum contact region
disappears, and accordingly, the impact dislocation risk can be judged.
BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrated herein are used for providing further
understanding on the present invention and constitute one part of the present invention,
and schematic embodiments of the present invention and illustration thereof are used
for explaining the present invention, but are not intended to improperly limit the
present invention. In the accompanying drawings:
Fig. 1 is an exploded view of a layout state of a femoral head testing die, an acetabular
cup and a contact lining in the present invention;
Fig. 2 is a schematic diagram of a layout state of the femoral head testing die, the
acetabular cup and the contact lining in the present invention;
Fig. 3 is a flow chart of data transmission in the present invention;
Fig. 4 is a schematic diagram of a leg action in a hip joint stability testing process in
the present invention;
Fig. 5 is a diagram of a head-acetabulum relative position relationship in the present
invention;
Fig. 6 is a first reference diagram of calculation of a head-acetabulum relative position
in the present invention; and
Fig. 7 is a second reference diagram of calculation of a head-acetabulum relative
position in the present invention.
REFERENCE SIGNS femoral head testing die 1; acetabular cup 2; processor 3; first pressure sensor 4;
second pressure sensor 41; femoral stem 5; data collector 6; signal emitting device 7;
contact lining 8; display device 9.
DETAILED DESCRIPTION To make the objectives, technical solutions and advantages of the present invention
clearer, a clear and complete description of the technical solutions in the present
invention will be given below, in combination with the specific embodiments of the
present invention and the corresponding accompanying drawings. Apparently, the
embodiments described below are a part, but not all, of the embodiments of the
present invention. All of the other embodiments, obtained by those of ordinary skill in
the art based on the embodiments of the present invention without any inventive
efforts, fall into the protection scope of the present invention.
The technical solution provided by each embodiment of the present invention will be
illustrated in detail below in combination with the accompanying drawings.
An embodiment of the present invention provides a testing die device capable of
monitoring a head-acetabulum position relationship and an edge impact risk,
including a femoral head testing die 1, an acetabular cup 2, a processor 3 and first
pressure sensors 4. The femoral head testing die 1 is arranged in a sphere shape; a
plurality of first pressure sensors 4 are provided; the plurality of first pressure sensors
4 are laid out on the femoral head testing die 1 in a dot matrix type; the acetabular cup
2 sleeves the femoral head testing die 1; the femoral head testing die 1 is provided
with a notch; a femoral stem 5 is arranged at the notch of the femoral head testing die
1; by mutual cooperation of the femoral head testing die 1 and the acetabular cup 2, a
pressure of a contact region of the femoral head testing die 1 and the acetabular cup 2,
a distribution shape of a contact surface and key parameters can be simulated, a
position of the femoral head testing die 1 relative to the acetabular cup 2 is measured,
data, such as a pressure between the femoral head testing die 1 and the acetabular cup
2, a motion range of the femoral stem 5 relative to the acetabular cup 2, and a
potential impact position, is acquired, the impact risk is analyzed and prejudged, and a
personalized mounting angle of the acetabular cup 2 and a femoral prosthesis is made;
a data collector 6 and a signal emitting device 7 are arranged in the femoral head
testing die 1; the plurality of first pressure sensors 4 communicate with the data
collector 6; pressure information, by the first pressure sensors 4, is transferred to the
data collector 6 for collection and output; a power supply assembly is embedded in
the femoral head testing die 1; electric energy is provided for electronic elements in
the femoral head testing die 1 by the power supply assembly; the signal emitting
device 7 respectively communicates with the data collector 6 and the processor 3; and
the pressure information, by the data collector 6, is transferred to the processor 3 through the signal emitting device 7 for calculation processing.
Preferably, a layer of contact lining 8 is arranged on an inner side wall of the
acetabular cup 2, the contact lining 8 is arranged in a hemisphere shape, a circle of
second pressure sensors 41 are arranged at an edge position of the contact lining 8,
and the second pressure sensors 41 are connected with the power supply assembly and
the data collector 6 in the femoral head testing die1 through transmission lines.
When the femoral stem 5 impacts with the edge of the contact lining 8, pressure data
is generated; for the contact lining 8, the center of the contact lining is used as an
origin, an abscissa axis and an ordinate axis are made, and a 360° quadrant is set; and
when the neck of the femoral stem 5 impacts with the edge of the contact lining 8, at
the moment, the second pressure sensors 41 at the edge of the contact lining 8 are
triggered, at the same time, dislocation of the femoral head testing die 1 is caused by
impact, a dot matrix pressure of a head-acetabulum contact region disappears, and
accordingly, the impact dislocation risk can be judged.
The first pressure sensors 4 and the second pressure sensors 41 each can adopt an
array type first pressure sensor developed by America Tekscan, Inc.
Preferably, the first pressure sensors 4 on the femoral head testing die 1 are laid out in
a hemisphere shape on one side close to the acetabular cup 2 and there is no first
pressure sensor 4 on the rest portion. The first pressure sensors 4 are load out on the
femoral head testing die 1 in a hemisphere shape, and thus, pressure data acquired by
the first pressure sensors 4 is processed through the processor and displayed as a
corresponding dot matrix pressure graph (refer to a dotted shaded portion in Figs. 5-7)
on a display. A line ab is set as a diameter of the hemisphere section of the femoral head testing die 1, the line ab is an axis when the femoral head testing die 1 rotates relative to the acetabular cup 2, and a length of the line ab is the same as a diameter of the femoral head testing die 1; two points c and d represent projections of intersections of a perpendicular line of the line ab on the hemisphere section of the femoral head testing die 1 and the edge of the hemisphere section on a cup mouth plane of the acetabular cup 2, a line cd and the line ab are perpendicular to each other.
When the femoral head testing die 1 is perpendicular to the cup mouth plane of the
acetabular cup 2, the line cd and the line ab are the same in length. When the femoral
head testing die 1 rotates relative to the acetabulum, the line cd can be gradually
shortened along with rotation, a rotation direction of the femoral head testing die 1
can be judged by a direction of one side where the dot matrix pressure graph gradually
disappears, and the rotation direction of the femoral head testing die 1 relative to the
contact lining 8 is determined according to a position in the quadrant. The length of
the line ab is the diameter of the femoral head testing die 1, meanwhile, the dot matrix
pressure graph is subjected to calculation to obtain the length of the line cd, an
inclination angle of rotation of a hemisphere section can be calculated by a calculation
formula of arcsincd/ab, and the rotation angle of the femoral head testing die 1
relative to the contact lining 8 is determined. Accordingly, the rotation direction and
angle relationship of the femoral head testing die 1 relative to the contact lining 8 can
be measured.
Preferably, a main body material of the femoral head testing die 1 is highly
cross-linked polyethylene or common polyethylene, and a diameter of a sphere
portion of the femoral head testing die 1 can be 28 mm, 32 mm, 36 mm and 40 mm.
Medical staff can use different sizes of femoral head testing dies 1 according to
physical conditions of users so as to carry out adaptation to patients with different
conditions.
Preferably, the signal emitting device 7 is a wireless emitter, and can be connected
with the processor 3 by adopting a Bluetooth module, and the signal emitting device 7
in this patent can also be connected in a wired mode and preferably in a wireless
connection mode.
Preferably, the testing die device further includes a display device 9, the display
device 9 communicates with the processor 3, and the data processed by the processor
3 is displayed by the display device 9 so as to facilitate research of the medical staff.
The above merely are exemplary embodiments of the present invention, and are not
intended to limit the present invention. For those skilled in the art, various
modifications and changes can be made to the present invention. Any modifications,
equivalent replacements, improvements and the like within the spirit and principle of
the present invention shall fall within the scope of claims of the present invention.
Claims (5)
1. A testing die device capable of monitoring a head-acetabulum position relationship
and an edge impact risk, comprising first pressure sensors (4), and characterized by
further comprising a femoral head testing die (1), an acetabular cup (2) and a
processor (3), wherein the femoral head testing die (1) is arranged in a sphere shape, a
plurality of first pressure sensors (4) are provided, the plurality of first pressure
sensors (4) are laid out on the femoral head testing die (1) in a dot matrix, the
acetabular cup (2) sleeves the femoral head testing die (1), the femoral head testing
die (1) is provided with a notch, a femoral stem (5) is arranged at the notch of the
femoral head testing die (1), a data collector (6), a signal emitting device (7) and a
power supply assembly are arranged in the femoral head testing die (1), the plurality
of first pressure sensors (4) communicate with the data collector (6) and the power
supply assembly, and the signal emitting device (7) respectively communicates with
the data collector (6) and the processor (3).
2. The testing die device capable of monitoring the head-acetabulum position
relationship and the edge impact risk according to claim 1, characterized in that a
layer of contact lining (8) is arranged on an inner side wall of the acetabular cup (2),
the contact lining (8) is arranged in a hemisphere shape, a circle of second pressure
sensors (41) are arranged at an edge position of the contact lining (8), and the second
pressure sensors (41) are connected with the power supply assembly and the data
collector (6).
3. The testing die device capable of monitoring the head-acetabulum position
relationship and the edge impact risk according to claim 1 or 2, characterized in that the first pressure sensors (4) on the femoral head testing die (1) are laid out in a hemisphere shape on one side close to the acetabular cup (2).
4. The testing die device capable of monitoring the head-acetabulum position
relationship and the edge impact risk according to claim 1 or 2, characterized in that a
main body material of the femoral head testing die (1) is highly cross-linked
polyethylene or common polyethylene, and a diameter of a sphere portion of the
femoral head testing die (1) can be 28 mm, 32 mm, 36 mm and 40 mm.
5. The testing die device capable of monitoring the head-acetabulum position
relationship and the edge impact risk according to claim 1 or 2, characterized in that
the signal emitting device (7) is a wireless emitter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110835211.7A CN113599028A (en) | 2021-07-23 | 2021-07-23 | Can monitor examination mould device of cephalic mortar position relation and marginal striking risk |
| CN202110835211.7 | 2021-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021105382A4 true AU2021105382A4 (en) | 2021-10-14 |
Family
ID=78007440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021105382A Ceased AU2021105382A4 (en) | 2021-07-23 | 2021-08-12 | Testing die device capable of monitoring head-acetabulum position relationship and edge impact risk |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113599028A (en) |
| AU (1) | AU2021105382A4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117860449B (en) * | 2024-03-11 | 2024-06-07 | 中国人民解放军总医院第四医学中心 | A examination mould device for robot assists hip joint replacement art |
-
2021
- 2021-07-23 CN CN202110835211.7A patent/CN113599028A/en active Pending
- 2021-08-12 AU AU2021105382A patent/AU2021105382A4/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN113599028A (en) | 2021-11-05 |
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|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |