CN113017812A - Broken rod connector and system - Google Patents
Broken rod connector and system Download PDFInfo
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- CN113017812A CN113017812A CN202110218182.XA CN202110218182A CN113017812A CN 113017812 A CN113017812 A CN 113017812A CN 202110218182 A CN202110218182 A CN 202110218182A CN 113017812 A CN113017812 A CN 113017812A
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- taper sleeve
- sleeve
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
- A61B17/705—Connectors, not bearing on the vertebrae, for linking longitudinal elements together for linking adjacent ends of longitudinal elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
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Abstract
The invention discloses a rod breaking connector and a system, and belongs to the technical field of orthopedic implants. When the connecting rod is used, the outer taper sleeve is driven to enable the second taper surface of the outer taper sleeve to extrude the first taper surface of the inner taper sleeve, so that the inner taper sleeve is contracted, and the two broken ends of the connecting rod are fixedly connected. The method is simple to operate, and the new connection can be established without taking out the broken titanium rod, so that the operation time is saved; and because the broken rod position is sleeved with the inner taper sleeve and the outer taper sleeve, the thickened connection of the broken rod position is realized, the bending resistance is stronger, the new connection is more stable and reliable, and the risk of re-fracture is avoided.
Description
Technical Field
The invention relates to the technical field of orthopedic implants, in particular to a broken rod connector and a broken rod connector system.
Background
Spondylolisthesis and lumbar spondylolisthesis are diseases which are characterized in that partial or all of superior vertebral bodies and inferior vertebral bodies slide due to abnormal bone connection of adjacent vertebral bodies caused by congenital dysplasia, trauma, strain and the like, and the diseases are manifested as lumbosacral pain, sciatic nerve involvement, intermittent claudication and other symptoms.
Modern medicine generally adopts pedicle of vertebral arch screw and titanium stick to orthopedic to the treatment backbone lumbar spondylolisthesis symptom, need take out the disconnected stick after the titanium stick breaks because of fatigue, reinstallates the titanium stick, and its operation time that wastes is longer to there is the risk of breaking again.
Disclosure of Invention
The invention aims to provide a rod breaking connector and a system, so as to achieve the purpose that the connection can be reestablished without taking out a titanium rod after the titanium rod is broken.
In order to solve the technical problems, the invention provides the following technical scheme:
on the one hand, the broken rod connector comprises an inner taper sleeve and an outer taper sleeve, wherein the inner taper sleeve is used for being sleeved at two broken ends of a broken rod, the outer taper sleeve is sleeved on the inner taper sleeve, a first conical surface is arranged on the outer surface of the inner taper sleeve, and a second conical surface matched with the first conical surface to clamp the inner taper sleeve is arranged on the inner surface of the outer taper sleeve.
Furthermore, the outer taper sleeve is arranged in a split mode along the axial direction of the broken rod.
Furthermore, the first conical surface is a stepped segmented conical surface, and the number of segments of the segmented conical surface is the same as the number of split bodies of the outer taper sleeve.
Further, the taper of each section of the segmented taper surface is gradually reduced along the taper surface of the inner taper sleeve from high to low.
Furthermore, first conical surface includes left half conical surface and right half conical surface, left half conical surface and right half conical surface are all followed interior taper sleeve center reduces to the tip gradually, outer taper sleeve is including being used for establishing first outer taper sleeve and the second outer taper sleeve on interior taper sleeve from both ends cover respectively.
Furthermore, the inner taper sleeve is arranged in a split mode along the circumferential direction of the broken rod.
Furthermore, an elastic ring is sleeved in the middle of the inner taper sleeve.
Furthermore, the outer surface of the inner taper sleeve is provided with a ring groove for embedding the elastic ring.
Furthermore, the inner surface of the inner taper sleeve is provided with an occlusion structure.
On the other hand, the rod breaking connection system comprises a rod breaking connector and a special instrument, wherein the rod breaking connector is the rod breaking connector, the special instrument is a pressurizing clamp, the pressurizing clamp comprises a first clamp body and a second clamp body, the first clamp body and the second clamp body are hinged to each other in the middle, the front ends of the first clamp body and the second clamp body are clamping portions, and openings used for containing broken ends of rods are formed in the clamping portions.
According to the connector and the system for the broken rod, the outer taper sleeve is sleeved outside the inner taper sleeve, the first conical surface is arranged on the outer surface of the inner taper sleeve, the second conical surface matched with the first conical surface is arranged on the inner surface of the outer taper sleeve, the outer taper sleeve is driven to enable the second conical surface of the outer taper sleeve to extrude the first conical surface of the inner taper sleeve, so that the inner taper sleeve is contracted, and the two broken ends of the broken rod are fixedly connected. The method is simple to operate, and the new connection can be established without taking out the broken titanium rod, so that the operation time is saved; and because the broken rod position is sleeved with the inner taper sleeve and the outer taper sleeve, the thickened connection of the broken rod position is realized, the bending resistance is stronger, the new connection is more stable and reliable, and the risk of re-fracture is avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the break rod connector of the present invention;
FIG. 2 is a schematic view of the installation of the breakrod connector shown in FIG. 1 in use;
FIG. 3 is a schematic view of a configuration of the upper petals of the inner taper sleeve of FIG. 1, wherein (a) is a perspective view, (b) is a bottom view, and (c) is a side view;
FIG. 4 is a schematic view of a modified version of the upper lobe of the inner taper sleeve of FIG. 3, wherein (a) is a perspective view, (b) is a bottom view, and (c) is a side view;
FIG. 5 is a schematic structural view of the first outer cone of FIG. 1, wherein (a) is a perspective view, (b) is a front view, and (c) is a sectional view taken along the direction A-A;
FIG. 6 is a schematic structural view of the elastic ring of FIG. 1, wherein (a) is a perspective view and (b) is a front view;
FIG. 7 is a schematic view of a pressure jaw of the present invention;
fig. 8 is a schematic view showing a state of use in which the breaking bar connector of fig. 1 is installed using the pressing jaw of fig. 7.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In one aspect, the present invention provides a connector for a broken rod, as shown in fig. 1-6, comprising an inner taper sleeve 2 for being sleeved on two broken ends of a broken rod 1 and an outer taper sleeve 3 sleeved on the inner taper sleeve 2, wherein the outer surface of the inner taper sleeve 2 is provided with a first taper surface 21, and the inner surface of the outer taper sleeve 3 is provided with a second taper surface 31 cooperating with the first taper surface 21 to tighten the inner taper sleeve 2 (i.e. the clamping is realized by taper surface cooperation without providing a separate/additional clamping structure).
When the device is used, the outer taper sleeve 3 is sleeved on the broken rod 1 along one broken end of the broken rod, the inner taper sleeve 2 is sleeved on two broken ends of the broken rod 1 along the direction matched with the outer taper sleeve 3, and then the inner taper sleeve 2 and the outer taper sleeve 3 are driven to move in opposite directions by an instrument, so that the inner taper surface of the outer taper sleeve 3 extrudes the outer taper surface of the inner taper sleeve 2, the inner taper sleeve 2 is contracted, and the two broken ends of the broken rod 1 are fixedly connected.
According to the rod breaking connector, the outer taper sleeve is sleeved outside the inner taper sleeve, the first conical surface is arranged on the outer surface of the inner taper sleeve, the second conical surface matched with the first conical surface is arranged on the inner surface of the outer taper sleeve, the outer taper sleeve is driven to enable the second conical surface of the outer taper sleeve to extrude the first conical surface of the inner taper sleeve, and therefore the inner taper sleeve is contracted, and the two broken ends of a rod are fixedly connected. The method is simple to operate, and the new connection can be established without taking out the broken titanium rod, so that the operation time is saved; and because the broken rod position is sleeved with the inner taper sleeve and the outer taper sleeve, the thickened connection of the broken rod position is realized, the bending resistance is stronger, the new connection is more stable and reliable, and the risk of re-fracture is avoided.
The present invention may have the following embodiments according to the specific structure of the inner and outer taper sleeves.
Example one
In the present invention, it is understood that the first tapered surface 21 may be a single tapered surface, and correspondingly, the second tapered surface 31 is also a single tapered surface, in this case, the inner taper sleeve 2 and the outer taper sleeve 3 are both single components, and the outer taper sleeve 3 can be sleeved and tightened on the inner taper sleeve 2 by moving the two components in opposite directions.
However, in order to improve the fixing strength and the convenience of use, as shown in fig. 1 to 5, in this embodiment, the first conical surface 21 preferably includes a left half conical surface 211 and a right half conical surface 211 ', both the left half conical surface 211 and the right half conical surface 211 ' are gradually reduced from the center to the end of the inner conical sleeve 2, the outer conical sleeve 3 includes a first outer conical sleeve 30 and a second outer conical sleeve 30 ' for respectively sleeved on the inner conical sleeve 2 from both ends, at this time, the inner conical sleeve 2 is still a single component, and the outer conical sleeve 3 is two components, so that the first outer conical sleeve 30 and the second outer conical sleeve 30 ' are respectively matched with the left half conical surface 211 and the right half conical surface 211 ' of the inner conical sleeve 2, so that the fixing strength can be improved, and the outer conical sleeve 3 is more easily sleeved on the broken rod 1 because the volume is reduced.
Considering that the width between two broken ends of the broken rod 1 is generally narrow, in order to make the outer taper sleeve 3 more easily sleeved on the broken rod 1, the first outer taper sleeve 30 and/or the second outer taper sleeve 30 'are separately arranged along the axial direction of the broken rod, that is, the first outer taper sleeve 30 and the second outer taper sleeve 30' may be respectively composed of more than two (such as 2, 3, 4, etc.) mutually independent rings. In the embodiment shown in FIG. 5, the first outer cone 30 and the second outer cone 30' are each comprised of 5 independent rings. The width of each circular ring is preferably less than or equal to the width between two broken ends of the broken rod 1, and specifically, the width of each circular ring can be 1-2 cm.
Preferably, at least one of the left half conical surface 211 and the right half conical surface 211' of the first conical surface 21 may be a stepped segmented conical surface, and the number of segments of the segmented conical surface is the same as the number of the corresponding outer taper sleeve. In the embodiment shown in fig. 4, the left half cone surface 211 and the right half cone surface 211' of the first cone surface 21 are segmented cone surfaces, and the number of segments of the segmented cone surfaces is the same as the number of the split bodies/rings (in the embodiment shown in fig. 4-5, the number of segments and the number of the split bodies/rings are 5), so that the segmented cone surfaces are matched with the rings one by one, the firmness is higher, when one of the rings is loosened, the firmness of the other rings is not affected, and therefore the inner taper sleeve 2 and the outer taper sleeve 3 are firmly clamped and are not easily loosened.
Further preferably, the taper of each of the segmented tapers decreases gradually from the top to the bottom along the taper of the inner taper sleeve 2 (i.e., decreases gradually from the center of the inner taper sleeve 2 to the two ends), namely, the taper slope of the large-diameter end of the inner taper sleeve 2 is greater than that of the small-diameter end, so that the tightening force of the split/ring of the large-diameter end of the inner taper sleeve 2 is greater than that of the small-diameter end, thus realizing the gradual tightening of the split/ring of the outer taper sleeve and the segmented taper surface, the structural design considers that the quality and the tightening force always deviate in the manufacturing process of the split/circular ring, if the conicity of the inner taper sleeve 2 is consistent, some split bodies/circular rings can not be tightened under the conditions of the machining errors, so that the conicity of the inner taper sleeve is set to be within a certain size range, the errors can be absorbed to a certain extent, and the fixing property is better ensured. In addition, for the case that the inner taper sleeve 2 is provided with left and right taper surfaces, at the moment, the tightening force of the split/ring corresponding to the middle part of the inner taper sleeve is the largest, and in the actual use process, the middle part of the inner taper sleeve corresponds to the middle gap of two broken rods, the tightening force is increased, the hooping between the inner side of the inner taper sleeve and the end parts of the broken rods can be increased, and therefore the fixing performance is improved.
Example two
In the present embodiment, the inner taper sleeve 2 and the outer taper sleeve 3 are configured as described above: the first conical surface 21 is a single conical surface, the second conical surface 31 is also a single conical surface, at this time, the inner taper sleeve 2 and the outer taper sleeve 3 are both single parts, and the outer taper sleeve 3 is sleeved and hooped on the inner taper sleeve 2 through the opposite movement of the two parts.
Preferably, the outer cone 3 is separately arranged along the axial direction of the breaking rod 1 (in this case, the first outer cone 30 (fig. 5) or the second outer cone 30' may be regarded as the outer cone), that is, it is composed of more than two independent rings. The first conical surface 21 can be a stepped segmented conical surface, the number of segments of the segmented conical surface is the same as that of the split bodies of the outer taper sleeve 3, and therefore the segmented conical surfaces and the split bodies/circular rings are matched one by one, firmness is higher, and firmness of other circular rings cannot be influenced when one circular ring is loosened, so that the inner taper sleeve and the outer taper sleeve are firmly clamped and are not easy to loosen.
The taper of each section of the conical surface of the segmented conical surface is gradually reduced along the direction from high to low of the conical surface of the inner conical sleeve 2, so that the split/annular ring of the outer conical sleeve and the segmented conical surface are gradually tightened, the annular ring close to the outer position can be better prevented from being loosened by the annular ring close to the inner position, the fixing performance of the inner conical sleeve 2 and the outer conical sleeve 3 is better, and an anti-loosening device does not need to be additionally arranged.
In the above embodiment, considering that the width between the two broken ends of the breaking rod 1 is generally narrow, in order to facilitate the installation of the inner taper sleeve 2, it is preferable that the inner taper sleeve 2 is separately arranged along the circumferential direction of the breaking rod 1 as shown in fig. 1 to 4, that is, the inner taper sleeve 2 is composed of more than two lobes (e.g., 3 lobes, 4 lobes, 5 lobes, etc.) in the circumferential direction. In the embodiment shown in the figures, the inner conical sleeve 2 consists of two lobes in the circumferential direction.
In order to improve the fixing strength between the inner taper sleeve 2 and the two broken ends of the broken rod 1, the inner surface of the inner taper sleeve 2 can be provided with an occlusion structure. The snap-fit structure may take on various forms as will occur to those skilled in the art, such as internal threads 22 (shown in FIGS. 3-4), ring teeth, irregularly arranged protrusions, and the like.
For the convenience of installing the inner taper sleeve 2, the middle part of the inner taper sleeve 2 can be sleeved with an elastic ring 4 to temporarily fix a plurality of segments of the inner taper sleeve 2 and prevent the segments from falling off. Also, to facilitate the fixing of the elastic ring 4, the outer surface of the inner taper sleeve 2 may be provided with a ring groove (not shown) into which the elastic ring 4 is inserted. The elastic ring 4 may be a circular ring made of a non-metal elastic material, a C-shaped ring made of a metal material (in the embodiment shown in fig. 6), or the like.
When the outer taper sleeve 3 comprises a first outer taper sleeve 30 and a second outer taper sleeve 30', the inner taper sleeve 2 is composed of an upper lobe and a lower lobe (i.e. an upper inner taper sleeve and a lower inner taper sleeve), and the elastic ring 4 is adopted, the installation process in the operation can be referred to as follows:
first, the first outer taper sleeve 30 and the second outer taper sleeve 30 'are sleeved on the broken rod 1 and move towards two outer sides respectively (as shown in (a) and (b) in fig. 2), then the lower inner taper sleeve and the elastic ring 4 are placed below two broken ends of the broken rod 1 (as shown in (c) in fig. 2), the upper inner taper sleeve passes through the elastic ring 4 and is placed above two broken ends of the broken rod 1 (as shown in (d) in fig. 2), and then the first outer taper sleeve 30 and the second outer taper sleeve 30' are driven by an instrument to move towards the center of the inner taper sleeve 2 (as shown in (e) in fig. 8 and 2), so that the inner taper surfaces of the first outer taper sleeve 30 and the second outer taper sleeve 30 'respectively press the left half taper surface 211 and the right half taper surface 211' of the inner taper sleeve 2, thereby the inner taper sleeve 2 is contracted, the two broken ends of the broken rod 1 are fixedly connected, and the broken rod connection is finished (as shown in (f) in fig. 2).
In another aspect, the present invention provides a rod breaking connection system, as shown in fig. 7-8, comprising a rod breaking connector 100 and a special instrument 500, wherein:
the rod breaking connector 100 is the above rod breaking connector, and has the same structure as above, and is not described herein again;
the special instrument 500 is a pressurizing clamp, the pressurizing clamp comprises a first clamp body 51 and a second clamp body 52 which are hinged to each other at the middle part, the front ends of the first clamp body 51 and the second clamp body 52 are clamping parts 53, and the clamping parts 53 are provided with openings 54 for accommodating the broken ends of the broken rod 1, so that the contact area between the clamping parts 53 and the end faces of the two outer taper sleeves is increased, the two outer taper sleeves can be conveniently clamped, and the clamping is firmer.
In use, the clamp body is moved to place the broken end of the breaking bar 1 in the opening 54 of the clamping part 53, and then the first clamp body 51 and the second clamp body 52 are pressed to make the clamping part 53 contract and clamp the breaking bar connector 100.
According to the broken rod connecting system, the outer conical sleeve is sleeved outside the inner conical sleeve, the first conical surface is arranged on the outer surface of the inner conical sleeve, the second conical surface matched with the first conical surface is arranged on the inner surface of the outer conical sleeve, the outer conical sleeve is driven to enable the second conical surface of the outer conical sleeve to extrude the first conical surface of the inner conical sleeve, so that the inner conical sleeve is contracted, and the two broken ends of a broken rod are fixedly connected. The method is simple to operate, and the new connection can be established without taking out the broken titanium rod, so that the operation time is saved; and because the broken rod position is sleeved with the inner taper sleeve and the outer taper sleeve, the thickened connection of the broken rod position is realized, the bending resistance is stronger, the new connection is more stable and reliable, and the risk of re-fracture is avoided.
Further, as shown in fig. 7, the rear portions of the first and second body 51, 52 may be provided with an elastic piece 55, so that the two bodies are kept in a normally open state; also, a rear end of one of the first and second bodies 51 and 52 may be hinged with a rack 56 for engaging with a rear end of the other, so that the first and second bodies 51 and 52 can be locked after being tightened to some extent.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a broken rod connector which characterized in that, establish including being used for the cover establish at the disconnected end of disconnected stick two ends interior taper sleeve with establish the outer taper sleeve on the interior taper sleeve, the surface of interior taper sleeve is equipped with first conical surface, the internal surface of outer taper sleeve be equipped with first conical surface cooperate with the tight second conical surface of interior taper sleeve cramp.
2. The breakrod connector according to claim 1, wherein the outer taper sleeve is provided separately in an axial direction of the breakrod.
3. The broken rod connector as claimed in claim 2, wherein the first tapered surface is a stepped and segmented tapered surface, and the number of segments of the tapered surface is the same as the number of segments of the outer sleeve.
4. The breakstem connector of claim 3, wherein the taper of each of the segmented tapers decreases from high to low along the taper of the inner taper sleeve.
5. The connector as claimed in any one of claims 1 to 4, wherein the first tapered surface comprises a left half tapered surface and a right half tapered surface, the left half tapered surface and the right half tapered surface both decrease from the center of the inner taper sleeve to the ends, and the outer taper sleeve comprises a first outer taper sleeve and a second outer taper sleeve for respectively fitting over the inner taper sleeve from both ends.
6. A break rod connector according to any of claims 1-4, characterized in that the inner taper sleeve is arranged separately in the circumferential direction of the break rod.
7. The connector as claimed in claim 6, wherein the inner collar has an elastic ring at its middle.
8. The connector of claim 7, wherein the outer surface of the inner collar has a circumferential groove into which the resilient ring is inserted.
9. A break rod connector according to any of the claims 1-4, characterized in that the inner surface of the inner cone sleeve is provided with a snap structure.
10. A broken rod connecting system comprises a broken rod connector and a special device, wherein the broken rod connector is the broken rod connector as claimed in any one of claims 1 to 9, the special device is a pressurizing clamp, the pressurizing clamp comprises a first clamp body and a second clamp body which are hinged in the middle, the front ends of the first clamp body and the second clamp body are clamping portions, and the clamping portions are provided with openings for accommodating broken ends of broken rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110218182.XA CN113017812B (en) | 2021-02-26 | 2021-02-26 | Broken rod connector and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110218182.XA CN113017812B (en) | 2021-02-26 | 2021-02-26 | Broken rod connector and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113017812A true CN113017812A (en) | 2021-06-25 |
| CN113017812B CN113017812B (en) | 2023-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110218182.XA Active CN113017812B (en) | 2021-02-26 | 2021-02-26 | Broken rod connector and system |
Country Status (1)
| Country | Link |
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| CN (1) | CN113017812B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032558A (en) * | 1978-10-06 | 1980-05-08 | Farrow Irrigation | Methods and kits for coupling hoses |
| CN2158006Y (en) * | 1992-10-27 | 1994-03-02 | 霖晔股份有限公司 | Reinforcing bar connecting device |
| US20020110413A1 (en) * | 2001-01-23 | 2002-08-15 | Gregel John J. | Reinforcing bar connection and method |
| CN202154741U (en) * | 2011-07-08 | 2012-03-07 | 浙江神腾康慈生物医药科技有限公司 | Double-joint compression forceps |
| CN105640624A (en) * | 2014-11-10 | 2016-06-08 | 阎新民 | Quick coupling of medical internal and external fixators for department of orthopaedics |
| CN206080669U (en) * | 2016-02-16 | 2017-04-12 | 宋若怡 | Elasticity backbone fixing system |
| CN106881420A (en) * | 2017-02-14 | 2017-06-23 | 江西昌河航空工业有限公司 | A kind of pipe fitting taper sheath closing in shaped device |
| CN209422074U (en) * | 2018-04-20 | 2019-09-24 | 昆明医科大学第二附属医院 | A kind of spinal column correction bar attachment device for capableing of flexible modulation installation site |
-
2021
- 2021-02-26 CN CN202110218182.XA patent/CN113017812B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032558A (en) * | 1978-10-06 | 1980-05-08 | Farrow Irrigation | Methods and kits for coupling hoses |
| CN2158006Y (en) * | 1992-10-27 | 1994-03-02 | 霖晔股份有限公司 | Reinforcing bar connecting device |
| US20020110413A1 (en) * | 2001-01-23 | 2002-08-15 | Gregel John J. | Reinforcing bar connection and method |
| CN202154741U (en) * | 2011-07-08 | 2012-03-07 | 浙江神腾康慈生物医药科技有限公司 | Double-joint compression forceps |
| CN105640624A (en) * | 2014-11-10 | 2016-06-08 | 阎新民 | Quick coupling of medical internal and external fixators for department of orthopaedics |
| CN206080669U (en) * | 2016-02-16 | 2017-04-12 | 宋若怡 | Elasticity backbone fixing system |
| CN106881420A (en) * | 2017-02-14 | 2017-06-23 | 江西昌河航空工业有限公司 | A kind of pipe fitting taper sheath closing in shaped device |
| CN209422074U (en) * | 2018-04-20 | 2019-09-24 | 昆明医科大学第二附属医院 | A kind of spinal column correction bar attachment device for capableing of flexible modulation installation site |
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| Publication number | Publication date |
|---|---|
| CN113017812B (en) | 2023-05-12 |
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