CN215349765U - Can monitor examination mould device of cephalic mortar position relation and marginal striking risk - Google Patents
Can monitor examination mould device of cephalic mortar position relation and marginal striking risk Download PDFInfo
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- CN215349765U CN215349765U CN202121685409.3U CN202121685409U CN215349765U CN 215349765 U CN215349765 U CN 215349765U CN 202121685409 U CN202121685409 U CN 202121685409U CN 215349765 U CN215349765 U CN 215349765U
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- femoral head
- head test
- risk
- cup
- acetabular cup
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- 239000004570 mortar (masonry) Substances 0.000 title claims description 3
- 238000012360 testing method Methods 0.000 claims abstract description 49
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 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
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 210000004394 hip joint Anatomy 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 238000012430 stability testing Methods 0.000 abstract description 2
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 210000000588 acetabulum Anatomy 0.000 description 2
- 238000011882 arthroplasty Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000003739 neck Anatomy 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 208000012659 Joint disease Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
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Abstract
The utility model discloses a test mold device capable of monitoring the position relation of a acetabular cup and the risk of marginal impact, which belongs to the technical field of medical equipment. The utility model specifically quantifies the hip joint stability testing link which is performed by experience at present through the dot matrix pressure sensor technology, more intuitively displays the impact and dislocation risks to a surgeon and facilitates the adjustment of the position of the prosthesis in the surgery. The design of the lattice pressure sensors of the femoral head test mold is distributed in a half of the sphere, so that the interference caused by the overlapping of the pressure shapes of the combined lattices is avoided.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a die testing device capable of monitoring the position relation of a knob and the risk of edge impact.
Background
Total Hip Arthroplasty (THA) is the best treatment option for the current final stage Hip joint diseases, can effectively solve the problems of pain, limited movement, dysfunction and the like of patients, and improves the quality of life after operation.
The prior art patent publication CN103796616B provides a total hip arthroplasty that maintains proper mechanics, comprising: (a) a femoral component comprising a femoral head; and (b) an acetabular component comprising an acetabular cup and an acetabular cup insert sized to receive the femoral head, wherein the femoral head is sized to have a spherical center that matches a spherical center of a patient's native femoral head, wherein the acetabular cup is sized to have a cavity having a spherical center that matches a spherical center of a patient's native acetabulum, and wherein a femoral head center of the femoral component is concentric with a center of the cavity of the acetabular cup. There is no mention of how to control the angle of the socket and predict the risk of impact.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a trial mold device capable of monitoring the position relation of a acetabular bone and the risk of edge impact, and aims to solve the technical problems that the pressure of a contact area between a femoral head trial mold and the acetabular bone, the distribution shape of a contact surface and key parameters after the trial mold is reset cannot be acquired in the prior art.
The embodiment of the utility model adopts the following technical scheme: a test mold device capable of monitoring the position relation of a femoral head and the risk of edge impact comprises a first pressure sensor, a femoral head test mold, an acetabular cup and a processor, wherein the femoral head test mold is arranged in a spherical shape, a plurality of first pressure sensors are distributed on the femoral head test mold, the acetabular cup is sleeved on the femoral head test mold, a notch is formed in the femoral head test mold, a femoral stem is arranged at the position of the notch of the femoral head test mold, a data collector and a signal transmitting device are arranged in the femoral head test mold, the plurality of first pressure sensors are communicated with the data collector, and the signal transmitting device is communicated with the data collector and the processor respectively.
Furthermore, a layer of contact lining is arranged on the inner side wall of the acetabular cup, the contact lining is arranged in a hemispherical shape, and a circle of second pressure sensor is arranged at the edge position of the contact lining.
Furthermore, a first pressure sensor on the femoral head test mold is arranged on one side close to the acetabular cup in a hemispherical shape.
Furthermore, the femoral head trial model main body material is high cross-linked polyethylene or common polyethylene, and the diameter of the spherical part of the femoral head trial model can be 28mm, 32mm, 36mm and 40 mm.
Further, the signal transmitting device is a wireless transmitter.
Further, the system also comprises a display device, and the display device is communicated with the processor.
The embodiment of the utility model adopts at least one technical scheme which can achieve the following beneficial effects:
firstly, the utility model realizes the test of different movement actions and angles of the hip joint after the hip joint is reset in the THA operation by designing a set of test die device capable of monitoring the position relation of the acetabular cup and the edge impact risk, collects the pressure, the distribution shape of the contact surface and key parameters of the contact area of the femoral head and the acetabular cup after the test die is reset, calculates the position of the femoral head relative to the acetabular cup, obtains the data of the pressure between the acetabular cups, the movement range of the femoral stem relative to the acetabular cup, the potential impact position and the like, analyzes and pre-judges the impact risk, and formulates the individualized installation angle of the acetabular cup and the femoral prosthesis. The utility model specifically quantifies the hip joint stability testing link which is performed by experience at present through the dot matrix pressure sensor technology, more intuitively displays the impact and dislocation risks to a surgeon and facilitates the adjustment of the position of the prosthesis in the surgery. The design of the first pressure sensors of the lattice of the femoral head test mold is distributed in a half of the sphere, so that the interference caused by the overlapping of the pressure shapes of the combined lattice is avoided.
Secondly, regarding the contact liner, taking the center of the contact liner as an origin, making a horizontal axis and a vertical axis, establishing a 360-degree quadrant, wherein the first pressure sensors of the femoral head test mold are distributed in a hemispherical shape, when the femoral stem is vertical to the plane of the acetabular cup mouth, the first pressure sensors on the femoral head test mold are in full contact with the contact liner, and at the moment, the contact area is in a spherical shape; when the femoral head test mold and the femoral stem rotate relative to the contact lining, the shape of the contacted pressure lattice combination can gradually change along with the rotation, and the relative rotation direction and the rotation angle of the femoral stem can be measured and calculated according to the shape of the lattice combination; when femoral stem neck and contact inside lining edge take place the striking, contact inside lining edge second pressure sensor this moment is triggered, causes the femoral head examination mould simultaneously because of the striking and takes place the dislocation, and the dot matrix pressure of knob contact area disappears, can judge the striking dislocation risk according to this.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is an exploded view of a femoral head trial, an acetabular cup and a contact liner of the present invention in a deployed state;
FIG. 2 is a schematic view of the layout of a femoral head trial, an acetabular cup and a contact liner of the utility model;
FIG. 3 is a flow chart of data transmission according to the present invention;
FIG. 4 is a schematic view of the leg movements during the hip joint stability test according to the present invention;
FIG. 5 is a diagram showing the relative position of the cup in the present invention;
FIG. 6 is a first reference diagram for calculating the relative position of the cup according to the present invention;
fig. 7 is a reference diagram II for calculating the relative position of the cup according to the present invention.
Reference numerals
The femoral head test model comprises a femoral head test model 1, an acetabular cup 2, a processor 3, a first pressure sensor 4, a second pressure sensor 41, a femoral stem 5, a data collector 6, a signal transmitting device 7, a contact lining 8 and a display device 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. 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 technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The embodiment of the utility model provides a trial mold device capable of monitoring the position relation of a femoral head and a acetabular cup and the risk of marginal impact, which comprises a femoral head trial mold 1, an acetabular cup 2, a processor 3 and a first pressure sensor 4, wherein the femoral head trial mold 1 is arranged in a spherical shape, the first pressure sensors 4 are provided with a plurality of pressure sensors, the first pressure sensors 4 are arranged on the femoral head trial mold 1 in a dot matrix manner, the acetabular cup 2 is sleeved on the femoral head trial mold 1, a notch is formed in the femoral head trial mold 1, a femoral stem 5 is arranged at the notch position of the femoral head trial mold 1, the size of pressure, the distribution shape of a contact surface and key parameters of a contact area between the femoral head trial mold 1 and the acetabular cup 2 can be simulated through the mutual matching of the femoral head trial mold 1 and the acetabular cup 2, the position of the trial mold 1 relative to the acetabular cup 2 is measured and calculated, and the pressure between the femoral head trial mold 1 and the acetabular cup 2 is obtained, The femoral head test mold comprises a femoral head test mold 1, a femoral head controller, a femoral head sensor controller, a femoral head controller and a signal transmitting device, wherein a femoral head handle 5 is arranged in the femoral head test mold 1, a data collector 6 and a signal transmitting device 7 are arranged in the femoral head test mold 2, a plurality of first pressure sensors 4 are communicated with the data collector 6, pressure information is transmitted to the data collector 6 through the first pressure sensors 4 for collection and output, a power supply assembly is embedded in the femoral head test mold 1 and provides electric energy for electronic elements in the femoral head test mold 1 through the power supply assembly, the signal transmitting device 7 is respectively communicated to the data collector 6 and a processor 3, and the pressure information is transmitted to the processor 3 through the signal transmitting device 7 through the data collector 6 for calculation and processing.
Preferably, a layer of contact lining 8 is arranged on the inner side wall of the acetabular cup 2, the contact lining 8 is arranged in a hemispherical shape, a circle of second pressure sensor 41 is arranged at the edge of the contact lining 8, and the second pressure sensor 41 is connected with a power supply assembly and a data collector 6 in the femoral head test mold 1 through transmission lines.
When femoral stem 5 and 8 marginal pressure data that produce when striking of contact inside lining, to contact inside lining 8, use 8 centers in contact inside lining as the original point, do cross axis and axis of ordinates, set up a 360 quadrant, when 5 necks in femoral stem and 8 marginal striking of contact inside lining, 8 marginal second pressure sensor 41 in contact inside lining were triggered this moment, cause femoral head examination mould 1 to take place the dislocation because of the striking simultaneously, the lattice pressure in cephalic joint contact area disappears, can judge according to this and strike dislocation risk.
The first pressure sensor 4 and the second pressure sensor 41 may be array type first pressure sensors developed by Tekscan corporation.
Preferably, the first pressure sensors 4 on the femoral head test mold 1 are arranged on one side close to the acetabular cup 2 in a hemispherical shape, the rest parts are not provided with the first pressure sensors 4, the first pressure sensors 4 on the femoral head test mold 1 are in a hemispherical shape, pressure data obtained by the first pressure sensors 4 are processed by a processor and displayed on a display as corresponding dot matrix pressure graphs (see dot-shaped shaded parts in fig. 5-7), an ab line is set as a diameter on the hemispherical section of the femoral head test mold 1, and the length of the ab line is the same as the diameter of the femoral head test mold 1 when the femoral head test mold 1 rotates relative to the acetabular cup 2; c. d, the projection of the intersection point of the perpendicular line of the ab line on the hemispherical section of the femoral head trial mold 1 and the edge of the hemispherical section on the plane of the mouth of the acetabular cup 2 is taken as two points, the cd line is perpendicular to the ab line, and when the femoral head trial mold 1 is perpendicular to the plane of the mouth of the acetabular cup 2, the length of the cd line is the same as that of the ab line; when the femoral head test mold 1 rotates relative to the acetabulum, the cd line can be gradually shortened along with the rotation, the rotation direction of the femoral head test mold 1 can be judged according to the direction of one side where the dot matrix pressure graph gradually disappears, and the rotation direction of the femoral head test mold 1 relative to the contact lining 8 is determined according to the position in the quadrant; the length of ab line is the diameter of femoral head examination mould 1, obtains the length of cd line through processor 3 to the calculation of dot matrix pressure figure simultaneously, can calculate the rotatory inclination angle of hemisphere cross-section through the computational formula: arcsincd/ab, determining the rotation angle of the femoral head test mold 1 relative to the contact liner 8; therefore, the rotating direction and the angle relation of the femoral head test model 1 relative to the contact lining 8 can be measured and calculated.
Preferably, the main body material of the femoral head trial model 1 is high cross-linked polyethylene or common polyethylene, the diameter of the spherical part of the femoral head trial model 1 can be 28mm, 32mm, 36mm and 40mm, and medical workers can use the femoral head trial models 1 with different sizes according to the physical conditions of users, so that the femoral head trial models 1 can be adapted to patients with different conditions.
Preferably, the signal transmitting device 7 is a wireless transmitter, the signal transmitting device 7 may be connected to the processor 3 by using a bluetooth module, and the signal transmitting device 7 in this patent may also be connected in a wired manner, preferably in a wireless connection.
Preferably, the medical treatment device further comprises a display device 9, the display device 9 is communicated with the processor 3, and data after the processor 3 finishes processing is displayed through the display device 9, so that the medical care personnel can conveniently conduct research.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a can monitor examination mould device of cephalic mortar position relation and marginal striking risk, includes first pressure sensor (4), its characterized in that: the femoral head test mould is characterized by further comprising a femoral head test mould (1), an acetabular cup (2) and a processor (3), wherein the femoral head test mould (1) is arranged in a spherical shape, the first pressure sensors (4) are arranged in a plurality of patterns, the first pressure sensors (4) are arranged on the femoral head test mould (1) in a dot matrix manner, the acetabular cup (2) is sleeved on the femoral head test mould (1), notches are formed in the femoral head test mould (1), femoral stems (5) are arranged at the positions of the notches of the femoral head test mould (1), a data collector (6), a signal transmitting device (7) and a power supply component are arranged in the femoral head test mould (1), the first pressure sensors (4) are communicated with the data collector (6) and the power supply component, and the signal transmitting device (7) is communicated with the data collector (6) and the processor (3) respectively.
2. The trial device as claimed in claim 1, wherein the trial device is adapted to monitor the relationship between the position of the cup and the risk of rim impact, and comprises: be equipped with one deck contact inside lining (8) on the inside wall of acetabular cup (2), contact inside lining (8) are the hemisphere type setting, just the marginal position department of contact inside lining (8) is equipped with round second pressure sensor (41), power supply unit spare and data collector (6) are connected in second pressure sensor (41).
3. A trial device for monitoring the positional relationship of a cup and the risk of edge impact according to claim 1 or 2, wherein: the first pressure sensor (4) on the femoral head test mold (1) is arranged on one side close to the acetabular cup (2) in a hemispherical shape.
4. A trial device for monitoring the positional relationship of a cup and the risk of edge impact according to claim 1 or 2, wherein: the femoral head test mold (1) is made of high cross-linked polyethylene or common polyethylene, and the diameter of the spherical part of the femoral head test mold (1) can be 28mm, 32mm, 36mm and 40 mm.
5. A trial device for monitoring the positional relationship of a cup and the risk of edge impact according to claim 1 or 2, wherein: the signal transmitting device (7) is a wireless transmitter.
6. The trial device as claimed in any one of claims 1 or 2, wherein the trial device is adapted to monitor the positional relationship of the cup and the risk of edge impingement, and further comprises: and the device also comprises a display device (9), wherein the display device (9) is communicated with the processor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121685409.3U CN215349765U (en) | 2021-07-23 | 2021-07-23 | Can monitor examination mould device of cephalic mortar position relation and marginal striking risk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121685409.3U CN215349765U (en) | 2021-07-23 | 2021-07-23 | Can monitor examination mould device of cephalic mortar position relation and marginal striking risk |
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| Publication Number | Publication Date |
|---|---|
| CN215349765U true CN215349765U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121685409.3U Active CN215349765U (en) | 2021-07-23 | 2021-07-23 | Can monitor examination mould device of cephalic mortar position relation and marginal striking risk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215349765U (en) |
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2021
- 2021-07-23 CN CN202121685409.3U patent/CN215349765U/en active Active
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