CN206979558U - A kind of osseous tunnel expander - Google Patents
A kind of osseous tunnel expander Download PDFInfo
- Publication number
- CN206979558U CN206979558U CN201720086674.7U CN201720086674U CN206979558U CN 206979558 U CN206979558 U CN 206979558U CN 201720086674 U CN201720086674 U CN 201720086674U CN 206979558 U CN206979558 U CN 206979558U
- Authority
- CN
- China
- Prior art keywords
- frustum
- steel wire
- flexible steel
- diameter
- bone tunnel
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 210000000988 bone and bone Anatomy 0.000 claims description 58
- 210000001264 anterior cruciate ligament Anatomy 0.000 claims description 7
- 210000002967 posterior cruciate ligament Anatomy 0.000 claims description 7
- 210000003041 ligament Anatomy 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 206010065687 Bone loss Diseases 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 6
- 230000000399 orthopedic effect Effects 0.000 description 2
- 240000000233 Melia azedarach Species 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
A kind of osseous tunnel expander,It includes a flexible steel wire,It is identical that multiple cone angles increased successively are sequentially set with the flexible steel wire,It is 35 ° of frustum,The distance between two adjacent described frustums are 3 8mm,The stub end diameter of each frustum is bigger 1mm than small head end diameter,In two adjacent frustums,The stub end diameter of the small frustum is bigger 0.3mm than the small head end diameter of the big frustum,On the traffic direction of the flexible steel wire,First frustum,It that is to say that the small head end diameter of the frustum of minimum is identical with the diameter of the flexible steel wire,Last described frustum,It that is to say that the stub end diameter of the frustum of maximum is identical with osseous tunnel final diameter,Length of the flexible steel wire in the extension of the small head end of the frustum of minimum is more than 10cm.A kind of osseous tunnel expander provided by the utility model, it is easy to operate, can Rapid Expansion osseous tunnel, and will not cause bone loss in process of expansion.
Description
Technical Field
The utility model relates to the technical field of medical operation instruments, in particular to a bone tunnel expander used in orthopedic operations.
Background
After anterior/posterior cruciate ligament reconstruction, the bone tunnel enlargement can lead to loosening of the transplanted tendon. The definition of bone tunnel enlargement is the apparent widening of femoral and tibial bone tunnel widths on the X-ray slice after anterior/posterior cruciate ligament reconstruction. The gradual expansion of the bone tunnel using a bone tunnel expander may prevent expansion of the bone tunnel following anterior/posterior cruciate ligament reconstruction.
The existing bone tunnel expander is generally composed of a threaded metal tip, a metal expansion rod and a handle, and the bone tunnel expanders with different diameters are combined into a set. In the operation, firstly, a bone tunnel with a smaller diameter is drilled on a bone by an electric drill, then a metal guide wire is inserted into the bone tunnel, then the bone tunnel expander with the threaded tip is screwed into the bone tunnel along the metal guide wire, and the metal expansion rod following behind the tip can gradually expand the bone tunnel formed by cancellous bones, so that the bone tunnel can be fully expanded and compressed. However, since the bone tunnel needs to be gradually enlarged from small to large, the bone tunnel dilator with the gradually increased diameter needs to be frequently replaced, the process that the bone tunnel dilator is sleeved with the metal guide wire and then screwed in is time-consuming and labor-consuming, the operation time can be obviously prolonged, and as the cancellous bone of the bone tunnel is easy to bleed, the method can obviously increase the blood loss of the patient along with the extension of the operation time. In addition, during screwing the dilator into the bone tunnel, the threaded tip housing pushes a part of the cancellous bone to the far end of the bone tunnel, causing the loss of bone mass.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the present invention is to provide a bone tunnel expander to reduce or avoid the aforementioned problems.
In order to solve the above technical problems, the present invention provides a bone tunnel expander for expanding a bone tunnel for penetrating a ligament in anterior/posterior cruciate ligament reconstruction, comprising a flexible steel wire, wherein a plurality of frustums with the same taper angle as each other, which are 3 to 5 degrees, are sequentially arranged on the flexible steel wire, the distance between two adjacent frustums is 3 to 8mm, the diameter of the large end of each frustum is 1mm larger than that of the small end, the diameter of the large end of each small frustum is 0.3mm larger than that of the small end of each large frustum in two adjacent frustums, the diameter of the small end of each small frustum is the same as that of the flexible steel wire, and the diameter of the large end of each last frustum, which is the largest, is the same as that of the final diameter of the bone tunnel, the length of the extension part of the flexible steel wire at the smallest small end of the frustum is more than 10 cm.
The utility model provides a bone tunnel expander, convenient operation can expand the bone tunnel fast, and can not cause the bone volume to lose at the expansion process.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic structural diagram of a bone tunnel dilator according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
fig. 1 is a schematic view of a structure principle of a bone tunnel expander according to a specific embodiment of the present invention, in which the direction of arrow a indicates a running direction of the bone tunnel expander in use, as shown in fig. 1, the present invention provides a bone tunnel expander for expanding a bone tunnel for penetrating a ligament in anterior/posterior cruciate ligament reconstruction, which includes a flexible steel wire 10, the flexible steel wire 10 is sequentially provided with a plurality of cones α which are the same and are 3-5 ° frustums 11, two adjacent frustums 11 have a distance D1 of 3-8mm, each frustum 11 has a larger diameter D1 than a smaller diameter D2 by 1mm, in two adjacent frustums 11, i.e., the frustums 11, the smaller diameter D1 of the frustum 11 is larger than the smaller diameter D2 of the frustum by 0.3mm, in the running direction of the flexible steel wire 10 (in fig. 1, the first frustum 11 is the same as the second frustum 11, the last frustum 11 is the largest diameter of the flexible steel wire 10, and the last frustum 11 is the largest diameter of the flexible steel wire 10 is the same as the last frustum 11, and the last frustum 11 is the diameter of the same as the diameter of the flexible steel wire 10, and the last frustum 11 is the length of the largest diameter of the flexible steel wire 10.
When using the utility model provides a bone tunnel expander, at first will flexible steel wire 10 is at the minimum the extension of the little head end of frustum 11 penetrates the bone tunnel that is drilled out by instruments such as kirschner wire on the traffic direction (the direction that arrow A marked in figure 1) of flexible steel wire 10, minimum frustum 11 enters into at first the bone tunnel, then each frustum 11 gets into in proper order the bone tunnel just so can oppress gradually the bone tunnel that is drilled out by instruments such as kirschner wire, make the bone tunnel reaches final dimension. Because the utility model provides a bone tunnel expander is through the different diameter scope of gradual increase frustum 11 expands the bone tunnel, and each frustum 11 has smooth conical, consequently can not lose bone volume basically in the in-process of expansion to the expansion bone tunnel that can be very convenient accurate is to preset's size.
Referring to the 'anatomy research of diameter of cruciate ligament reconstruction bone canal' written by cheng lian xu institute of orthopedics in the Qinghua ChangG Hospital in Beijing, in anterior/posterior cruciate ligament reconstruction, the final bone tunnel is usually 5-9mm, so according to the present invention, a plurality of flexible steel wires 10 can be prepared, each flexible steel wire 10 is the largest, the diameter range of the large head end of the frustum 11 can be 5-9mm, and thus, the flexible steel wire can be properly selected for bone tunnel expansion in an operation.
The length of the extension part of the flexible steel wire 10 at the smallest small head end of the frustum 11 is more than 10cm, so that medical staff can conveniently pull the flexible steel wire 10 by using a tractor and other tools, and the operation efficiency is improved.
The utility model provides a bone tunnel expander, convenient operation can expand the bone tunnel fast, and can not cause the bone volume to lose at the expansion process.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (1)
1. A bone tunnel expander is used for expanding a bone tunnel for penetrating into ligament in anterior/posterior cruciate ligament reconstruction, and comprises a flexible steel wire, wherein a plurality of conical tables with the same sequentially increasing cone angle and 3-5 degrees are sequentially arranged on the flexible steel wire, the distance between every two adjacent conical tables is 3-8mm, the diameter of the large head end of each conical table is 1mm larger than that of the small head end, the diameter of the large head end of each conical table in two adjacent conical tables is 0.3mm larger than that of the small head end of each conical table in the two adjacent conical tables, the diameter of the small head end of the first conical table, namely the smallest conical table, is the same as that of the flexible steel wire in the running direction of the flexible steel wire, the diameter of the large head end of the last conical table, namely the largest conical table, is the same as that of the final diameter of the bone tunnel, the length of the extension part of the flexible steel wire at the smallest small end of the frustum is more than 10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720086674.7U CN206979558U (en) | 2017-01-20 | 2017-01-20 | A kind of osseous tunnel expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720086674.7U CN206979558U (en) | 2017-01-20 | 2017-01-20 | A kind of osseous tunnel expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206979558U true CN206979558U (en) | 2018-02-09 |
Family
ID=61422341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720086674.7U Expired - Fee Related CN206979558U (en) | 2017-01-20 | 2017-01-20 | A kind of osseous tunnel expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206979558U (en) |
-
2017
- 2017-01-20 CN CN201720086674.7U patent/CN206979558U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103735306B (en) | A kind of overhead brace formula pressurization multipurpose guider | |
| WO2015130609A3 (en) | Method and apparatus for use of a compressing plate | |
| CN104825217A (en) | Double-nail-hook metaphysis pressurizing fixing device | |
| CN104173097A (en) | Intramedullary nail | |
| CN207118919U (en) | A kind of device for posterior cruciate ligament reconstruction operation | |
| CN206979558U (en) | A kind of osseous tunnel expander | |
| AU2015217404A1 (en) | Flexible bone dilator | |
| CN204219005U (en) | A kind of multi-functional rib triangular pyramid | |
| CN203138650U (en) | Improved bone marrow core decompression surgical instrument for femoral head necrosis | |
| CN201094617Y (en) | Lumbar anterior approach micro-wound percutaneous interbody fusion operation auxiliary casing tube component | |
| CN100544680C (en) | A kind of dilating expansion intramedullary nail | |
| CN205198111U (en) | Get bone device | |
| CN107518941A (en) | A kind of soft tissue expander | |
| CN106618708A (en) | Tibial intramedullary nail opening locator | |
| CN203953725U (en) | A kind of band flank holdfast | |
| RU177840U1 (en) | Drill guide for osteotomy of tubular bones | |
| CN108903988B (en) | Surgical incision conformal elastic traction device | |
| RU154067U1 (en) | DEVICE FOR COMBINED OSTEOSYNTHESIS | |
| CN201822898U (en) | Combined apparatus for installing endophyte in vertebral body through vertebral pedicle | |
| JP2017515533A (en) | Extended auxiliary machine cutting head | |
| RU187344U1 (en) | Device for intraosseous osteosynthesis of long tubular bones | |
| CN205083590U (en) | Annular kneecap restorer | |
| CN217219172U (en) | Internal thread forcing screw device | |
| CN202619769U (en) | Medical reducing drill bit | |
| RU147769U1 (en) | DEVICE FOR REPOSITIONAL FIXATION OF BONE FRAGMENTS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20200120 |