CN203662889U - Medical bar holding clamp - Google Patents
Medical bar holding clamp Download PDFInfo
- Publication number
- CN203662889U CN203662889U CN201320833988.0U CN201320833988U CN203662889U CN 203662889 U CN203662889 U CN 203662889U CN 201320833988 U CN201320833988 U CN 201320833988U CN 203662889 U CN203662889 U CN 203662889U
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- Prior art keywords
- clamp
- clamp handle
- grooves
- holding
- binding clip
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- 210000000080 chela (arthropods) Anatomy 0.000 claims description 26
- 244000309464 bull Species 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010058907 Spinal deformity Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a medical bar holding clamp. The medical bar holding clamp comprises a first clamp handle and a second clamp handle which are hinged to each other through a pin shaft. One end of the first clamp handle and one end of the second clamp handle are respectively provided with a first clamp head and a second clamp head. The first clamp head and the second clamp head are respectively provided with an inward-concave groove. The two grooves form a jaw. The inner walls of the two grooves are respectively provided with rows of thin teeth. The arraying direction of the thin teeth is parallel to the axis of the pin shaft. At least three rows of thin teeth are arranged on the inner walls of the two grooves. Four groups of thin teeth are arranged on the jaw of the medical bar holding clamp. At circular bar clamping time, the four groups of thin teeth simultaneously generate action force on a circular bar, so that the phenomenon that the circular bar slips in the jaw is effectively prevented, and clamping is made to be more stable. Meanwhile, through the matching of a rack and a checking table, the medical bar holding clamp enables an operation doctor not to provide holding force continually at actual working time, and the phenomenon of hand fatigue and ache of the operation doctor at operation time is prevented.
Description
Technical field
This utility model relates to medical apparatus and instruments, relates in particular to a kind of medical rod pincers of holding for bone surgery.
Background technology
Hold rod pincers and be especially conventional operation tool in spinal operation of bone surgery, its major function is held and is got and fixing pole.In spinal operation the pole of various diameters be used to and other implants as pedicle screw etc. matches incompatible reaching correct the object of moving between deformity of spine or fixing vertebral body.In cervical vertebra, conventional diameter of the rod is generally 3.5mm and 3.2mm, and diameter of the rod conventional in breast lumbar vertebra is generally 5.5mm, 6.0mm and 6.35mm.Hold get function refer to by the pole of appropriate length and diameter clamp through incision wound put into patient body.Fixed function refers to holding rod pincers pole is clamped securely, then centered by the axis of pole, is rotated as lever to hold rod pincers lever, this revolve in the spine corrective operation that rod operates in multi-segmental very common.In addition, sometimes in art, need to be connected to pedicle screw on pole longitudinally strutting or compressing movement along pole, therefore conventionally first firmly clamp pole with holding rod pincers, then to hold rod pincers as fulcrum, with strut or pressurizing tool to pedicle screw, realization struts and pressurizes.Revolving rod and strutting pressurized operation all needs to hold rod pincers and clamps securely pole, otherwise pole will skid in the jaw of holding rod pincers, thereby cannot realize effective operation technique.
In at present clinical common hold rod pincers have a variety of, because the jaw of holding rod pincers is the position that directly clamps pole, so can the design of jaw be the key factor that effectively clamp pole.The rod pincers of holding of the prior art have columniform jaw, V-arrangement jaw and plane dentate jaw etc.These are held rod pincers ubiquity and clamp not strongly, and the shortcoming that pole easily skids in jaw, also exists the excessive phenomenon that easily makes operative doctor hand fatigue or pain of required grip force in addition.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of phenomenon that pole skids in jaw that reduces or avoid, reduce required grip force simultaneously, thereby prevent that the medical rod pincers of holding of hand one tired and pain from appearring in operative doctor, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, this utility model adopts following technical scheme: a kind of medical rod pincers of holding, comprise the first clamp handle and the second clamp handle that are hinged by bearing pin, one end of two clamp handles is respectively equipped with the first binding clip and the second binding clip, described the first binding clip and the second binding clip are respectively equipped with inwardly recessed groove, two grooves form jaw, on the inwall of described two grooves, be respectively equipped with serration in a row, and the orientation of described serration is parallel with the axis of bearing pin, on the inwall of described two grooves, be provided with altogether at least three row's serrations.
Preferably, described serration is provided with four rows, and is respectively equipped with two rows on the inwall of each groove.
Preferably, the row of four on described two grooves serration is positioned on same periphery in the time of work.
Further, the serration in described two grooves is symmetrical arranged.
Preferably, the hinged bull stick of the other end of described the first clamp handle, described bull stick is provided with tooth bar, and the other end of described the second clamp handle is provided with gear platform, and described tooth bar and gear platform match.
Preferably, between described the first clamp handle and the second clamp handle, be provided with resetting structure.
Preferably, described the first binding clip and the second binding clip are hinged on respectively in the first clamp handle and the second clamp handle, between described the first binding clip and the second binding clip, are hinged by bearing pin.
As mentioned above, the medical rod pincers of holding of one of the present utility model, have following beneficial effect:
The first binding clip of the present utility model and the second binding clip are respectively equipped with groove, described two grooves form jaw, in each groove, be provided with two groups of serrations, serration in two grooves is symmetrical, in the time clamping pole, clamping force on two binding clips is decomposed respectively to transfer on serration and by serration, pole is produced to active force, the active force that four groups of serrations produce is greater than in prior art only top lower two binding clips and produces clamping force, so the phenomenon that pole skids in jaw in use this utility model can effectively prevent operation, makes clamping more stable; Simultaneously, this utility model makes not need when the real work by the cooperation of tooth bar and gear platform the grip force that provides that operative doctor continues, prevent that the phenomenon of hand fatigue and pain from appearring in operative doctor in the time of operation, also avoided surface excessive to pole clamping force and damage pole.
Brief description of the drawings
Fig. 1 is the first embodiment structure chart of the present utility model.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Fig. 3 is B-B place sectional view in Fig. 2.
Fig. 4 is fastening figure of the present utility model.
Fig. 5 is the exploded view of the clamping force F in Fig. 4.
Fig. 6 is the second embodiment structure chart of the present utility model.
In figure: 1 bearing pin 11 bearing pins
2 first clamp handle 21 first binding clips
22 groove 23 bull sticks
24 tooth bar 3 second clamp handles
31 second binding clip 32 grooves
33 gear platform 4 serrations
5 resetting structure 6 poles
7 jaws
Detailed description of the invention
Structure that Figure of description illustrates, ratio, size etc., all contents in order to coordinate description to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of this utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that this utility model can produce and the object that can reach, all should still drop in the scope that technology contents that this utility model discloses can contain.Simultaneously, in this description, quote as " on ", the term such as D score, 'fornt', 'back', " centre ", also only for ease of understanding of narrating, but not in order to limit the enforceable scope of this utility model, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of this utility model without essence.
When being mainly used in spinal operation, this utility model clamps pole.Described pole in spinal operation, be used to and other implants as pedicle screw etc. matches incompatible reaching correct the object of moving between deformity of spine or fixing vertebral body.
Medical the first embodiment structural representation of holding rod pincers as a kind of in Fig. 1-Figure 3 shows that this utility model, comprise the first clamp handle 2 and the second clamp handle 3 that are hinged by bearing pin 1, one end of two clamp handles is respectively equipped with the first binding clip 21 and the second binding clip 31, the articulated position of the first clamp handle 2 and the second clamp handle 3 is near two binding clips 21, 31 1 sides, described the first binding clip 21 and the second binding clip 31 are respectively equipped with inwardly recessed groove 22, 32, two grooves 22, 32 form jaw 7, described two grooves 22, on 32 inwall, be respectively equipped with serration in a row 4, and the orientation of described serration 4 is parallel with the axis of bearing pin 1, described two grooves 22, on 32 inwall, be provided with altogether at least three row's serrations 4.As shown in Figure 3, the tip of described serration 4 can be circular or trapezoidal, can prevent from like this, in the time of clamping pole, the outer surface of pole is caused to damage.Because tip is smaller, so be no matter circular or trapezoidal produced clamping effect is essentially identical.
If above-mentioned serration 4 is provided with three groups, in one of them groove 22, be provided with one group so, in another groove 32, be provided with two groups, in any case three groups of serrations 4 arrange and can form a triangle, the clamping force transmitting from two binding clips 21,31 so just can be decomposed, clamping force after decomposition acts on pole by three groups of serrations 4, and the active force in three directions cooperatively interacts pole is realized effectively and being clamped.In the present embodiment preferably, described serration 4 is provided with four rows, and is respectively equipped with two rows on the inwall of each groove 22,32.Further, jaw 7 can be the shape such as circular, oval according to actual needs, because being serration 4, this utility model contacts realization clamping with pole, so the shape of jaw 7 does not affect operation principle, as long as guarantee that the row of four in two grooves 22,32 serration 4 is positioned on same periphery in the time clamping pole.In the present embodiment, preferably, the serration 4 in described two grooves 22,32 is symmetrical arranged.In the time that jaw 7 clamps pole, two binding clips 21, 31 pairs of poles can have respectively clamping force F, as shown in Figure 4, for the pole 6 that ensures to clamp stressed evenly, same groove 22, on 32 inwalls two row serration 4 is with respect to the force direction symmetry of clamping force F, because be that serration 4 contacts realization clamping with pole 6 when work, so clamping force F can act on power on pole 6 by two row's serrations 4, decompose on two row's serrations 4 by clamping force F, angle between the force direction of the force direction of clamping force F and serration 4 is α, on every row's serration 4, the size of component is F/2cos α.Taking angle α as 60 degree are as example, the size of each component is F, four row's serrations 4 are all that power to equate with clamping force F clamps pole 6 from four direction, be 4F, with in existing technology, only have upper and lower two clamping force 2F to compare, make the clamping force of resisting pole slip increase by one times, so substantially avoided the phenomenon that pole 6 skids in jaw 7 in operation, pole 6 is clamped more firm.
The position of the serration 4 in this utility model, there is certain relation in the size of angle α and pole namely, need to process the rod of holding matching with diameter of the rod according to practical situation and clamp.In general, the larger required grip force of angle α is just less, the best angle α number of degrees between 20 °～70 ° because the angle of angle α excessive after, the angle that jaw 7 need to open in folder rod motion will be very large, operation will be more difficult like this.
The hinged bull stick 23 of the other end of the first clamp handle 2 described in the utility model, described bull stick 23 is provided with tooth bar 24, and the other end of described the second clamp handle 3 is provided with gear platform 33, and described tooth bar 24 and gear platform 33 match.The effect of this structure comprises two aspects: be without two clamp handles 2,3 are kept to large grip on the one hand after operative doctor is held two clamp handles 2,3 with a firm grip, in clamping process, the second clamp handle 3 will be blocked by tooth bar 24 in the time moving downward, grip force is distributed on tooth bar 24, does not need to continue to provide grip force; On the other hand; because the length of tooth bar 24 presets; when gear platform 33 exceed with tooth bar 24 coordinate in scope time can not further move; prevent from damaging because grip force is excessive the parts such as clamp handle with this; the each parts of clamp handle are played a good protection, also prevented that jaw 7 is to the excessive damage jaw 7 of the clamping force of pole and pole simultaneously.
Between the first clamp handle 2 described in the utility model and the second clamp handle 3, be provided with resetting structure 5, the effect of described resetting structure 5 is that two clamp handles 2,3 can revert to initial position when be applied in two clamp handles 2,3 without external force, and two binding clips 21,31 can unclamp pole.Described resetting structure 5 can be to be arranged on separately stage clip between the first clamp handle 2 and the second clamp handle 3 etc.In the present embodiment, resetting structure 5 comprises two bending elastic sheet metals, one end of two elastic sheet metals is connected to the first clamp handle 2 and the second clamp handle 3 inner sides, the other end of two elastic sheet metals is hinged, in the time having external force to be applied in two clamp handles 2,3, two elastic metallic sector-meetings are compressed taking pin joint as fulcrum, two elastic sheet metal reduction in the time that external force disappears.The object that uses sheet metal in the present embodiment be increase life-span of the present utility model, assurance device intensity, prevent aging.
Be illustrated in figure 6 the second embodiment structural representation of the present utility model, described the first binding clip 21 and the second binding clip 31 are hinged on respectively in the first clamp handle 2 and the second clamp handle 3, between described the first binding clip 21 and the second binding clip 31, be hinged by bearing pin 11, preferably articulated position is at two binding clips 21, 31 positions near jaw 7, the binodal segment structure of present embodiment is compared with single segmental structure in above-mentioned embodiment, although structure is comparatively complicated, number of parts is many, but stressed more even on jaw 7, jaw 7 and two clamp handles 2, 3 is not more fragile.Other structures in present embodiment are identical with the first embodiment with principle.
In sum, a kind of medical rod pincers of holding of this utility model, can deal with problems existing hold excellent pincers cannot firm grip pole and need the problem of very large grip when work.So, have very high value and use meaning thereby this utility model has effectively overcome practical problems more of the prior art.
Above-mentioned embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting this utility model.This utility model also has many aspects under the prerequisite without prejudice to overall thought, to improve, and all can, under spirit of the present utility model and category, can above-described embodiment be modified or be changed for person skilled in the art scholar.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that this utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (7)
1. the medical rod pincers of holding, comprise the first clamp handle (2) and the second clamp handle (3) that are hinged by bearing pin (1), two clamp handles (2, 3) one end is respectively equipped with the first binding clip (21) and the second binding clip (31), it is characterized in that: described the first binding clip (21) and the second binding clip (31) are respectively equipped with inwardly recessed groove (22, 32), two grooves (22, 32) form jaw (7), described two grooves (22, 32) on inwall, be respectively equipped with serration in a row (4), and the orientation of described serration (4) is parallel with the axis of bearing pin (1), described two grooves (22, 32) on inwall, be provided with altogether at least three row's serrations (4).
2. the medical rod pincers of holding of one according to claim 1, is characterized in that: described serration (4) is provided with four rows, and are respectively equipped with two rows on the inwall of each groove (22,32).
3. the medical rod pincers of holding of one according to claim 2, is characterized in that: the row's serrations of four on described two grooves (22,32) (4) are positioned on same periphery in the time of work.
4. the medical rod pincers of holding of one according to claim 3, is characterized in that: the serration (4) in described two grooves (22,32) is symmetrical arranged.
5. the medical rod pincers of holding of one according to claim 1, it is characterized in that: the hinged bull stick of the other end (23) of described the first clamp handle (2), described bull stick (23) is provided with tooth bar (24), the other end of described the second clamp handle (3) is provided with gear platform (33), and described tooth bar (24) and gear platform (33) match.
6. the medical rod pincers of holding of one according to claim 1, is characterized in that: between described the first clamp handle (2) and the second clamp handle (3), be provided with resetting structure (5).
7. the medical rod pincers of holding of one according to claim 1, it is characterized in that: described the first binding clip (21) and the second binding clip (31) are hinged on respectively the first clamp handle (2) and the second clamp handle (3) is upper, between described the first binding clip (21) and the second binding clip (31), is hinged by bearing pin (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833988.0U CN203662889U (en) | 2013-12-17 | 2013-12-17 | Medical bar holding clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833988.0U CN203662889U (en) | 2013-12-17 | 2013-12-17 | Medical bar holding clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203662889U true CN203662889U (en) | 2014-06-25 |
Family
ID=50959230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320833988.0U Expired - Lifetime CN203662889U (en) | 2013-12-17 | 2013-12-17 | Medical bar holding clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203662889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105534624A (en) * | 2016-02-02 | 2016-05-04 | 郑明辉 | Hard human body implant pressing-in instrument |
-
2013
- 2013-12-17 CN CN201320833988.0U patent/CN203662889U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105534624A (en) * | 2016-02-02 | 2016-05-04 | 郑明辉 | Hard human body implant pressing-in instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Patentee after: SHANGHAI SANYOU MEDICAL Co.,Ltd. Address before: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Patentee before: SHANGHAI SANYOU MEDICAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |