CN202179609U - Device for measuring length of limb and offset distance of neck in total hip replacement - Google Patents
Device for measuring length of limb and offset distance of neck in total hip replacement Download PDFInfo
- Publication number
- CN202179609U CN202179609U CN 201120117049 CN201120117049U CN202179609U CN 202179609 U CN202179609 U CN 202179609U CN 201120117049 CN201120117049 CN 201120117049 CN 201120117049 U CN201120117049 U CN 201120117049U CN 202179609 U CN202179609 U CN 202179609U
- Authority
- CN
- China
- Prior art keywords
- scale
- offset distance
- neck
- length
- connecting rod
- 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.)
- Expired - Fee Related
Links
- 238000011541 total hip replacement Methods 0.000 title abstract description 4
- 210000003414 extremity Anatomy 0.000 abstract description 21
- 210000004394 hip joint Anatomy 0.000 abstract description 9
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract 1
- 238000002513 implantation Methods 0.000 abstract 1
- 230000000399 orthopedic effect Effects 0.000 abstract 1
- 210000001624 hip Anatomy 0.000 description 10
- 210000000527 greater trochanter Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 210000000689 upper leg Anatomy 0.000 description 5
- 238000011882 arthroplasty Methods 0.000 description 3
- 210000002414 leg Anatomy 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000001694 thigh bone Anatomy 0.000 description 2
- 210000003692 ilium Anatomy 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
Images
Classifications
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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 for implanting artificial joints
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model provides a device for measuring the length of a limb and the offset distance of a neck in a total hip replacement, belonging to the technical field of an orthopedic surgery apparatus in the clinical medicine. A staff gauge in the device is provided with a plurality of degree scales, the degree scales are divided into a plurality of thick degree scales, thin degree scales and minimum degree scales, each thick degree scale is centimeter, each thin degree scale is 5mm, each minimum degree scale is 1mm, the total length of the staff gauge is 140mm, one end of a connecting rod is connected with the midpoint of the longitudinal axis of the staff gauge, the other end of the connecting rod is connected with a fixing clamp, and a plane formed by the longitudinal axis of the fixing clamp and the connecting rod is perpendicular to the longitudinal axis of the staff gauge. The device is simple in structure, convenient to operate, and reliable to measure, and the device can be used for exactly controlling the length of the operation-side limb and the neck offset distance of the hip joint in the total hip replacement in cooperation with the existing hip joint implantation device.
Description
Technical field
This utility model belongs to clinical medical Orthopeadic Surgery technique with the apparatus field, is specifically related to limbs length and head and neck offset distance measuring device in the replacement of total hip.
Background technology
Leg length discrepancy is to cause the patient to the unsatisfied primary factor of surgical effect in the artificial total hip arthroplasty.Because anatomic landmark is difficult to the influence of factors such as touching after receiving lateral position pelvic inclination and shop aseptic operation list, can't directly measure the length of limbs.Therefore the method for some indirect control limbs length is arisen at the historic moment.Comprising following closely osseous pin, lay frame of reference in corresponding ilium side; High point is demarcated reference point in the outside of greater trochanter simultaneously; Limbs length is controlled in the position of contrast reference point before and after prosthese is laid, and this measurement system is positioned at outside the femur, crosses over hip joint; Therefore this method can receive hip joint and bends and stretches, takes down the exhibits and the influence of inside and outside swing angle degree, promptly can't guarantee twice measurement it is under same hip joint position, to carry out.Therefore it is undesirable with repeatability to measure accuracy.The high point of femoral greater trochanter is a reliable anatomic landmark of judging hip joint center of rotation and limbs length, but because no reliable survey tool is only very big with the naked eyes error in judgement.Other with mobility after resetting through the perception hip joint and hip joint surrounding soft tissue tension force come the method for indirect judgement limbs length and head and neck offset distance more be difficult to accomplish quantize with accurately.Therefore at present still do not measure the effective tool and the method for limbs length and head and neck offset distance in the replacement of total hip.
Summary of the invention
This utility model is inserted handle by existing femoral prosthesis,, combines to plan before the art as witness mark with the high point of greater trochanter, can accurately control limbs length and head and neck offset distance behind the replacement.
This utility model is made up of fixation clamp 1, connecting rod 2 and scale 3, and scale 3 is provided with scale; One end of connecting rod 2 is connected with the longitudinal axis mid point of scale 3, and the other end of connecting rod 2 is connected with fixation clamp 1, and fixation clamp 1 longitudinal axis is vertical with the longitudinal axis of scale 3 with the plane that connecting rod 2 is constituted.
Scale on the scale 3 is divided into coarse scale, thin scale and minimum scale, and wherein coarse scale be centimetre, and carefully scale is 5mm, and minimum scale is 1mm, and scale 3 total lengths are 140mm.
This utility model solves the technical scheme that its technical problem adopted: this survey tool comprises fixation clamp 1, connecting rod 2 and 3 three parts of scale.In present total hip replacement operating theater instruments, a handle of inserting femoral prosthesis is all arranged, the tip of this handle can be inserted in the hole of prosthese shoulder, when squeezing into femoral stem, with handle is fixing femoral stem is squeezed into pulp cavity.After handle and femoral stem were fixing, the major axis of handle was consistent with the major axis of femoral stem.And the major axis of prosthese is consistent with the femur major axis or convergence consistent.With fixation clamp of this utility model 1 and handle fixing after, scale 3 is just vertical with the prosthese fixed handle, also just with the femur axis.The level altitude of adjustment fixation clamp 1 makes the height of scale 3 consistent with the height point of greater trochanter.So just can (1) judge limbs length, and then adjust limbs length through the depth of drive and the femoral head neck length of adjustment prosthese through the center of examination head and the relative position of scale 3; (2) can confirm the center of rotation of examination head and the vertical dimension of handle through the reading on the scale 3 simultaneously; The vertical dimension of femoral stem shoulder fixing hole on femoral head center of rotation that the preceding plan of contrast art is upward measured and the template is through the offset distance and the next head and neck offset distance of accurately controlling femur of femoral head neck length of adjustment femoral stem.
Simple in structure, the convenient and reliable operation of this utility model is inserted apparatus in conjunction with existing hip joint, can accurately control the length of operation side limbs in the replacement of total hip and the head and neck offset distance of hip joint.
Description of drawings
Fig. 1 is the front view of limbs length and head and neck offset distance measuring device in the replacement of total hip
Fig. 2 is the left view of limbs length and head and neck offset distance measuring device in the replacement of total hip
Fig. 3 is the vertical view of limbs length and head and neck offset distance measuring device in the replacement of total hip
Wherein: 1. fixation clamp 2. connecting rods 3. scales
The specific embodiment
Scale on the scale 3 is divided into coarse scale, thin scale and minimum scale, and wherein coarse scale be centimetre, and carefully scale is 5mm, and minimum scale is 1mm, and scale 3 total lengths are 140mm.
Each assembly constitutes by on-deformable hard material.
In artificial total hip arthroplasty; Using handle squeezes into femoral prosthesis to the position near appropriate depth; Fixation clamp in this utility model 1 and handle are fixed; The height of adjustment fixation clamp 1 makes scale 3 be in the near-end level of femoral prosthesis neck, and continued is slowly squeezed into femoral prosthesis and flushed (before specifically with reference to art the relative position put of femoral head center of rotation and greater trochanter height) in the works until the high point of scale 3 and femoral greater trochanter.Then can judge limbs length, and then adjust limbs length through adjustment artificial thigh bone neck length through the center of examination head and the relative position of scale 3; Can confirm the center of rotation of examination head and the vertical dimension of handle through the reading on the scale 3 simultaneously; The vertical dimension of femoral stem shoulder fixing hole on femoral head center of rotation that the preceding plan of contrast art is upward measured and the template is through the next head and neck offset distance of accurately controlling femur of adjustment artificial thigh bone neck length.The adjustment of limbs length and head and neck offset distance is to take into account mutually, common completion.Like this, just can reach the purpose of accurate control limbs length and head and neck offset distance through this easy, reliable instrument.Effectively avoided leg length discrepancy---the generation of most common complication in this artificial total hip arthroplasty.
Claims (2)
1. limbs length and head and neck offset distance measuring device in the replacement of total hip is characterized in that being made up of fixation clamp (1), connecting rod (2) and scale (3), and scale (3) is provided with scale; One end of connecting rod (2) is connected with the longitudinal axis mid point of scale (3), and the other end of connecting rod (2) is connected with fixation clamp (1), and fixation clamp (1) longitudinal axis is vertical with the longitudinal axis of scale (3) with the plane that connecting rod (2) is constituted.
2. by limbs length and head and neck offset distance measuring device in the described replacement of total hip of claim 1; It is characterized in that the scale on the said scale (3) is divided into coarse scale, thin scale and minimum scale; Wherein coarse scale is centimetre; Thin scale is 5mm, and minimum scale is 1mm, and scale (3) total length is 140mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120117049 CN202179609U (en) | 2011-04-20 | 2011-04-20 | Device for measuring length of limb and offset distance of neck in total hip replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120117049 CN202179609U (en) | 2011-04-20 | 2011-04-20 | Device for measuring length of limb and offset distance of neck in total hip replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202179609U true CN202179609U (en) | 2012-04-04 |
Family
ID=45887272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120117049 Expired - Fee Related CN202179609U (en) | 2011-04-20 | 2011-04-20 | Device for measuring length of limb and offset distance of neck in total hip replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202179609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981866A (en) * | 2018-01-10 | 2018-05-04 | 中山大学附属第医院 | Measuring device for hip joint replacement |
-
2011
- 2011-04-20 CN CN 201120117049 patent/CN202179609U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981866A (en) * | 2018-01-10 | 2018-05-04 | 中山大学附属第医院 | Measuring device for hip joint replacement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20150420 |
|
| EXPY | Termination of patent right or utility model |