CN209153953U - A kind of hand orthopaedics drilling nail-fetching device - Google Patents
A kind of hand orthopaedics drilling nail-fetching device Download PDFInfo
- Publication number
- CN209153953U CN209153953U CN201821602604.3U CN201821602604U CN209153953U CN 209153953 U CN209153953 U CN 209153953U CN 201821602604 U CN201821602604 U CN 201821602604U CN 209153953 U CN209153953 U CN 209153953U
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- CN
- China
- Prior art keywords
- drive rod
- fixed link
- outer cylinder
- cartridge device
- nail
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- 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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Abstract
The utility model relates to technical field of medical equipment, in particular to hand orthopaedics drilling nail-fetching device.Hand orthopaedics drilling nail-fetching device includes handle (1), fixed link (2) and cartridge device (4), it is characterized in that, handle (1) is fixedly connected with the rear end of fixed link (2), and cartridge device (4) is connect by a drive rod (6) with the front end of fixed link (2)；Fixed link (2) front end and cartridge device (4) are placed in an outer cylinder, and the collet of cartridge device (4) is stretched out from the outward opening of outer cylinder front end, and fixed link is connected by bearing, bearing holder (housing, cover) and outer cylinder.Hand orthopaedics drilling nail-fetching device, small volume and less weight are not limited by visual area.It can not only be used for drilling equipment when screw placement, also can be used as device when broken nail takes out, all provide protection to surrounding soft tissue when the two is applied.And simple process and low cost, high reliablity are practical.It brings great convenience to surgical, brings glad tidings to vast bone fracture disease patient.
Description
Technical field
The utility model relates to technical field of medical equipment, in particular to hand orthopaedics drilling nail-fetching device.
Background technique
Currently, the use of the interior fixed implantation of screw being still the main way of bone surgery.It is more using tiny screw
It is the positions such as brothers, joint.Because membership credentials are more accurate, bone amount is rare, micromanipulation, and guarantor as much as possible should be all adhered to
Stay healthy sclerotin.
When traditional electric drill punches, impact force is big, speed is fast, revolving speed is high, and the splitting of Yi Fasheng bone block, drilled at screw way displacement
The critical tissue around deep macrolesion.When tiny screw takes out, usually head recess deformation, screw thread stripped thread, operation easily goes out by force
Now fracture, bone defect even broken nail residual can not be taken out.Traditional means to save the situation is drilled along screw long axis direction, is then used
The tools such as son, bone forceps take out broken bone and screw together.Caused by bone defect it is big, or even send out fracture again, patient caused secondary
Conflict between doctors and patients are deepened in injury.Therefore, the implantation and taking-up risk all with higher of tiny screw.Clinically there is an urgent need to one
It plants light, stable drilling and takes nail tool.
In existing follow-on nail-fetching device, one kind is pulled out after clamping screw using assist.It is lacked
Be trapped in one side device bulky, discomfort in the lesser situation in the visual areas such as brothers in install and use；Another aspect violence
It extracts and destroys screw thread, easily cause second fracture.Another kind of is to take nail sleeve using special designing, has a disadvantage in that: needing list
The festive lantern or size solely to be matched using groove is larger not to meet operation requirement.Also, both of the above is in actual use process
In, it often still needs to drill around screw tail portion, clamp screws.Therefore, it is difficult to promote.
Utility model content
The purpose of this utility model is to provide a kind of hand orthopaedics drilling nail-fetching devices, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the utility model provides the following technical solutions:
A kind of hand orthopaedics drilling nail-fetching device, including handle, fixed link and cartridge device, the rear end of handle and fixed link
It is fixedly connected, cartridge device is connected by the front end of a drive rod and fixed link；
Fixed link front center protrudes outward to form a columned bearing block,
One bearing, is set on bearing block, has screw thread on the outside of the bearing holder (housing, cover) of bearing；
One fixture nut is set in the front end of bearing block, for locking bearing；
It is circular drive rod slot that the inside of bearing block, which is provided with a section, and the inner wall of drive rod slot is equipped with screw thread；
One drive rod, one end have screw thread and are threadedly engaged with drive rod slot, the other end and cartridge device of drive rod
Connection；So that drive rod is generated displacement in drive rod slot by matched screw thread rotation and cartridge device is driven to move；
The cartridge device, one end are connect with drive rod, and the other end is multi-claw type collet, and the cartridge device is frustum
Shape；
One outer cylinder, the outer cylinder is hollow, both ends open；It is sleeved on outside fixed link front end and cartridge device；A part of outer cylinder
For cylindrical section, cylinder bore is matched with fixed link, and a part of cylindrical section inner wall has the screw thread to match with bearing holder (housing, cover) outside,
Outer cylinder is connect with bearing holder (housing, cover) by the screw thread；The nearly cartridge device part of outer cylinder is the frustum section of necking, and multi-claw type collet is from cone
Platform section opening is stretched out.
Preferably, each pawl inner wall of the cartridge device is equipped with non-slip texture.Each pawl outer wall has guide rail on barrel, collet
It can only be along barrel oblique movement.The cartridge device is three-pawl type.
Preferably, the outer cylinder cylindrical section outer wall is equipped with anti-skid chequer.
Preferably, the connection of the drive rod and cartridge device is fixedly connected using detachable.Make cartridge device can also
With integral replacing, to adapt to the drill bit and screw of different model, the shape of different collets also regards the shape of different steel nails and special
Customization.
Fixture nut effect is limitation position of bearings, and position is mobile after preventing bearing to be used for a long time.
The utility model can be completed at the same time the drilling and taking-up of tiny screw.It is more traditional still with manual punching when drilling
Electric drill high stability.Inside diameter-adjustable is head diameter when taking-up, can get maximum matching degree.Screw head rotation is held tightly to take
Out, too deep aperture is avoided, protects sclerotin to greatest extent.
The nail-fetching device compared with prior art, the utility model has the beneficial effects that the hand orthopaedics drills is small and exquisite light
Just, it is not limited by visual area.It can not only be used for drilling equipment when screw placement, also can be used as device when broken nail takes out, the two application
When all give surrounding soft tissue provide protection.And simple process and low cost, high reliablity are practical.Give surgical band
Carry out great convenience, brings glad tidings to vast bone fracture disease patient.
Detailed description of the invention
Fig. 1 is the appearance diagram of the utility model.
Fig. 2 is fixed link front end and cartridge device sectional view.
Fig. 3 is fixed link schematic diagram in Fig. 2.
Fig. 4 is cartridge device schematic diagram in Fig. 2.
Fig. 5 is outer cylinder schematic diagram in Fig. 2.
Fig. 6 is drive rod schematic diagram in Fig. 2.
Fig. 7 is cartridge device schematic diagram in Fig. 2.
Fig. 8 is Fig. 2 centre bearer bush schematic diagram.
Fig. 9 is Fig. 2 middle (center) bearing schematic diagram.
Figure 10 is the utility model local appearance enlarged drawing.
Figure 11 is the utility model partial enlarged view.
Specific embodiment
The hand orthopaedics drilling nail-fetching device of the utility model, as shown in figs 1-9, including handle 1, fixed link 2 and collet
Device 4, handle 1 are fixedly connected with the rear end of fixed link 2, and cartridge device 4 is connect by a drive rod 6 with the front end of fixed link 2；
2 front center of fixed link protrudes outward to form a columned bearing block 21, and a bearing 9 is set on bearing block 21, bearing 9
Bearing holder (housing, cover) 8 on the outside of have screw thread；
One nut 7, is set in the front end of bearing block 21, is used for fixing bearing 8；The inside of bearing block 21 is provided with a section
Inner wall for circular drive rod slot 22, drive rod slot 22 is equipped with screw thread；One drive rod 6, one end have screw thread and with transmission
The matching of 22 shape of bar slot, the other end of drive rod 5 are connect with cartridge device 4；Drive rod 6 is being passed by matched screw thread rotation
It is generated in lever slot 22 and is displaced and cartridge device 4 is driven to move；The cartridge device 4, one end is connect with drive rod 6, another
End is multi-claw type collet, and the cartridge device is pyramidal；One outer cylinder 5, the outer cylinder is hollow, both ends open；It is sleeved on fixed link 2
Outside front end and cartridge device 4；A part of outer cylinder 5 is cylindrical section, and cylinder bore is matched with fixed link 2, the one of cylindrical section inner wall
The screw thread for partially having and matching on the outside of bearing holder (housing, cover) 8, connect outer cylinder 5 with bearing holder (housing, cover) 8 by the screw thread；The nearly collet of outer cylinder 5
The part of device 4 is the frustum section of necking, and multi-claw type collet is open from frustum section to be stretched out.Such as Figure 10, outside 5 cylindrical section of outer cylinder
Wall is equipped with anti-skid chequer 51.Cartridge device as described in Figure 11 is three-pawl type.Each pawl inner wall of the cartridge device 4 is equipped with screw thread 41.
Accessory installation process:
Vehicle has externally threaded bearing holder (housing, cover) to be sleeved on bearing outer ring, and bearing is sleeved in fixed link again, screws in nut and limits axis
Hold position, screw in drive rod, three valve collets are caught on drive rod, barrel is put on, by barrel screw thread and bearing holder (housing, cover) it is outer
Screw thread screws.It installs.
The course of work:
Left hand holds barrel, and the right hand holds the handle of fixed link tail portion, after swing handle, fixed link rotation, due to collet
It being stuck on drive rod, drive rod can not rotate, and drive rod is connected through a screw thread with fixed link, after fixed link rotation, transmission
Bar will move in slot, to drive collet mobile.Collet along barrel is oblique due to that can only move, so in the band of drive rod
Under dynamic, when direction of the drive rod to outside slot is mobile, collet is ejected barrel, gradually tightens, when direction of the drive rod into slot
Mobile, collet is pulled in barrel, gradually unclamps.
Claims (5)
- The nail-fetching device 1. a kind of hand orthopaedics drills, including handle (1), fixed link (2) and cartridge device (4), which is characterized in that Handle (1) is fixedly connected with the rear end of fixed link (2), and cartridge device (4) passes through the front end of a drive rod (6) and fixed link (2) Connection；Fixed link (2) front center protrudes outward to form a columned bearing block (21),One bearing (9) is set on bearing block (21), and the outside of the bearing holder (housing, cover) (8) of bearing (9) has screw thread；One nut (7), is set in the front end of bearing block (21), is used for fixing bearing (9)；It is circular drive rod slot (22) that the inside of bearing block (21), which is provided with a section, and the inner wall of drive rod slot (22) is equipped with spiral shell Line；One drive rod (6), one end have screw thread and are threadedly engaged with drive rod slot (22), the other end and folder of drive rod (6) Head device (4) connects；So that drive rod (6) is generated displacement in drive rod slot (22) by matched screw thread rotation and drives collet Device (4) movement；The cartridge device (4), one end are connect with drive rod (6), and the other end is multi-claw type collet, and the cartridge device is cone Mesa-shaped；One outer cylinder (5), the outer cylinder is hollow, both ends open；It is sleeved on fixed link (2) front end and cartridge device (4) outside；Outer cylinder (5) A part be cylindrical section, cylinder bore matches with fixed link (2), a part of cylindrical section inner wall with bearing holder (housing, cover) (8) outside The screw thread that side matches connect outer cylinder (5) with bearing holder (housing, cover) (8) by the screw thread；The part of the nearly cartridge device (4) of outer cylinder (5) For the frustum section of necking, multi-claw type collet is open from frustum section to be stretched out.
- The nail-fetching device 2. a kind of hand orthopaedics as described in claim 1 drills, which is characterized in that in each pawl of cartridge device Wall is equipped with screw thread (41).
- The nail-fetching device 3. a kind of hand orthopaedics as described in claim 1 drills, which is characterized in that the cartridge device is three-jaw Formula.
- The nail-fetching device 4. a kind of hand orthopaedics as described in claim 1 drills, which is characterized in that the outer cylinder cylindrical section outer wall It is equipped with anti-skid chequer (51).
- The nail-fetching device 5. a kind of hand orthopaedics as described in claim 1 drills, which is characterized in that the drive rod (6) and folder The connection of head device (4), is fixedly connected using detachable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821602604.3U CN209153953U (en) | 2018-09-29 | 2018-09-29 | A kind of hand orthopaedics drilling nail-fetching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821602604.3U CN209153953U (en) | 2018-09-29 | 2018-09-29 | A kind of hand orthopaedics drilling nail-fetching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209153953U true CN209153953U (en) | 2019-07-26 |
Family
ID=67332622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821602604.3U Expired - Fee Related CN209153953U (en) | 2018-09-29 | 2018-09-29 | A kind of hand orthopaedics drilling nail-fetching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209153953U (en) |
-
2018
- 2018-09-29 CN CN201821602604.3U patent/CN209153953U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 Termination date: 20200929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |