CN201205286Y - Tack hole magnetic-force positioning device - Google Patents
Tack hole magnetic-force positioning device Download PDFInfo
- Publication number
- CN201205286Y CN201205286Y CNU2008200231792U CN200820023179U CN201205286Y CN 201205286 Y CN201205286 Y CN 201205286Y CN U2008200231792 U CNU2008200231792 U CN U2008200231792U CN 200820023179 U CN200820023179 U CN 200820023179U CN 201205286 Y CN201205286 Y CN 201205286Y
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- indicator
- magnetic force
- magnet
- hole
- swing arm
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Abstract
The utility model discloses a pinhole magnetic positioning device which comprises a magnetic probe and a detection indicator; the magnetic probe comprises a main body inserted into the bottom side of a pinhole of a bone setting material; a magnet is fixed on the head of the main body and arrange on the bottom side of the pinhole; the magnet consists of at least two magnets which are fixed together with like magnetic poles close to each other; the detection indicator comprises an indicator shell made of non-magnetic conductive material; the indicator shell is provided with a swing arm; the free end of the swing arm is fixedly provided with a magnetic conductive material block, and the other end is provided with a position indicator.
Description
Technical field
This utility model relates to a kind of medical apparatus.
Background technology
At present, all kinds of synthetism materials such as intramedullary pin are widely applied in fracture operation.For alleviating patient's misery, the treatment of bone surgery changes to the micro-wound surgical operation treatment gradually.Because intramedullary pin places in the medullary cavity, nail hole naked eyes can't be determined.In the operation process intramedullary pin is implanted in the medullary cavity of folding bone, respectively with the screw locking, played the effect of fixing fracture at near-end and far-end, this Minimally Invasive Surgery is less to patient's damage, good fixing effect, help the recovery of patient's postoperative.This Minimally Invasive Surgery requires to finish the locking of intramedullary pin under closure state, locking for proximal orifice can be finished by means of the mechanical sight that intramedullary pin manufacturer provides, and remote stomidium is because far away apart from proximal orifice, and intramedullary pin produces certain crooked deformation because of adapting to different skeletons after inserting medullary cavity, so the locking of remote stomidium is the difficult point of carrying out this operation.The doctor only by means of the perspective of C type arm X-ray, finishes intra medullary nail far-end locking in traditional operation, and doctor long, that participate in is many for operating time, and the doctor can be subjected to the irradiation of X-ray for a long time.Electric hand drill repeatedly passes in and out medullary cavity in addition, has greatly increased patient's misery.
Utilize auxiliary stand to perform the operation, promptly fix a support, fix the distal lockhole that a sight hole is aimed at intramedullary pin at the end of support at the near-end of intramedullary pin.The doctor is by this hole centering lockhole.But, aim at support that often precision is not enough because intramedullary pin generally all has deformation in squeezing into the process of suffering from bone.But mechanical type locking sight is generally installed complexity, and deformation takes place easily, causes sight and intramedullary pin position relation to change, and is difficult to find accurately the position in far-end nail hole, has increased the difficulty and the additional injuries of operation.Computer navigation system under the optical alignment needs large-scale Computer Image Processing hardware, software and special-purpose operating theater instruments, needs engineers and technicians' guidance, has limited doctor's subjective initiative, and has cost an arm and a leg, and is difficult to promote.
The utility model content
Technical problem to be solved in the utility model provides a kind of nail hole magnetic force positioner of simple in structure, accurate positioning.
For solving the problems of the technologies described above, the technical solution of the utility model is: nail hole magnetic force positioner, comprise the magnetic force probe and survey indicator, described magnetic force probe comprises the probe bodies that is inserted into synthetism material nail hole basal surface position, the head of described probe bodies is fixed with Magnet, and described Magnet is positioned at nail bottom surface, hole, and described Magnet is that at least two blocks of Magnet and the magnetic pole of the same name that are fixed together are close; Described detection indicator comprises the indicator housing of non-magnet material, in the described indicator housing swing arm is installed, and the free end of described swing arm is installed with the permeability magnetic material piece, and the other end of described swing arm is provided with position indicator.
As a kind of improvement, described probe bodies is provided with the scale that length is inserted in expression.
As a kind of improvement, described permeability magnetic material piece is an iron block.
As a kind of improvement, described position indicator comprises the pointer that is fixed in the described swing arm, and is installed in the graduated disc on the described indicator housing.
As further improvement, the synthetism material is an intramedullary pin.
Owing to adopted technique scheme, nail hole magnetic force positioner, comprise the magnetic force probe and survey indicator, described magnetic force probe comprises the probe bodies that is inserted into synthetism material nail hole basal surface position, the head of described probe bodies is fixed with Magnet, and described Magnet is positioned at nail bottom surface, hole, and described Magnet is that the two blocks of Magnet and the magnetic pole of the same name that are fixed together are close; Described detection indicator comprises the indicator housing of non-magnet material, in the described indicator housing swing arm is installed, and the free end of described swing arm is installed with the permeability magnetic material piece, and the other end of described swing arm is provided with position indicator; The Magnet of described probe bodies head is that at least two blocks of Magnet and the magnetic pole of the same name that are fixed together are close, and when the permeability magnetic material piece in the described swing arm was positioned at polylith magnetic piece middle, described swing arm could keep balance, surveys indicator and therefore points to the tram; Near the tram in nail hole, described swing arm presents the promptly right state in a non-left side, so just is easy to centering nail hole site, thereby has improved the accuracy of operation, greatly reduces patient's misery.
Description of drawings
Fig. 1 is the structural representation of this utility model embodiment, is that A-A among Fig. 2 is to cutaway view;
Fig. 2 is the structure principle chart of this utility model embodiment when using.
The specific embodiment
As shown in Figure 1 and Figure 2, nail hole magnetic force positioner comprises the magnetic force probe and surveys indicator that described magnetic force probe comprises the probe bodies 2 that is inserted into intramedullary pin 1 nail hole basal surface position, described nail hole is in the far-end locking hole, and as the sight hole of other remote stomidium; Described probe bodies 2 is provided with the scale 23 that length is inserted in expression, this scale can guarantee that probe inserts that the head of probe is positioned at the accurate position of setting sight hole behind the intramedullary pin, the head of described probe bodies 2 is fixed with Magnet 21,22, and described Magnet 21,22 is positioned at nail bottom surface, hole, and described Magnet 21,22 is close for the two blocks of Magnet and the magnetic pole of the same name that are fixed together; Described detection indicator comprises the indicator housing 3 of non-magnet material, adopts Al-alloy casing in the present embodiment, guarantees tram that swing arm 41 can the described Magnet 21,22 of perception and not disturbed; In the described indicator housing 3 swing arm 41 is installed, the free end of described swing arm 41 is installed with permeability magnetic material piece 42, and described permeability magnetic material piece 42 is the ferrum piece; The other end of described swing arm 41 is provided with position indicator, and described position indicator comprises the pointer 43 that is fixed in the described swing arm 41, and the graduated disc 31 that is installed on the described indicator housing 3 represents to determine to survey the tram whether indicator points to the nail hole.
The using method of present embodiment is as follows:
The intramedullary pin 1 of selected suitable length and external diameter is installed on the auxiliary stand 5, in the external basic adjustment that performs lockhole and magnetic force probe earlier, determine the length that the magnetic force probe inserts, thereby determine to follow closely the distance of hole along the intramedullary pin length direction as the far-end of sight hole, the intramedullary pin 1 that will be installed in then on the auxiliary stand 5 inserts, insert the magnetic force probe according to definite length, to be installed on the auxiliary stand 5 and survey indicator near skin surface, adjust auxiliary stand 5 ends, make pointed " 0 " the some position of surveying indicator, centering finishes, and utilizes drill bit to get through other remote stomidium then, and locking respectively.
Only be to utilize intramedullary pin for example more than to description of the present utility model, certainly the synthetism material also can be blade plate, the contact surface of described blade plate and bone is provided with the groove that inserts for the magnetic force probe, inserts the bottom in nail hole to guarantee the magnetic force probe, provides convenience thereby perform the operation for Wicresoft's synthetism.
Claims (5)
1. follow closely hole magnetic force positioner, comprise the magnetic force probe and survey indicator, it is characterized in that: described magnetic force probe comprises the probe bodies (2) that is inserted into synthetism material (1) nail hole basal surface position, the head of described probe bodies (2) is fixed with Magnet (21,22), and described Magnet (21,22) is positioned at nail bottom surface, hole, and described Magnet (21,22) is close at least two blocks of Magnet and the magnetic pole of the same name that are fixed together; Described detection indicator comprises the indicator housing (3) of non-magnet material, swing arm (41) is installed in the described indicator housing (3), the free end of described swing arm (41) is installed with permeability magnetic material piece (42), and the other end of described swing arm (41) is provided with position indicator.
2. nail as claimed in claim 1 hole magnetic force positioner is characterized in that: described probe bodies (2) is provided with the scale (23) that length is inserted in expression.
3. nail as claimed in claim 1 hole magnetic force positioner is characterized in that: described permeability magnetic material piece (42) is an iron block.
4. nail as claimed in claim 1 hole magnetic force positioner is characterized in that: described position indicator comprises the pointer (43) that is fixed in the described swing arm (41), and is installed in the graduated disc (31) on the described indicator housing (3).
5. as claim 1,2,3 or 4 described nail hole magnetic force positioners, it is characterized in that: described synthetism material (1) is an intramedullary pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200231792U CN201205286Y (en) | 2008-05-29 | 2008-05-29 | Tack hole magnetic-force positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200231792U CN201205286Y (en) | 2008-05-29 | 2008-05-29 | Tack hole magnetic-force positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201205286Y true CN201205286Y (en) | 2009-03-11 |
Family
ID=40464355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200231792U Expired - Fee Related CN201205286Y (en) | 2008-05-29 | 2008-05-29 | Tack hole magnetic-force positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201205286Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015164689A1 (en) * | 2014-04-25 | 2015-10-29 | DePuy Synthes Products, Inc. | Aiming device for distal locking of intramedullary nails and methods of use |
| CN106344144A (en) * | 2016-10-28 | 2017-01-25 | 孙丽君 | Medical compass position indicator |
-
2008
- 2008-05-29 CN CNU2008200231792U patent/CN201205286Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015164689A1 (en) * | 2014-04-25 | 2015-10-29 | DePuy Synthes Products, Inc. | Aiming device for distal locking of intramedullary nails and methods of use |
| CN106456050A (en) * | 2014-04-25 | 2017-02-22 | 德普伊新特斯产品公司 | Aiming device for distal locking of intramedullary nails and methods of use |
| TWI678184B (en) * | 2014-04-25 | 2019-12-01 | 德派信迪思產品公司 | Aiming device system |
| CN106344144A (en) * | 2016-10-28 | 2017-01-25 | 孙丽君 | Medical compass position indicator |
| CN106344144B (en) * | 2016-10-28 | 2019-05-07 | 赵中海 | A kind of medical compass position indicator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20120529 |