CN104546034A - Medical femoral head extractor - Google Patents
Medical femoral head extractor Download PDFInfo
- Publication number
- CN104546034A CN104546034A CN201410844657.6A CN201410844657A CN104546034A CN 104546034 A CN104546034 A CN 104546034A CN 201410844657 A CN201410844657 A CN 201410844657A CN 104546034 A CN104546034 A CN 104546034A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- head
- fixed mechanism
- auxiliary clamping
- clamping fixed
- 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.)
- Granted
Links
- 238000010079 rubber tapping Methods 0.000 claims abstract description 21
- 238000000605 extraction Methods 0.000 claims description 15
- 210000000689 upper leg Anatomy 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 6
- 210000004394 hip joint Anatomy 0.000 abstract description 4
- 210000000588 acetabulum Anatomy 0.000 abstract description 2
- 230000000399 orthopedic effect Effects 0.000 abstract 2
- 210000002436 femur neck Anatomy 0.000 abstract 1
- 231100000915 pathological change Toxicity 0.000 description 4
- 230000036285 pathological change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 206010020880 Hypertrophy Diseases 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
Classifications
-
- 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
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
- A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a medical femoral head extractor and belongs to the field of medical instruments for orthopedic operation. The medical femoral head extractor is suitable for clinical orthopedic artificial hip joint replacement operation and comprises a connecting rod, a handle is arranged at one end of the connecting rod, a self-tapping threaded head integrally formed with the connecting rod is arranged at the other end of the connecting rod, an auxiliary clamping fixing mechanism is arranged above the self-tapping threaded head on the connecting rod and is of a cross structure extending out by taking the connecting rod as the center, and a threaded hole is formed in each of four rods of the cross structure. When the medical femoral head extractor is in use, a pointed end of the self-tapping threaded head penetrates the section of a femoral neck, the self-tapping threaded head is rotated into a cancellous bone by pressurizing, locking screws are enabled to pass the threaded holes in the cross structure to be screwed into a femoral head, and then the handle is lifted to extract the femoral head. The medical femoral head extractor is simple in structure, convenient to operate and free of damaging acetabulums, difficulty in extracting the femoral head can be lowered effectively, operating time can be reduced, and smoothness in operation can be guaranteed.
Description
Technical field
The invention belongs to technical field of medical instruments, particularly relate to a kind of medical extraction apparatus for head of femur.Use when being mainly used in the operation of clinical orthopaedics artificial hip joint replacing.
Background technology
At present, artificial total hip arthroplasty and artificial femoral head replacement are the most effective means of the whole pathological changes in latter stage for the treatment of hip joint.In operation process, need the femoral head taking out pathological changes, implantable artificial hip joint.Because pathological changes femoral head is subject to surrounding soft tissue and ligament protection, add hypertrophy and sclerosis, in operation process, pathological changes femoral head is often difficult to take out.
In prior art, doctor uses that spiral type head extractor is similar is screwed into one piece of screw in cancellous bone of femoral head usually, then carrying handle takes out femoral head, in order to hold femoral head, prevents from rotating, need firmly to beat into head extractor, easily cause femoral head and acetabulum injuries, and coping screw is shallow, more weak to bone hold, easily deviate from during lift, make to get head failure.
Publication number is that the utility model patent of CN2256709Y discloses a kind of screw extraction apparatus for head of femur, and the resistance that the helical form head of its front end is screwed in osseous tissue is large, not enough to the hold of osseous tissue.Publication number is that the medical femoral head of CN103876810A gets head unit, describe in its description 0007 paragragh, " during use; the pointed tooth of barrel forward end is inserted femoral head surfaces, can obtain capital hold, prevent femoral head from rotating; " in practical operation, because capital sclerotin hardness is higher, being be difficult to pointed tooth to insert in femoral head surfaces separately not executing in stressed situation, namely cannot realizing.
Summary of the invention
The object of the present invention is to provide a kind of medical extraction apparatus for head of femur, stable femoral head can be played, improve the hold of head extractor, thus solve Problems existing in above-mentioned background technology.
The object of the invention is to be achieved through the following technical solutions: a kind of medical extraction apparatus for head of femur, comprise connecting rod, one end of connecting rod is handle, the other end is the tapping screw thread head with its one, it is characterized in that: on connecting rod, be provided with an auxiliary clamping fixed mechanism above tapping screw thread head; Described auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, a screwed hole is respectively provided with in the outer end of 4 bars of cross structure, also comprise the threaded lock screw of head coordinated with screwed hole, lock screw is screwed in femoral head by screwed hole and realizes holding femoral head preventing it from rotating.
During use, section of collum femoris is thrust at tapping screw thread head tip, pressurizeing screws in tapping screw thread head in spongy bone, then is screwed into femoral head by lock screw by the screwed hole in cross structure and prevents it from rotating, and then carrying handle can take out femoral head.
The invention has the beneficial effects as follows: this medical extraction apparatus for head of femur structure is simple, easy to operate, effectively can reduce femoral head and take out difficulty, reduce operating time, ensure that operation is carried out smoothly.
Accompanying drawing explanation
Fig. 1 is one embodiment of the present of invention structural representations;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is an alternative embodiment of the invention structural representation;
Fig. 4 is auxiliary clamping fixed mechanism structural representation.
Fig. 5 is auxiliary another embodiment schematic diagram of clamping fixed mechanism structure.
In figure: 1, tapping screw thread head; 3, hands handle; 2, connecting rod; 2.1, tapped through hole; 4, auxiliary clamping fixed mechanism; 4.1, installing hole; 4.2, screwed hole; 4.3, lock screw; 5, mounting pipe.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Embodiment 1
Embodiment as depicted in figs. 1 and 2, a kind of medical extraction apparatus for head of femur, comprises connecting rod 2, and one end of connecting rod is handle 3, and the other end is the tapping screw thread head 1 with its one, and connecting rod is provided with above tapping screw thread head an auxiliary clamping fixed mechanism 4; Auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, with connecting rod 2 in integrative-structure; The upper and lower end face of 4 bars of described auxiliary clamping fixed mechanism is flat; A screwed hole 4.2 is respectively provided with in the outer end of 4 bars of cross structure.Also comprise the threaded lock screw 4.3 coordinated with screwed hole 4.2, lock screw is screwed in femoral head by screwed hole 4.2 and realizes holding femoral head preventing it from rotating.
Embodiment 2
Another embodiment as shown in Figure 3 and Figure 4, a kind of medical extraction apparatus for head of femur comprises connecting rod 2, one end of connecting rod is handle 3, and the other end is the tapping screw thread head 1 with its one, and connecting rod 2 is provided with above tapping screw thread head an auxiliary clamping fixed mechanism 4; Described auxiliary clamping fixed mechanism and connecting rod 2 removably connect.Auxiliary clamping fixed mechanism is a flat cross structure, and its center has the installing hole 4.1 coordinated with connecting rod, and auxiliary clamping fixed mechanism 4 is set with by installing hole 4.1 and is fixed on connecting rod 2 and removably connects with connecting rod.
The present embodiment has at least 2 tapped through holes 2.1 be arranged above and below on described connecting rod 2 above tapping screw thread head, for regulating the upper-lower position of auxiliary clamping fixed mechanism on connecting rod 2.And 2 symmetrical screwed holes are had in the both sides of auxiliary clamping fixed mechanism symmetry, by the screw penetrating tapped through hole 2.1 and auxiliary clamping fixed mechanism both sides screwed hole on connecting rod, auxiliary clamping fixed mechanism is fixed on connecting rod 2.Also can on described connecting rod 2 above tapping screw thread head both sides respectively have at least 2 tapped blind holes be arranged above and below, auxiliary clamping fixed mechanism is fixed on connecting rod by the screw be screwed on screwed hole and connecting rod in tapped blind hole by auxiliary clamping fixed mechanism.
Above 2 embodiments are suitable for the situation that auxiliary clamping fixed mechanism thickness is greater than 5mm.
Embodiment 3
Another embodiment as shown in Figure 5, auxiliary clamping fixed mechanism is a flat cross structure, its center has the installing hole coordinated with connecting rod, installing hole there is the mounting pipe 5 that an internal diameter vertically upward coordinates with connecting rod, the tube wall of mounting pipe 5 has two symmetrical screwed holes, described connecting rod 2 has above tapping screw thread head at least 2 tapped through holes be arranged above and below, auxiliary clamping fixed mechanism is sleeved on connecting rod, by the screw penetrating tapped through hole on mounting pipe 5 upper screwed hole and connecting rod, auxiliary clamping fixed mechanism is fixed on connecting rod 2.
Claims (7)
1. a medical extraction apparatus for head of femur, comprises connecting rod, and one end of connecting rod is handle, and the other end is the tapping screw thread head with its one, it is characterized in that: on connecting rod, be provided with an auxiliary clamping fixed mechanism above tapping screw thread head; Described auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, a screwed hole is respectively provided with in the outer end of 4 bars of cross structure, also comprise the threaded lock screw coordinated with screwed hole, lock screw is screwed in femoral head by screwed hole and realizes holding femoral head preventing it from rotating.
2. the medical extraction apparatus for head of femur of one according to claim 1, is characterized in that: described auxiliary clamping fixed mechanism and connecting rod are integrative-structure.
3. the medical extraction apparatus for head of femur of one according to claim 1, it is characterized in that: described auxiliary clamping fixed mechanism is a flat cross structure, its center has the installing hole coordinated with connecting rod, and auxiliary clamping fixed mechanism is sleeved on and fixingly on connecting rod removably connects with connecting rod.
4. the medical extraction apparatus for head of femur of one according to claim 1, is characterized in that: the upper and lower end face of 4 bars of described auxiliary clamping fixed mechanism is flat.
5. the medical extraction apparatus for head of femur of one according to claim 3, it is characterized in that: on described connecting rod, above tapping screw thread head, have at least 2 tapped through holes be arranged above and below, and 2 symmetrical tapped through holes are had in the both sides of auxiliary clamping fixed mechanism symmetry, by the screw penetrating tapped through hole on tapped through hole and connecting rod on auxiliary clamping fixed mechanism, auxiliary clamping fixed mechanism is fixed on connecting rod.
6. the medical extraction apparatus for head of femur of one according to claim 3, it is characterized in that: on described connecting rod, above tapping screw thread head, both sides respectively have at least 2 tapped blind holes be arranged above and below, have 2 symmetrical tapped through holes in the both sides of auxiliary clamping fixed mechanism symmetry, auxiliary clamping fixed mechanism is by the screw that is screwed on tapped through hole and connecting rod in tapped blind hole and be fixed on connecting rod by auxiliary clamping fixed mechanism.
7. the medical extraction apparatus for head of femur of the one according to claim 1 or 3, it is characterized in that: described auxiliary clamping fixed mechanism is a flat cross structure, its center has the installing hole coordinated with connecting rod, installing hole there is the mounting pipe that an internal diameter vertically upward coordinates with connecting rod, the tube wall of mounting pipe has two symmetrical screwed holes, described connecting rod has above tapping screw thread head at least 2 tapped through holes be arranged above and below, auxiliary clamping fixed mechanism is sleeved on connecting rod, by the screw penetrating tapped through hole on mounting pipe upper screwed hole and connecting rod, auxiliary clamping fixed mechanism is fixed on connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410844657.6A CN104546034B (en) | 2014-12-30 | 2014-12-30 | A kind of medical extraction apparatus for head of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410844657.6A CN104546034B (en) | 2014-12-30 | 2014-12-30 | A kind of medical extraction apparatus for head of femur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104546034A true CN104546034A (en) | 2015-04-29 |
| CN104546034B CN104546034B (en) | 2017-07-25 |
Family
ID=53063864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410844657.6A Expired - Fee Related CN104546034B (en) | 2014-12-30 | 2014-12-30 | A kind of medical extraction apparatus for head of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104546034B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107260272A (en) * | 2017-06-26 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of medical bone withdrawing device |
| CN109938815A (en) * | 2019-04-09 | 2019-06-28 | 北京大学第三医院 | Femoral head extraction device |
| CN113081160A (en) * | 2021-04-14 | 2021-07-09 | 欧阳晓 | Orthopedic drilling guiding and aiming device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2256709Y (en) * | 1994-06-10 | 1997-06-25 | 陈晓明 | Screw extraction apparatus for head of femur |
| DE29710979U1 (en) * | 1997-06-24 | 1997-08-21 | Aesculap AG & Co. KG, 78532 Tuttlingen | Implant for fixing bone parts and tool for this implant |
| CN200970259Y (en) * | 2006-10-31 | 2007-11-07 | 陈保甲 | Medical femur take out device |
| CN201299640Y (en) * | 2008-12-14 | 2009-09-02 | 管锡普 | A novel bone nail extractor |
| US20110106186A1 (en) * | 2009-11-02 | 2011-05-05 | Nikolaj Wolfson | Bone fragment extraction |
| CN201889758U (en) * | 2010-12-07 | 2011-07-06 | 河南永昌飞天淀粉糖有限公司 | Exhaust fan impeller remover |
| CN204379326U (en) * | 2014-12-30 | 2015-06-10 | 欧阳晓 | A kind of medical femoral head withdrawing device |
-
2014
- 2014-12-30 CN CN201410844657.6A patent/CN104546034B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2256709Y (en) * | 1994-06-10 | 1997-06-25 | 陈晓明 | Screw extraction apparatus for head of femur |
| DE29710979U1 (en) * | 1997-06-24 | 1997-08-21 | Aesculap AG & Co. KG, 78532 Tuttlingen | Implant for fixing bone parts and tool for this implant |
| CN200970259Y (en) * | 2006-10-31 | 2007-11-07 | 陈保甲 | Medical femur take out device |
| CN201299640Y (en) * | 2008-12-14 | 2009-09-02 | 管锡普 | A novel bone nail extractor |
| US20110106186A1 (en) * | 2009-11-02 | 2011-05-05 | Nikolaj Wolfson | Bone fragment extraction |
| CN201889758U (en) * | 2010-12-07 | 2011-07-06 | 河南永昌飞天淀粉糖有限公司 | Exhaust fan impeller remover |
| CN204379326U (en) * | 2014-12-30 | 2015-06-10 | 欧阳晓 | A kind of medical femoral head withdrawing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107260272A (en) * | 2017-06-26 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of medical bone withdrawing device |
| CN109938815A (en) * | 2019-04-09 | 2019-06-28 | 北京大学第三医院 | Femoral head extraction device |
| CN109938815B (en) * | 2019-04-09 | 2023-10-27 | 北京爱康宜诚医疗器材有限公司 | Femoral head extraction device |
| CN113081160A (en) * | 2021-04-14 | 2021-07-09 | 欧阳晓 | Orthopedic drilling guiding and aiming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104546034B (en) | 2017-07-25 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170725 |