CN204072294U - A kind of intramedullary pin for implanting humerus medullary cavity - Google Patents
A kind of intramedullary pin for implanting humerus medullary cavity Download PDFInfo
- Publication number
- CN204072294U CN204072294U CN201420444131.4U CN201420444131U CN204072294U CN 204072294 U CN204072294 U CN 204072294U CN 201420444131 U CN201420444131 U CN 201420444131U CN 204072294 U CN204072294 U CN 204072294U
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- Prior art keywords
- humerus
- angle
- hole
- square hole
- implanting
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- Expired - Lifetime
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- 210000002758 humerus Anatomy 0.000 title claims abstract description 49
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 210000000845 cartilage Anatomy 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 description 14
- 238000003199 nucleic acid amplification method Methods 0.000 description 14
- 208000010392 Bone Fractures Diseases 0.000 description 13
- 206010017076 Fracture Diseases 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000642 iatrogenic effect Effects 0.000 description 2
- 208000002103 Shoulder Fractures Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
This utility model relates to a kind of intramedullary pin for implanting humerus medullary cavity, for inserting in the medullary cavity of humerus from head of humerus summit cartilage layers, it comprises rivet nut, this rivet nut has a near-end nail section and and follows closely with near-end the far-end that section is connected and follow closely section, described near-end nail section is provided with some lock holes along its circumferential different angles distribution, described far-end nail section is provided with the power hole along its circumferential different angles distribution and static(al) hole.There is provided a kind of intramedullary pin for implanting humerus medullary cavity that can improve fracture site stability, effectively reduce distal free end stress, and it effectively can also prevent the fixing pinning of single-side cortex from exiting risk.
Description
Technical field
This utility model relates to a kind of intramedullary pin for implanting humerus medullary cavity, belongs to medical instruments field.
Background technology
Proximal humeral fracture be clinical in one of common fracture, because its type is complicated, heal poor, become the difficult point in orthopaedic trauma treatment.Generally speaking, proximal humerus 1 fracture and 2 slightly displacement fracture expectant treatment modes adopting scarf bandage and plaster slab suspension more; 2 severe displaceds, the treatment of 3,4 fracture multirow internal fixation operations.
At present, internal fixation operation mainly adopts steel plate and intramedullary pin, as everyone knows, its fixed form of steel plate is eccentric fixing, it is placed on fracture end tension band position, so very high to the bending-twisting Capability Requirement of steel plate itself, in clinical, especially when humerus distance does not reach desirable reset, occur after row Plate internal fixiation that the probability of disconnected plate is higher, and the object of intramedullary pin to be percutaneous implantable bone pulp cavity reached fixing fracture, it belongs to axis and fixes, bending-twisting ability will be far longer than steel plate, but, there is following defect in conventional intramedullary nails: a) single angle places pinning, fracture site is easily shifted, b) do not form locking mechanism between intramedullary pin and pinning, especially easily exit at metaphyseal pinning, c) distal free end stress is concentrated, and easily causes the generation of intramedullary pin fracture and iatrogenic fracture.
Utility model content
The purpose of this utility model is the defect overcoming prior art existence, there is provided a kind of intramedullary pin for implanting humerus medullary cavity that can improve fracture site stability, effectively reduce distal free end stress, and it effectively can also prevent the fixing pinning of single-side cortex from exiting risk.
This utility model solves the technical scheme that its technical problem adopts: a kind of intramedullary pin for implanting humerus medullary cavity, for inserting in the medullary cavity of humerus from head of humerus summit cartilage layers, it comprises rivet nut, this rivet nut has a near-end nail section and and follows closely with near-end the far-end that section is connected and follow closely section, described near-end nail section is provided with some lock holes along its circumferential different angles distribution, described far-end nail section is provided with the power hole along its circumferential different angles distribution and static(al) hole.
Described lock hole is provided with four, be respectively front square hole, brief summary knothole, rear square hole and humerus square hole, the angle of described front square hole is clockwise 0 ° ~ 25 °, the angle of brief summary knothole is clockwise 90 °, the angle of rear square hole is counterclockwise 45 ° ~ 65 °, the angle in humerus square hole is clockwise 10 ° ~ 40 °, and the angle α of the longitudinal axis of humerus square hole and rivet nut is 75 ° ~ 85 °.
The angle in described power hole is clockwise 5 ° ~ 20 °, and the angle in described static(al) hole is 0 °.
Described lock hole is provided with four, be respectively front square hole, brief summary knothole, rear square hole and humerus square hole, the angle of described front square hole is counterclockwise 0 ° ~ 25 °, the angle of described brief summary knothole is counterclockwise 90 °, the angle of described rear square hole is clockwise 45 ° ~ 65 °, the angle in described humerus square hole is counterclockwise 10 ° ~ 40 °, and the angle α of the longitudinal axis of humerus square hole and rivet nut is 75 ° ~ 85 °.
The angle in described power hole is counterclockwise 5 ° ~ 20 °, and the angle in described static(al) hole is 0 °.
Described lock hole is screwed hole.
Described far-end nail section is provided with some along its axially extended jag groove, these jag grooves are uniform along its circumference annular.
The end face of described near-end nail section is provided with centre bore, the middle and lower part of this center bore inner wall is provided with screw thread, the end face of described near-end nail section is also provided with at least one locating slot.
It is coaxial that described near-end nail section and far-end follow closely section, and tapering transition.
Beneficial effect: a) this product is by the many planes of the some lock holes of near-end, multi-angle design, and far-end holes angulation designs, and improves the self stability of intramedullary nail system, thus improves the stability of fracture site; B) near-end adopts screw thread design for implanting lock hole in proximal humerus spongy bone, namely revolved by screw thread between pinning and intramedullary pin and, can effectively prevent the fixing pinning of single-side cortex from exiting risk; C) distal free end jag design, reduces distal free end stress, effectively reduces the risk of intramedullary pin fracture and iatrogenic fracture.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is the perspective view of preferred embodiment two of the present utility model;
Fig. 2 is the main TV structure schematic diagram of preferred embodiment one of the present utility model;
Fig. 3 is that enlarged drawing is looked on a left side of Fig. 2;
Fig. 4 is the sectional view of preferred embodiment one;
Fig. 5 is the amplification view along A-A line in Fig. 2;
Fig. 6 is the amplification view along B-B line in Fig. 2;
Fig. 7 is the amplification view along C-C line in Fig. 2;
Fig. 8 is the amplification view along D-D line in Fig. 3;
Fig. 9 is the amplification view along E-E line in Fig. 2;
Figure 10 is the amplification view along F-F line in Fig. 2;
Figure 11 is the amplification view along G-G line in Fig. 2;
Figure 12 is the structural representation of preferred embodiment two of the present utility model;
Figure 13 is that enlarged drawing is looked on a left side of Figure 12;
Figure 14 is the sectional view of preferred embodiment two;
Figure 15 is the amplification view along A-A line in Figure 12;
Figure 16 is the amplification view along B-B line in Figure 12;
Figure 17 is the amplification view along C-C line in Figure 12;
Figure 18 is the amplification view along D-D line in Figure 13;
Figure 19 is the amplification view along E-E line in Figure 12;
Figure 20 is the amplification view along F-F line in Figure 12;
Figure 21 is the amplification view along G-G line in Figure 12.
Detailed description of the invention
A kind of intramedullary pin for implanting humerus medullary cavity as shown in Figure 1, for inserting in the medullary cavity of humerus from head of humerus summit cartilage layers, it comprises rivet nut 1, this rivet nut 1 has a near-end nail section and and follows closely with near-end the far-end that section is connected and follow closely section, it is coaxial that described near-end nail section and far-end follow closely section, and tapering transition.
Described near-end nail section is provided with some lock holes 2,3,4,5 along its circumferential different angles distribution, and described lock hole 2,3,4,5 is screwed hole.Described far-end nail section is provided with the power hole 6 along its circumferential different angles distribution and static(al) hole 7.
This intramedullary pin has left and right dividing according to human body humerus anatomic form, the left intramedullary pin of called after and right intramedullary pin here.
Preferred embodiment one is left intramedullary pin: as shown in Fig. 2 ~ 10, and described lock hole 2,3,4,5 is provided with four, is respectively front square hole 2, brief summary knothole 3, rear square hole 4 and humerus square hole 5.The angle of described front square hole 2 is clockwise 0 ° ~ 25 °, preferentially selects 10 °; The angle of brief summary knothole 3 is clockwise 90 °; The angle of rear square hole 4 is counterclockwise 45 ° ~ 65 °, preferentially selects 55 °; The angle in humerus square hole 5 is clockwise 10 ° ~ 40 °, preferentially selects 25 °, and the central axis 51 in humerus square hole 5 is 75 ° ~ 85 ° with the angle α of the longitudinal axis 11 of rivet nut 1, preferentially selects 81 °.The angle in described power hole 6 is clockwise 5 ° ~ 20 °, preferentially selects 15 ° ~ 20 °, particularly 18 °; The angle in described static(al) hole 7 is 0 °.Except humerus square hole 5, all the other porose central axis are all vertical with the longitudinal axis 11 of rivet nut 1.
Preferred embodiment two is right intramedullary pin: as shown in Figure 11 ~ 19, and described lock hole 2,3,4,5 is provided with four, is respectively front square hole 2, brief summary knothole 3, rear square hole 4 and humerus square hole 5.The angle of described front square hole 2 is counterclockwise 0 ° ~ 25 ° and preferentially selects 10 °; The angle of described brief summary knothole 3 is counterclockwise 90 °; The angle of described rear square hole 4 is clockwise 45 ° ~ 65 °, preferentially selects 55 °; The angle in described humerus square hole 5 is counterclockwise 10 ° ~ 40 °, preferentially selects 25 °, and the central axis 51 in humerus square hole 5 is 75 ° ~ 85 ° with the angle α of the longitudinal axis 11 of rivet nut 1, preferentially selects 81 °.The angle in described power hole 6 is counterclockwise 5 ° ~ 20 °, preferentially selects 15 ° ~ 20 °, particularly 18 °; The angle in described static(al) hole 7 is 0 °.Except humerus square hole 5, all the other porose central axis are all vertical with the longitudinal axis 11 of rivet nut 1.
Described far-end nail section is provided with four along its axially extended jag groove 8, and these jag grooves 8 are uniform along its circumference annular.
The end face of described near-end nail section is provided with centre bore 9, the middle and lower part of this centre bore 9 inwall is provided with screw thread, the end face of described near-end nail section is also provided with three locating slots 10.
Described near-end nail segment length is 25 ~ 50mm, preferentially selects 30 ~ 40mm, particularly 35mm; Described far-end nail segment length is 60 ~ 110mm, preferentially selects 80 ~ 90mm, particularly 85mm; Described tapering transition segment length is 10 ~ 50mm, preferentially selects 20 ~ 40mm, particularly 30mm.
This intramedullary pin comprises four lock holes, but those skilled in the art should know that intramedullary pin can comprise the lock hole of arbitrary number.
Should be appreciated that specific embodiment described above only for explaining this utility model, and be not used in restriction this utility model.Still be among protection domain of the present utility model by spirit institute's apparent change of extending out of the present utility model or change.
Claims (9)
1. one kind for implanting the intramedullary pin of humerus medullary cavity, for inserting in the medullary cavity of humerus from head of humerus summit cartilage layers, it comprises rivet nut (1), this rivet nut (1) has a near-end nail section and and follows closely with near-end the far-end that section is connected and follow closely section, it is characterized in that: in described near-end nail section, be provided with some lock holes (2,3,4,5) along its circumferential different angles distribution, described far-end nail section is provided with the power hole (6) along its circumferential different angles distribution and static(al) hole (7).
2. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 1, it is characterized in that: described lock hole (2, 3, 4, 5) four are provided with, be respectively front square hole (2), brief summary knothole (3), rear square hole (4) and humerus square hole (5), the angle of described front square hole (2) is clockwise 0 ° ~ 25 °, the angle of brief summary knothole (3) is clockwise 90 °, the angle of rear square hole (4) is counterclockwise 45 ° ~ 65 °, the angle in humerus square hole (5) is clockwise 10 ° ~ 40 °, and humerus square hole (5) is 75 ° ~ 85 ° with the angle α of the longitudinal axis (11) of rivet nut (1).
3. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 2, is characterized in that: the angle of described power hole (6) is clockwise 5 ° ~ 20 °, and the angle of described static(al) hole (7) is 0 °.
4. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 1, it is characterized in that: described lock hole (2, 3, 4, 5) four are provided with, be respectively front square hole (2), brief summary knothole (3), rear square hole (4) and humerus square hole (5), the angle of described front square hole (2) is counterclockwise 0 ° ~ 25 °, the angle of described brief summary knothole (3) is counterclockwise 90 °, the angle of described rear square hole (4) is clockwise 45 ° ~ 65 °, the angle of described humerus square hole (5) is counterclockwise 10 ° ~ 40 °, and humerus square hole (5) is 75 ° ~ 85 ° with the angle α of the longitudinal axis (11) of rivet nut (1).
5. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 4, is characterized in that: the angle of described power hole (6) is counterclockwise 5 ° ~ 20 °, and the angle of described static(al) hole (7) is 0 °.
6. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 1, is characterized in that: described lock hole (2,3,4,5) is screwed hole.
7. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 1, it is characterized in that: described far-end nail section is provided with some along its axially extended jag groove (8), these jag grooves (8) are uniform along its circumference annular.
8. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 1, it is characterized in that: the end face of described near-end nail section is provided with centre bore (9), the middle and lower part of this centre bore (9) inwall is provided with screw thread, the end face of described near-end nail section is also provided with at least one locating slot (10).
9. a kind of intramedullary pin for implanting humerus medullary cavity according to claim 1, is characterized in that: it is coaxial that described near-end nail section and far-end follow closely section, and tapering transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420444131.4U CN204072294U (en) | 2014-08-07 | 2014-08-07 | A kind of intramedullary pin for implanting humerus medullary cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420444131.4U CN204072294U (en) | 2014-08-07 | 2014-08-07 | A kind of intramedullary pin for implanting humerus medullary cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204072294U true CN204072294U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420444131.4U Expired - Lifetime CN204072294U (en) | 2014-08-07 | 2014-08-07 | A kind of intramedullary pin for implanting humerus medullary cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204072294U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104173098A (en) * | 2014-08-07 | 2014-12-03 | 上海市第一人民医院 | Intramedullary nail used for implanting in humerus bone marrow cavity |
| CN108124424A (en) * | 2015-04-24 | 2018-06-05 | 拜欧米特制造有限责任公司 | Humerus nail |
| CN109171926A (en) * | 2018-09-12 | 2019-01-11 | 河北医科大学第三医院 | A kind of tibial intramedullary nailing and merging instrument convenient for merging operation |
| CN109717940A (en) * | 2017-10-27 | 2019-05-07 | 瑞特医疗技术公司 | The implantation piece of marrow outer portion with marrow inner part and offset |
| US11660201B2 (en) | 2018-10-25 | 2023-05-30 | Wright Medical Technology, Inc. | Systems, apparatuses, and methods for correcting a bone defect |
-
2014
- 2014-08-07 CN CN201420444131.4U patent/CN204072294U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104173098A (en) * | 2014-08-07 | 2014-12-03 | 上海市第一人民医院 | Intramedullary nail used for implanting in humerus bone marrow cavity |
| CN108124424A (en) * | 2015-04-24 | 2018-06-05 | 拜欧米特制造有限责任公司 | Humerus nail |
| US12011198B2 (en) | 2015-04-24 | 2024-06-18 | Biomet Manufacturing, Llc | Humeral nail |
| CN109717940A (en) * | 2017-10-27 | 2019-05-07 | 瑞特医疗技术公司 | The implantation piece of marrow outer portion with marrow inner part and offset |
| US11813003B2 (en) | 2017-10-27 | 2023-11-14 | Wright Medical Technology, Inc. | Implant with intramedullary portion and offset extramedullary portion |
| CN109171926A (en) * | 2018-09-12 | 2019-01-11 | 河北医科大学第三医院 | A kind of tibial intramedullary nailing and merging instrument convenient for merging operation |
| US11660201B2 (en) | 2018-10-25 | 2023-05-30 | Wright Medical Technology, Inc. | Systems, apparatuses, and methods for correcting a bone defect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |