CN1330282C - Combined type locked sessile hip joint - Google Patents
Combined type locked sessile hip joint Download PDFInfo
- Publication number
- CN1330282C CN1330282C CNB2004100777810A CN200410077781A CN1330282C CN 1330282 C CN1330282 C CN 1330282C CN B2004100777810 A CNB2004100777810 A CN B2004100777810A CN 200410077781 A CN200410077781 A CN 200410077781A CN 1330282 C CN1330282 C CN 1330282C
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- Prior art keywords
- hole
- hip joint
- sessile
- combined type
- straight barrel
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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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- 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)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The present invention relates to a combined type interlocking sessile hip joint comprising a spherical head, a neck part, an implantation part and an interlocking mechanism, wherein the implantation part is a straight cylindrical body, and a locking nail fixing hole of the interlocking mechanism is arranged on the straight cylindrical body. An intersecting angle between the axial line and the far end surface of the straight cylindrical body conforms to the shape of the inner wall of the tuberosity medullary cavity of the thighbone of a human body, the axial line of the straight cylindrical body and a near end surface are perpendicular, and an inner thread is formed at the inner wall of the near section of the straight cylindrical body. The neck part is a rod body, an outer thread is formed on the rod wall surface of the far head of the rod body, and a multi-edge hole which is inwards concave is arranged on the end surface of the bear head of the rod body. A blind hole is arranged on one side of the spherical head. The far head of the neck part and the near section of the straight cylindrical body of the implantation part are connected by the outer thread on the far head of the neck part in a disassembly mode, and the near head of the neck part and the blind hole of the spherical head are firmly matched and connected. The present invention provides the combined type interlocking sessile hip joint which has convenient implantation, convenient secondary implantation due to the fact that looseness relating parts are greatly reduced and light weight, and can favorably release stress concentration and prosthesis looseness.
Description
[technical field]
The present invention relates to orthopedic instrument, more particularly, the present invention relates to a kind of orthopedic instrument of human hip treatment.
[background technology]
At present, the hip joint of a variety of causes, osteoarthrosis are still multiple, serious or old hip joint, osteoarthrosis still must adopt hip replacement, the implantable artificial hip joint stalk need carry out the orthopaedics replacement operation, it is inserted the human femur under loading pulp cavity form alternative, make patient recover the physiological function of hip joint to a certain extent, alleviating pain improves motion and quality of life.
Existing artificial hip joint is made up of bulb, cervical region and shank, during installation, shank is directly inserted femoral bone cavitas medullaris, makes femur and femoral stem chimeric.Because early stage fine motion of femoral stem and microgranule stimulate bone interface to absorb, and cause the bone dissolution mechanism, may cause artificial femur handle and hip joint loosening late period; In addition, the artificial femur handle structure bears whole pressure for a long time, causes the local area stress concentration, accelerates the local bone absorption of Periprosthetic, and prosthese service life has been shortened in aggravation prosthetic loosening, tired damage and even fracture, causes with the passing of time losing efficacy; When the problems referred to above are serious even may cause the early stage graft failure of prosthese operation.
Industry is being sought service life, the loosening way of solution that prolongs artificial hip joint always for this reason.Have Chinese patent file 200320107607.7 to disclose the fixedly compound interlocking intramedullary nail of self-locking of a kind of femoral intertrochanteric in this regard, this kind intramedullary pin includes the neck of femur self-locking intramedullary nail and femoral shaft self-locking intramedullary nail two large divisions forms.Wherein, the neck of femur self-locking intramedullary nail includes neck of femur self-locking intramedullary nail main body again, neck of femur is followed closely two parts from lock core, adds a dog screw and forms.And its femoral shaft self-locking intramedullary nail, comprise femoral shaft self-locking intramedullary nail main body, expansion lock core and trip bolt composition, it is said: its intramedullary pin apparatus is simple, reliable, cheap, clinical practice is better, can make the mutual intercalation of fracture line, tightly involutory, can implement positioning and fixing to the fracture of femoral intertrochanteric, effectively prevent any type of rotation displacement phenomenon, help union of fracture; Operation wound is little, processing ease, and relative cost is lower, helps early exercise.This kind intramedullary pin adopts expansion structure to increase the anti-torque on fracture seam both sides from the intramedullary cavity wall, adopt cervical region intramedullary pin and key intramedullary pin interlocking structure simultaneously, but, because cervical region intramedullary pin and key intramedullary pin still are equipped with stressed nail hole on the bone wall, the loosening problem of implant still can appear in the course of time, in case operation will bring more complicated problems once more.
Also have Chinese patent file 200320118370.2 to disclose a kind of artificial hip joint femoral shaft in this regard, include cervical vertebra, handle neck and handle body, it is characterized in that making matsurface at the near-end of handle body, satisfy and increase coefficient of friction, the contact surface of increase and osseous tissue reaches fastening, difficult loosening purpose is installed.Improve service life, thereby eliminate patient's physiological load.Be fit to the human hip pathological changes and carry out the use of bone replacement operation.It is limited that utilize this device secure fit and frictional force solve the loosening obvious effect of problem, is difficult to essence and solves.
There is Chinese patent file 95212528.5 to disclose the acetabular component implant that a kind of femoral hip prosthesis prosthese is planted the personage and is mated use again, includes a femur implantation portion, in order to neck portion on the section Compact bone that covers femur and above it cervical region; It is characterized in that, the bottom to the femur implantation portion that femur end far away stretches of this prothesis implant body is columned positive round surface, in the left and right sides of the femur implantation portion of nearly femur end and lateral part, medial part all dwindle gradually downwards and be the sub-elliptical wedge shape from neck portion, the neck portion of top then has a down dip and ovalize in a side direction.This device is used in the interior combination hip prosthesis of acetabular bone nest of femoral hip prosthesis termination cervical region excision back implanted femur and basin and plants the personage.Also there is top problem in this apparatus structure.
There is Chinese patent file 02279259.7 to disclose a kind of customization type artificial hip joint femoral shaft, it mainly comprises: head and neck section, neck neck, near section of joint handle, far away section of joint handle, it is characterized in that: nearly section of joint handle and joint handle section far away design according to femur cavitas medullaris shape, and neck neck is movable, has the Adaptive matching function.Its advantage is: machinability is good, can obviously reduce with respect to existing customization type femoral stem production cost; Fitting operation is convenient, has reduced to occur unusual probability in the art; The early stage fixed effect of postoperative is good, has reduced femoral stem loosening probability in late period.
Having Chinese patent file 02271916.4 to disclose a kind of artificial hip joint handle is characterized in that some levels being set and mutual equidistant equilibrated zigzag fin from top to bottom on the surface of existing artificial hip joint handle handle body near-end.It is said: compared with the prior art this artificial hip joint handle has can prevent artificial hip joint handle loosening easily and sinking and situation generation in the human femur under loading pulp cavity, has improved stablizing after the artificial hip joint handle is implanted, and reaches good result of use.In fact, the zigzag fin initial stage has certain effect, but same problem still may occur behind the certain hour.
There is Chinese patent file 94245562.2 to disclose a kind of cement artificial hip joint, its handle is the tapering shape from the top down, the handle tail end has four equidistant foliaceous projections, the handle near-end has four papillaes, the outer surface of its acetabular bone has five papillaes, it is said: this structure makes the artificial hip joint handle can remain on the femoral bone cavitas medullaris center, make and keep equidistant between manual acetabulum and the bone socket, thereby make the bone cement thickness uniformity of filling between artificial prosthesis and the bone, and the optimum thickness of assurance 2-3mm, can reduce the ubiquitous easily loosening major defect of existing bone cement artificial hip joint to greatest extent, the useful life who prolongs artificial hip joint improves curative effect.This technology needs to fill bone cement between prosthese and bone, and problem is all arranged in patient's curative effect and quality of life and service life.
[summary of the invention]
At the above-mentioned shortcoming of prior art, thereby the technical purpose that the present invention will reach is will provide a kind of to implant the convenient and loosening part that relates to and significantly reduce and be convenient to that secondary is implanted, quality is light and handy, can better relieve stresses concentrate and the combined type locked sessile hip joint of prosthetic loosening.
For this reason, technical scheme of the present invention is a kind of combined type locked sessile hip joint, this combined type locked sessile hip joint comprises ballhead, cervical region, implantation portion, interlocking mechanism, this implantation portion is straight barrel and the pinning fixing hole which is provided with interlocking mechanism, and the angle of cut between the axis of described cylindrical shell and its distal face meets human femur under loading tuberosity pulp cavity inner wall shape, vertical between the axis of this cylindrical shell and its proximal end face, and be formed with female thread on the near section inwall of cylindrical shell; Cervical region is a barred body, is formed with external screw thread on the excellent wall of the head far away of this barred body, and has many ribs hole of indent on its near head end face; Offer blind hole on one side of ballhead; The head far away of cervical region removably is connected by its near section of going up external screw thread and implantation portion cylindrical shell, can securely be connected between the blind hole of near of cervical region and ballhead.One confrontational hip joint is by the bulky construction of the prosthese handle positioning supports in the key pulp cavity of implanted unit, the implantation portion of stockless hip joint of the present invention only has the implantation portion of the short circuit in the implanted femur tuberosity pulp cavity, overall weight, the size of hip joint alleviates greatly, alleviate for the added burden of patient's shank greatly, and this not only can improve patient's postoperative life quality, and the more important thing is and can reduce stress concentration and delay loosening time of origin because of weight saving; In addition, the implantation portion of stockless hip joint of the present invention is in the oblique implanted femur tuberosity pulp cavity, than the implanting handle of heavy easy sinking be fixed up easier, stress concentration is very little; Add on the pinning fixing hole of implantation portion cylindrical shell and be provided with the interlocking pinning, and because the arm of force between pinning and short circuit implantation portion is very short, so that distortion moment is all less; The more important thing is in addition, because operation does not injure femoral shaft, just in case after the several years, becoming flexible also appears in artificial hip joint of the present invention, can also greatly facilitate the success and the postoperative quality of secondary implant surgery for second operation stays one section good femoral shaft basis.Obviously, above-mentionedly or the like form the creative advantage that has characteristic of the present invention.
For further strengthening above-mentioned principal advantages of the present invention, simplifying and implement structure, the present invention takes following concrete corrective measure: described cervical region barred body is circular barred body, described implantation portion periphery is circular or oval-shaped anchor ring, and its ring surface is formed with protruding asperities or vertical teeth groove.Described pinning fixed hole position is on far away section of described implantation portion cylindrical shell.
In order to guarantee the dynamics of interlocking, described pinning fixing hole comprise vertical described implantation portion drum shaft to vertical nail hole and the described implantation of oblique portion drum shaft to the skew nailing hole.Described vertical nail hole connects relative barrel coaxially, and co-axial vertical nail hole forms one group.Form oblique splitter shape between described implantation portion's cylindrical shell and distal face; Described skew nailing hole is opened in oblique splitter one side of described implantation portion's cylindrical shell section far away and points to the breach side of oblique splitter.
For convenience different patients and the different interlocking of left and right lower limb, described implantation portion cylindrical shell is provided with 2 groups and vertically follows closely the hole, forms the cross angle between the axis that these 2 groups are vertically followed closely the hole.Described skew nailing axially bored line is through described 2 groups of angle bisector plane places of vertically following closely the hole.
Strengthen resistance to deformation, the loosing prevention ability of implant for postoperative utilizes patient's self inostosis ability, the stress concentration of minimizing implant and locking also circumferentially offers some radial pores on described implantation portion's cylindrical shell section far away in uniform way.These pores help that sclerotin is grown into wherein and the stress concentration that disperses implantation portion.
In order to make implant surgery convenient, has the rounding fillet surface between described implantation portion's cylindrical shell proximal end face and the cylinder lateral wall; Many ribs hole of described indent is interior hexagonal (hexagon)nut hole.
In a word, architecture advances of the present invention have be easy to implement, advantage effective, with low cost.
Below, with accompanying drawing technical solution of the present invention is described further in conjunction with specific embodiments.
[description of drawings]
Fig. 1 is structure master's sketch map of the embodiment of the invention.
Fig. 2 is the schematic top plan view of Fig. 1.
[specific embodiment]
As shown in Figure 1, 2: a kind of combined type locked sessile hip joint, this combined type locked sessile hip joint comprises ballhead 1, cervical region 2, implantation portion 3, interlocking mechanism, this implantation portion 3 is straight barrel and the fixing hole which is provided with the pinning 4 of interlocking mechanism, and the angle of cut between the axis of this straight barrel and its distal face 31 ' meets human femur under loading tuberosity pulp cavity inner wall shape, vertical between the axis of this straight barrel and its proximal end face 31, have rounding fillet surface 32 between straight barrel proximal end face 31 and the straight barrel sidewall; And be formed with female thread 33 on the near section inwall of straight barrel; Implantation portion 3 peripheries are circular or oval-shaped anchor ring, and its ring surface is formed with protruding asperities or vertical teeth groove (detailed showing).Cervical region 2 is circular barred body, is formed with external screw thread 22 on far away 21 ' the excellent wall of this barred body, and hexagonal (hexagon)nut hole 23 in having on its near 21 end face; Offer blind hole 10 on one side of ballhead 1; Far away 21 ' of barred body removably is connected by near section with straight barrel of external screw thread 22 on it, can securely be connected between the blind hole 10 of near 21 of barred body and ballhead 1.
Form oblique splitter shape between straight barrel and distal face 31 '; The fixed hole position of pinning 4 is on far away section of straight barrel.The pinning fixing hole comprise the straight vertical drum shaft to vertical nail hole 30A and the axial skew nailing hole 30B of oblique straight barrel.
Straight barrel is provided with 2 groups and vertically follows closely hole 30A, forms the cross angle between these the 2 groups axis of vertically following closely hole 30A.Vertical nail hole 30A connects relative barrel coaxially, and co-axial vertical nail hole 30A forms one group.
Also circumferentially offer some radial pores 34 in uniform way on the straight barrel section far away.
Implantation order: straight barrel implanted femur tuberosity pulp cavity inwall, pinning 4 inserts one of vertical nail hole 30A group and skew nailing hole 30B interlocking location, female thread 33 on the near section inwall of barred body precession straight barrel is fastening, again with blind hole 10 secure fit of ballhead 1 near 21 of barred body.
Claims (10)
1, a kind of combined type locked sessile hip joint, this combined type locked sessile hip joint comprises ballhead (1), cervical region (2), implantation portion (3), interlocking mechanism, this implantation portion (3) is straight barrel and the fixing hole which is provided with the pinning (4) of interlocking mechanism, it is characterized in that: the angle of cut between the axis of described straight barrel and its distal face (31 ') meets human femur under loading tuberosity pulp cavity inner wall shape, vertical mutually between the axis of this straight barrel and its proximal end face (31), and be formed with female thread (33) on the near section inwall of this straight barrel; Described cervical region (2) is a barred body, is formed with external screw thread (22) on the excellent wall of the head far away (21 ') of this barred body, and has many ribs hole (23) of indent on its nearly head (21) end face; Offer blind hole (10) on one side of described ballhead (1); The head far away (21 ') of described barred body removably is connected by its near section of going up external screw thread (22) and described straight barrel, can securely be connected between near (21) of described barred body and the blind hole (10) of described ballhead (1).
2, combined type locked sessile hip joint as claimed in claim 1 is characterized in that: described barred body is circular barred body, and described implantation portion (3) periphery is circular or oval-shaped anchor ring, and its ring surface is formed with protruding asperities or vertical teeth groove.
3, combined type locked sessile hip joint as claimed in claim 1 or 2 is characterized in that: the fixed hole position of described pinning (4) is on far away section of described straight barrel.
4, combined type locked sessile hip joint as claimed in claim 3 is characterized in that: the fixing hole of described pinning (4) comprises vertical nail hole (30A) and the axial skew nailing hole (30B) of the described straight barrel of oblique that vertical described straight barrel is axial.
5, combined type locked sessile hip joint as claimed in claim 4 is characterized in that: described vertical nail hole (30A) connects relative barrel coaxially, and co-axial vertical nail hole (30A) forms one group.
6, combined type locked sessile hip joint as claimed in claim 4 is characterized in that: described straight barrel is provided with 2 groups and vertically follows closely hole (30A), forms the cross angle between these the 2 groups axis of vertically following closely hole (30A).
7, combined type locked sessile hip joint as claimed in claim 4 is characterized in that: form oblique splitter shape between described straight barrel and distal face (31 '); Described skew nailing hole (30B) is opened in oblique splitter one side of described straight barrel section far away and points to the breach side of oblique splitter.
8, combined type locked sessile hip joint as claimed in claim 6 is characterized in that: described skew nailing hole (30B) axis is through described 2 groups of angle bisector plane places of vertically following closely hole (30A).
9, combined type locked sessile hip joint as claimed in claim 1 or 2 is characterized in that: also circumferentially offer some radial pores (34) in uniform way on the described straight barrel section far away.
10, combined type locked sessile hip joint as claimed in claim 1 or 2 is characterized in that: have rounding fillet surface (32) between described straight barrel proximal end face (31) and the straight barrel sidewall; Many ribs hole (23) of described indent is interior hexagonal (hexagon)nut hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100777810A CN1330282C (en) | 2004-12-30 | 2004-12-30 | Combined type locked sessile hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100777810A CN1330282C (en) | 2004-12-30 | 2004-12-30 | Combined type locked sessile hip joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1631341A CN1631341A (en) | 2005-06-29 |
| CN1330282C true CN1330282C (en) | 2007-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100777810A Expired - Fee Related CN1330282C (en) | 2004-12-30 | 2004-12-30 | Combined type locked sessile hip joint |
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| Country | Link |
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| CN (1) | CN1330282C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102551921B (en) * | 2012-01-13 | 2014-07-02 | 南方医科大学 | Artificial femoral stem for fracture surgery around hip joint prosthesis |
| CN104758094A (en) * | 2015-04-30 | 2015-07-08 | 李照文 | Locking type artificial femoral stem |
| CN108670502B (en) * | 2018-05-24 | 2021-05-11 | 大博医疗科技股份有限公司 | Femoral stem of femoral joint prosthesis and femoral joint prosthesis |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195306Y (en) * | 1994-07-12 | 1995-04-26 | 王尚福 | Artificial femoral head |
| CN2221953Y (en) * | 1995-03-13 | 1996-03-13 | 潘滔 | Improved artificial hip joint |
| US5580352A (en) * | 1990-06-06 | 1996-12-03 | Sekel; Ronald | Distal shaft with fast and slow screw threads |
| US6120544A (en) * | 1997-05-16 | 2000-09-19 | Eska Implants Gmbh & Co. | Femur endoprosthesis for articial hip joint |
| WO2001082841A1 (en) * | 2000-05-03 | 2001-11-08 | Aesculap Ag & Co. Kg | Femoral neck prosthesis |
| US6706073B2 (en) * | 2000-07-29 | 2004-03-16 | Klaus Draenert | Neck-slip-prosthesis |
-
2004
- 2004-12-30 CN CNB2004100777810A patent/CN1330282C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5580352A (en) * | 1990-06-06 | 1996-12-03 | Sekel; Ronald | Distal shaft with fast and slow screw threads |
| CN2195306Y (en) * | 1994-07-12 | 1995-04-26 | 王尚福 | Artificial femoral head |
| CN2221953Y (en) * | 1995-03-13 | 1996-03-13 | 潘滔 | Improved artificial hip joint |
| US6120544A (en) * | 1997-05-16 | 2000-09-19 | Eska Implants Gmbh & Co. | Femur endoprosthesis for articial hip joint |
| WO2001082841A1 (en) * | 2000-05-03 | 2001-11-08 | Aesculap Ag & Co. Kg | Femoral neck prosthesis |
| US6706073B2 (en) * | 2000-07-29 | 2004-03-16 | Klaus Draenert | Neck-slip-prosthesis |
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| Publication number | Publication date |
|---|---|
| CN1631341A (en) | 2005-06-29 |
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Effective date of registration: 20080523 Address after: The village of Guangdong city in Guangzhou Province, two cross road No. 26 Patentee after: The Sixth Affiliated Hospital of Sun Yat-sen University Address before: Room 803, building B, blue sea bay, Linjiang Road, Zhujiang New Town, Guangdong, Guangzhou Patentee before: Pan Tao |
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