CN209253076U - A kind of bone screw assembly - Google Patents
A kind of bone screw assembly Download PDFInfo
- Publication number
- CN209253076U CN209253076U CN201821975195.1U CN201821975195U CN209253076U CN 209253076 U CN209253076 U CN 209253076U CN 201821975195 U CN201821975195 U CN 201821975195U CN 209253076 U CN209253076 U CN 209253076U
- Authority
- CN
- China
- Prior art keywords
- cavity
- bone
- outer shell
- piston
- gripping block
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of bone screw assemblies, including bone nail and extractor for bone-pin, extractor for bone-pin includes outer shell barrel, the fixed plate that outer shell barrel is divided into the first cavity and the second cavity is equipped in outer shell barrel, it is equipped with sliding in first cavity and is connected to the intracorporal piston of the first chamber, piston rod is fixed on piston, one end of piston rod is inserted into the second cavity, the one end of piston rod far from piston is hinged with several connecting rods along the axle center of piston rod is circumferentially equidistant, the other end of connecting rod is hinged with gripping block, outer shell barrel offers sliding slot compatible with gripping block far from the end of the first cavity, one end of gripping block is equipped with pressure sensor；Outer shell barrel is connected with micro air pump close to the end of the first cavity, the other end of micro air pump is connected with handle, pass through above-mentioned setting, extractor for bone-pin can be different with binding nut specification bone nail, avoid the trouble that in use process and follow-up work amount increases, there is preferable clamping dynamics simultaneously, and nut can be prevented to be caught broken.
Description
Technical field
The utility model relates to medical instruments field, in particular to a kind of bone screw assembly.
Background technique
Bone nail is the common medical instrument of orthopaedics, is used for fixation of bone fragments, after knochenbruch healing, needs to take out bone nail.Mesh
There are two types of preceding clinically common bone nails: threaded bone nail with without type thread bone nail.When threaded fixed taking-up, spiral shell is generally used
Silk knife screws out bone nail.For not threaded bone nail, need to handle bone nail cap with bone nail clamp during taking out firmly outside
It pulls out.
Existing extractor for bone-pin is in use, diversified in specifications due to bone nail nut hexagon ring, needs replacing not
It carries out taking nail with the bone-nail removing tongs of size specification, operation needs to prepare multiple bone-nail removing tongs, and replacement is inconvenient, and process is numerous
Trivial, replacement is inconvenient, delays operating time, and it is postoperative need the multiple bone-nail removing tongs of cleaning and sterilizing, the problem of workload increases,
On the other hand, it since extractor for bone-pin clamping force is inadequate, just needs to clamp bone nail again and pulls it, will certainly be brought to patient
Biggish pain, moreover extractor for bone-pin is in clamping process it is possible that the phenomenon that bone nail nut is caught broken.
Utility model content
The purpose of the utility model is to provide a kind of bone screw assembly, bone that extractor for bone-pin can be different with binding nut specification
Nail avoids the trouble that in use process and follow-up work amount increases, while having preferable clamping dynamics, and can prevent nut
It is caught broken.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of bone screw assembly, packet
Bone nail and extractor for bone-pin are included, the extractor for bone-pin includes outer shell barrel, is equipped in the outer shell barrel outer shell barrel being divided into the
The fixed plate of one cavity and the second cavity, the interior piston for being equipped with sliding and being connected to the first cavity wall of first cavity are described
Piston rod is fixed on piston, one end of the piston rod is inserted into the second cavity, the one end of the piston rod far from piston
Several connecting rods are hinged with along the axle center of piston rod is circumferentially equidistant, the other end of the connecting rod is hinged with gripping block, the outer shell barrel
End far from the first cavity offers sliding slot compatible with the gripping block, gripping block edge under the action of piston rod
The glide direction of sliding slot collapse or scatter simultaneously, the gripping block, which is used to clamp one end of bone nail, is equipped with pressure sensor；
The outer shell barrel is connected with micro air pump close to the end of the first cavity, and the other end of the micro air pump is connected with handle, when
When the pressure sensor detects that the pressure between gripping block and the nut of bone nail is equal to or more than setting value, make micro air pump
Stopping is inflated the second cavity.
Further, one end of the nut of the gripping block clamping bone nail is equipped with rubber pad.
Further, the gripping block is equipped with the first lead slot of L-type, and the outer shell barrel side wall offers the second lead
Slot, the micro air pump outer wall offer the third wire lead slot being connected to the second wire lead slot, and the outer shell barrel offers connection
The link slot of one wire lead slot and the second wire lead slot.
Further, the rear and front end of first cavity is equipped with buffer stopper.
Further, the side wall of the piston is equipped with sealing ring.
Further, the side wall of the handle is equipped with convenient for hand-held flat portion.
Further, the handle is equipped with anticreep handle far from the end of micro air pump.
Further, the mounting groove for placing control unit is offered in the handle.
In conclusion the utility model has the following beneficial effects:
A kind of bone screw assembly, by piston move forward and backward drive outer shell barrel on gripping block simultaneously collapse or opening, reach
The bone nail different to extractor for bone-pin clamping nut specification, avoids the trouble that in use process and follow-up work amount increases, leads to
It crosses micro air pump and the first cavity or the second cavity is inflated and reach clamping effect, while pressure sensor is set, so that pressure
Force snesor and micro air pump cooperation avoid bone nail nut from being crushed during clamped, and extractor for bone-pin clamps the tool of nut
Gymnastics is made as follows: open the switch of micro air pump, micro air pump starts to the inflation of the first cavity, the intracorporal piston of the first chamber along
The side wall of first cavity slides forward, drives piston rod to extend to the second cavity and connecting rod is pushed to slide outward, gripping block clamps bone
The nut of nail, micro air pump is inflated to the second cavity so that piston is retracted backward, drive piston rod slide backward promotion connecting rod to
The nut that interior gathering makes gripping block clamp bone nail makes miniature when the pressure sensor detects that clamping force reaches setting value
Air pump stops air inlet, extracts bone nail from patient's body finally by extractor for bone-pin.
Detailed description of the invention
Fig. 1 is the main view of the utility model；
Fig. 2 is the explosive view of the utility model；
Fig. 3 is the overall structure diagram of the utility model；
Fig. 4 is the cross-sectional view of the utility model；
Fig. 5 is the internal structure chart of the utility model；
Fig. 6 is the schematic diagram of the gripping block of the utility model；
Fig. 7 is the schematic internal view of the outer shell barrel of the utility model.
In figure: 1, bone nail；2, extractor for bone-pin；21, outer shell barrel；211, the first cavity；212, the second cavity；213, second
Wire lead slot；214, link slot；215, buffer stopper；22, fixed plate；23, piston；231, sealing ring；24, piston rod；25, connecting rod；
26, gripping block；261, rubber pad；262, first lead slot；27, sliding slot；3, pressure sensor；4, micro air pump；41, third is drawn
Wire casing；5, handle；51, flat portion；52, anticreep handle；53, mounting groove；6, control unit.
Specific embodiment
The utility model will be further described below with reference to the accompanying drawings.
As shown in figs. 1-7, a kind of bone screw assembly, the extractor for bone-pin 2 including bone nail 1 and clamping 1 nut of bone nail, the bone
Nail extractor 2 includes outer shell barrel 21, is equipped in the outer shell barrel 21 outer shell barrel 21 being divided into the first cavity 211 and the second cavity
212 fixed plate 22, the interior piston 23 for being equipped with sliding and being connected to 211 side wall of the first cavity of the first cavity 211, the piston
It is fixed with piston rod 24 on 23, through-hole compatible with the piston rod 24, the piston rod are offered in the fixed plate 22
24 one end is inserted into through-hole and extends to the second cavity 212, and the described one end of piston rod 24 far from piston 23 is along piston rod
24 axle center is circumferentially equidistant to be hinged with several connecting rods 25 (one end of piston rod 24 described in the present embodiment far from piston 23 is along piston
The axle center of bar 24 is circumferentially equidistant to be hinged with three pairs of connecting rods 25), the other end of the connecting rod 25 is hinged with gripping block 26, the shell
21 ends far from the first cavity 211 of cylinder offer sliding slot 27 compatible with the gripping block 26, and the gripping block 26 is in work
It collapses or scatters simultaneously along the glide direction of sliding slot 27 under the action of stopper rod 24, the gripping block 26 is for clamping bone nail 1
One end is equipped with pressure sensor 3；The outer shell barrel 21 is connected with micro air pump 4 close to the end of the first cavity 211, described micro-
The other end of type air pump 4 is connected with handle 5.
One end that the gripping block 26 clamps the nut of bone nail 1 is equipped with rubber pad 261, by setting rubber pad 261 so that
During gripping block 26 clamps and takes out bone nail 1, slipping phenomenon is avoided the occurrence of, and then avoid again to the nut of bone nail 1
It is clamped fixed trouble.
The gripping block 26 is equipped with the first lead slot 262 of L-type, and 21 side wall of outer shell barrel offers the second wire lead slot
213,4 outer wall of micro air pump offers the third wire lead slot 41 being connected to the second wire lead slot 213, and the outer shell barrel 21 opens up
There is the link slot 214 of connection first lead slot 262 and the second wire lead slot 213, by the way that above structure is arranged, so that pressure sensor
Connecting line on 3 passes sequentially through first lead slot 262, link slot 214, the second wire lead slot 213 and third wire lead slot 41 and is connected to
The control unit 6 being mounted in mounting groove 53, while avoiding the connection of pressure sensor 3 in 2 use process of extractor for bone-pin
The phenomenon that line gets muddled.
The rear and front end of first cavity 211 is equipped with buffer stopper 215, avoids piston 23 by the way that buffer stopper 215 is arranged
It is sent out during fierce collision occurs with fixed plate 22 during sliding forward or slides backward with the end of outer shell barrel 21
Raw fierce collision, and then avoid result in and lead to unnecessary fiber crops because gripping block 26 is caused to fall off from the nut of bone nail 1 for collision
It is tired.
The side wall of the piston 23 is equipped with sealing ring 231, by opening up annular groove on the side wall of piston 23, and in ring
Sealing ring 231 is arranged in shape slot 232 so that piston 23 in the first cavity 211 in slipping piston 23 by the first cavity
211 are separated into closed two chambers.
The side wall of the handle 5 is equipped with convenient for hand-held flat portion 51, when bone nail 1 is threaded bone nail 1, needs to twist hand
Bone nail 1 is screwed out people's bone by handle 5, and by the way that flat portion 51 is arranged, the handle 5 is equipped with anti-skid chequer, avoids the process in joystick knob 5
In have skidded so that avoid increase patient pain.
The handle 5 is connected with anticreep handle 52 far from the end thread of micro air pump 4, when bone nail 1 is non-threaded bone nail 1
When, when operator needs to extract bone nail 1 by extractor for bone-pin 2, avoid during using extractor for bone-pin 2, because rubber sleeve is led
It causes operator that handle 5 falls off and causes contingency.
The mounting groove 53 for placing control unit 6 is offered in the handle 5, will be controlled by setting mounting groove 53 single
Member 6 is placed in handle 5, saves the space of extractor for bone-pin 2, so that operator's operation is more convenient.
The basic functional principle of the utility model are as follows:
A kind of bone screw assembly, by piston 23 move forward and backward drive outer shell barrel 21 on gripping block 26 simultaneously collapse or open
It opens, reaches extractor for bone-pin 2 and clamp the different bone nail 1 of nut specification, avoid in use process and follow-up work amount increases
Trouble, is inflated to the first cavity 211 or the second cavity 212 by micro air pump 4 and reaches clamping effect, while pressure is arranged
Sensor 3, so that pressure sensor 3 and the cooperation of micro air pump 4 avoid 1 nut of bone nail from being crushed during clamped, bone nail
The concrete operations that extractor 2 clamps nut are as follows: opening the switch of micro air pump 4, micro air pump 4 starts to the first cavity 211
It inflates, the piston 23 in the first cavity 211 slides forward along the side wall of the first cavity 211, drives piston rod 24 to the second chamber
Body 212, which extends, pushes connecting rod 25 to slide outward, and gripping block 26 clamps the nut of bone nail 1, and micro air pump 4 is filled to the second cavity 212
For gas so that piston 23 is retracted backward, driving piston rod 24 to slide promotion connecting rod 25 backward and inwardly collapse makes gripping block 26 clamp bone nail
1 nut makes micro air pump 4 stop air inlet, finally leads to when the pressure sensor 3 detects that clamping force reaches setting value
It crosses extractor for bone-pin 2 and extracts bone nail 1 from patient's body.
The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range
The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.
Claims (8)
1. a kind of bone screw assembly, including bone nail (1) and extractor for bone-pin (2), it is characterised in that: extractor for bone-pin (2) packet
It includes outer shell barrel (21), is equipped in the outer shell barrel (21) and outer shell barrel (21) is divided into the first cavity (211) and the second cavity
(212) fixed plate (22), the interior piston for being equipped with sliding and being connected to the first cavity (211) side wall of first cavity (211)
(23), it is fixed with piston rod (24) on the piston (23), one end of the piston rod (24) is inserted into the second cavity (212)
Interior, the one end of the piston rod (24) far from piston (23) is hinged with several connecting rods along the axle center of piston rod (24) is circumferentially equidistant
(25), the other end of the connecting rod (25) is hinged with gripping block (26), end of the outer shell barrel (21) far from the first cavity (211)
Portion offers the compatible sliding slot (27) with the gripping block (26), the gripping block (26) edge under the action of piston rod (24)
The glide direction of sliding slot (27) collapse or scatter simultaneously, the gripping block (26) is used to clamp one end of bone nail (1) and be equipped with
Pressure sensor (3)；The outer shell barrel (21) is connected with micro air pump (4) close to the end of the first cavity (211), described miniature
The other end of air pump (4) is connected with handle (5), when the pressure sensor (3) detects the spiral shell of gripping block (26) Yu bone nail (1)
When pressure between cap is equal to or more than setting value, micro air pump (4) is made to stop being inflated the second cavity (212).
2. a kind of bone screw assembly according to claim 1, it is characterised in that: gripping block (26) clamping bone nail (1)
One end of nut is equipped with rubber pad (261).
3. a kind of bone screw assembly according to claim 1, it is characterised in that: the gripping block (26) is equipped with the of L-type
One wire lead slot (262), outer shell barrel (21) side wall offer the second wire lead slot (213), and micro air pump (4) outer wall opens up
There is the third wire lead slot (41) being connected to the second wire lead slot (213), the outer shell barrel (21) offers connection first lead slot
(262) with the link slot (214) of the second wire lead slot (213).
4. a kind of bone screw assembly according to claim 1, it is characterised in that: the rear and front end of first cavity (211)
It is equipped with buffer stopper (215).
5. a kind of bone screw assembly according to claim 1, it is characterised in that: the side wall of the piston (23) is equipped with sealing
It encloses (231).
6. a kind of bone screw assembly according to claim 1, it is characterised in that: the side wall of the handle (5), which is equipped with, is convenient for hand
The flat portion (51) held.
7. a kind of bone screw assembly according to claim 1, it is characterised in that: the handle (5) is far from micro air pump (4)
End is equipped with anticreep handle (52).
8. a kind of bone screw assembly according to claim 1, it is characterised in that: offer in the handle (5) for placing
The mounting groove (53) of control unit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821975195.1U CN209253076U (en) | 2018-11-28 | 2018-11-28 | A kind of bone screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821975195.1U CN209253076U (en) | 2018-11-28 | 2018-11-28 | A kind of bone screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209253076U true CN209253076U (en) | 2019-08-16 |
Family
ID=67564747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821975195.1U Active CN209253076U (en) | 2018-11-28 | 2018-11-28 | A kind of bone screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209253076U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069198A (en) * | 2021-05-07 | 2021-07-06 | 北京力达康科技有限公司 | Novel nail puller |
| CN113520567A (en) * | 2021-08-05 | 2021-10-22 | 河南科技大学第一附属医院 | Nail taking device for orthopedics department |
-
2018
- 2018-11-28 CN CN201821975195.1U patent/CN209253076U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069198A (en) * | 2021-05-07 | 2021-07-06 | 北京力达康科技有限公司 | Novel nail puller |
| CN113069198B (en) * | 2021-05-07 | 2022-08-09 | 北京力达康科技有限公司 | Novel nail puller |
| CN113520567A (en) * | 2021-08-05 | 2021-10-22 | 河南科技大学第一附属医院 | Nail taking device for orthopedics department |
| CN113520567B (en) * | 2021-08-05 | 2022-06-03 | 河南科技大学第一附属医院 | Nail taking device for orthopedics department |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209253076U (en) | A kind of bone screw assembly | |
| US6488695B1 (en) | Ophthalmologic surgical probe | |
| US20030171762A1 (en) | Instrument dispenser | |
| EP3191161A1 (en) | Reinforcing slider for surgical hand tool | |
| CN203777039U (en) | Pressing-type combined extractor used for slipped screw | |
| US20030060830A1 (en) | Instrument for the implant of a surgical plate for osteosynthesis | |
| EP2228021B1 (en) | A device for elastic ligature of tissues | |
| CN110720974A (en) | Nail extractor for orthopedic operation | |
| CN103211637A (en) | Loop ligature apparatus for treating hemorrhoid | |
| EP0882467A3 (en) | Syringe for medicinal purposes | |
| CN110604854B (en) | Needle head dismounting device | |
| CN203244424U (en) | Hemorrhoid loop ligature device | |
| CN209360995U (en) | A kind of improved micropin hair transplant hair follicle plantation pen | |
| CN208287046U (en) | A kind of Transureteroscopic pneumatic lithotripsy device | |
| CN102293629A (en) | Disposable endoscope sheath with telescopic mirror bridge | |
| CN103479404A (en) | Hand-shape-adaptable multifunctional surgical operation handle | |
| CN208319305U (en) | A kind of Pop-up nail tail fracturer | |
| CN201115676Y (en) | Medical bone taking out device | |
| CN207118942U (en) | A kind of dental fractures screw extractor | |
| CN209713093U (en) | A kind of Novel bone-holder | |
| CN101836880A (en) | Adjustable wheel axle medical forceps | |
| CN109771062A (en) | A kind of department of stomatology surgical instrument | |
| CN219700011U (en) | Needle holder for operating room | |
| CN209474729U (en) | A kind of medial forceps | |
| CN209629795U (en) | A kind of intramedullary nail proximal end bolt is oriented to locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |