CN113069250A - Femoral neck rotation center positioning device - Google Patents
Femoral neck rotation center positioning device Download PDFInfo
- Publication number
- CN113069250A CN113069250A CN202110203325.XA CN202110203325A CN113069250A CN 113069250 A CN113069250 A CN 113069250A CN 202110203325 A CN202110203325 A CN 202110203325A CN 113069250 A CN113069250 A CN 113069250A
- Authority
- CN
- China
- Prior art keywords
- clamping
- sleeve
- femoral neck
- arm
- mounting
- 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.)
- Pending
Links
Images
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
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1742—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip
- A61B17/175—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip for preparing the femur for hip prosthesis insertion
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4687—Mechanical guides for implantation instruments
Abstract
The application relates to the field of orthopedic surgical tools, in particular to a femoral neck rotation center positioning device which comprises a clamping mechanism clamped on a femoral neck and a positioning mechanism arranged on a clamping assembly; the clamping mechanism comprises a connecting piece and two clamping arms arranged on the connecting piece, the two clamping arms comprise a connecting part connected to the connecting piece and clamping parts fixedly connected to the connecting part, and the two clamping parts are clamped on the femoral neck in a matching manner; the positioning mechanism comprises mounting arms arranged on the connecting piece, sleeves are arranged at the end parts, far away from the connecting piece, of the mounting arms, the length directions of the sleeves are perpendicular to the planes of the two clamping arms, and the axes of the sleeves penetrate through the centers of the two clamping parts. The application has the effect of determining the rotation center of the femoral neck more accurately.
Description
Technical Field
The application relates to the field of orthopedic surgical tools, in particular to a femoral neck rotation center positioning device.
Background
In the surface hip replacement surgery, an acetabulum outer cup prosthesis and a femoral head prosthesis need to be implanted, when the femoral head prosthesis is implanted, the center of the femoral head needs to be positioned, and holes are drilled after positioning to form holes for inserting the femoral head prosthesis.
At present, when the rotation center of the femoral neck is positioned, the rotation center of the femoral head is generally determined, and the rotation center of the femoral neck is determined on the basis of the determination, but the actual rotation center of the femoral head is different from the rotation center of the femoral neck, so that the determined rotation center of the femoral neck has a certain deviation with the actual rotation center of the femoral neck, and the problem of inaccurate positioning exists.
Disclosure of Invention
In order to promote the accuracy to the location of femoral neck rotation center, this application provides a femoral neck rotation center positioner.
The application provides a thighbone neck rotation center positioner adopts following technical scheme:
a femoral neck rotation center positioning device comprises a clamping mechanism clamped on a femoral neck and a positioning mechanism arranged on the clamping mechanism; the clamping mechanism comprises a connecting piece and two clamping arms arranged on the connecting piece, the two clamping arms comprise a connecting part connected to the connecting piece and clamping parts fixedly connected to the connecting part, and the two clamping parts are clamped on the femoral neck in a matching manner; the positioning mechanism comprises mounting arms arranged on the connecting piece, sleeves are arranged at the end parts, far away from the connecting piece, of the mounting arms, the length directions of the sleeves are perpendicular to the planes of the two clamping arms, and the axes of the sleeves penetrate through the centers of the two clamping parts.
Through adopting above-mentioned technical scheme, when confirming the rotation center of femoral neck, with the centre gripping arm centre gripping on femoral neck, the installation arm is installed on the linking arm, and telescopic axis passes femoral neck's rotation center, directly confirms femoral neck's rotation center, reduces the phenomenon that has the deviation when confirming femoral neck's rotation center, and it is comparatively convenient to operate, has promoted the precision confirmed femoral neck's rotation center.
Optionally, the connecting piece comprises two connecting arms, and ends of the two connecting arms, which are far away from the clamping arm, are hinged to each other; the end portion of the mounting arm connected to the connecting piece is fixedly connected with a mounting sleeve, the mounting sleeve is of a U-shaped structure with an opening facing the connecting arms, and the mounting sleeve is buckled on the two connecting arms.
Through adopting above-mentioned technical scheme, when with fixture centre gripping on the thighbone neck, directly rotate two linking arms can, the operation of installation is comparatively convenient, later with the installation cover lock on the linking arm, can be comparatively convenient fix two linking arms, it is comparatively convenient to operate.
Optionally, one end of the connecting arm facing the clamping arm is fixedly connected with a limiting block, and the connecting part is connected to the corresponding limiting block; the limiting block is provided with a limiting part used for limiting the position of the mounting sleeve, and the mounting sleeve is connected with the connecting arm and the limiting block in a sliding mode.
Through adopting above-mentioned technical scheme, when will install the arm and install on the linking arm, will install the cover lock back on the linking arm, will slide the installation cover and make installation cover lock on the stopper, and install cover and spacing portion butt, it is comparatively convenient to confirm the position of installing the cover, promotes the convenience of using.
Optionally, the lower side opening of the installation sleeve is retracted towards the inside, the two limiting blocks are attached to the inner side surface of the installation sleeve, and the width of the lower side opening of the installation sleeve is larger than the distance between the opposite side surfaces of the two connecting arms.
Through adopting above-mentioned technical scheme, promote the steadiness of installation cover lock on the stopper, and the process of dismantling is ann to the installation cover comparatively convenient.
Optionally, the connecting portion is fixedly connected with an inserting portion, and the limiting block is provided with an inserting groove for inserting the inserting portion.
Through adopting above-mentioned technical scheme, the centre gripping arm can be dismantled with the stopper and be connected, and is different at the diameter of thighbone neck, can be comparatively convenient change the centre gripping arm, make it with the thighbone neck adaptation of different diameters, promote this positioner's suitability.
Optionally, a guide cylinder is arranged at the end of the mounting arm, the sleeve is connected with the guide cylinder in a sliding manner, and the sliding direction of the sleeve is the same as the length direction of the sleeve.
Through adopting above-mentioned technical scheme, with fixture centre gripping back on the femoral neck, insert the guide cylinder with the sleeve, will install the arm and install the in-process on the linking arm, reduce and receive telescopic interference, promote the convenience of using.
Optionally, the end surface of the sleeve facing the clamping arm is provided with a plurality of positioning prongs for insertion into the femoral head.
Through adopting above-mentioned technical scheme, insert the femoral head with the location tip, follow-up inserting the guide pin in the sleeve, use the in-process that the guide pin punched, reduce the phenomenon that appears rocking, squinting, promote the sleeve to the stability of the rotation center location of femoral neck.
Optionally, one end of the sleeve, which is far away from the clamping arm, is provided with a stress ring, and the size of an outer ring of the cross section of the stress ring is larger than that of the outer ring of the cross section of the sleeve.
Through adopting above-mentioned technical scheme, when inserting the location tip to the femoral head, it is more convenient to sleeve memorability application of force, and when follow-up use guide pin drills, need use the smooth hammer, through the atress ring that sets up, can more conveniently install the atress of being convenient for to the smooth hammer.
Optionally, the connecting piece includes a mounting column and two connecting arms, the mounting arm is connected to the mounting column, the two connecting arms are both hinged to the mounting column, and the two clamping arms are respectively connected to the two connecting arms; the two connecting arms are provided with positioning pieces for fixing the two connecting arms.
Through adopting above-mentioned technical scheme, under the diameter of thighbone neck had the certain deviation, the angle that opens and shuts of linking arm changed, can not exert an influence to the position of installation arm, reduces the phenomenon of deviation to the rotation center of thighbone neck is confirmed, promotes to carry out the accuracy of confirming to the rotation center of thighbone neck.
Optionally, the positioning element comprises a positioning plate and two clamping blocks, the two clamping blocks are respectively fixed on the two connecting arms, and the two clamping blocks are located on the side surfaces of the two connecting arms away from each other; the locating plate is a U-shaped structure, and equal rigid coupling has the joint edge on the medial surface of locating plate opening part both sides, sets up the joint groove that supplies the joint to follow the embedding on the joint piece.
Through adopting above-mentioned technical scheme, it is comparatively convenient to use the locating plate to fix the operation to two linking arms.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the rotation center of the femoral neck is determined, the clamping mechanism is clamped on the femoral neck, the axis of the sleeve penetrates through the center of the clamping part, namely the rotation center of the femoral neck can be determined, the operation of determining the rotation center of the femoral neck is convenient, the determination of the rotation center of the femoral neck is accurate, and the problem of deviation is not easy to occur;
2. through the guide cylinder and the sleeve, after the clamping mechanism is clamped on the femoral neck, the positioning tip is inserted into the femoral head through the sliding sleeve, when the guide pin is subsequently used for drilling, the problems of over-shaking and deflection of the sleeve are reduced, the stability of the subsequent drilling process is improved, the force can be more conveniently applied to the sleeve through the stress ring arranged on the sleeve, and when the slide hammer is subsequently used for operating the guide pin, the slide hammer is more conveniently installed and positioned;
3. by arranging the connecting part to be inserted into the inserting groove, when the rotating centers of the thighbone necks with different diameters are determined, the clamping arm can be conveniently replaced to be matched with the thighbone necks with different diameters, and the applicability of the device is improved;
4. through the erection column that sets up, with the installation arm setting on the erection column, the diameter deviation of thighbone neck can not exert an influence to the position of installation arm, reduces the definite deviation that takes place of the rotation center to the thighbone neck, promotes the accuracy of confirming thighbone neck rotation center.
Drawings
Fig. 1 is a schematic view of a positioning device of embodiment 1 of the present application;
fig. 2 is a schematic view for showing a connecting structure of the mounting sleeve and the stopper in embodiment 1;
FIG. 3 is an enlarged schematic view of portion A of FIG. 1;
fig. 4 is a schematic view for showing a connecting structure of the holding arm and the stopper in embodiment 2;
FIG. 5 is a schematic view of the structure of a positioning apparatus in embodiment 3;
fig. 6 is an enlarged schematic view of a portion B in fig. 5.
Description of reference numerals: 1. a clamping mechanism; 11. a connecting member; 111. a connecting arm; 112. a limiting block; 1121. a limiting part; 1122. inserting grooves; 113. mounting a column; 12. a clamp arm; 121. a connecting portion; 1211. a plug-in part; 122. a clamping portion; 2. a positioning mechanism; 21. mounting an arm; 22. a sleeve; 221. positioning a pointed end; 222. a stress ring; 23. guiding a needle; 24. installing a sleeve; 25. a guide cylinder; 3. a positioning member; 31. positioning a plate; 311. clamping edges; 32. a clamping block; 321. a clamping groove; 322. an abutment portion.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
Example 1
The embodiment of the application discloses a femoral neck rotation center positioning device. Referring to fig. 1, the positioning device comprises a clamping mechanism 1 for clamping on the femoral neck and a positioning mechanism 2 arranged on the clamping mechanism 1 for determining the rotation center of the femoral neck; the clamping mechanism 1 comprises a connecting piece 11 and a clamping arm 12 arranged on the connecting piece 11, the connecting piece 11 comprises two connecting arms 111 which are hinged with each other, the number of the clamping arms 12 is two, the clamping arm 12 comprises a connecting part 121 connected to the connecting arm 111 and a clamping part 122 arranged on the connecting part 121, the clamping part 122 and the connecting part 121 are integrally formed, and the two clamping parts 122 are clamped on the femoral neck; the positioning mechanism 2 comprises a mounting arm 21 arranged on the connecting arm 111, a sleeve 22 is arranged at one end of the mounting part far away from the connecting arm 111, wherein the length direction of the sleeve 22 is perpendicular to the plane of the two clamping arms 12, and in the state that the two clamping parts 122 are clamped on the femoral neck, the axis of the sleeve 22 passes through the centers of the two clamping parts 122, namely the axis of the sleeve 22 passes through the rotation center of the femoral neck, a guide pin 23 is connected in the sleeve 22 in a sliding manner, and the guide pin 23 is positioned on the rotation center axis of the femoral neck.
Referring to fig. 1 and 2, the mounting sleeve 24 is fixedly connected to one end of the mounting arm 21 connected to the connecting arm 111, the mounting sleeve 24 is of a U-shaped structure, the opening of the mounting sleeve faces the connecting arm 111, and after the two connecting arms 111 rotate to enable the clamping portion 122 to be clamped on the femoral neck, the mounting sleeve 24 is buckled on the two connecting arms 111, so that the two connecting arms 111 can be conveniently positioned, and the clamping portion 122 can be kept clamped on the femoral neck.
In order to determine the position of the mounting sleeve 24 on the connecting arm 111, referring to fig. 1 and 2, a limiting block 112 is fixedly connected to the end of the connecting arm 111 facing the clamping arm 12, the cross-sectional dimension of the limiting block 112 is larger than that of the connecting arm 111, and the connecting portion 121 is fixedly connected to the limiting block 112; a limiting part 1121 is fixedly connected to one end of the limiting block 112 away from the connecting arm 111, and the limiting part 1121 and the limiting block 112 are integrally formed; the opening of the mounting sleeve 24 is retracted inwards, the side surface opposite to the opening in the mounting sleeve 24 is a plane, the two limiting blocks 112 are embedded in the mounting sleeve 24, and the limiting blocks 112 are attached to the inner side surface of the mounting sleeve 24; in addition, in a state where the holding portion 122 is held on the femoral neck, the distance between the facing side surfaces of the two connecting arms 111 is smaller than the width of the opening of the attachment sleeve 24.
When the device is used, the two connecting arms 111 are rotated to enable the clamping portion 122 to be clamped on the femoral neck, the mounting sleeve 24 is buckled on the two connecting arms 111, the mounting arm 21 and the mounting sleeve 24 are located on one side, away from the clamping arm 12, of the limiting block 112, the mounting arm 21 slides towards the limiting block 112, the mounting sleeve 24 is buckled on the two limiting blocks 112, the mounting sleeve 24 is abutted against the limiting portion 1121, the axis of the sleeve 22 penetrates through the rotation center of the femoral neck, the position of the mounting arm 21 can be conveniently determined, the guide pin 23 can be used for punching subsequently, the rotation center of the femoral neck is determined conveniently, the rotation center of the femoral neck is directly determined, and the phenomenon of deviation is reduced; the positions of the mounting arm 21 and the sleeve 22 are determined through the mounting sleeve 24 and the limiting block 112, the operation is convenient, the mounting arm 21 is connected to the limiting block 112 stably, and the problems of deflection and the like are not easy to occur.
Referring to fig. 1 and 3, a guide cylinder 25 is fixedly connected to one end of the mounting arm 21 where the sleeve 22 is located, the sleeve 22 is slidably connected to the guide cylinder 25, and the sliding direction of the sleeve 22 is the same as the axial direction of the sleeve 22; the end part of the sleeve 22 facing the clamping arm 12 is fixedly connected with a plurality of positioning cusps 221, the positioning cusps 221 are uniformly distributed at intervals, and the positioning cusps 221 and the sleeve 22 are integrally formed; the end of the sleeve 22 far away from the positioning tip 221 is fixedly connected with a force bearing ring 222, and the outer ring size of the cross section of the force bearing ring 222 is larger than that of the cross section of the sleeve 22.
After the position of the installation arm 21 is fixed, the sleeve 22 is inserted into the guide cylinder 25, the sleeve 22 is slid to enable the positioning pointed head 221 to be inserted into the femoral head, the guide pin 23 is subsequently inserted into the sleeve 22, the femoral head is drilled, the stability of the sleeve 22 can be improved by inserting the positioning pointed head 221 into the femoral head, the problem that the guide pin 23 deflects when the guide pin 23 is used for drilling operation is reduced, and errors are reduced; through the stress ring 222, when the control positioning pointed end 221 is inserted into the femoral head, stress is more conveniently performed, and when the guide pin 23 is subsequently used for drilling, a sliding hammer needs to be used for applying force to the guide pin 23, and the stress ring 222 can be used as a stress point of the sliding hammer connected to the sleeve 22, so that convenience in subsequent operation is improved.
The implementation principle of the femoral neck rotation center positioning device in the embodiment of the application is as follows: when the rotation center of the femoral neck needs to be positioned, the two connecting arms 111 are rotated to enable the two clamping parts 122 to be clamped on the femoral neck, at the moment, the mounting sleeve 24 is buckled on the two mounting arms 21, the mounting sleeves 24 are buckled on the two limiting blocks 112 by sliding the mounting arms 21 and abut against the limiting parts 1121, so that the connecting arms 111 are fixed, meanwhile, the sleeve 22 is positioned, the rotation center of the femoral neck is directly determined, the phenomenon of deviation is reduced, and the accuracy of determining the rotation center of the femoral neck is improved; the sleeve 22 is subsequently slid to enable the positioning pointed end 221 to be inserted into the femoral head, the guide pin 23 is inserted into the sleeve 22, and drilling is performed, so that the sleeve 22 is stably fixed in the operation process, the deflection phenomenon is reduced, and the accuracy of the operation process is improved.
Example 2
The present embodiment is different from embodiment 1 in that: referring to fig. 4, the connecting portion 121 is detachably connected to the stopper 112, an insertion portion 1211 is fixedly connected to an end surface of the connecting portion 121 facing the stopper 112, an insertion groove 1122 into which the insertion portion 1211 is inserted is formed in the stopper 112, a cross section of the insertion groove 1122 is rectangular, and a cross-sectional shape of the insertion portion 1211 is matched with a cross-sectional shape of the insertion groove 1122.
Under the circumstances of difference, there is certain difference in the size of femoral neck, the centre gripping arm 12 can be applicable to the femoral neck of diameter variation range within 0.1mm, when the change amount that needs femoral neck diameter surpassed this scope, the centre gripping arm 12 of different specifications need to be changed, with femoral neck adaptation, peg graft with stopper 112 through setting up 1211 portion of grafting portion, can be comparatively convenient change the centre gripping arm 12, promote this femoral neck rotation center positioner's suitability, and when lieing in the femoral neck adaptation of different diameters, the convenience of operation is changed to the centre gripping arm 12.
In order to keep the axis of the sleeve 22 always passing through the center of the clamping portion 122 when replacing a different clamp arm 12, the following arrangement is made: the sum of the radius of the clamping part 122 and the lengths of the connecting part 121 and the inserting part 1211 is a fixed value; when the clamping arm 12 of one specification is used for operation, the axis of the sleeve 22 passes through the center of the clamping part 122, and after the clamping arm 12 of a different specification is replaced, the axis of the sleeve 22 can be kept to pass through the center of the clamping part 122.
The implementation principle of the femoral neck rotation center positioning device provided by the embodiment of the application is as follows: under different conditions, the diameter of femoral neck has the difference, can change the centre gripping arm 12 for the convenience, uses the different femoral neck adaptations of centre gripping arm 12 and diameter of different specification and dimension, and it is comparatively convenient to operate, has promoted this femoral neck rotation center positioner's suitability.
Example 3
The present embodiment is different from embodiment 1 in that: referring to fig. 5, the connecting member 11 includes a mounting post 113 and two connecting arms 111, the two connecting arms 111 are hinged on the mounting post 113, and the mounting arm 21 is fixedly connected with the mounting post 113; the holding arm 12 is fixed to the connecting arms 111, and the two connecting arms 111 are provided with positioning members 3 for fixing the two connecting arms 111.
Referring to fig. 5 and 6, the positioning element 3 includes a positioning plate 31 and two clamping blocks 32, the two clamping blocks 32 are respectively fixed on the two connecting arms 111, and the two clamping blocks are respectively located on two side surfaces of the two connecting arms 111, which are far away from each other; the positioning plate 31 is of a U-shaped structure, and the upper side surfaces of the clamping block 32 and the connecting arm 111 are attached to the inner side surface of the positioning plate 31; clamping edges 311 are fixedly connected to the inner side surfaces of the two sides of the opening of the positioning plate 31, and clamping grooves 321 for the clamping edges 311 to be embedded are formed in the clamping blocks 32; one end of the clamping block 32 facing the clamping arm 12 is fixedly connected with a butting part 322, and the positioning plate 31 is butted with the butting part 322.
When the positioning device is used for determining the rotation center of the femoral neck, the two connecting arms 111 are rotated to enable the two clamping arms 12 to be clamped on the femoral neck, the positioning plate 31 is buckled on the two connecting arms 111, the positioning plate 31 is slid to the clamping block 32, in the process, the clamping edge 311 is embedded into the clamping groove 321, the two connecting arms 111 are fixed, and the operation is convenient and stable; the mounting arm 21 is fixedly connected to the mounting column 113, and under the condition that the diameter of the femoral neck is deviated, the change of the opening and closing angle of the connecting arm 111 does not influence the position of the mounting arm 21, so that the accuracy of determining the rotation center of the femoral neck is improved.
The implementation principle of the femoral neck rotation center positioning device provided by the embodiment of the application is as follows: when the rotation center of the femoral neck is determined, the connecting arm 111 is adjusted to enable the clamping arm 12 to be clamped on the femoral neck, the two connecting arms 111 are positioned by the positioning plate 31, the operation is convenient, the position of the mounting arm 21 cannot be affected under the condition that the diameter of the femoral neck has small deviation, and the accuracy of determining the rotation center of the femoral neck is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a femoral neck rotation center positioner which characterized in that: comprises a clamping mechanism (1) clamped on the femoral neck and a positioning mechanism (2) arranged on the clamping mechanism (1); the clamping mechanism (1) comprises a connecting piece (11) and two clamping arms (12) arranged on the connecting piece (11), the two clamping arms (12) comprise a connecting part (121) connected to the connecting piece (11) and clamping parts (122) fixedly connected to the connecting part (121), and the two clamping parts (122) are clamped on the femoral neck in a matching mode; the positioning mechanism (2) comprises a mounting arm (21) arranged on the connecting piece (11), a sleeve (22) is arranged at the end part, far away from the connecting piece (11), of the mounting arm (21), the length direction of the sleeve (22) is perpendicular to the plane where the two clamping arms (12) are located, and the axis of the sleeve (22) penetrates through the centers of the two clamping parts (122).
2. The femoral neck rotational center positioning device of claim 1, wherein: the connecting piece (11) comprises two connecting arms (111), and one ends of the two connecting arms (111) far away from the clamping arm (12) are hinged with each other; the end portion of the mounting arm (21) connected to the connecting piece (11) is fixedly connected with a mounting sleeve (24), the mounting sleeve (24) is of a U-shaped structure with an opening facing the connecting arms (111), and the mounting sleeve (24) is buckled on the two connecting arms (111).
3. A femoral neck rotational center positioning device as claimed in claim 2, wherein: one end of the connecting arm (111) facing the clamping arm (12) is fixedly connected with a limiting block (112), and the connecting part (121) is connected to the corresponding limiting block (112); the limiting block (112) is provided with a limiting part (1121) used for limiting the position of the mounting sleeve (24), and the mounting sleeve (24) is connected with the connecting arm (111) and the limiting block (112) in a sliding mode.
4. A femoral neck rotational center positioning device as claimed in claim 3, wherein: the lower side opening of the mounting sleeve (24) is retracted inwards, the two limiting blocks (112) are attached to the inner side surface of the mounting sleeve (24), and the width of the opening at the lower side of the mounting is larger than the distance between the opposite side surfaces of the two connecting arms (111).
5. A femoral neck rotational center positioning device as claimed in claim 3, wherein: the connecting part (121) is fixedly connected with an inserting part (1211), and the limiting block (112) is provided with an inserting groove (1122) for inserting the inserting part (1211).
6. The femoral neck rotational center positioning device of claim 1, wherein: the end part of the end of the mounting arm (21) is provided with a guide cylinder (25), the sleeve (22) is connected with the guide cylinder (25) in a sliding mode, and the sliding direction of the sleeve (22) is the same as the length direction of the sleeve (22).
7. The femoral neck rotational center positioning device of claim 6, wherein: the end face of the sleeve (22) facing the clamping arm (12) is provided with a plurality of positioning prongs (221) for insertion into the femoral head.
8. The femoral neck rotational center positioning device of claim 6, wherein: one end of the sleeve (22) far away from the clamping arm (12) is provided with a stress ring (222), and the size of the outer ring of the section of the stress ring (222) is larger than that of the outer ring of the section of the sleeve (22).
9. The femoral neck rotational center positioning device of claim 1, wherein: the connecting piece (11) comprises a mounting column (113) and two connecting arms (111), the mounting arm (21) is connected to the mounting column (113), the two connecting arms (111) are hinged to the mounting column (113), and the two clamping arms (12) are respectively connected to the two connecting arms (111); the two connecting arms (111) are provided with positioning pieces (3) for fixing the two connecting arms (111).
10. A femoral neck rotational center positioning device as claimed in claim 9, wherein: the positioning piece (3) comprises a positioning plate (31) and two clamping blocks (32), the two clamping blocks (32) are respectively fixed on the two connecting arms (111), and the two clamping blocks (32) are positioned on the side surfaces, far away from each other, of the two connecting arms (111); locating plate (31) is a U-shaped structure, and equal rigid coupling has joint edge (311) on the medial surface of locating plate (31) opening part both sides, offers joint groove (321) that supply joint edge (311) embedding on joint piece (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110203325.XA CN113069250A (en) | 2021-02-24 | 2021-02-24 | Femoral neck rotation center positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110203325.XA CN113069250A (en) | 2021-02-24 | 2021-02-24 | Femoral neck rotation center positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113069250A true CN113069250A (en) | 2021-07-06 |
Family
ID=76609501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110203325.XA Pending CN113069250A (en) | 2021-02-24 | 2021-02-24 | Femoral neck rotation center positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113069250A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116138938A (en) * | 2023-04-21 | 2023-05-23 | 北京爱康宜诚医疗器材有限公司 | Femoral head surface replacement positioning device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050245936A1 (en) * | 2004-04-20 | 2005-11-03 | Finsbury (Development) Limited | Tool |
| US20080183179A1 (en) * | 2004-05-22 | 2008-07-31 | Thomas Siebel | Surgical Jig |
| US20090240253A1 (en) * | 2007-12-07 | 2009-09-24 | Wright Medical Technology, Inc. | Pin Centering Guide with Goniometer |
| US20100152742A1 (en) * | 2003-05-12 | 2010-06-17 | Corin Limited | Head centering jig for femoral resurfacing |
| US20200297360A1 (en) * | 2017-12-13 | 2020-09-24 | Embody Orthopaedic Limited | Guide for positioning a resurfacing head implant |
-
2021
- 2021-02-24 CN CN202110203325.XA patent/CN113069250A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100152742A1 (en) * | 2003-05-12 | 2010-06-17 | Corin Limited | Head centering jig for femoral resurfacing |
| US20050245936A1 (en) * | 2004-04-20 | 2005-11-03 | Finsbury (Development) Limited | Tool |
| US20080183179A1 (en) * | 2004-05-22 | 2008-07-31 | Thomas Siebel | Surgical Jig |
| US20090240253A1 (en) * | 2007-12-07 | 2009-09-24 | Wright Medical Technology, Inc. | Pin Centering Guide with Goniometer |
| US20200297360A1 (en) * | 2017-12-13 | 2020-09-24 | Embody Orthopaedic Limited | Guide for positioning a resurfacing head implant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116138938A (en) * | 2023-04-21 | 2023-05-23 | 北京爱康宜诚医疗器材有限公司 | Femoral head surface replacement positioning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4030813B2 (en) | Auxiliary tool for attaching humeral element of artificial elbow | |
| EP0957782B1 (en) | Drill guide instrument | |
| US5620449A (en) | Mechanical system for blind nail-hole alignment of bone screws | |
| JP6687595B2 (en) | Positioning device for fixing intramedullary nail to long bone | |
| JP3742655B2 (en) | Cutting guide instrument | |
| US4945904A (en) | Orthopedic drill guide device | |
| US6165177A (en) | Alignment guide for insertion of stem prosthesis | |
| CN107530096B (en) | System for orthopedic implant preparation | |
| US8182490B2 (en) | Adjustable angle targeting device for an intramedullary nail and method of use | |
| TW201540252A (en) | Aiming device for distal locking of intramedullary nails and methods of use | |
| CN102958462A (en) | Bone screw assembly and instruments for implantation of the same | |
| CN113069250A (en) | Femoral neck rotation center positioning device | |
| DE69429363T2 (en) | drill guide | |
| CN101686836A (en) | Surgical device | |
| US20050223572A1 (en) | Laser marking device for serial I-joist cutouts | |
| US20130165941A1 (en) | Guide for acetabular component positioning | |
| EP1961379B1 (en) | Apparatus for indicating the bone thickness between a cavity in a bone and the bone surface | |
| US7959639B1 (en) | Trialing system and method utilizing offset | |
| CN109571356B (en) | Hole core adjusting structure, assembly using same and connecting method | |
| US20220387188A1 (en) | Offset selector | |
| CN218979087U (en) | Femur aiming device and medical equipment | |
| GB2258154A (en) | Surgical apparatus for fitting, securing and removing intramedullary splints | |
| CN220145170U (en) | Pin installation device and installation equipment | |
| CN107595447B (en) | Acetabular prosthesis positioning device | |
| EP4178501A1 (en) | Device for shaping and cutting a bone graft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210706 |