CN204581368U - A kind of Micronervus retractor - Google Patents
A kind of Micronervus retractor Download PDFInfo
- Publication number
- CN204581368U CN204581368U CN201520112409.2U CN201520112409U CN204581368U CN 204581368 U CN204581368 U CN 204581368U CN 201520112409 U CN201520112409 U CN 201520112409U CN 204581368 U CN204581368 U CN 204581368U
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- arm
- micronervus
- torque arm
- retractor
- drawing arm
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Abstract
This utility model relates to technical field of medical instruments, specifically a kind of Micronervus retractor, two torque arm comprising helical form tension ring and stretch out from screwed tension circle two ends respectively, torque arm connect drawing arm, be provided with limiting section between two torque arm; Drawing arm is sector structure, and drawing arm is near-end near one end of torque arm, and the one end away from torque arm is far-end, and drawing arm is stretched to the flat of far-end gradually by the lath-shaped of near-end.The beneficial effects of the utility model are that the structure that drawing arm near-end is lath-shaped, far-end is flat can increase contact area further, and reduce the stretch injury to cerebral tissue, the limiting section between two torque arm limits the opening width of drawing arm; The anti-skidding groove face of lateral surface directly contacts with tissue, and can effectively prevent nerve retractor slippage, the dumb light shiny surface of medial surface can reduce the reflective stimulation to operator eyes in operation process, can not have an impact to the enforcement of operation.
Description
Technical field
This utility model relates to technical field of medical instruments, specifically a kind of Micronervus retractor retracting function for having limit excessive during micro-micro-wound surgical operation, preventing from accidentally injuring cerebral tissue.
Background technology
Keyhole approach is diseased region, character and local anatomic characteristic according to the concrete imaging examination of patient, accurately locates and contact pathological changes, improve Wicresoft's theory deriving technology of postoperative survival quality while reducing normal tissue wound as far as possible.
Keyhole approach technology experienced by and initial makes light inject intracranial deep to perform the operation with the bore hole guaranteed surgical doctor and assistant and can see intracranial deep structure clearly by expanding operative incision, change into gradually and adopt spectacle operating loupe, operating microscope, developing deeply becomes to adopt endoscopic technique, no matter take any keyhole approach technology, abundant, the rational exposure of operative region is basic requirement.Often adopt the apparatuses such as snakelike self-retaining retractor, HardyShi dilator, brain spatula to assist clinically and retract cerebral tissue to provide necessary operation technique space.For showing shallow, that volume is larger pathological changes, surgical exposure is not often problem; But for Intracerebral lesion, especially basis cranii Deep Lesions, such as transnasal endoscopic skull base surgery, because opereating specification is less, the required depth of field is comparatively large, if adopt conventional exposure chamber as brain spatula, usually stops visual area, even cannot arrive operative region.
At present, the normal Micronervus retractor that adopts retracts cerebral tissue.According to the space size that the degree of depth and the needs of intracranial lesion expose, select suitable Micronervus retractor, under the visual field of microscope or endoscope, this nerve retractor is closed with sword bayonet type aneurysm clamp holder folder, making Micronervus retractor be in closure state, being convenient to the operation path by having set up; Arrive after diseased region, release Micronervus retractor, retract tissue that pathological changes closes on to reach the object exposing pathological changes, now take out aneurysm clamp, carry out excision pathological changes; After having performed the operation, again stretch into sword bayonet type aneurysm clamp holder folder and close Micronervus retractor, take out Micronervus retractor.But the degree that retracts of Micronervus retractor is difficult to control, once retract excessively, often impacts operation.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and retract function for having limit excessive during micro-micro-wound surgical operation, prevents from accidentally injuring the Micronervus retractor of cerebral tissue.
In order to achieve the above object, this utility model provides a kind of Micronervus retractor, two torque arm comprising helical form tension ring and stretch out from screwed tension circle two ends respectively, and described torque arm connects drawing arm, is provided with limiting section between two torque arm;
Described drawing arm is sector structure, and drawing arm is near-end near one end of torque arm, and the one end away from torque arm is far-end, and described drawing arm is stretched to the flat of far-end gradually by the lath-shaped of near-end.
Preferably, described torque arm forms bending structure to inner side after stretching out tension ring.
Preferably, described limiting section comprises the positive stop strip be coupling respectively in two torque arm, and two positive stop strips are hinged.
Preferably, the lateral surface of described drawing arm is provided with anti-skidding groove face, and the medial surface of drawing arm is provided with dumb light shiny surface.
Preferably, the distal tip of described drawing arm is arc-shaped structure.
Preferably, the diameter of described helical form tension ring is 2 ~ 5mm, preferred 3mm.
Preferably, the length of described torque arm is 4 ~ 8mm, preferred 6mm.
Preferably, the length of described drawing arm is 10 ~ 25mm, preferred 15mm.
Preferably, the width of described drawing arm is 2 ~ 6mm, preferred 4mm.
The beneficial effects of the utility model are, structure is simple, easy to operate, safe and reliable, while minimizing draw tissue, add the working place of operative doctor; The size of the diameter of helical form tension ring and the aneurysm clamp of standard is basically identical, and can be operated by various aneurysm clamp holder, without the need to otherwise designed operating apparatus, versatility is better; The structure that drawing arm near-end is lath-shaped, far-end is flat can increase contact area further, reduce the stretch injury to cerebral tissue, and can need according to actual operation the shape being designed to drawing arm have different bending angle, width and length, carry out the operation designing of individuation in light of the circumstances; Article two, the limiting section between torque arm limits the opening width of drawing arm, and make its maximum opening width be no more than 45 °, drawing arm head end distance remains between 10 ~ 25mm, retracts support force between 150 ~ 300g; The anti-skidding groove face of lateral surface directly contacts with tissue, and can effectively prevent nerve retractor slippage, good fixing effect, the dumb light shiny surface of medial surface can reduce the reflective stimulation to operator eyes in operation process, can not have an impact to the enforcement of operation; The distal tip of drawing arm is arc-shaped structure, can effectively prevent from accidentally injuring cerebral tissue; Neural micro-retractor entirety selects titanium alloy to make, and has good diamagnetism, and in art, row nuclear magnetic resonance scanning does not still affect picture structure and is subjected to displacement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is using state figure of the present utility model.
Wherein:
1-helical form tension ring 2-torque arm 3-drawing arm
4-limiting section 5-gun-type aneurysm clamp holder
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
Embodiment 1:
A kind of Micronervus retractor as shown in Fig. 1 ~ Fig. 2, two torque arm 2 comprising helical form tension ring 1 and stretch out from screwed tension circle 1 two ends respectively, the diameter of helical form tension ring 1 is 3mm, the size of the diameter of helical form tension ring 1 and the aneurysm clamp of standard is basically identical, can be operated by various aneurysm clamp holder, without the need to otherwise designed operating apparatus, versatility is better.Described torque arm 2 forms bending structure to inner side after stretching out tension ring 1, and the length of torque arm 2 is 6mm.
Described torque arm 2 connects drawing arm 3, and described drawing arm 3 is sector structure, and drawing arm 3 is near-end near one end of torque arm 2, and the one end away from torque arm 2 is far-end, and described drawing arm 3 is stretched to the flat of far-end gradually by the lath-shaped of near-end.The length of described drawing arm 3 is 15mm.The structure that drawing arm 3 near-end is lath-shaped, far-end is flat can increase contact area further, reduce the stretch injury to cerebral tissue, and can need according to actual operation the shape being designed to drawing arm 3 to have different bending angle, width and length, carry out the operation designing of individuation in light of the circumstances.
Be provided with limiting section 4 between two described torque arm 2, limiting section 4 comprises the positive stop strip be coupling respectively in two torque arm 2, and two positive stop strips are hinged.When nerve retractor is clamped by gun-type aneurysm clamp holder 5 or other instruments, Micronervus retractor closes, and now positive stop strip is in rounding state; After arriving diseased region, Micronervus retractor is released, drawing arm 3 opens to reach the object exposing pathological changes, now the positive stop strip of limiting section 4 limits the maximum stretching degree of nerve retractor, its maximum opening width is made to be no more than 45 °, drawing arm 3 head end distance remains on 10mm ~ 25mm, and support force is between 150g ~ 300g.
The lateral surface of described drawing arm 3 is provided with anti-skidding groove face, and the medial surface of drawing arm 3 is provided with dumb light shiny surface.The anti-skidding groove face of lateral surface directly contacts with tissue, can effectively prevent nerve retractor slippage, good fixing effect; The dumb light shiny surface of medial surface can reduce the reflective stimulation to operator eyes in operation process, can not have an impact to the enforcement of operation.
The distal tip of described drawing arm 3 is arc-shaped structure, can effectively prevent from accidentally injuring cerebral tissue.
Described Micronervus retractor is made up of titanium alloy, has good diamagnetism, and in art, row nuclear magnetic resonance scanning does not still affect picture structure and is subjected to displacement.
Actual example:
For under nerve endoscope through maxillary sinus-through Muller flesh superior orbital fissure decompression, first should routine operation step, the rear wall of worn part maxillary sinus and roof, find and retract muller flesh, prolongs eye socket lower wall and be upwards separated.Select suitable Micronervus retractor, under the visual field of neuroendoscopy, this retractor is closed up with gun-type aneurysm clamp holder 5, Micronervus retractor is made to be in closure state so that arrive diseased region by the operation path set up, between adipose body of orbit outer wall and eye socket lower wall, both sides place a Micronervus retractor respectively, as position and angle undesirable, adjust the position of this Micronervus retractor with gun-type aneurysm clamp holder 5.Release Micronervus retractor, retracts tissue that pathological changes closes on to reach the object exposing pathological changes, now takes out gun-type aneurysm clamp holder 5, to the capable resection operation of diseased region.After having performed the operation, again stretch into gun-type aneurysm clamp holder 5, folder closes and takes out Micronervus retractor.
In addition, as needed row nuclear magnetic resonance check in art, without the need to taking out this Micronervus retractor.
Below the preferred embodiment that this utility model is created is illustrated, but this utility model is created and is not limited to described embodiment, those of ordinary skill in the art can also make all equivalent modification or replacement under the prerequisite without prejudice to this utility model creative spirit, and these equivalent modifications or replacement are all included in the application's claim limited range.
Claims (9)
1. a Micronervus retractor, two torque arm (2) comprising helical form tension ring (1) and stretch out from screwed tension circle (1) two ends respectively, it is characterized in that: described torque arm (2) connects drawing arm (3), is provided with limiting section (4) between two torque arm (2);
Described drawing arm (3) is sector structure, drawing arm (3) is near-end near one end of torque arm (2), one end away from torque arm (2) is far-end, and described drawing arm (3) is stretched to the flat of far-end gradually by the lath-shaped of near-end.
2. a kind of Micronervus retractor according to claim 1, is characterized in that: described torque arm (2) is stretched out the backward inner side of tension ring (1) and formed bending structure.
3. a kind of Micronervus retractor according to claim 1, is characterized in that: described limiting section (4) comprises the positive stop strip be coupling respectively on two torque arm (2), and two positive stop strips are hinged.
4. a kind of Micronervus retractor according to claim 1, is characterized in that: the lateral surface of described drawing arm (3) is provided with anti-skidding groove face, and the medial surface of drawing arm (3) is provided with dumb light shiny surface.
5. a kind of Micronervus retractor according to claim 1, is characterized in that: the distal tip of described drawing arm (3) is arc-shaped structure.
6. a kind of Micronervus retractor according to claim 1, is characterized in that: the diameter of described helical form tension ring (1) is 2 ~ 5mm.
7. a kind of Micronervus retractor according to claim 1, is characterized in that: the length of described torque arm (2) is 4 ~ 8mm.
8. a kind of Micronervus retractor according to claim 1, is characterized in that: the length of described drawing arm (3) is 10 ~ 25mm.
9. a kind of Micronervus retractor according to claim 1, is characterized in that: the width of described drawing arm (3) is 2 ~ 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520112409.2U CN204581368U (en) | 2015-02-16 | 2015-02-16 | A kind of Micronervus retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520112409.2U CN204581368U (en) | 2015-02-16 | 2015-02-16 | A kind of Micronervus retractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204581368U true CN204581368U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520112409.2U Expired - Fee Related CN204581368U (en) | 2015-02-16 | 2015-02-16 | A kind of Micronervus retractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204581368U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109069162A (en) * | 2016-04-25 | 2018-12-21 | 蛇牌股份公司 | Convert aneurysm clip |
| US11311299B2 (en) | 2017-11-20 | 2022-04-26 | Aesculap Ag | Surgical clip with bracket-free guide system |
-
2015
- 2015-02-16 CN CN201520112409.2U patent/CN204581368U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109069162A (en) * | 2016-04-25 | 2018-12-21 | 蛇牌股份公司 | Convert aneurysm clip |
| US11311299B2 (en) | 2017-11-20 | 2022-04-26 | Aesculap Ag | Surgical clip with bracket-free guide system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20190216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |