CN202892013U - Bi-directional expanding device for human body operation incision - Google Patents
Bi-directional expanding device for human body operation incision Download PDFInfo
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- CN202892013U CN202892013U CN 201220457477 CN201220457477U CN202892013U CN 202892013 U CN202892013 U CN 202892013U CN 201220457477 CN201220457477 CN 201220457477 CN 201220457477 U CN201220457477 U CN 201220457477U CN 202892013 U CN202892013 U CN 202892013U
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- extension fixture
- expansion
- body operation
- expanding
- expanding device
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- Expired - Fee Related
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Abstract
The utility model discloses a bi-directional expanding device for a human body operation incision. The bi-directional expanding device for the human body operation incision comprises a main expanding device (1) and an auxiliary expanding device. The main expanding device (1) is of a support and expanding structure with one hinged end, and expanding forks (13) are arranged at the front end of the main expanding device (1). A structure matched with the auxiliary expanding device is arranged on the front portion of the main expanding device (1). Due to the fact the main expanding device and the auxiliary expanding device are matched, the expansion of the auxiliary expanding device is adjusted in a pinion-and-rack mode, and the adjusting range is easy to control. A bi-directional adjustment structure of the main expanding device enables the expanding forks (13) to be closely matched, the expanding forks (13) can not be separated, and positioning effect is good. One operator can finish expansion and non-expansion operation of the expanding devices by hands, installation is fixed, operation difficulty of the whole surgery is reduced, surgery time is shortened, and possibility of causing secondary damage on a patient is reduced.
Description
Technical field
This utility model belongs to technical field of medical instruments, further belongs to the orthopedic instrument technical field, is specifically related to a kind of simple in structurely, is suitable for the body operation otch, is particularly suitable for the two-way extension fixture of operation on vertebra otch.
Background technology
Human body damages because of traumatic, pathologic factor, often needs operative treatment.Such as prolapse of lumbar intervertebral disc, just need to outstanding intervertebral disc be rejected by operation, and recover the lumbar vertebra normal function by mechanical prosthesis.Lumbar surgery need to carry out longitudinal cut along spinal column, for the ease of operation technique, need to will cut in length and breadth two-way pulling open, and traditional mode is with colluding the shape apparatus, by different people operative incision being pulled open.Because the application of force is unbalanced, not only bad for operation technique, has prolonged operating time, pulls for a long time skin and may cause blood supply insufficiency and skin is caused irreversible damage.Also develop the extension fixture that is suitable for the two-way tension of operative incision abroad, obtained good expansion effect, but since expensive, be unfavorable for popularizing.The prior art extension fixture comprises vertical expansion device and lateral magnification device, and the structure of pushing tow is adopted in the expansion of vertical expansion device, easily dislocation.The adjusting of lateral magnification device adopts the sliding rack plug-in to regulate, because the existence of expansion resistance is easy to cause range of accommodation excessive or too small, wayward during adjusting.When vertically being used with the lateral magnification device, more and take abutment structure because cooperating the joint, easily slippage is unfavorable for one man operation, needs other people cooperation, has caused the inconvenience in the use.One people fixes the vertical expansion device, then the lateral magnification device is placed the draw-in groove position of vertical expansion device, then it is controlled, also need simultaneously staff's adjusting gear rack, to adjust the lateral magnification device, therefore whole operating process needs many people just can finish, and when personnel's mismate is easy to cause strong point dislocation, throws off, locating effect is bad, cause the patient uncomfortable, wound is long recovery time, the danger increase of infection etc.Therefore, develop a kind of simple in structurely, easy and simple to handle, adjust accurately, convenient and strength-saving, the location appears the accurate two-way extension fixture of effect and seems very meaningful.
The utility model content
It is a kind of simple in structure, easy and simple to handle that the purpose of this utility model is to provide, and adjusts accurately, and convenient and strength-saving, it is accurate that the location appears effect, can effectively reduce the two-way extension fixture of body operation otch of operation technique difficulty.
The purpose of this utility model is achieved in that and comprises that main extension fixture, secondary extension fixture, described main extension fixture are the hinged support expansion structure of an end that front end arranges the expansion fork; The anterior structure that cooperates with secondary extension fixture that arranges of main extension fixture.
This utility model cooperates by main extension fixture and secondary extension fixture, and secondary extension fixture expansion is regulated and adopted pinion and-rack to regulate adjusting range easy to control; The two-ways regulation structure of main extension fixture is so that the expansion fork cooperates closely unlikely disengagement, good positioning effect.Only need people's bimanualness just can finish the expansion and releasing operation of extension fixture, install and fix, improve the quality that appears deep wounds, reduced the operation easier of whole operation, shortened operating time, reduced the probability to patient's secondary damage.
Description of drawings
Fig. 1 is this utility model structural representation front view;
Fig. 2 is that the A of Fig. 1 picks and places large cutaway view;
Fig. 3 is the front view of main extension fixture;
Fig. 4 is the right view of main extension fixture;
Fig. 5 is the side view of secondary extension fixture;
Fig. 6 is the structural representation of another embodiment of main extension fixture;
Among the figure:1-master's extension fixture, 11-regulates strut, the 12-draw-in groove, 13-expands fork, the secondary expansion fork of 2-, support is regulated in the 3-expansion, and 31-moves expanding bar, the quiet expanding bar of 32-, 33-driving gear wheel seat, the rationed marketing of 34-gear lock, 4-support bar.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is further described, but never in any form this utility model is limited, any conversion or replacement based on this utility model training centre is done all belong to protection domain of the present utility model.
As shown in Figure 1, this utility model comprises main extension fixture 1, secondary extension fixture, and described main extension fixture 1 is the hinged support expansion structure of an end, and front end arranges expansion fork 13; The main extension fixture 1 anterior structure that cooperates with secondary extension fixture that arranges.
Described main extension fixture 1 comprises expansion fork 13, adjusts strut 11, and described expansion fork 13 cooperates with adjusting strut 11 bidirectional helicals.
Described secondary extension fixture comprises support bar 4, secondary expansion fork 2 and expansion adjusting rod 3, and described support bar 4 or secondary expansion fork 2 one ends arrange respectively with expanding and regulate support 3 and cooperate.
As shown in Figure 2, described support bar 4, secondary expansion fork 2 and expansion are regulated between the support 3 and are taked the clamping fit structure.Described clamping cooperates system to cooperate by the ball clamping of flexible drive, and ball embeds under spring action in the clamping groove of counterpart, realizes that clamping cooperates, and prevents freely fitted slip phenomenon.
Such as Fig. 1, shown in Figure 3, the expansion of described main extension fixture 1 fork front portion arranges respectively draw-in groove 12 or pin-and-hole.Described draw-in groove cooperates with support bar 4 clampings, and the bearing pin that pin-and-hole and support bar 4 ends arrange movingly.
As shown in Figure 1, it be gear-tooth bar structure that support 3 is regulated in described expansion, and an end arranges moving expanding bar 31 and pair and expands fork and connect and cooperate; The middle part arranges quiet expanding bar 32 and cooperates with the support bar clamping.
Described expansion is regulated support 3 middle parts driving gear wheel seat 33 is set, and on the described driving gear wheel seat 33 driving handle is set.
On the described driving gear wheel seat 33 gear lock rationed marketing 34 is set.
Fig. 4 shows the side-looking structure of secondary extension fixture, and its expansion fork 13 front ends arrange the profile of tooth card base.
Such as Fig. 1, shown in Figure 3, described adjusting strut 11 is the bidirectional helical structure, pitches 13 movingly with expansion respectively, and the middle part arranges adjusting handle.
Fig. 6 shows the structure of the another kind of embodiment of main extension fixture, and it is to regulate the structure of strut 11, and it is the unidirectional screw rod adjustment structure of an end band swing handle, and its front end is slidingly matched with the expansion fork arm with expansion fork arm threaded engagement, its rear portion.
Explanation this utility model operation principle and work process as an example of operation on vertebra example:
During operation, first with the profile of tooth card base of two of main extension fixture expansion forks 13 insert vertebral plate with peeled off and paraspinal muscle between, utilize the adjusting handle of regulating on the strut 11, make expansion pitch 13 the operative incision vertical expansion opened; Then the end bearing pin with the support bar of secondary extension fixture inserts in the pin-and-hole of main extension fixture expansion fork 13, and support bar is pushed in the draw-in groove 12, will expand the quiet expanding bar 32 of regulating support 3 and moving expanding bar 31 again and connect and cooperate with support bar and the secondary fork of expanding respectively.Remove the gear lock rationed marketing, driving handle on the rotary actuation pinion stand, it is outwards mobile that gear roll to drive moving expanding bar along tooth bar, the operative incision lateral magnification is opened outwards retracts paraspinal muscle to suitable aperture, with gear lock rationed marketing reset locking thereby drive secondary expansion fork.Thereby well appearing between the required vertebral plate of operation gap and facet joint reaches in length and breadth and is convenient to operation control to the purpose of two-way expansion.It is complete to perform the operation, and at first removes the gear lock rationed marketing, the driving handle on the rotary actuation pinion stand, gear drives moving expanding bar along the tooth bar rolling and moves inward, and removes lateral magnification, and rotary supporting rod is deviate from it from draw-in groove, and from pin-and-hole, extract, take off secondary extension fixture and expansion adjusting support.At last, rotate the handwheel of regulating on the strut 11, expansion fork 13 is inwardly shunk, take off main extension fixture, finish the operation dilation procedure.
This utility model adopts the secondary expanding mechanism of pinion and-rack, and more flexible, light than the prior art adjusting, it is more accurate to locate, convenient further operation technique.Appear more abundant.The clamping fit structure makes operation faster so that be difficult for slippage.The two-ways regulation structure of the adjusting strut of main extension fixture makes adjustment structure more firm, inconsistent phenomenon can not occur.And bearing pin and draw-in groove bidimensional fit structure, more firm than the one-dimensional fit structure of prior art, be difficult for slippage.Cooperate more firm.
The utlity model has easy and simple to handlely, convenient and strength-saving, reduced the operation easier of operation; Accurate positioning is difficult for loosening characteristics.And the patient is damaged little, post-operative recovery is fast.
Claims (10)
1. the two-way extension fixture of body operation otch comprises main extension fixture (1), secondary extension fixture, it is characterized in that: described main extension fixture (1) is the hinged support expansion structure of an end, and front end arranges expansion fork (13); The anterior structure that cooperates with secondary extension fixture that arranges of main extension fixture (1).
2. the two-way extension fixture of body operation otch according to claim 1, it is characterized in that: described main extension fixture (1) comprises expansion fork (13), regulates strut (11), and described expansion fork (13) cooperates with adjusting strut (11) bidirectional helical.
3. the two-way extension fixture of body operation otch according to claim 1, it is characterized in that: described secondary extension fixture comprises that support bar (4), secondary expansion fork (2) and expansion regulate support (3), and described support bar (4) or secondary expansion fork (2) one ends arrange respectively with expanding to regulate and support (3) and cooperate.
4. the two-way extension fixture of body operation otch according to claim 3 is characterized in that: take the clamping fit structure between described support bar (4), secondary expansion fork (2) and the expansion adjusting support (3).
5. the two-way extension fixture of body operation otch according to claim 1, it is characterized in that: expansion fork (13) front portion of described main extension fixture (1) arranges respectively draw-in groove (12) or pin-and-hole, described draw-in groove (12) cooperates with support bar (4) clamping, and the bearing pin that pin-and-hole and support bar (4) end arranges movingly.
6. the two-way extension fixture of body operation otch according to claim 1 is characterized in that: described expansion is regulated support (3) and is gear-tooth bar structure, and an end arranges moving expanding bar (31) and connects and cooperate with the secondary fork of expanding; The middle part arranges quiet expanding bar (32) and cooperates with the support bar clamping.
7. the two-way extension fixture of body operation otch according to claim 1 is characterized in that: in the middle part of the described expansion adjusting support (3) driving gear wheel seat (33) is set, on the described driving gear wheel seat (33) driving handle is set.
8. the two-way extension fixture of body operation otch according to claim 7 is characterized in that: gear lock rationed marketing (34) is set on the described driving gear wheel seat (33).
9. the two-way extension fixture of body operation otch according to claim 2 is characterized in that: described adjusting strut (11) is the bidirectional helical structure, respectively with expansion fork (13) movingly, the middle part arranges adjusting handle.
10. the two-way extension fixture of body operation otch according to claim 2, it is characterized in that: described adjusting strut (11) is the unidirectional screw rod adjustment structure of an end band swing handle, its front end is slidingly matched with the expansion fork arm with expansion fork arm threaded engagement, its rear portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220457477 CN202892013U (en) | 2012-09-10 | 2012-09-10 | Bi-directional expanding device for human body operation incision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220457477 CN202892013U (en) | 2012-09-10 | 2012-09-10 | Bi-directional expanding device for human body operation incision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202892013U true CN202892013U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220457477 Expired - Fee Related CN202892013U (en) | 2012-09-10 | 2012-09-10 | Bi-directional expanding device for human body operation incision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202892013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860847A (en) * | 2012-09-10 | 2013-01-09 | 周田华 | Two-way expansion device for operative incision of human body |
| CN109820554A (en) * | 2019-03-13 | 2019-05-31 | 中山大学附属第一医院 | A kind of thymoma open chest surgery multi-angle sternum retractor |
-
2012
- 2012-09-10 CN CN 201220457477 patent/CN202892013U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860847A (en) * | 2012-09-10 | 2013-01-09 | 周田华 | Two-way expansion device for operative incision of human body |
| CN109820554A (en) * | 2019-03-13 | 2019-05-31 | 中山大学附属第一医院 | A kind of thymoma open chest surgery multi-angle sternum retractor |
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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: 20130424 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |