CN2478559Y - Ring-type composite internal fixator - Google Patents
Ring-type composite internal fixator Download PDFInfo
- Publication number
- CN2478559Y CN2478559Y CN 01219577 CN01219577U CN2478559Y CN 2478559 Y CN2478559 Y CN 2478559Y CN 01219577 CN01219577 CN 01219577 CN 01219577 U CN01219577 U CN 01219577U CN 2478559 Y CN2478559 Y CN 2478559Y
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- China
- Prior art keywords
- utility
- model
- annular
- tapered sleeve
- fracture
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Abstract
The utility model relates to the improvement of the former utility model patent, which has the patent number of 87214544.1. The improved utility model is an annular compound internal fixer, which is provided with single or two connected attached taper sleeve. The utility model is mainly used for treating the fracture of the long tubular bone, and is more particularly applicable to be used for treating inclined type fracture and spiral fracture. The utility model is provided with a worm and an annular rack, and one or two interconnected attached taper sleeve with antiskid convex cone is sleeved on the annular rack. The annular internal fixer can be used after being connected in series by rigid arterial plate. The fixer is provided with great fixing force, and great bending resistance, torsion resistant, anti vertical replacement and shearing resistance performances. No additional fixations are required after the operation, and the patient can move on the ground in the early stage. The utility model is propitious to the healing of the fracture, and can prevent the ankylosis.
Description
This utility model is a kind of treatment long tubular bone fracture that is applicable to, is specially adapted to treat the annular compound inner fixer with attached tapered sleeve of long bone oblique fracture and spiral fracture.Belong to clinical orthopaedics medical apparatus and instruments internal fixation device class.
Known to the inventor, at present domestic still do not have annular inner fixer of the same type, so the inventor was with 8 or seven years utility model patent (patent No.s: 87214544.1) improve.The improvement content is: 1, attached tapered sleeve is pasted original two the triangle convex cones of bone surface and all change a triangle convex cone into; Because convex cone quantity changes one on the attached tapered sleeve, the form that the convex cone shape triangular in shape on original adjacent attached tapered sleeve is arranged changes into and is the wire spread pattern.2, attached tapered sleeve has increased by two combination type types of service that attached tapered sleeve is connected together by the rigid material plate except that keeping original single formula type of service, and the attached tapered sleeve of two kinds of forms can mix use.The length of rigid material plate can be three sizes, and the width of width and annular rack equates.
The purpose of this utility model is strong, the anatomical reduction rate height of a kind of bed knife of design, and bending resistance, antitorque, resisting longitudinal displacement, shear strength are big, and little and postoperative does not need the annular compound inner fixer of external fixation to the cortical bone damage.
This utility model is made up of worm screw, annular rack, attached tapered sleeve.It can following principle work, one end of annular rack is fixed together by fixed mount and worm screw, has screw thread on the tooth bar other end outer surface, on annular rack, be set with 5-9 single formula and knockdown attached tapered sleeve, the trepanning of attached tapered sleeve has the size that is complementary with the tooth bar cross section, has the triangle convex cone at the subsides bone surface of attached tapered sleeve.When this holder is installed, only need the turn worm screw can tighten up tooth bar, the triangle convex cone on the attached tapered sleeve thrusts in the cortical bone simultaneously.Therefore, this inner fixer can prevent fracture site horizontal torsion and length travel.And the triangle convex cone on the attached tapered sleeve its prevent the effect that holder self slides in addition.This triangle convex cone also can replace with the protrusion of other form.
Below in conjunction with description of drawings embodiment:
Accompanying drawing 1 is an annular compound inner fixer sketch map.
Accompanying drawing 2 is sketch maps that serial connection is used this inner fixer.
Annular compound inner fixer as shown in Figure 1, wherein worm screw 1 is fixed by a fixed mount 2 and an end of annular rack 3, is set with attached tapered sleeve 5. on the annular rack 3
1, 5.
2, the style of attached tapered sleeve and quantity can be selected 5-9 for use according to the diameter of fractured bones, and not producing slides is advisable to be close to each other after fixedly finishing.On the other end outer surface of annular rack 3, has screw thread 4.Attached tapered sleeve 5.
1, 5.
2The subsides bone surface on have triangle convex cone 6, the convex cone on this triangle convex cone and other the attached tapered sleeve is arranged in a linear.
Shown in the accompanying drawing 2 is the serial connection occupation mode of this annular compound inner fixer.By rigid material plate 7 two annular compound inner fixers are connected, the length and width of rigid material plate can be made into several forms, and with the distance between the inner fixer that adapts to serial connection, make at the two ends of rigid material plate has and the be complementary trepanning of size of tooth bar cross section.During installation the rigid material plate is placed between the attached tapered sleeve, element 7 major axis are parallel with the bone major axis, and the mode of element 7 serial connections can be according to fracture line length, and 2-4 of serial connection is corresponding in twos.
Element 7 for serial connection usefulness has screw hole 8, and the inner surface of screw hole 8 has screw thread.During installation, add press fit by respective screws hole and screw on the corresponding elements 7 in twos with screw rod.
Also can adopt three for the mode of the element 7 that is connected in series usefulness, space 120 degree with two annular compound inner fixers connections.Fix without screw rod.
This annular compound inner fixer adopts orthopaedics to make with rustless steel or titanium alloy T i-6AL-4V.
Claims (6)
1, a kind of have that snail does, the annular compound inner fixer of annular rack, it is characterized in that being set with on the annular rack attached tapered sleeve.
2, the attached tapered sleeve of annular compound inner fixer as claimed in claim 1 is characterized in that having anti-slip convex cone on the inner surface of attached tapered sleeve.
3, the anti-slip convex cone on the attached tapered sleeve of annular compound inner fixer as claimed in claim 2 is characterized in that the protrusion that this anti-slip convex cone is triangular pyramidal or other form.
4, the attached tapered sleeve of annular compound inner fixer as claimed in claim 1, its can be single or and two have each other that rigidly connected attached tapered sleeve uses simultaneously.
5, the annular compound inner fixer with attached tapered sleeve as claimed in claim 1 is characterized in that this inner fixer can a plurality of serial connections use, and connects with the rigid material plate each other.
6, annular compound inner fixer as claimed in claim 1, the locking function of its worm screw also can be otherwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219577 CN2478559Y (en) | 2001-04-17 | 2001-04-17 | Ring-type composite internal fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219577 CN2478559Y (en) | 2001-04-17 | 2001-04-17 | Ring-type composite internal fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2478559Y true CN2478559Y (en) | 2002-02-27 |
Family
ID=33637364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01219577 Expired - Fee Related CN2478559Y (en) | 2001-04-17 | 2001-04-17 | Ring-type composite internal fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2478559Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306911C (en) * | 2004-12-30 | 2007-03-28 | 潘滔 | Memory alloy self-locking type holding ring |
-
2001
- 2001-04-17 CN CN 01219577 patent/CN2478559Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306911C (en) * | 2004-12-30 | 2007-03-28 | 潘滔 | Memory alloy self-locking type holding ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhou Zhijian Document name: Notice of registration |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |