CN111588458B - High-pressure inflatable bone nail - Google Patents
High-pressure inflatable bone nail Download PDFInfo
- Publication number
- CN111588458B CN111588458B CN202010483160.1A CN202010483160A CN111588458B CN 111588458 B CN111588458 B CN 111588458B CN 202010483160 A CN202010483160 A CN 202010483160A CN 111588458 B CN111588458 B CN 111588458B
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- CN
- China
- Prior art keywords
- nail
- bone
- air inlet
- pressure
- thorn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The invention provides a high-pressure inflatable bone nail, which comprises two nail feet, a pull rod, two bone nail heads, two sliding blocks, an air inlet hose and a plurality of bone embedding mechanisms, wherein the two nail feet are connected with the pull rod through the pull rod; the nail foot comprises a shell, a plurality of guide holes are formed in the shell, and a pressure cavity is formed in the shell; the two bone nail heads are respectively arranged above the two nail feet, an inner sliding cavity is arranged inside the bone nail heads, and an air inlet is arranged above the bone nail heads; the thorn burying mechanism comprises a thorn cone which is arranged in the guide hole; the slide block is clamped in the inner slide cavity and arranged at two ends of the pull rod; the air inlet hose is communicated with the air inlet and the inner sliding cavity, and the air inlet hose is communicated with the inner sliding cavity and the pressure cavity. During the use, establish a gag lever post to the cover on the pull rod, fill high-pressure gas to the top of bone pin head, bury thorn mechanism card on the bone, then remove the gag lever post, make two nail feet inwards tighten up, realize the pressure of adjustment bone nail and broken bone department through the size of adjustment atmospheric pressure, convenience simple to use, convenient to detach is favorable to patient's postoperative to be resumeed.
Description
Technical Field
The invention relates to an orthopedic surgical instrument, in particular to a high-pressure inflatable bone nail.
Background
When the hand, the palm of foot indicates the injured time, often can have the fracture condition of some small fracture pieces, common fixed mode is on the ossicle piece of directly stapling in, perhaps sets up a fixed U type bone nail, this kind of bone nail mode not only can lead to the fixed of ossicle fracture piece and exert pressure unreliable, the dynamics of exerting pressure is also not adjustable, the contact dynamics of assurance bone nail and broken bone department that can not be accurate, the installation is also more complicated with the dismantlement process simultaneously, lead to patient's postoperative to resume slowly.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-pressure inflatable bone nail, aiming at the defects of the prior art, a cavity of a nail foot is provided with a bone embedding mechanism for increasing the stability of the bone nail on a bone, the contact force between the bone nail and a broken bone at a fracture part is adjusted by adjusting the air pressure, the bone nail is simple to disassemble, and the bone nail is beneficial to postoperative recovery of a patient.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a high pressure inflatable bone nail which characterized in that: comprises two nail feet, a pull rod, two bone nail heads, two slide blocks, an air inlet hose and a plurality of thorn burying mechanisms;
the nail foot comprises a shell, a plurality of guide holes are formed in the shell, and a pressure cavity is formed in the shell; the two bone nail heads are respectively arranged above the two nail feet, an inner sliding cavity is arranged inside the bone nail heads, and an air inlet is arranged above the bone nail heads; the thorn burying mechanism comprises a thorn cone which is arranged in the guide hole; the slide block is clamped in the inner slide cavity and arranged at two ends of the pull rod;
the air inlet hose is communicated with the inner sliding cavity and the pressure cavity, the air inlet hose is communicated with the air inlet and the inner sliding cavity, so that the air entering the pressure cavity from the air inlet pushes the stabbing cone of the stabbing mechanism out of the guide hole, and the air entering the inner sliding cavity from the air inlet acts on the sliding block, and the two bone nail heads and the two bone nail feet move oppositely.
Preferably, the number of the thorn burying mechanisms is two, namely a first thorn cone and a second thorn cone, and the movement directions of the first thorn cone and the second thorn cone are opposite;
bury thorn mechanism still includes parallel arrangement's first connecting rod and second connecting rod, first connecting rod rigid coupling in first thorn awl rear end, and second connecting rod rigid coupling in second thorn awl rear end, the one end that first thorn awl was kept away from to first connecting rod is equipped with the separation blade, and the one end that second thorn awl was kept away from to the second connecting rod is equipped with near-end dog and distal end dog, and near-end dog and distal end dog are located the both sides of separation blade.
Preferably, the first connecting rod and the second connecting rod are both racks, and a gear is arranged between the first connecting rod and the second connecting rod.
Preferably, each stabbing cone is provided with an annular sealing groove, a sealing ring is arranged in each annular sealing groove, and each annular sealing groove is located in the corresponding guide hole.
Preferably, the bone screw further comprises a limiting rod, and two ends of the limiting rod are respectively abutted to the two bone screw heads.
Preferably, the air inlet hose includes a first section communicating the air inlet and the inner slide chamber, and a second section communicating the inner slide chamber and the pressure chamber.
Preferably, a plurality of thorn burying mechanisms are arranged in the pressure cavity of each nail foot in sequence along the vertical direction.
The technical scheme of the invention has the beneficial effects that:
be equipped with the pressure chamber in the nail foot, be equipped with in the pressure chamber and bury thorn mechanism, during the use, establish the gag lever post card on the pull rod earlier, fill into high-pressure gas from the air inlet, during gaseous entering pressure chamber, gaseous utilizing the atmospheric pressure difference to promote the thorn awl and the bone chucking that bury thorn mechanism, increased the steadiness of bone nail and bone.
When the stabbing awl is tightly clamped with the bone, the limiting rod is removed, the air inlet is continuously inflated, the two nail feet are close to each other, and the bone nail and the broken bone at the fracture part have certain contact pressure. The contact pressure between the bone nail and the broken bone at the fracture part is adjusted by adjusting the air pressure, the operation is convenient and simple, the disassembly is easy, and the postoperative recovery of a patient is facilitated.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic view of a high pressure inflatable bone screw according to the present invention;
FIG. 2 is a schematic cross-sectional front view of a high-pressure inflatable bone screw according to the present invention;
FIG. 3 is a partial enlarged view of a high pressure inflatable bone screw according to the present invention;
fig. 4 is a schematic view of the working state of the high-pressure inflatable bone nail disclosed by the invention.
100. Nailing feet; 1. a housing; 2. a bone nail head; 3. a pull rod; 4. an air inlet; 5. a burr burying mechanism; 6. a slider; 7. an air intake hose; 8. a limiting rod; 9. a pressure chamber; 10. a guide hole; 11. an inner slide cavity; 51. a first link; 52. a second link; 53. a gear; 54. a first burr; 55. a proximal end stop; 56. a distal stop; 57. a baffle plate; 58. a second burr; 59. sealing the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 2, the high-pressure inflatable bone nail comprises two nail feet 100, a pull rod 3, two bone nail heads 2, two sliding blocks 6, an air inlet hose 7 and a plurality of bone embedding mechanisms 5. The two nail feet 100 are oppositely arranged, the nail foot 100 comprises a shell 1, a plurality of guide holes 10 are formed in the shell 1, each guide hole 10 is horizontally arranged, and a pressure cavity 9 is formed in the shell 1. Two bone nail heads 2 are respectively arranged above the two nail feet 100, an inner sliding cavity 11 is arranged inside the bone nail head 2, and an air inlet 4 is arranged above the bone nail head 2. A plurality of burring mechanisms 5 which are sequentially arranged along the vertical direction are arranged in the pressure cavity 9 of each nail foot 100. The thorn burying mechanism 5 comprises a thorn cone which is arranged in the guide hole 10. The slide block 6 is clamped in the inner slide cavity 11 and is abutted against the upper surface and the lower surface of the inner slide cavity 11, and the slide block 6 is arranged at two ends of the pull rod 3 and is integrally formed with the pull rod 3.
The air inlet hose 7 is communicated with the air inlet 4 and the inner sliding cavity 11, and the air inlet hose 7 is communicated with the inner sliding cavity 11 and the pressure cavity 9, so that the air entering the pressure cavity 9 from the air inlet 4 pushes the stabbing cone of the stabbing mechanism 5 out of the guide hole 10, and the air entering the inner sliding cavity 11 from the air inlet 4 acts on the sliding block 6, so that the two bone nail heads 2 and the nail feet 100 move towards each other. For example, the intake hose 7 includes a first section communicating the intake port 4 and the inner slide chamber 11, and a second section communicating the inner slide chamber 11 and the pressure chamber 9.
As shown in FIG. 3, the bur burying mechanism 5 has two burs, namely a first bur 54 and a second bur 58, and the movement directions of the first bur 54 and the second bur 58 are opposite. The thorn burying mechanism 5 further comprises a first connecting rod 51 and a second connecting rod 52, the first connecting rod 51 is fixedly connected to the rear end of the first thorn cone 54, the second connecting rod 52 is fixedly connected to the rear end of the second thorn cone 58, a blocking piece 57 is arranged at one end of the first connecting rod 51 far away from the first thorn cone 54, a near-end blocking piece 55 and a far-end blocking piece 56 are arranged at one end of the second connecting rod 52 far away from the second thorn cone 58, and the near-end blocking piece 55 and the far-end blocking piece 56 are respectively located on two sides of the blocking piece 57. When high-pressure gas is filled into the gas inlet 4, the rear ends of the first connecting rod 51 and the second connecting rod 52 are pushed to move forwards, and at the same time, the first burr cone 54 and the second burr cone 58 respectively extend out of the guide hole 10 until the tooth sheets on the first connecting rod 51 collide with the distal end stop 56 on the second connecting rod 52, so that the kinetic energy is counteracted.
The lower end of the first connecting rod 51 is provided with a tooth groove, the upper end of the second connecting rod 52 is provided with a corresponding tooth groove, a gear 53 is arranged between the first connecting rod 51 and the second connecting rod 52, the lower end of the gear 53 is meshed with the tooth groove of the first connecting rod 51, and the upper end of the gear 53 is meshed with the tooth groove of the second connecting rod 52, so that the first connecting rod 51 and the second connecting rod 52 can be linked, the phenomenon that the first connecting rod 51 and the second connecting rod 52 slide at the same time is avoided, and the nail foot 100 enables bones to be shattered due to the fact that the momentum of one side is borne only is avoided.
Each bayonet cone is provided with an annular sealing groove 59, a sealing ring is arranged in each annular sealing groove 59, and each annular sealing groove 59 is positioned in the corresponding guide hole 10 to prevent gas in the pressure cavity 9 from leaking out of the guide hole 10 on the shell 1.
As shown in fig. 4, the high-pressure inflatable bone nail further comprises a limiting rod 8, and two ends of the limiting rod 8 are respectively abutted against the two bone nail heads 2. When the first burr 54 and the second burr 58 of the burr embedding mechanism 5 are pushed by high-pressure gas to extend out of the guide hole 10, the limiting rod 8 is placed on the pull rod 3 to prevent the two nail feet 100 from approaching each other, and after the first burr 54 and the second burr 58 are inserted into the bone, the limiting rod 8 is removed to enable the two nail feet 100 to move towards each other along the pull rod 3 to compress the bone.
When the puncture-burying mechanism is used in an operation, firstly, the position of the pull rod 3 is sleeved with the limiting rod 8, so that the two nail feet 100 are prevented from approaching each other when the puncture-burying mechanism 5 is driven to work. Then, two nail feet 100 of the bone nail are placed in the pre-punched hole of the bone, high-pressure gas is introduced into the air inlet 4, the high-pressure gas enters the inner sliding cavity 11 along the air inlet hose 7, and then enters the pressure cavity 9 of the nail feet 100 through the air inlet hose 7, due to the fact that the thorn embedding mechanism 5 is arranged in the pressure cavity 9, when the air inlet 4 is filled with the high-pressure gas, the rear ends of the first connecting rod 51 and the second connecting rod 52 are pushed to move forwards, at the moment, the first thorn cone 54 and the second thorn cone 58 respectively extend out of the guide hole 10 until tooth sheets on the first connecting rod 51 collide with the far-end stop block 56 on the second connecting rod 52, and kinetic energy is offset.
After the action of the bone burying mechanism 5 is completed, the limiting rod 8 is taken down, high pressure is continuously introduced from the air inlet 4, air enters the inner sliding cavity 11 through the air inlet hose 7, pressure is generated in the inner sliding cavity 11, the sliding block 6 is forced to slide in the inner sliding cavity 11, and due to the fact that the length of the pull rod 3 is fixed, the two bone nail heads 2 can be made to move oppositely, the two nail feet 100 are close to each other along the pull rod 3, the pressure of the broken bone of the bone nail and the fracture part is increased, and the contact force of the broken bone of the bone nail and the fracture part is adjusted by adjusting the air pressure.
After the operation, take out the negative pressure from air inlet 4, the atmospheric pressure of interior slide chamber 11 is the negative pressure state, bone nail head 2 and slider 6 are close to each other, and then two nail feet 100 keep away from each other, and simultaneously, pressure chamber 9 also is the negative pressure state, force to bury first thorn awl 54 and the second thorn awl 58 on the thorn mechanism 5 and be close to each other, and then indentation casing 1, it collides with near-end dog 55 on second connecting rod 52 to collide with separation blade 57 on first connecting rod 51, offset the kinetic energy on first thorn awl 54 and the second thorn awl 58, then extract the bone nail.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (6)
1. The utility model provides a high pressure inflatable bone nail which characterized in that: comprises two nail feet, a pull rod, two bone nail heads, two slide blocks, an air inlet hose and a plurality of thorn burying mechanisms;
the nail foot comprises a shell, a plurality of guide holes are formed in the shell, and a pressure cavity is formed in the shell; the two bone nail heads are respectively arranged above the two nail feet, an inner sliding cavity is arranged inside the bone nail heads, and an air inlet is arranged above the bone nail heads; the thorn burying mechanism comprises a thorn cone which is arranged in the guide hole; the slide block is clamped in the inner slide cavity and arranged at two ends of the pull rod;
the air inlet hose is communicated with the inner sliding cavity and the pressure cavity, and the air inlet hose is communicated with the air inlet and the inner sliding cavity, so that the air entering the pressure cavity from the air inlet pushes the stabbing cone of the stabbing mechanism out of the guide hole, and the air entering the inner sliding cavity from the air inlet acts on the sliding block, and the two bone nail heads and the two bone nail feet move oppositely;
the bone screw further comprises a limiting rod, wherein two ends of the limiting rod are respectively abutted against the two bone screw heads; when the high-pressure gas pushes the pricker of the pricker embedding mechanism to extend out of the guide hole, the limiting rod is placed on the pull rod to prevent the two nail feet from approaching each other, after the pricker is inserted into the bone, the limiting rod is taken down, the high-pressure gas is continuously introduced into the air inlet, so that the two nail feet move oppositely along the pull rod to compress the bone.
2. The high pressure, inflatable bone nail of claim 1, wherein:
the two stabbing cones of the stabbing mechanism are respectively a first stabbing cone and a second stabbing cone, and the moving directions of the first stabbing cone and the second stabbing cone are opposite;
bury thorn mechanism still includes parallel arrangement's first connecting rod and second connecting rod, first connecting rod rigid coupling in first thorn awl rear end, and second connecting rod rigid coupling in second thorn awl rear end, the one end that first thorn awl was kept away from to first connecting rod is equipped with the separation blade, and the one end that second thorn awl was kept away from to the second connecting rod is equipped with near-end dog and distal end dog, and near-end dog and distal end dog are located the both sides of separation blade.
3. The high pressure, inflatable bone nail of claim 2, wherein:
the first connecting rod and the second connecting rod are both racks, and a gear is arranged between the first connecting rod and the second connecting rod.
4. The high pressure, inflatable bone nail of claim 1, wherein:
each stabbing cone is provided with an annular sealing groove, a sealing ring is arranged in each annular sealing groove, and each annular sealing groove is located in the corresponding guide hole.
5. The high pressure, inflatable bone nail of claim 1, wherein:
the air inlet hose comprises a first section and a second section, wherein the first section is communicated with the air inlet and the inner slide cavity, and the second section is communicated with the inner slide cavity and the pressure cavity.
6. The high pressure, inflatable bone nail of claim 1, wherein:
a plurality of thorn burying mechanisms which are sequentially arranged along the vertical direction are arranged in the pressure cavity of each nail foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483160.1A CN111588458B (en) | 2020-06-01 | 2020-06-01 | High-pressure inflatable bone nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483160.1A CN111588458B (en) | 2020-06-01 | 2020-06-01 | High-pressure inflatable bone nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111588458A CN111588458A (en) | 2020-08-28 |
| CN111588458B true CN111588458B (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010483160.1A Expired - Fee Related CN111588458B (en) | 2020-06-01 | 2020-06-01 | High-pressure inflatable bone nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111588458B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10499969B2 (en) * | 2016-11-07 | 2019-12-10 | Mirus, Llc | Bone fixation screw with deployable anchors |
| CN209847348U (en) * | 2019-04-03 | 2019-12-27 | 常熟市第二人民医院 | Pedicle screw and rod structure |
-
2020
- 2020-06-01 CN CN202010483160.1A patent/CN111588458B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10499969B2 (en) * | 2016-11-07 | 2019-12-10 | Mirus, Llc | Bone fixation screw with deployable anchors |
| CN209847348U (en) * | 2019-04-03 | 2019-12-27 | 常熟市第二人民医院 | Pedicle screw and rod structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111588458A (en) | 2020-08-28 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Mingliang Inventor after: Du Rui Inventor after: Yu Xiyan Inventor after: Gao Pengju Inventor before: Yu Xiyan Inventor before: Gao Pengju |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211208 Address after: 256603 No. two, No. 661, the Yellow River Road, Shandong, Binzhou Applicant after: BINZHOU MEDICAL University Hospital Address before: 450000 East Construction Road No. 50, Erqi District, Zhengzhou City, Henan Province Applicant before: Yu Xiyan |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |