CN202515759U - Internal pressuring interlocking intramedullary nail device - Google Patents
Internal pressuring interlocking intramedullary nail device Download PDFInfo
- Publication number
- CN202515759U CN202515759U CN2012201922741U CN201220192274U CN202515759U CN 202515759 U CN202515759 U CN 202515759U CN 2012201922741 U CN2012201922741 U CN 2012201922741U CN 201220192274 U CN201220192274 U CN 201220192274U CN 202515759 U CN202515759 U CN 202515759U
- Authority
- CN
- China
- Prior art keywords
- intramedullary pin
- intramedullary nail
- intramedullary
- cover
- overcoat
- 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
Links
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 208000010392 Bone Fractures Diseases 0.000 abstract description 18
- 206010017076 Fracture Diseases 0.000 abstract description 14
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 238000007373 indentation Methods 0.000 abstract description 3
- 230000001225 therapeutic effect Effects 0.000 abstract description 3
- 230000035876 healing Effects 0.000 abstract description 2
- 208000006670 Multiple fractures Diseases 0.000 abstract 2
- 230000033001 locomotion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 206010016454 Femur fracture Diseases 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000014461 bone development Effects 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses an internal pressuring interlocking intramedullary nail device which is composed of an intramedullary nail outer covering (1), an intramedullary nail inner covering (2), a pressurizer (5), a connecting ring (6), a tail cap (3) and a plurality of locking bolts (4), and the pressurizer (5) can freely rotate around an axis of a connecting hole (24) of the intramedullary nail inner covering (2). When the internal pressuring interlocking intramedullary nail device is used, the intramedullary nail inner covering (2) and the intramedullary nail outer covering (1) are first fixed on two broken bones through the locking bolts (4), and then the pressurizer (5) is turned, the threaded connection of the pressurizer (5) and the intramedullary nail outer covering (1) enables the intramedullary nail outer covering (1) and the intramedullary nail inner covering (2) to be tensioned towards the indentation direction, and therefore the two broken bones are tensioned to achieve the purpose of pressing. The internal pressuring interlocking intramedullary nail device can reduce borne stress of an intranedullary nail, promote healing of a fracture, prevent the intramedullary nail from being broken, and improve the therapeutic effect of the fracture of four-limb long tubal bones.
Description
Technical field
This utility model relates to a kind of medically long bone fracture inner fixing device that is used for.
Background technology
Intramedullary pin has had the history in 70 years as a kind of bone fracture internal fixing device tool, and why it can be flourishing long time; Mainly be because it has demonstrated fully the Therapeutic Principle of BO; That is: the biological characteristics of attention bone protects the partial blood of fracture to supply to greatest extent, and does not harass the physiological environment of bone growth and development; Make the healing rate of fracture faster, prevent the generation of various complication.Intramedullary pin is not strong internal fixation to fixation of fractures, and it allows when suffering from the early stage active movement of limb, to produce small activity between the fracture end, and this fine motion can produce favourable strain between sclerite, thereby promotes callus formation.Also just because of this fine motion, cause fracture end unstable, thereby caused the generation of bone does not connect.Like the femur Fracture Simple, with existing intramedullary nail treatment, the bone does not connect incidence rate is 4%--12%, has caused enormous economic loss, has also caused very big misery to patient.
The utility model content
In order to solve the high problem of above-mentioned bone does not connect incidence rate.This utility model provide a kind of in pressurization interlocking intramedullary nail device, the technical scheme that this utility model adopted is: comprise by cover, a prelum, a clamping ring, a tail medicated cap and several lock screw in an intramedullary pin overcoat, the intramedullary pin and form; Described intramedullary pin overcoat is hollow tubular, and two screw via holes are arranged on it, and the one of which end is provided with female thread; Cover is solid column in the described intramedullary pin, at one end has a connecting hole on the face, has a circular section cannelure on the inwall of connecting hole; The other end is taper, on the side near guide finger, has a bit-avoiding slot; And on a side of taper, be provided with two screw thread via holes; Described prelum is an external thread structure; It is made up of an external screw thread body, joint pin and clamping ring mounting groove; It is installed on through described clamping ring in the circular section cannelure that overlaps in the intramedullary pin, and mounted prelum can be that the center rotates freely with the axle center of the connecting hole that overlaps in the intramedullary pin; On the described tail medicated cap external screw thread is arranged also; Described intramedullary pin coat suit puts in intramedullary pin, its female thread and the external screw thread body engagement that is installed in the vertical prelum of cover in the intramedullary pin, and formation connects; Described tail medicated cap can screw in the female thread of intramedullary pin overcoat through being threaded, so that its female end face seal is got up; Described lock screw can through cover in the intramedullary pin screw thread via hole and the screw via hole and the bit-avoiding slot of intramedullary pin overcoat; In use; Be fixed on cover and intramedullary pin overcoat in the intramedullary pin on the two joint skeletons that fracture through lock screw earlier; Turn prelum then; Prelum is threaded the direction tension of cover in intramedullary pin overcoat and the intramedullary pin to indentation with the intramedullary pin overcoat, thereby the skeleton that two joints fracture is strained, to reach the purpose of pressurization.
As a kind of improvement, also be provided with the guiding cotter way on the female thread inwall of described intramedullary pin overcoat, and the other end is a tapering point, suit timing in intramedullary pin overcoat and intramedullary pin, it can form the gradual change profile; Put in the described intramedullary pin and correspondingly be provided with guide finger, the guiding cotter way assembling that itself and intramedullary pin put outward is to prevent cover rotation each other in intramedullary pin overcoat and the intramedullary pin.
Improve as another kind, hexagonal counterbore in being provided with on the end face of described tail medicated cap, lock screw and prelum is so that be that erecting tools provides impetus when being threaded.
This utility model adopts the beneficial effect of above technical scheme to be: interior pressurization interlocking intramedullary nail is through interior pressue device; Make the fracture two ends produce pressurization; Reach the held stationary effect; And reduce the suffered stress of intramedullary pin, and promote union of fracture and prevent the intramedullary pin fracture, improve the therapeutic effect of long bone fracture.
Description of drawings
Fig. 1 is the package assembly sketch map of this utility model;
Fig. 2 is the structural representation that dissects of the A portion of this utility model in Fig. 1;
Fig. 3 is this utility model assembling exploded view.
Among the figure, cover in the 1 intramedullary pin overcoat, 2 intramedullary pins, 3 tail medicated caps, 4 lock screw, 5 prelums; 6 clamping rings, 11 screw via holes, 12 female threads, 13 guiding cotter ways, 14 tapering points; 21 screw thread via holes, 22 bit-avoiding slots, 23 guide fingers, 24 connecting holes, 25 circular section cannelures; 32 external screw threads, 31,41,51 interior hexagonal counterbores, 52 external screw thread bodies, 53 joint pins, 54 clamping ring mounting grooves.
The specific embodiment
Like Fig. 1, shown in Figure 3, this utility model comprises by overlapping in an intramedullary pin overcoat 1, an intramedullary pin
2, prelum 5, clamping ring 6, tail medicated cap 3 and several lock screw 4 are formed; As shown in Figure 2, described intramedullary pin overcoat 1 is hollow tubular, and two screw via holes 11 are arranged on it; The one of which end is provided with female thread 12, and cover 2 is solid column in the described intramedullary pin, at one end has a connecting hole 24 on the face; Have a circular section cannelure 25 on the inwall of connecting hole 24, the other end is taper, on the side near guide finger 23; Have a bit-avoiding slot 22, and on a side of taper, be provided with two screw thread via holes 21; Described prelum 5 is an external thread structure; It is made up of an external screw thread body 52, joint pin 53 and clamping ring mounting groove 54; It is installed on through described clamping ring 6 in the circular section cannelure 25 of cover 2 in the intramedullary pin, and mounted prelum 5 can be that the center rotates freely with the axle center of the connecting hole 24 of cover 2 in the intramedullary pin; On the described tail medicated cap 3 external screw thread 32 is arranged also; Described intramedullary pin overcoat 1 is sleeved on and overlaps in the intramedullary pin on 2, its female thread 12 and the external screw thread body that is installed in cover 2 vertical prelums 5 in the intramedullary pin 52 engagements, and formation connects; Described tail medicated cap 3 can screw in the female thread 12 of intramedullary pin overcoat 1 through being threaded, it there is the end face seal of female thread 12; Described lock screw 4 can be through the screw thread via hole 21 of cover 2 in the intramedullary pin and the screw via hole 11 and the bit-avoiding slot 22 of intramedullary pin overcoat 1; In use; Be fixed on cover 2 in the intramedullary pin and intramedullary pin overcoat 1 on the two joint skeletons that fracture through lock screw 4 earlier; The turn prelum 5 then; Prelum 5 is threaded the direction tension of cover 2 in intramedullary pin overcoat 1 and the intramedullary pin to indentation with intramedullary pin overcoat 1, thereby the skeleton that two joints fracture is strained, to reach the purpose of pressurization.
As shown in Figure 3, also be provided with guiding cotter way 13 on female thread 12 inwalls of described intramedullary pin overcoat 1, and the other end is a tapering point 14, when 2 assemblings of cover in intramedullary pin overcoat 1 and the intramedullary pin, it can form the gradual change profile; Correspondingly be provided with guide finger 23 on the cover 2 in the described intramedullary pin, its with intramedullary pin overcoat 1 on 13 assemblings of guiding cotter way to prevent that cover 2 rotates each other in intramedullary pin overcoat 1 and the intramedullary pin; Hexagonal counterbore 31,41,51 in being provided with on the end face of described tail medicated cap 3, lock screw 4 and prelum 5 is so that be that erecting tools provides impetus when being threaded.
The above-mentioned specific embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as the technology contents essence of being made according to the disclosed technical scheme of this patent is identical or any change or the modification that are equal to, all fall into the scope that this patent comprises.
Claims (3)
1. pressurization interlocking intramedullary nail device in a kind has several lock screw (4), it is characterized in that: also comprise by cover (2), a prelum (5), a clamping ring (6), a tail medicated cap (3) in an intramedullary pin overcoat (1), the intramedullary pin and form; Described intramedullary pin overcoat (1) is hollow tubular, and two screw via holes (11) are arranged on it, and the one of which end is provided with female thread (12); Cover (2) is solid column in the described intramedullary pin, at one end has a connecting hole (24) on the face, has a circular section cannelure (25) on the inwall of connecting hole (24); The other end is taper, on the side near guide finger (23), has a bit-avoiding slot (22); And on a side of taper, be provided with two screw thread via holes (21); Described prelum (5) is an external thread structure; It is made up of an external screw thread body (52), joint pin (53) and clamping ring mounting groove (54); It is installed on through described clamping ring (6) in the circular section cannelure (25) of cover (2) in the intramedullary pin, and mounted prelum (5) can be that the center rotates freely with the axle center of the connecting hole (24) of cover (2) in the intramedullary pin; External screw thread (32) is also arranged on the described tail medicated cap (3); Described intramedullary pin overcoat (1) is sleeved on and overlaps in the intramedullary pin on (2), its female thread (12) and external screw thread body (52) engagement that is installed in cover (2) vertical prelum (5) in the intramedullary pin, and formation connects; Described tail medicated cap (3) can screw in the female thread (12) of intramedullary pin overcoat (1) through being threaded; Described lock screw (4) can be passed the screw thread via hole (21) of cover (2) in the intramedullary pin and the screw via hole (11) and the bit-avoiding slot (22) of intramedullary pin overcoat (1).
2. pressurization interlocking intramedullary nail device in as claimed in claim 1 is characterized in that: also be provided with guiding cotter way (13) on female thread (12) inwall of described intramedullary pin overcoat (1), and the other end is tapering point (14); Correspondingly be provided with guide finger (23) on the cover (2) in the described intramedullary pin.
3. according to claim 1 or claim 2 interior pressurization interlocking intramedullary nail device is characterized in that: hexagonal counterbore (31,41,51) in being provided with on the end face of described tail medicated cap (3), lock screw (4) and prelum (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201922741U CN202515759U (en) | 2012-05-02 | 2012-05-02 | Internal pressuring interlocking intramedullary nail device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201922741U CN202515759U (en) | 2012-05-02 | 2012-05-02 | Internal pressuring interlocking intramedullary nail device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202515759U true CN202515759U (en) | 2012-11-07 |
Family
ID=47098735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201922741U Expired - Fee Related CN202515759U (en) | 2012-05-02 | 2012-05-02 | Internal pressuring interlocking intramedullary nail device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202515759U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783881A (en) * | 2015-05-20 | 2015-07-22 | 陈伟 | Minimally invasive intramedullary fixing device for clavicle fracture |
| CN107223040A (en) * | 2014-05-09 | 2017-09-29 | 萨维奇医疗设计有限责任公司 | Medullary fixation device and system in hipbone and femoral fracture operation |
| CN113101017A (en) * | 2021-05-10 | 2021-07-13 | 北京智康汇成科技有限公司 | Extramedullary Axial Compression Fixation of Femoral Prosthesis |
| CN113143545A (en) * | 2021-05-10 | 2021-07-23 | 北京智康汇成科技有限公司 | Intramedullary axial compression fixation prosthesis for metaphyseal bone defects |
-
2012
- 2012-05-02 CN CN2012201922741U patent/CN202515759U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107223040A (en) * | 2014-05-09 | 2017-09-29 | 萨维奇医疗设计有限责任公司 | Medullary fixation device and system in hipbone and femoral fracture operation |
| CN107223040B (en) * | 2014-05-09 | 2020-11-24 | 萨维奇医疗设计有限责任公司 | Intramedullary fixation devices and systems for hip and femoral fracture surgery |
| CN104783881A (en) * | 2015-05-20 | 2015-07-22 | 陈伟 | Minimally invasive intramedullary fixing device for clavicle fracture |
| CN113101017A (en) * | 2021-05-10 | 2021-07-13 | 北京智康汇成科技有限公司 | Extramedullary Axial Compression Fixation of Femoral Prosthesis |
| CN113143545A (en) * | 2021-05-10 | 2021-07-23 | 北京智康汇成科技有限公司 | Intramedullary axial compression fixation prosthesis for metaphyseal bone defects |
| CN113143545B (en) * | 2021-05-10 | 2025-02-07 | 北京智康汇成科技有限公司 | Intramedullary axial compression fixation prosthesis for metaphyseal bone defects |
| CN113101017B (en) * | 2021-05-10 | 2025-02-07 | 北京智康汇成科技有限公司 | Extramedullary axial compression fixation of femoral prosthesis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202515759U (en) | Internal pressuring interlocking intramedullary nail device | |
| CN103550003A (en) | Easily-removing implant device and screwing-out tool thereof | |
| CN204092147U (en) | A kind of patella fixture | |
| CN203609529U (en) | Easily-taken-out implant device and back-out tool thereof | |
| CN201692040U (en) | Two-way pressing screw assembly | |
| CN201519187U (en) | Locking compression bone plate | |
| CN201759663U (en) | Locking type anterior cervical plate system | |
| CN108324357A (en) | A kind of minimally invasive drift fixing bracket device | |
| CN204133596U (en) | A kind of synthetism Wicresoft locking device | |
| CN203609501U (en) | Self-tapping locking screw | |
| CN204133595U (en) | Novel orthopaedics Medical screw | |
| CN208822942U (en) | A minimally invasive drift fixed stent device | |
| CN201365973Y (en) | Anti-rotation self-locking mother-child-type intramedullary spike | |
| CN203506857U (en) | Biological screw for injection and slow release of biological agents | |
| CN202637079U (en) | Needle fixing clamp | |
| CN203506859U (en) | Novel hollow bone nail | |
| CN204033458U (en) | Femur gamma type intramedullary nail with lock | |
| CN202365899U (en) | One-way pedicle screw with rotatable type nail cap | |
| CN202714915U (en) | Bone-setting screw | |
| CN201404279Y (en) | External fixation bracket for fracture | |
| CN203829025U (en) | Combined-type bone nail | |
| CN203576623U (en) | Straight locking plate for ulna and radius | |
| CN201642284U (en) | Combined clavicle intramedullary nail | |
| CN202960733U (en) | Universal pressurized locking screw structure | |
| CN203291001U (en) | Thread type lag screw system and special composite screw driver thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130502 |