CN204655075U - A kind of lengthening bar - Google Patents
A kind of lengthening bar Download PDFInfo
- Publication number
- CN204655075U CN204655075U CN201520282707.6U CN201520282707U CN204655075U CN 204655075 U CN204655075 U CN 204655075U CN 201520282707 U CN201520282707 U CN 201520282707U CN 204655075 U CN204655075 U CN 204655075U
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- ratchet
- axis
- female
- threaded
- bar
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Abstract
The utility model discloses a kind of lengthening bar, comprise: threaded rod, threaded female, regulate female and be provided with the bar cover of the threaded connector be connected with hole ring, bearing holding tank is respectively arranged with and with the thread groove be locked with screw thread parent phase regulating female both sides axle head, be provided with in adjustment mother and allow threaded rod to pass through and be communicated with the centre bore of thread groove and bearing holding tank, integrated sensor bearing is provided with in bearing holding tank, bar fixes with bearing inner race after putting one end insertion integrated sensor bearing away from threaded connector, the bearing outer ring of integrated sensor bearing and the inwall of bearing holding tank fix, described threaded female screw-threaded coupling is regulating in female thread groove, described threaded rod passes threaded female successively and after regulating female centre bore, bar cover is stretched in activity, adjustment mother is also provided with the retaining mechanism in order to be locked with adjustment parent phase by threaded rod.This utility model has easy to adjust and double thread bar can carry out the advantage that is locked.
Description
Technical field
This utility model relates to a kind of lengthening bar be applied on exter-nal fixer.
Background technology
Hole ring type exter-nal fixer (also claim " Taylor's space frame "), a kind of six telescopic lengthening bars are connected to the exter-nal fixer that can rotate freely on two hole rings and at junction point place obliquely, by changing the steric configuration of Taylor space frame, thus reach that fracture site resets, the orthopedic or object that extends.Lengthening bar is the vitals of hole ring type exter-nal fixer, the structure of the lengthening bar used at present is: comprise threaded rod, threaded female, regulate female, and one end is provided with the bar cover of flanging, regulating in mother the through hole being provided with through adjustment mother vertically, regulate the internal thread segment through-hole wall of female one end being provided with and can fixing with screw thread parent phase screw-threaded coupling, regulating in mother the positioning boss being also provided with the flanging placing bar cover, loop bar inserts and regulates imperial mother, the flanging of loop bar is just in time against on positioning boss, after threaded female and the internal thread segment of adjustment mother are locked mutually, the flanging of bar cover is just in time between threaded female and positioning boss, after described threaded rod screw thread insertion threaded female, just in time activity is stretched in bar cover.During use, only need rotate and regulate mother, adjustment mother is synchronous drives threaded female rotation, thus threaded rod is elongated or shortened, and realizes the drawing-off of threaded rod.The shortcoming of above-mentioned lengthening bar is: (1) due to bar cover in use, all that fix i.e. loop bar with the hole ring on exter-nal fixer be in use fixed, because the inwall of the outer wall of bar cover and the through hole of adjustment mother is matched in clearance, leave gap between the two, in use, very easily blocked by fine particle in gap, and then occur to regulate female locking phenomenon, thus again by regulating female length regulating threaded rod, locking phenomenon is frequent, greatly reduces work efficiency; (2) owing to regulating mother in use very easily to rotate because of external force, and then drive makes the collapsing length of threaded rod change, and greatly have impact on drawing-off effect.
Utility model content
The purpose of this utility model is to provide a kind of easy to adjust and double thread bar can carry out a kind of lengthening bar of being locked.
For achieving the above object, this utility model have employed following technical scheme: described a kind of lengthening bar, comprise: threaded rod, threaded female, regulate female and be provided with the bar cover of the threaded connector be connected with hole ring, bearing holding tank is respectively arranged with and with the thread groove be locked with screw thread parent phase regulating female both sides axle head, be provided with in adjustment mother and allow threaded rod to pass through and be communicated with the centre bore of thread groove and bearing holding tank, integrated sensor bearing is provided with in bearing holding tank, bar fixes with bearing inner race after putting one end insertion integrated sensor bearing away from threaded connector, the bearing outer ring of integrated sensor bearing and the inwall of bearing holding tank fix, described threaded female screw-threaded coupling is regulating in female thread groove, described threaded rod passes threaded female successively and after regulating female centre bore, bar cover is stretched in activity, adjustment mother is also provided with the retaining mechanism in order to be locked with adjustment parent phase by threaded rod.
Further, aforesaid a kind of lengthening bar, wherein: the structure of described retaining mechanism is: comprise sleeve, cutting ferrule and axis, the female outer wall of adjustment directly over centre bore is provided with mounting groove, be provided with in the bottom of mounting groove and the locking hole regulating female centre bore to communicate, sleeve is fixed in mounting groove, the top inner wall of sleeve is provided with annular convex shoulder, three axially directed muscle that the inwall of the sleeve below annular convex shoulder is uniformly distributed circumferentially, described cutting ferrule vertically guiding rib moves up and down in sleeve, on the outer wall of cutting ferrule, circumferentially uniform intervals is distributed with the projection that cutting ferrule is stretched out in six lower ends, the projection of cutting ferrule upwards can head on the annular convex shoulder of sleeve, the movable upper end of described axis inserts cutting ferrule, locking hole can be stretched out downwards and collet threaded bar in lower end, the middle outer wall of axis is provided with location convex shoulder, the outer wall of location convex shoulder is fixed with the ratchet of band six ratchets, on ratchet, uniform intervals is provided with three axis can be made to coordinate with the axially directed muscle of sleeve the gathering sill slided, ratchet even partition is become three ratchet groups by gathering sill, each ratchet group comprises two connected ratchets, back-moving spring is provided with between the location convex shoulder and the bottom of mounting groove of axis, the two ends of back-moving spring head on the bottom of location convex shoulder and mounting groove respectively, axis has the trend moved upward all the time under the power that the upsprings effect of back-moving spring, when by gathering sill, guiding rib moves axis vertically, axis by its ratchet upwards being headed on projection, synchronous push card cover can move under the power that the upsprings effect of back-moving spring, until the projection of cutting ferrule upwards withstands on the annular convex shoulder of sleeve, when cutting ferrule moves down by external force, cutting ferrule heads on ratchet by projection and synchronously promotes axis and be displaced downwardly to the below that ratchet is positioned at axially directed muscle, now axis is just in time displaced downwardly to its lower end and stretches out locking hole downwards and collet threaded bar, and when card dog end is positioned at the below of axially directed muscle, the ratchet of ratchet can move along projection and drive axis to rotate to side under the power that the upsprings effect of back-moving spring, until the ratchet that axis turns near axially directed muscle in each ratchet group is positioned at immediately below axially directed muscle, when removing the external force of pressing cutting ferrule, axis under the power that the upsprings effect of back-moving spring, meeting moves to this ratchet and heads on axially directed muscle, and make ratchet vertically guiding rib move and drive axis continue rotate to side, until the roller seating space that the adjacent ratchet that axis turns to each ratchet group is formed just in time sticks the bottom of axially directed muscle, make axis no longer rotate with on move and locking screw rasp bar.
Further, aforesaid a kind of lengthening bar, wherein: on bar cover, be provided with spacing convex shoulder away from one end outer wall of threaded connector, when bar cover fixes with the bearing inner race of integrated sensor bearing, spacing convex shoulder is just in time between integrated sensor bearing and the bottom of bearing holding tank.
Further, aforesaid a kind of lengthening bar, wherein: on bar cover, be arranged with the dust cap covered outside integrated sensor bearing.
By the enforcement of technique scheme, the beneficial effects of the utility model are: (1) bar cover is connected with adjustment parent phase by integrated sensor bearing, not only greatly reduce and regulate female adjustment resistance, make adjustment lighter, and effectively prevent bar cover with adjustment mother between there is locking phenomenon, substantially increase work efficiency; (2) by arranging the retaining mechanism that female and threaded rod can be regulated to lock mutually, avoiding and regulating mother in use to rotate because of external force, make threaded rod in use its collapsing length can not change, substantially increase drawing-off effect; (3) by the change in value value adopting integrated sensor bearing energy accurate feedback rotating cycle and meet with stresses, drawing-off effect is further increased.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of lengthening bar described in the utility model.
Fig. 2 is the decomposition texture schematic diagram of Fig. 1.
Fig. 3 is the cross-sectional view of the adjustment mother shown in Fig. 1.
Fig. 4 is the cross-sectional view of the cutting ferrule shown in Fig. 1.
Fig. 5 is the cross-sectional view of the axis shown in Fig. 1.
Fig. 6 is the cross-sectional view of the sleeve shown in Fig. 1.
Fig. 7 is the locking state schematic diagram of the axis locking screw rasp bar shown in Fig. 1.
Fig. 8 loosens the relaxation state schematic diagram of threaded rod for the axis shown in Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As Fig. 1, Fig. 2, Fig. 7, shown in Fig. 8, described a kind of lengthening bar, comprise: threaded rod 1, threaded female 2, regulate female 3 and the bar that is provided with the threaded connector be connected with hole ring overlap 5, bearing holding tank 6 is respectively arranged with and with the thread groove 7 be locked mutually with threaded female 2 regulating the both sides axle head of female 3, be provided with in adjustment female 3 and allow threaded rod 1 pass through and be communicated with the centre bore 8 of thread groove 7 and bearing holding tank 6, integrated sensor bearing 9 is provided with in bearing holding tank 6, one end away from threaded connector 4 on bar cover 5 is inserted integrated sensor bearing 9 and fixes with the bearing inner race of integrated sensor bearing 9, the bearing outer ring of integrated sensor bearing 9 and the inwall of bearing holding tank 6 fix, described threaded female 2 screw-threaded coupling is regulating in the thread groove 7 of female 3, described threaded rod 1 stretches into bar cover 5 through the rear activity of centre bore 8 of threaded female 2 and adjustment female 3 successively, adjustment female 3 is also provided with the retaining mechanisms in order to be locked mutually with adjustment female 3 by threaded rod 1, in the present embodiment, as Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6, the structure of described retaining mechanism is: comprise sleeve 10, cutting ferrule 11 and axis 12, female 3 outer walls of adjustment directly over centre bore 8 are provided with mounting groove 13, be provided with in the bottom of mounting groove 13 and the locking hole 14 regulating the centre bore 8 of female 3 to communicate, sleeve 10 is fixed in mounting groove 13, the top inner wall of sleeve 10 is provided with annular convex shoulder 15, three that the inwall of the sleeve 10 below annular convex shoulder 15 is uniformly distributed circumferentially axially directed muscle 16, described cutting ferrule 11 vertically guiding rib 16 moves up and down in sleeve 10, on the outer wall of cutting ferrule 11, circumferentially uniform intervals is distributed with the projection 17 that cutting ferrule 11 is stretched out in six lower ends, the projection 17 of cutting ferrule 11 upwards can head on the annular convex shoulder 15 of sleeve 10, the movable upper end of described axis 12 inserts cutting ferrule 11, lower end can stretch out locking hole 14 downwards and collet threaded bar 1, the middle outer wall of axis 12 is provided with location convex shoulder 18, the outer wall of location convex shoulder 18 is fixed with the ratchet 19 of band six ratchets, on ratchet 19, uniform intervals is provided with three axis can be made to coordinate with the axially directed muscle 16 of sleeve 10 gathering sill 20 slided, ratchet 19 even partition is become three ratchet groups by gathering sill 20, each ratchet group comprises two connected ratchets, back-moving spring 21 is provided with between the location convex shoulder 18 and the bottom of mounting groove 13 of axis 12, the two ends of back-moving spring 21 head on the bottom of location convex shoulder 15 and mounting groove 13 respectively, axis 12 has the trend moved upward all the time under the power that the upsprings effect of back-moving spring 21, when by gathering sill 20, guiding rib 16 moves axis 12 vertically, axis 12 can move up by guiding rib 16 vertically under the power that the upsprings effect of back-moving spring 21, and by each ratchet of its ratchet 19 is synchronously promoted cutting ferrule 11 moves respectively to the projection 17 above heading on cutting ferrule 11, until the projection 17 of cutting ferrule 11 upwards heads on the annular convex shoulder 15 of sleeve 10, when cutting ferrule 11 moves down by external force, cutting ferrule 11 to head on ratchet 19 corresponding ratchet by projection 17 and synchronously promotes axis 12 and be displaced downwardly to the below that its ratchet is positioned at axially directed muscle 16, and make the lower end of axis 12 stretch out locking hole 14 downwards and collet threaded bar 1, when the ratchet 19 of axis 12 is positioned at the below of axially directed muscle 16, under the power that the upsprings effect of back-moving spring 21, it can move along projection 17 and drive axis 12 to rotate to side the ratchet of ratchet 19, until the ratchet that axis 12 turns near axially directed muscle 16 in each ratchet group is positioned at immediately below axially directed muscle 16, then the external force of pressing cutting ferrule 11 is removed, now axis 12 under the power that the upsprings effect of back-moving spring 21, meeting moves to this ratchet and heads on axially directed muscle 16, and make ratchet vertically guiding rib 16 move and drive axis 12 to continue to rotate to side, until the roller seating space that the adjacent ratchet that axis 12 turns to each ratchet group is formed just in time sticks the bottom of axially directed muscle 16, make axis 12 no longer rotate with on move and the threaded rod 1 that is locked, thus adjustment female 3 is fixed with threaded rod 1, in the present embodiment, bar cover 5 is provided with spacing convex shoulder 22 away from one end outer wall of threaded connector 4, when bar cover 5 fixes with the bearing inner race of integrated sensor bearing 9, spacing convex shoulder 22, just in time between integrated sensor bearing 9 and the bottom of bearing holding tank 6, can improve the job stability of lengthening bar so further, in the present embodiment, bar cover 5 is arranged with the dust cap 23 covered outside integrated sensor bearing 9, domestic water, human body hydrops can be avoided like this to enter adjustment female 3 from integrated sensor bearing 9 and make adjustment female 3 regulate the generation of difficult situation, in actual use, the outer end of threaded rod 1 and the threaded connector of bar cover 5 are connected with upper and lower two hole rings respectively,
Operation principle of the present utility model is as follows:
When original state, axis 12 by gathering sill 20 vertically guiding rib 16 move in sleeve 10, now axis 12 can move up by guiding rib 16 vertically under the power that the upsprings effect of back-moving spring 21, and by ratchet 19 upwards being headed on projection 17 and synchronously promoting cutting ferrule 11 moves, until the projection 17 of cutting ferrule 11 upwards withstands on the annular convex shoulder 15 of sleeve 10, now axis 12 also just in time on move to its bottom and can not stretch out locking hole, namely threaded rod 1 is in relaxation state and can carries out telescopic adjustment;
When needing the collapsing length regulating threaded rod 1, only need rotate and regulate female 3, when threaded rod 1 is adjusted to appropriate length, then cutting ferrule 11 is pressed downwards, ratchet 19 can be headed on by projection 17 when cutting ferrule 11 moves down by external force and synchronously promote axis 12 and move down, until axis 12 to be displaced downwardly to the below that ratchet is positioned at axially directed muscle 16, now axis 12 is just in time displaced downwardly to its lower end and stretches out locking hole 14 collet threaded bar 1 downwards, when the ratchet 19 of axis 12 is positioned at the below of axially directed muscle 16, under the power that the upsprings effect of back-moving spring 21, it can move along projection 17 and drive axis 12 to rotate to side the ratchet of ratchet 19, until the ratchet that axis 12 turns near axially directed muscle 16 in each ratchet group is positioned at immediately below axially directed muscle 16, then the external force of pressing cutting ferrule 11 is removed, now axis 12 under the power that the upsprings effect of back-moving spring 21, meeting moves to this ratchet and heads on axially directed muscle 16, and make ratchet guiding rib 16 continuation vertically mobile and drive axis 12 to continue to rotate to side, until the roller seating space that the adjacent ratchet that axis 12 turns to each ratchet group is formed just in time sticks the bottom of axially directed muscle 16, make axis 12 no longer rotate with on move and the threaded rod 1 that is locked, thus adjustment female 3 is fixed with threaded rod 1,
When double thread bar 1 regulates needs again, first again press cutting ferrule 11 downwards, ratchet 19 can be headed on by projection 17 when cutting ferrule 11 moves down by external force and axis 12 is displaced downwardly to the below that ratchet is positioned at axially directed muscle 16, now under the power that the upsprings effect of back-moving spring 21, it can move along projection 17 and drive axis 12 to continue to rotate to side the ratchet of ratchet 19, until another ratchet that axis 12 turns to each ratchet group is positioned at immediately below axially directed muscle 16, then the external force of pressing cutting ferrule 11 is removed, now axis 12 under the power that the upsprings effect of back-moving spring 21, meeting moves to this ratchet and heads on axially directed muscle 16, and make ratchet vertically guiding rib 16 continue to side rotate and drive axis 12 to continue to rotate to side, until axis 12 turns to the gathering sill 20 that axially directed muscle 16 is arranged in axis 12, now axis 12 can head under the power that the upsprings effect of back-moving spring 21 cutting ferrule 11 vertically guiding rib 16 synchronous on move, until the projection 17 of cutting ferrule 11 is upwards withstood on the annular convex shoulder 15 of sleeve 10, now axis 12 also just in time on move to its bottom and can not stretch out locking hole, thus adjustment female 3 is unclamped mutually with threaded rod 1, now namely by rotating adjustment female 3, double thread bar 1 adjusts, pass through aforesaid operations, namely the adjustment operation of double thread bar 1 is completed,
The utility model has the advantages that: (1) bar cover is connected with adjustment parent phase by integrated sensor bearing, not only greatly reduce and regulate female adjustment resistance, make adjustment more light, and effectively prevent between bar cover with adjustment mother locking phenomenon occurs, substantially increase stability; (2) by arranging the retaining mechanism that female and threaded rod can be regulated to lock mutually, avoiding and regulating mother in use to rotate because of external force, make threaded rod in use its collapsing length can not change, substantially increase drawing-off effect; (3) by the change in value value adopting integrated sensor bearing energy accurate feedback rotating cycle and meet with stresses, drawing-off effect is further increased.In actual applications, lengthening bar described in the utility model, except being applied in Taylor's space frame, can also be applied in other bone anchors such as ankle joint coronalplane osteotomy orthosis, ankle joint coronalplane drawing-off deformity corrector, ankle joint coronalplane compound malformation orthosis and in other bone anchor such as fracture reposition instrument, femur ring type triangle synchronous lengthening device, the dynamic extenal fixation of ankle joint.
Claims (4)
1. a lengthening bar, comprise: threaded rod, threaded female, regulate female and be provided with the bar cover of the threaded connector be connected with hole ring, it is characterized in that: be respectively arranged with bearing holding tank regulating female both sides axle head and with the thread groove be locked with screw thread parent phase, be provided with in adjustment mother and allow threaded rod to pass through and be communicated with the centre bore of thread groove and bearing holding tank, integrated sensor bearing is provided with in bearing holding tank, bar fixes with bearing inner race after putting one end insertion integrated sensor bearing away from threaded connector, the bearing outer ring of integrated sensor bearing and the inwall of bearing holding tank fix, described threaded female screw-threaded coupling is regulating in female thread groove, described threaded rod passes threaded female successively and after regulating female centre bore, bar cover is stretched in activity, adjustment mother is also provided with the retaining mechanism in order to be locked with adjustment parent phase by threaded rod.
2. a kind of lengthening bar according to claim 1, it is characterized in that: the structure of described retaining mechanism is: comprise sleeve, cutting ferrule and axis, the female outer wall of adjustment directly over centre bore is provided with mounting groove, be provided with in the bottom of mounting groove and the locking hole regulating female centre bore to communicate, sleeve is fixed in mounting groove, the top inner wall of sleeve is provided with annular convex shoulder, three axially directed muscle that the inwall of the sleeve below annular convex shoulder is uniformly distributed circumferentially, described cutting ferrule vertically guiding rib moves up and down in sleeve, on the outer wall of cutting ferrule, circumferentially uniform intervals is distributed with the projection that cutting ferrule is stretched out in six lower ends, the projection of cutting ferrule upwards can head on the annular convex shoulder of sleeve, the movable upper end of described axis inserts cutting ferrule, locking hole can be stretched out downwards and collet threaded bar in lower end, the middle outer wall of axis is provided with location convex shoulder, the outer wall of location convex shoulder is fixed with the ratchet of band six ratchets, on ratchet, uniform intervals is provided with three axis can be made to coordinate with the axially directed muscle of sleeve the gathering sill slided, ratchet even partition is become three ratchet groups by gathering sill, each ratchet group comprises two connected ratchets, back-moving spring is provided with between the location convex shoulder and the bottom of mounting groove of axis, the two ends of back-moving spring head on the bottom of location convex shoulder and mounting groove respectively, axis has the trend moved upward all the time under the power that the upsprings effect of back-moving spring, when by gathering sill, guiding rib moves axis vertically, axis by its ratchet upwards being headed on projection, synchronous push card cover can move under the power that the upsprings effect of back-moving spring, until the projection of cutting ferrule upwards withstands on the annular convex shoulder of sleeve, when cutting ferrule moves down by external force, cutting ferrule heads on ratchet by projection and synchronously promotes axis and be displaced downwardly to the below that ratchet is positioned at axially directed muscle, now axis is just in time displaced downwardly to its lower end and stretches out locking hole downwards and collet threaded bar, and when card dog end is positioned at the below of axially directed muscle, the ratchet of ratchet can move along projection and drive axis to rotate to side under the power that the upsprings effect of back-moving spring, until the ratchet that axis turns near axially directed muscle in each ratchet group is positioned at immediately below axially directed muscle, when removing the external force of pressing cutting ferrule, axis under the power that the upsprings effect of back-moving spring, meeting moves to this ratchet and heads on axially directed muscle, and make ratchet vertically guiding rib move and drive axis continue rotate to side, until the roller seating space that the adjacent ratchet that axis turns to each ratchet group is formed just in time sticks the bottom of axially directed muscle, make axis no longer rotate with on move and locking screw rasp bar.
3. a kind of lengthening bar according to claim 1, it is characterized in that: on bar cover, be provided with spacing convex shoulder away from one end outer wall of threaded connector, when bar cover fixes with the bearing inner race of integrated sensor bearing, spacing convex shoulder is just in time between integrated sensor bearing and the bottom of bearing holding tank.
4. a kind of lengthening bar according to claim 1, is characterized in that: on bar cover, be arranged with the dust cap covered outside integrated sensor bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520282707.6U CN204655075U (en) | 2015-05-05 | 2015-05-05 | A kind of lengthening bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520282707.6U CN204655075U (en) | 2015-05-05 | 2015-05-05 | A kind of lengthening bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204655075U true CN204655075U (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520282707.6U Expired - Fee Related CN204655075U (en) | 2015-05-05 | 2015-05-05 | A kind of lengthening bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204655075U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308901A (en) * | 2016-08-31 | 2017-01-11 | 山东威高骨科材料股份有限公司 | Growing period spine correcting device |
| CN107854170A (en) * | 2017-11-14 | 2018-03-30 | 山东威高骨科材料股份有限公司 | Connector and its locking mechanism |
| CN111658003A (en) * | 2020-06-19 | 2020-09-15 | 浙江大学 | But pressure regulating medical science supersound is swept and is looked into device based on arm |
-
2015
- 2015-05-05 CN CN201520282707.6U patent/CN204655075U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308901A (en) * | 2016-08-31 | 2017-01-11 | 山东威高骨科材料股份有限公司 | Growing period spine correcting device |
| CN106308901B (en) * | 2016-08-31 | 2019-06-07 | 山东威高骨科材料股份有限公司 | A kind of growth period spinal orthosis |
| CN107854170A (en) * | 2017-11-14 | 2018-03-30 | 山东威高骨科材料股份有限公司 | Connector and its locking mechanism |
| CN111658003A (en) * | 2020-06-19 | 2020-09-15 | 浙江大学 | But pressure regulating medical science supersound is swept and is looked into device based on arm |
| CN111658003B (en) * | 2020-06-19 | 2021-08-20 | 浙江大学 | But pressure regulating medical science supersound is swept and is looked into device based on arm |
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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: 20150923 Termination date: 20190505 |
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| CF01 | Termination of patent right due to non-payment of annual fee |