CN219700214U - Gap measurement and soft tissue balance pressure test equipment for knee joint replacement - Google Patents
Gap measurement and soft tissue balance pressure test equipment for knee joint replacement Download PDFInfo
- Publication number
- CN219700214U CN219700214U CN202320478618.3U CN202320478618U CN219700214U CN 219700214 U CN219700214 U CN 219700214U CN 202320478618 U CN202320478618 U CN 202320478618U CN 219700214 U CN219700214 U CN 219700214U
- Authority
- CN
- China
- Prior art keywords
- balloon
- groups
- soft tissue
- pressure test
- tissue balance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 27
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 title claims abstract description 19
- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000013150 knee replacement Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 210000005077 saccule Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 210000003127 knee Anatomy 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 206010057178 Osteoarthropathies Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000002303 tibia Anatomy 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 208000012659 Joint disease Diseases 0.000 description 1
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 210000001264 anterior cruciate ligament Anatomy 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 210000002967 posterior cruciate ligament Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model belongs to the technical field of surgical equipment, and particularly discloses gap measurement and soft tissue balance pressure test equipment for knee joint replacement, which comprises a bracket, two groups of balloons, two groups of conveying pipelines, two groups of pressure detection structures and a power structure, wherein the bracket adopts a T-shaped structure or a Y-shaped structure, and the two groups of balloons are respectively arranged on two sides of the horizontal side of the T-shaped structure or two branches of the Y-shaped structure; the two groups of balloons are respectively connected with the corresponding conveying pipelines; the power structure conveys the filling material into the balloon through the conveying pipeline; the pressure detection structure is arranged on the conveying pipeline and used for detecting the pressure in the conveying pipeline. The balloon is used for detecting pressure after being inflated, and compared with the prior art, the balloon is made of flexible materials, and rigid friction does not exist, so that damage to joint parts is avoided. The split type support structure is adopted, tightness of the inner side and the outer side of the joint can be measured simultaneously, and soft tissues can be adjusted correspondingly by comparing two groups of detection data.
Description
Technical Field
The utility model belongs to the technical field of surgical equipment, and particularly relates to gap measurement and soft tissue balance pressure test equipment for knee joint replacement.
Background
Knee joints are important weight-bearing joints of lower limbs, and their structure and function are the most complex of human joints. Knee degenerative osteoarthropathy is a common disease in elderly people, with 35% of symptomatic knee osteoarthropathy men reported to occur over 50 years of age, and up to 74% in women. Serious knee osteoarthritis is increasingly in patients who require artificial knee arthroplasty. Knee joint replacement can relieve knee joint pain, improve knee joint function, correct knee joint deformity and achieve long-term stability. Knee replacement is a relatively mature ultimate method for effectively treating knee joint diseases, and is divided into unicondylar replacement and total knee replacement. The unicondylar replacement is performed partially, mainly based on the medial condyle. The total knee replacement mainly comprises excision of diseased soft tissues, anterior and posterior cruciate ligaments, meniscus and the like, after correction and molding, the surface is replaced by metal, and the metal can be isolated by a liner through high-crosslinking polyethylene.
After knee joint replacement, the tightness (namely, gap pressure) of the inner joint and the outer joint needs to be judged, so that the tightness of the inner joint and the outer joint is ensured to be relatively consistent. The traditional mode of detecting tightness is realized based on personal experience of doctors, and most commonly, two fingers are inserted into the inner joint and the outer joint by the doctors to feel the tightness of the inner joint and the outer joint, which brings certain risk and instability factors to knee joint replacement operation, and once the knee joint replacement operation is improperly regulated, the postoperative rehabilitation of a patient is affected.
In order to solve the problems caused by the two-finger method, china patent publication No. CN115227464A discloses a pressure measuring device, a preparation method and pressure measuring equipment, a sensing unit is integrated on a matrix, when pressure applied by a femoral component is applied, an electric signal can be output by utilizing a piezoelectric effect, and the electric signal is converted into pressure information after being analyzed and processed by a signal processing device, so that a doctor can adjust the tightness degree of a knee joint ligament according to the acquired pressure information. However, in the above-mentioned scheme, the sensing unit includes a bottom electrode layer, a piezoelectric material layer and a top electrode layer, and the sensing unit is easy to perform rigid friction with a joint portion in the joint cavity in the sensing process, so that a problem that the joint portion may be damaged is solved.
Disclosure of Invention
The utility model aims to provide gap measurement and soft tissue balance pressure test equipment for knee joint replacement, which is used for solving the problem that the existing sensing unit is easy to carry out rigid friction with a joint part in a joint cavity in the sensing process, so that the joint part can be damaged to some extent.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the knee joint replacement gap measurement and soft tissue balance pressure test device comprises a bracket, a balloon, a conveying pipeline, a pressure detection structure and a power structure, wherein the balloon is arranged on the bracket, and the bracket is used for being placed in a joint; the conveying pipeline is connected with the balloon; the power structure conveys the filling material into the balloon through the conveying pipeline; the pressure detection structure is used for detecting the pressure of the balloon.
Further, two groups of the balloons are arranged on the bracket and correspond to the inner side and the outer side of the joint respectively; the two groups of the balloons are respectively connected with the corresponding conveying pipelines; the power structure can respectively convey filling materials into the two groups of conveying pipelines.
Further, the bracket adopts a T-shaped structure or a Y-shaped structure; the two groups of saccules are respectively arranged on two sides of the horizontal side of the T-shaped structure or on two branches of the Y-shaped structure.
Further, an elevation line is arranged between the upper side and the lower side of the balloon, and scales are printed on the elevation line.
Further, the starting point of the elevation line is located at the lower side of the balloon.
Further, the pressure detection structure is arranged on the conveying pipeline and is used for detecting the pressure in the conveying pipeline.
Further, the balloon is divided into a plurality of independent chambers, a plurality of conveying pipelines are respectively connected with the independent chambers, and the power structure can respectively convey filling materials into the conveying pipelines.
Further, the elevation lines are correspondingly arranged on the cavities.
The working principle of the technical scheme is as follows: after the joint plane is determined by the tibia, the scaffold is implanted into the joint such that the scaffold is located on the joint plane. The same amount of filling material (e.g., liquid, gas) is then injected into the two balloons through the delivery conduit via the powered structure, respectively, such that the balloons are inflated (the same amount of filling material is injected into the two chambers corresponding to the two balloons). After the conveying is finished, the power structure is closed, and then the joint is moved, so that the saccule is deformed. The tightness of the joints at the inner side and the outer side is judged by observing the pressure data detected by the pressure detection structure, and soft tissues at the two sides of the joints are loosened by combining the observation of scales on the elevation line.
The beneficial effects of this technical scheme lie in:
(1) the balloon is used for detecting pressure after being inflated, and compared with the prior art, the balloon is made of flexible materials, and rigid friction does not exist, so that damage to joint parts is avoided.
(2) The structure (T-shaped structure or Y-shaped structure) of the split type bracket is adopted, so that the tightness of the inner side and the outer side of the joint can be measured simultaneously, and soft tissues can be correspondingly regulated by comparing detection data.
(3) The elevation lines are arranged on the sacculus, and the differential expression of the pressure of each area is realized by observing the elevation lines of each cavity on the two sacculus, so that a reference can be provided for the loosening of soft tissues.
(4) Because the conveying channel is communicated with the saccule, the pressure between the conveying channel and the saccule is consistent, and the pressure detection structure is arranged on the conveying channel, so that the pressure detection structure is prevented from being contacted with the joint part to cause damage.
Drawings
Fig. 1 is a schematic structural view of a knee joint replacement gap measuring and soft tissue balance pressure testing apparatus according to the present utility model in which the stent has a T-shaped structure.
FIG. 2 is a schematic view of the structure of the knee replacement gap measuring and soft tissue balance pressure testing apparatus according to the present utility model in which the support has a Y-type structure;
FIG. 3 is a top view of the gap measurement for knee replacement of the present utility model in cross-section with the balloon of the soft tissue balance pressure test device;
fig. 4 is a plan view showing the groined separation of the balloon in the knee replacement gap measurement and soft tissue balance pressure test device of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: balloon 1, support 2, delivery conduit 3, pressure detection structure 4, elevation line 5, cavity 6.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment is basically as shown in the accompanying figures 1-4: the knee joint replacement gap measurement and soft tissue balance pressure test device comprises a support 2, two groups of balloons 1, two groups of conveying pipelines 3, two groups of pressure detection structures 4 and a power structure, wherein the support 2 adopts a T-shaped structure or a Y-shaped structure, the two groups of balloons 1 are respectively arranged on two sides of the horizontal side of the T-shaped structure or on two branches of the Y-shaped structure, and the support 2 is used for being placed in a joint; the two groups of balloons 1 are respectively connected with a corresponding conveying pipeline 3; the power structure conveys the filling material into the balloon 1 through the conveying pipeline 3; the pressure detection structure 4 is arranged on the conveying pipeline 3 and is used for detecting the pressure in the conveying pipeline 3, the pressure detection structure 4 adopts a pressure sensor, the pressure sensor is connected with an external display, and a doctor observes two groups of pressure detection values through observing the external display. The pressure detecting structure 4 may also be provided inside the balloon 1, with the transmission line of the pressure detecting structure 4 led to the outside through the transmission pipe 3. The structure (T-shaped structure or Y-shaped structure) of the split type bracket 2 is adopted, so that the tightness of the inner side and the outer side of the joint can be measured simultaneously, and soft tissues can be correspondingly regulated by comparing two groups of detection data.
An elevation line 5 is arranged between the upper side and the lower side of the balloon 1, scales are printed on the elevation line 5, and the starting point of the elevation line 5 is positioned on the lower side of the balloon 1. By observing the elevation lines 5 on the two balloons 1, a reference can be provided for soft tissue loosening, after the balloons 1 are inflated, joints are pressed on the upper surfaces of the balloons 1, the balloons 1 can be deformed by pressing, and the height is reduced to a certain extent. Specifically, the upper and lower sides of the balloon 1 can adopt non-telescopic layers, the upper side of the elevation line 5 is fixed on the upper side of the balloon 1, the lower side of the balloon 1 is provided with a limit ring, and the elevation line 5 can pass through the limit ring. The elevation line 5 is arranged on the side facing the doctor, so that the doctor can observe conveniently.
In another embodiment, the balloon 1 is divided into a plurality of independent chambers 6, specifically, a cross (as shown in fig. 3) or a cross (as shown in fig. 4) separation can be adopted, the balloon is divided into four or nine independent chambers, a plurality of conveying pipelines 3 are respectively connected with each independent chamber 6, and the power structure can respectively convey filling materials into each conveying pipeline 3. And each chamber 6 is provided with a corresponding elevation line 5, so that differential expression of pressure in each region is realized.
The power structure can adopt a micro pump, the micro pump is provided with the same number of outlets as the delivery pipeline 3, and the outlets can respectively deliver the filling substances into the balloon 1; the same number of micropumps as the delivery pipes 3 may be provided, respectively.
The specific implementation process is as follows:
after the joint plane is determined by the tibia, the stent 2 is implanted into the joint such that the stent 2 lies on the joint plane. The same amount of filling material (e.g. liquid, gas) is then injected into the two balloons 1 through the delivery conduit 3 by the dynamic structure, respectively, so that the balloons 1 are inflated (the same amount of filling material is injected into the two chambers 6 corresponding to the two balloons 1). After the conveying is finished, the power structure is closed, and then the joint is moved, so that the balloon 1 is deformed. The tightness of the inner and outer joints is determined by observing the pressure data detected by the pressure detecting structure 4, and soft tissues on both sides of the joints are loosened by observing the scale on the elevation line 5.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. The knee joint replacement is with clearance measurement and soft tissue balance pressure test equipment, its characterized in that: the device comprises a bracket (2), a balloon (1), a conveying pipeline (3), a pressure detection structure (4) and a power structure, wherein the balloon (1) is arranged on the bracket (2), and the bracket (2) is used for being placed in a joint; the conveying pipeline (3) is connected with the balloon (1); the power structure conveys the filling material into the balloon (1) through the conveying pipeline (3); the pressure detection structure (4) is used for the pressure of the balloon (1).
2. The knee replacement gap measurement and soft tissue balance pressure test apparatus according to claim 1, wherein: two groups of balloons (1) are arranged on the bracket (2), and the two groups of balloons (1) respectively correspond to the inner side and the outer side of the joint; the two groups of the balloons (1) are respectively connected with the corresponding conveying pipelines (3); the power structure can respectively convey filling substances into the two groups of conveying pipelines (3).
3. The knee replacement gap measurement and soft tissue balance pressure test apparatus according to claim 2, wherein: the bracket (2) adopts a T-shaped structure or a Y-shaped structure; the two groups of sacculus (1) are respectively arranged on two sides of the horizontal side of the T-shaped structure or on two branches of the Y-shaped structure.
4. The knee replacement gap measurement and soft tissue balance pressure test apparatus according to claim 1, wherein: an elevation line (5) is arranged between the upper side and the lower side of the balloon (1), and scales are printed on the elevation line (5).
5. The knee replacement gap measurement and soft tissue balance pressure test apparatus of claim 4, wherein: the starting point of the elevation line (5) is positioned at the lower side of the balloon (1).
6. The knee replacement gap measurement and soft tissue balance pressure test apparatus according to claim 1, wherein: the pressure detection structure (4) is arranged on the conveying pipeline (3) and is used for detecting the pressure in the conveying pipeline (3).
7. The knee replacement gap measurement and soft tissue balance pressure test apparatus of claim 5, wherein: the balloon (1) is divided into a plurality of independent chambers (6), a plurality of conveying pipelines (3) are respectively connected with the independent chambers (6), and the power structure can respectively convey filling materials into the conveying pipelines (3).
8. The knee replacement gap measurement and soft tissue balance pressure test apparatus of claim 7, wherein: the elevation lines (5) are correspondingly arranged on the cavities (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320478618.3U CN219700214U (en) | 2023-03-14 | 2023-03-14 | Gap measurement and soft tissue balance pressure test equipment for knee joint replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320478618.3U CN219700214U (en) | 2023-03-14 | 2023-03-14 | Gap measurement and soft tissue balance pressure test equipment for knee joint replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219700214U true CN219700214U (en) | 2023-09-19 |
Family
ID=87978638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320478618.3U Active CN219700214U (en) | 2023-03-14 | 2023-03-14 | Gap measurement and soft tissue balance pressure test equipment for knee joint replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219700214U (en) |
-
2023
- 2023-03-14 CN CN202320478618.3U patent/CN219700214U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dumbleton et al. | Dynamic interface pressure distributions of two transtibial prosthetic socket concepts. | |
| Ledoux et al. | The distributed plantar vertical force of neutrally aligned and pes planus feet | |
| Kahle et al. | Transfemoral sockets with vacuum-assisted suspension comparison of hip kinematics, socket position, contact pressure, and preference: ischial containment versus brimless | |
| Sanders et al. | Effects of elevated vacuum on in-socket residual limb fluid volume: Case study results using bioimpedance analysis | |
| US9044159B2 (en) | Measurement and use of in-socket residual limb volume change data for prosthetic fitting | |
| Frossard et al. | Load-relief of walking aids on osseointegrated fixation: instrument for evidence-based practice | |
| Lattanza et al. | Closed versus open kinematic chain measurements of subtalar joint eversion: implications for clinical practice | |
| Krouskop et al. | Computer-aided design of a prosthetic socket for an above-knee amputee | |
| Hua et al. | Relative motion of hip stems under load. An in vitro study of symmetrical, asymmetrical, and custom asymmetrical designs. | |
| Selles et al. | A randomized controlled trial comparing functional outcome and cost efficiency of a total surface-bearing socket versus a conventional patellar tendon-bearing socket in transtibial amputees | |
| Seelen et al. | Effects of prosthesis alignment on pressure distribution at the stump/socket interface in transtibial amputees during unsupported stance and gait | |
| Portnoy et al. | Real-time subject-specific analyses of dynamic internal tissue loads in the residual limb of transtibial amputees | |
| Carrigan et al. | Pneumatic actuator inserts for interface pressure mapping and fit improvement in lower extremity prosthetics | |
| McLean et al. | Socket size adjustments in people with transtibial amputation: effects on residual limb fluid volume and limb-socket distance | |
| Dillon et al. | Effect of prosthetic design on center of pressure excursion in partial foot prostheses. | |
| Tang et al. | A combined kinematic and kinetic analysis at the residuum/socket interface of a knee-disarticulation amputee | |
| CN107802382A (en) | Knee joint balance master system and its balance method of discrimination in total knee arthroplasty | |
| Chatterjee et al. | Problems with use of trans-tibial prosthesis | |
| CN219700214U (en) | Gap measurement and soft tissue balance pressure test equipment for knee joint replacement | |
| Sanders et al. | Assessment of residual-limb volume change using bioimpedence | |
| CN215584483U (en) | Adjustable knee joint pressure measuring device for total knee joint replacement | |
| Youngblood et al. | Mechanically and physiologically optimizing prosthetic elevated vacuum systems in people with transtibial amputation: a pilot study | |
| Goh et al. | Static and dynamic pressure profiles of a patellar-tendon-bearing (PTB) socket | |
| Youngblood et al. | Modeling the mechanics of elevated vacuum systems in prosthetic sockets | |
| Ballesteros et al. | Cyclic socket enlargement and reduction during walking to minimize limb fluid volume loss in transtibial prosthesis users |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |