CN104146798B - A kind of tail rod locating device - Google Patents
A kind of tail rod locating device Download PDFInfo
- Publication number
- CN104146798B CN104146798B CN201410443477.7A CN201410443477A CN104146798B CN 104146798 B CN104146798 B CN 104146798B CN 201410443477 A CN201410443477 A CN 201410443477A CN 104146798 B CN104146798 B CN 104146798B
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- adjustment
- positioning element
- block
- tail rod
- locating device
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- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 37
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 210000002239 ischium bone Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241001227561 Valgus Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 210000003689 pubic bone Anatomy 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
Landscapes
- 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 present invention discloses a kind of tail rod locating device, comprise locating mechanism and adjustment mechanism, wall after described locating mechanism clamping acetabular bone, comprise a positioning rod, the connection of described adjustment mechanism is arranged on the described location bar of described locating mechanism, being provided with the sleeve for locating described tail rod on described adjustment mechanism, described adjustment mechanism comprises moving-adjusting structure and angular setting structure, adjusts with the position to described sleeve. By wall after locating mechanism clamping acetabular bone in the present invention, then sleeve planimetric position is adjusted by moving-adjusting structure, by the angle of angular setting structural adjustment sleeve, thus wall after can either rapidly and accurately the present invention be clamped acetabular bone, can carry out the sleeve wearing tail rod fast accurately adjusting again, thus ensure tail rod efficient, reliably operate.
Description
Technical field
The present invention relates to a kind of tail rod locating device.
Background technology
At present, before acetabular component is implanted, need first to insert tail rod. The common locator means of this tail rod is: position by means of the relation between patient body position and sick bed, to determine front rake and valgus angle, which is a kind of subjective determination mode, although routine is applied in instruments, but locating effect is not obvious, the dislocation rate caused is higher. Also has the apparatus using ilium and pubis to carry out three-point fix, but apparatus volume is big, operates loaded down with trivial details. In addition, preoperative planning position mode can also be adopted at present: being planned by CT, digitizing software etc. and use 3D printing technique, the customized product of making positions, though this technology locating effect is fine, but price is very expensive, the economic pressures of patient are very big, therefore, it is difficult to promote the use of.
Summary of the invention
For problems of the prior art, the object of the present invention for providing one to be connected conveniently, reliable, work point adjustment is convenient, tail rod locating device accurately.
For achieving the above object, the technical scheme of the present invention is as follows:
A kind of tail rod locating device, comprise locating mechanism and adjustment mechanism, wall after described locating mechanism clamping acetabular bone, comprise a positioning rod, the connection of described adjustment mechanism is arranged on the described location bar of described locating mechanism, being provided with the sleeve for locating described tail rod on described adjustment mechanism, described adjustment mechanism comprises moving-adjusting structure and angular setting structure, adjusts with the position to described sleeve.
Further, described locating mechanism comprises lower positioning element and the upper positioning element that two are oppositely arranged, and described lower positioning element and described upper positioning element and described location bar form wedge-shaped clamping structure jointly.
Further, in 89 degree of angles between described lower positioning element and described location bar.
Further, described lower positioning element and described upper positioning element are bow, and the arc of described lower positioning element mates mutually with ischium incisura, and the arc of described upper positioning element mates mutually with acetabular bone inwall.
Further, described lower positioning element is connected with described location bar away from one end of described upper positioning element, and described upper positioning element is connected with a positioning block away from one end of described lower positioning element, and described preset pieces slides and is sheathed on the bar of described location.
Further, described location bar is provided with screw thread, and by this screw thread accessory one lock nut, this lock nut leans in described preset pieces upper end.
Further, described moving-adjusting structure comprises sliding bar and slide block, and described sliding bar one end connects described location bar, and described slide block slip cover is connected on described sliding bar.
Further, described angular setting structure comprises regulating rod, first adjustment block, 2nd adjustment block and connection block, described regulating rod is connected with described sleeve, and can be sheathed on rotationally on described slide block, described first adjustment block is provided with the first adjustment tank, and be connected with described regulating rod, described 2nd adjustment block is provided with the 2nd adjustment tank, and connection is arranged on described slide block, between described first adjustment tank and described 2nd adjustment tank, there is angle, described connection block is arranged in described first adjustment tank and described 2nd adjustment tank simultaneously, and can slide in described first adjustment tank and described 2nd adjustment tank.
Further, described connection block is connected with the lifting rod of convenient operation, described 2nd adjustment block arranges the through hole being connected described 2nd adjustment tank, one end that described lifting rod connects described connection block is arranged in described 2nd adjustment tank, outside the other end protrudes from described 2nd adjustment block through described through hole.
Further, the outer side of described first adjustment block or described 2nd adjustment block is provided with angle mark.
The useful effect of the present invention is, by wall after locating mechanism clamping acetabular bone in the present invention, then sleeve planimetric position is adjusted by moving-adjusting structure, by the angle of angular setting structural adjustment sleeve, thus after can either rapidly and accurately the present invention be clamped acetabular bone on wall, can carry out the sleeve wearing tail rod fast accurately adjusting again, thus ensure tail rod efficient, reliably operate.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is the tail rod positioning device structure schematic diagram of the present invention;
Fig. 2 is tail rod locating device angular setting arrangement works state one schematic diagram of the present invention;
Fig. 3 is tail rod locating device angular setting arrangement works state two schematic diagram of the present invention;
Fig. 4 is that the tail rod locating device of the present invention is connected the structural representation of operated member;
Fig. 5 is the tail rod locating device using state schematic diagram of the present invention.
Embodiment
The exemplary embodiments embodying feature of present invention and advantage will describe in the following description in detail. Iting should be understood that the present invention can have various changes in different embodiments, it does not all depart from the scope of the present invention, and explanation and accompanying drawing wherein is being when the use explained in essence, and is not used to restriction the present invention.
The tail rod locating device of the present invention can be applied to fixed adjustment and install the occasion of tail rod, and as shown in Figure 1, the tail rod locating device 1 of the present invention comprises locating mechanism 12 and adjustment mechanism 14. Wherein locating mechanism 12 is for clamping the rear wall (with reference to figure 4 and Fig. 5 Suo Shi) of acetabular bone 7, and adjustment mechanism 14 is for adjusting the position of the relative acetabular bone 7 of sleeve 15. Locating mechanism 12 comprises the two lower positioning elements being oppositely arranged 201 and upper positioning element 202, lower positioning element 201 forms wedge-shaped clamping structure jointly with upper positioning element 202 and location bar 203, so that location bar 203 clamps the rear wall of acetabular bone 7, wherein descend between positioning element 201 and location bar 203 in 89 degree of angles. In addition, this clamping structure can also be other structure formations being arranged on the bar 203 of location, and such as elastic periphery leans on mechanism etc. to subsides. Adjustment mechanism 14 is rotationally connected and is arranged on locating mechanism 12, adjustment mechanism 14 is provided with the sleeve 15 for sheathed tail rod 3, adjustment mechanism 14 comprises moving-adjusting structure 16 and angular setting structure 18, to be adjusted in the planimetric position of sleeve 15 and angle position.
The application scenario of the present invention is not limited, below in conjunction with a specific embodiment, the concrete structure of the present invention is described and realizes process. In this embodiment, tail rod 3 is the tail rod of the prosthese for acetabular bone 7. When the present invention is used in the location of acetabular component tail rod, the card folder laminating of locating mechanism 12 and the rear wall of acetabular bone 7 is determined according to acetabular bone incisura angle. Acetabular bone incisura angle refers to the extended line of wall after ischium big incisura to acetabular bone and by the angle the straight line of acetabular bone front and rear wall, acetabular bone incisura angle is the feature of human body invariability, can not change because of various illness, and perseverance is 89 ��.
The tail rod locating device 1 of application the present invention operates the tail rod 3 of acetabular component, eliminates the interference of artificial location, and accurate positioning is effective. Locating device is easy to use, only needs three steps can complete the location of front rake and valgus angle. Meanwhile, forward leaning angle can be increased according to clinical needs of patient, more ensure the risk of postoperative dislocation.
Especially by an embodiment, the relative tertiary location of each structure for convenience of description, determines upper and lower relation with the relative position of the present invention in drawing. In the present embodiment, lower positioning element 201 and upper positioning element 202 are bow, and the arc of lower positioning element 201 mates mutually with ischium incisura, the arc of upper positioning element 202 with acetabular bone inwall to mating. Lower positioning element 201 one end is connected with location bar 203 times ends, is generally convenient making, and lower positioning element 201 is integrally formed at the lower end of this location bar 203. Upper positioning element 202 is connected with a positioning block 204, and its type of attachment can be welding, it is also possible to be integrally formed. Preset pieces 204 is hexahedron structure, is provided with through hole, and being slided by this through hole preset pieces 204 is sheathed on the bar 203 of location. Bar portion above the bar 203 of location is provided with screw thread, and by this screw thread accessory one lock nut 205, this lock nut 205 leans in preset pieces 204 upper surface, to press from both sides after by wall after acetabular bone 7 at lower positioning element 201 and upper positioning element 202 and location bar 203, make the relative position of lower positioning element 201, upper positioning element 202 and location bar 203 and acetabular bone 7 constant by leaning preset pieces 204, i.e. the position of lock in place bar 203.
In the present embodiment, moving-adjusting structure 14 comprises sliding bar 601 and slide block 602. Sliding bar 601 one end connects location bar 203, and the concrete mode of connection in the present embodiment is, is connected with turning set 603 in one end of sliding bar 601, and turning set 603 can be sheathed on the bar 203 of location rotationally. Sliding bar 601 the other end suspension, slide block 602 cover that slides is connected on sliding bar 601. For ensureing not rotate between sliding bar 601 and slide block 602, for not rounded coordinates between sliding bar 601 and slide block 602, it is possible to be square or the structure such as Polygons.
In the present embodiment, angular setting structure 18 comprises regulating rod 801, first adjustment block 802, the 2nd adjustment block 803 and connects block 806. Wherein, one end of regulating rod 801 is connected with sleeve 15, and type of attachment is generally welding, is sheathed on slide block 602 the other end of regulating rod 801, and can rotate by opposing slider 602. Being provided with the first adjustment tank 804 in first adjustment block 802, and lower end is connected with regulating rod 801, its mode of connection can adopt the mode that key connects or not rounded coordinates. 2nd adjustment block 803 is provided with the 2nd adjustment tank 805, and is fixedly installed on slide block 602, between the first adjustment tank 804 and the 2nd adjustment tank 805, there is angle, non-parallel setting. Connect block 806 to be arranged in the first adjustment tank 804 and the 2nd adjustment tank 805 simultaneously, and can slide in the first adjustment tank 804 and the 2nd adjustment tank 805.
In the present embodiment, connect the lifting rod 807 being connected with convenient operation on block 806. The setting of this lifting rod 807 is as shown in Figures 2 and 3: arrange the through hole being connected the 2nd adjustment tank 805 in the 2nd adjustment block 803, through hole direction is parallel with the 2nd adjustment tank 805 Axis Extension direction, lifting rod 807 is arranged in the 2nd adjustment tank 805 in the connected one end of block 806 with being connected, the other end protrudes from the 2nd adjustment block 803 upper end through through hole, between lifting rod 807 and through hole, there is gap, so that moving wherein. In addition, being provided with angle mark 808 on the outer side of the 2nd adjustment block 803, connection block 806 stretches out the 2nd adjustment tank 805 part has one to point to mark, by pulling lifting rod 807 up and down, course beacon score other orientation angle mark 808 different angles, determine front rake. In the present embodiment, angular marking is arranged in the 2nd adjustment block 803, in fact also can be arranged in the first adjustment block 802.
In actual mechanical process, first by lower positioning element 201 related location bar 203 along the rear wall insertion of human body acetabular bone 7, lower positioning element 201 is detained the big incisura of ischium, and now, the tangent line of location bar 203 place axis and lower positioning element 201 and the big incisura point of contact of ischium is roughly in 89 degree of angles. preset pieces 204 is sheathed on the bar 203 of location together with upper positioning element 202, and press lower upper positioning element 202 as shown in Figure 4, positioning element 202 is made to detain acetabular bone 7 inwall, again by the effect of lock nut 205 downward pressure, by above-mentioned locking position, thus make locating structure 12 be fixed on wall after acetabular bone 7, namely and the anatomical axis line parallel of acetabular bone bar 203 axis is now located. then cunning bar 601 cover is connected on the bar 203 of location, and the slide block 602 installing angular setting structure 18 is slided and is sheathed on sliding bar 601, the position of the 603 relative locating mechanisms 12 of change adjustment mechanisms 14 is overlapped by rotary motion, then by the planimetric position of slide block 602 with the change adjustment angular setting structure 18 of sliding bar 601 accessory position, until the intersection point of sliding bar 601 and regulating rod 801 is positioned at the central position of human body acetabular bone. adjusting front rake finally by angular setting structure 14, when lifting rod 807 is in position as shown in Figure 2, the axis of sleeve 15 and location bar 203 axis being parallel, namely with the anatomical axis line parallel of acetabular bone. when installing prosthese, sometimes in order to make the prosthese of installation more stable, doctor needs the angle adjusting front rake, at this moment lifting rod 807 is operated, connection block 806 is pulled to change the relative position between the first adjustment block 802 and the 2nd adjustment block 803, the angle of adjustment can be found out from the angle mark 805 the 2nd adjustment block 803, as shown in Figures 2 and 3, owing to there is angle between the first adjustment tank 804 and the 2nd adjustment tank 805, pull and first adjustment block 802 at the first adjustment tank 804 place during lifting rod 807, will be driven to offset, first adjustment block 802 times end is fixedly connected on regulating rod 801, so that the angle of regulating rod 801 is finely tuned, there is position adjustment in regulating rod 801 band moving sleeve 15, after front rake after to be adjusted is determined, by tail rod 3 through sleeve 15, and its head is inserted in acetabular bone 7, thus complete the location operation of tail rod 3 on acetabular bone 7.
When tail rod 3 is positioned on acetabular bone 7, namely doctor can refer to the direction of tail rod 3, acetabular bone file is used to carry out acetabular bone process and setting acetabular prosthese, the direction of acetabular bone file or the direction of setting acetabular prosthese is located more accurately in order to better, parallel device can be set on tail rod 3, make location acetabular bone file and the instrument of setting acetabular prosthese keep parallel with the direction of tail rod 3.
The useful effect of the present invention is, the present invention clamps the rear wall of acetabular bone 7 by lower positioning element 201 and upper positioning element 202, determine to locate the axis of bar 203 by the angle design of lower positioning element 201 and location bar 203, then sleeve 15 planimetric position is adjusted by moving-adjusting structure 16, the angle of sleeve 15 is adjusted by angular setting structure 18, can carry out fast accurately adjusting to the sleeve 15 wearing tail rod 3, thus ensure tail rod 3 efficient, reliably locate, be that the process of follow-up acetabular bone and setting acetabular prosthese provide accurate guiding.
The technical scheme of the present invention is disclosed as above by preferred embodiment. Those skilled in the art, it should be recognized that the change done when not departing from the scope and spirit of the present invention that the claim appended by the present invention discloses and retouching, all belong within the protection domain of claim of the present invention.
Claims (9)
1. a tail rod locating device, it is characterized in that, comprise locating mechanism and adjustment mechanism, wall after described locating mechanism clamping acetabular bone, comprise a positioning rod, the connection of described adjustment mechanism is arranged on the described location bar of described locating mechanism, described adjustment mechanism is provided with the sleeve for locating described tail rod, described adjustment mechanism comprises moving-adjusting structure and angular setting structure, adjust with the position to described sleeve, described moving-adjusting structure comprises sliding bar and slide block, described locating mechanism comprises lower positioning element and the upper positioning element that two are oppositely arranged, described lower positioning element and described upper positioning element and described location bar form wedge-shaped clamping structure jointly.
2. tail rod locating device as claimed in claim 1, it is characterised in that, in 89 degree of angles between described lower positioning element and described location bar.
3. tail rod locating device as claimed in claim 1, it is characterised in that, described lower positioning element and described upper positioning element are bow, and the arc of described lower positioning element mates mutually with ischium incisura, and the arc of described upper positioning element mates mutually with acetabular bone inwall.
4. tail rod locating device as claimed in claim 1, it is characterized in that, described lower positioning element is connected with described location bar away from one end of described upper positioning element, and described upper positioning element is connected with a positioning block away from one end of described lower positioning element, and described preset pieces slides and is sheathed on the bar of described location.
5. tail rod locating device as claimed in claim 4, it is characterised in that, described location bar is provided with screw thread, and by this screw thread accessory one lock nut, this lock nut leans in described preset pieces upper end.
6. tail rod locating device as claimed in claim 1, it is characterised in that, described sliding bar one end connects described location bar, and described slide block slip cover is connected on described sliding bar.
7. tail rod locating device as claimed in claim 6, it is characterized in that, described angular setting structure comprises regulating rod, first adjustment block, 2nd adjustment block and connection block, described regulating rod is connected with described sleeve, and can be sheathed on rotationally on described slide block, described first adjustment block is provided with the first adjustment tank, and be connected with described regulating rod, described 2nd adjustment block is provided with the 2nd adjustment tank, and connection is arranged on described slide block, between described first adjustment tank and described 2nd adjustment tank, there is angle, described connection block is arranged in described first adjustment tank and described 2nd adjustment tank simultaneously, and can slide in described first adjustment tank and described 2nd adjustment tank.
8. tail rod locating device as claimed in claim 7, it is characterized in that, described connection block is connected with the lifting rod of convenient operation, described 2nd adjustment block arranges the through hole being connected described 2nd adjustment tank, one end that described lifting rod connects described connection block is arranged in described 2nd adjustment tank, outside the other end protrudes from described 2nd adjustment block through described through hole.
9. tail rod locating device as claimed in claim 7, it is characterised in that, the outer side of described first adjustment block or described 2nd adjustment block is provided with angle mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443477.7A CN104146798B (en) | 2014-09-02 | 2014-09-02 | A kind of tail rod locating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443477.7A CN104146798B (en) | 2014-09-02 | 2014-09-02 | A kind of tail rod locating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104146798A CN104146798A (en) | 2014-11-19 |
| CN104146798B true CN104146798B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410443477.7A Active CN104146798B (en) | 2014-09-02 | 2014-09-02 | A kind of tail rod locating device |
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| Country | Link |
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| CN (1) | CN104146798B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108078618B (en) * | 2018-02-12 | 2024-05-24 | 中国医学科学院整形外科医院 | Pelvis traction approximator |
| CN112972074B (en) * | 2021-02-03 | 2022-10-25 | 北京市春立正达医疗器械股份有限公司 | Acetabulum center locator |
| CN113456254B (en) * | 2021-08-05 | 2022-06-21 | 电子科技大学 | Hip socket anteversion angle and abduction angle measuring system and method in hip joint replacement |
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| CN104146798A (en) | 2014-11-19 |
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Inventor after: Li Wenzhao Inventor after: Xu Shufu Inventor after: Xu Kai Inventor after: Wang Junling Inventor before: Li Wenzhao Inventor before: Xu Kai Inventor before: Wang Junling |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240410 Address after: G356, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee after: Beijing natong Medical Technology Holding Co.,Ltd. Country or region after: China Address before: 100082 room 8-2-1201, ocean view area 15, Desheng West Street, Haidian District, Beijing. Patentee before: BEIJING NATON TECHNOLOGY GROUP Co.,Ltd. Country or region before: China |