CN204931821U - Bridge joint internal fixation system outside proximal tibia - Google Patents

Bridge joint internal fixation system outside proximal tibia Download PDF

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Publication number
CN204931821U
CN204931821U CN201520312631.7U CN201520312631U CN204931821U CN 204931821 U CN204931821 U CN 204931821U CN 201520312631 U CN201520312631 U CN 201520312631U CN 204931821 U CN204931821 U CN 204931821U
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China
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proximal tibia
shaped
bridge joint
internal fixation
fixed block
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CN201520312631.7U
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Chinese (zh)
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张兰凤
李新阳
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TIANJIN WEIMAN BIOLOGICAL MATERIAL CO Ltd
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TIANJIN WEIMAN BIOLOGICAL MATERIAL CO Ltd
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Abstract

Outside this utility model proximal tibia, bridge joint internal fixation system comprises special-shaped block 1 and bar portion bridge joint internal fixation system (comprising U-shaped rod 5, fixed block 4, fixed block 6) outside head proximal tibia, and lock screw 2, ladder screw 3.Outside proximal tibia, special-shaped block 1 is golf clubs capitiform and has certain radian, well can fit with proximal tibia, its head end has locking screw thread hole 7, fitted by lock screw 2 and bone fixing, tail end inside has holes 9 to coordinate with U-shaped rod 5, tail end is provided with ladder screwed hole, realizes reliable fixing by ladder screw 3 and U-shaped rod; U-shaped rod assembles several fixed blocks 4 and fixed block 6, fixed block is fixed by lock screw and rod.This utility model pitman adopts U-shaped rod, prevent fixed block from the slippage of pitman end, the design of its head and the some draw-in grooves of main part adds the contact area with screw, makes U-shaped rod reach the fixing reliable connection of pin with the connection of special-shaped block and fixed block.

Description

Bridge joint internal fixation system outside proximal tibia
Technical field
Outside this utility model proximal tibia, bridge joint internal fixation system belongs to Fracture internal fixaiion implant technical field, is that one treats fracture of tibia, carries out the medical apparatus and instruments of broken ends of fractured bone replacement and fixation.
Background technology
Along with the fast development of society, people are inevitably subject to unexpected injury and cause fracture in life, work, and fracture of tibia is common classification of fracture clinically.In most cases, fracture of tibia is all caused by high-energy damages, and its complex forms of fracturing, treat more thorny, the main using steel plate of traditional surgical approaches, intramedullary pin, exterior fixation bracket are fixed.Interal fixation extensively need peel off periosteum, often causes the adverse consequencess such as nonunion; Though and intramedullary pin and exterior fixation bracket effectively can control fracture cripetura, angulation and rotation deformity, above operation completed more loaded down with trivial details, and the easy concurrent pin track infection of exterior fixation bracket, affect life and the limb function of patient.In addition, research finds, traditional surgical approaches has the effect of stress shielding to fracture site, causes physiological stress effectively by the sclerotin at Interal fixation position, can not decrease the physiological stimulation at this position, cause collagen fiber arrangement disorder and structural deterioration in canned paragraph bone, local bone cortex reduces, and bone strength weakens, osteoporosis, compressive property declines, and easily occurs postoperative fracture disunion.Due to above many shortcoming, impel people to start to introspect current treatment viewpoint, and then set up the viewpoint based on biology gradually, be i.e. viewpoint (bilogicalosteosynthesis, BO) that is biological, reasonably osteopathy.The core of BO is that the protection of pay abundant attention local soft tissue blood fortune and fracture fixation are strong and without the need to pressurization.In long-term Clinical Exploration, traditional operation method is maximized favourable factors and minimized unfavourable ones, devise bridge joint internal fixation system outside a kind of proximal tibia combined by special-shaped block outside proximal tibia and bridge joint internal fixtion, achieve good fixed effect.
Summary of the invention
The purpose of this utility model is that the one proposed for the weak point of the operation method of traditional treatment fracture of tibia is easy to operate, bridge joint internal fixation system outside the proximal tibia that biological property is good.
This utility model adopts following scheme to realize:
1) head and bar portion, lock screw, ladder screw is comprised.Head is special-shaped block outside proximal tibia, and bar portion is bridge joint internal fixation system, comprises fixed block, U-shaped pitman.
2) outside proximal tibia, special-shaped block head end designs according to skeleton anatomical structure, in golf clubs capitiform there is certain radian, well can fit with tibia, and it has locking screw thread hole, locking screw thread hole is designed to circular cone multi start thread hole, can realize reliably fixing with tibia; Middle part is provided with locking screw thread hole.
3) outside proximal tibia, special-shaped block tail end is inner porose coordinates with U-shaped pitman, and special-shaped block tail end arranges ladder screwed hole simultaneously, fixes special-shaped block and pitman by ladder screw, prevents special-shaped block to be connected with pitman and loosens, the reliable connection of both realizations.
4) U-shaped club head fluting, its head end with ladder screw is fitted tightly, and increase frictional force between the two, blocks screw by groove simultaneously and makes its fixed effect better; U-shaped rod main body section arranges several draw-in grooves, and the contact surface that lock screw loads when locking and between U-shaped rod increases, thus frictional force increases, and fixed block and U-shaped rod is connected and not easily loosens.
5) fixed block and pitman are slidably matched, can according to needs during operation, the position of adjustment fixed block, and the relative position making itself and fracture line keep best, avoids the stress occurred in traditional surgical approaches to concentrate, promote union of fracture.
6) for preventing fixed block from deviating from from one of pitman, pitman adopts U-shaped rod.
7) material of the present utility model is titanium alloy or pure titanium.
The beneficial effects of the utility model:
1) outside head proximal tibia of the present utility model, special-shaped block designs according to skeleton anatomical structure, in golf clubs capitiform there is certain radian, and it has locking screw thread hole, locking screw thread hole is designed to circular cone multi start thread hole, can realize well fitting with tibia and fixing;
2) special-shaped block tail end is inner porose coordinates with U-shaped pitman, and special-shaped block tail end arranges ladder screwed hole simultaneously, fixes special-shaped block and pitman by ladder screw, prevents special-shaped block to be connected with pitman and loosens, the reliable connection of both realizations; In addition U-shaped club head fluting, its head end with ladder screw is fitted tightly, and increase frictional force between the two, blocks screw by groove simultaneously and makes its fixed effect better;
3) fixed block and being slidably matched of pitman are designed, and make operation technique have more motility, by adjusting the position of fixed block, can make the relative position that itself and fracture line keep best; For preventing fixed block from deviating from from one of pitman, pitman adopts U-shaped rod.
4) this special-shaped block for specific part design combines the advantage of conventional steel plates head design, evaded again the shortcoming that it exists simultaneously, bar portion bridge connected fixes the defect well avoiding traditional surgical approaches stress shielding, make physiological stress can effectively by the sclerotin of fixed position, recover the physiological stimulation at this position, reduce its physiological function, promote union of fracture.Outside this proximal tibia, bridge joint internal fixation system is maximized favourable factors and minimized unfavourable ones to traditional operation method, overcomes the deficiencies in the prior art part, improves the biomechanical property of operative site, decreases the generation of post-operative complication.Meanwhile, this design operation is easy, shortens operating time, accelerates healing time, decreases patient suffering to a great extent, makes it be full of confidence to the life after rehabilitation; In addition, this design also brings the facility in work for medical worker and improves success rate of operation.
Accompanying drawing explanation
Fig. 1 is bridge joint internal fixation system general assembly schematic diagram outside this utility model proximal tibia;
Fig. 2 is that outside proximal tibia, special-shaped block is connected sectional view with U-shaped rod and ladder screw;
Fig. 3 is special-shaped block front view outside proximal tibia;
Fig. 4 is the A-A sectional view of Fig. 3
Fig. 5 is the C-C sectional view of Fig. 3;
Fig. 6 is the D-D sectional view of Fig. 3;
Fig. 7 is U-shaped rod front view;
Fig. 8 is that screwed hole fixed block front view determined by monolock;
Fig. 9 is the B-B sectional view of Fig. 8;
Figure 10 is double-locking screwed hole fixed block front view;
Figure 11 is the E-E sectional view of Figure 10;
Figure 12 is ladder screw front view;
Figure 13 is lock screw front view;
Figure 14 is the left view of Figure 13.
Detailed description of the invention:
With reference to accompanying drawing 1-14, outside proximal tibia as shown in Fig. 1 general assembly, special-shaped block 1 (Fig. 3) is golf clubs capitiform according to the design of skeleton anatomical structure and has certain radian, its head end has locking screw thread hole 7, fit fixing by locking screw thread nail 2 and bone, tail end inside has holes 7 to coordinate with U-shaped rod 5 (Fig. 7), tail end is provided with ladder screwed hole 8 simultaneously, realizes reliable fixing by ladder screw 3 (Figure 12) and U-shaped rod; U-shaped rod assembles several fixed blocks 4 (Fig. 8) and fixed block 6 (Figure 10), fixed block is fixed by lock screw (Figure 13) and rod.
Outside proximal tibia in described this utility model, special-shaped block tail end is inner porose coordinates with U-shaped pitman, special-shaped block tail end arranges ladder screwed hole simultaneously, fix special-shaped block and pitman by ladder screw, prevent special-shaped block to be connected with pitman and loosen, the reliable connection of both realizations; In addition U-shaped club head fluting, its head end with ladder screw is fitted tightly, and increase frictional force between the two, blocks screw by groove simultaneously and makes its fixed effect better; The head end of special-shaped block can load requisite number object lock screw according to fracture situation, makes itself and tibia carry out well fitting fixing.
Operation consent monolock is determined screwed hole fixed block and double-locking screwed hole fixed block loads U-shaped rod, because fixed block and U-shaped rod are for being slidably matched, the position of fixed block can be adjusted arbitrarily according to the position of fracture line in operation technique, make the relative position that itself and fracture line keep best, be fixed by lock screw after adjustment, avoid the stress occurred in traditional surgical approaches to concentrate, promote union of fracture; U-shaped rod main body section arranges several draw-in grooves, and the contact surface that lock screw loads when locking and between U-shaped rod increases, thus frictional force increases, and fixed block and U-shaped rod is connected and not easily loosens.
Operation principle of the present utility model and feature:
1) outside proximal tibia, bridge joint internal fixation system combines the advantage of conventional steel plates head design to the special-shaped block that specific part designs, evaded again the shortcoming that it exists simultaneously, bar portion bridge connected fixes the defect well avoiding traditional surgical approaches stress shielding, make physiological stress can effectively by the sclerotin of fixed position, recover the physiological stimulation at this position, reduce its physiological function, promote union of fracture.Meanwhile, this design operation is easy, shortens operating time, accelerates healing time, decreases patient suffering to a great extent, makes it be full of confidence to the life after rehabilitation; In addition, this design also brings the facility in work for medical worker and improves success rate of operation.
2) structurally, special-shaped block, according to skeleton anatomical design, achieves and well fits with proximal tibia, makes special-shaped block be connected with U-shaped rod the effect reaching pin and fix, connect more reliable by ladder screw; Pitman adopts U-shaped rod, prevent fixed block from the slippage of pitman end, the design of U-shaped club head and the some draw-in grooves of main part adds the contact area of itself and screw, thus increase frictional force, make U-shaped rod more reliable with the connection of special-shaped block and fixed block, reduce the risk that postoperative appearance loosens slippage.

Claims (8)

1. bridge joint internal fixation system outside a proximal tibia, it is characterized in that: this system is made up of head, bar portion, lock screw, ladder screw, head is special-shaped block outside proximal tibia, and bar portion comprises monolock and determines screwed hole fixed block, double-locking screwed hole fixed block, U-shaped rod.
2. bridge joint internal fixation system outside proximal tibia according to claim 1, it is characterized in that: outside proximal tibia, the head end of special-shaped block is golf clubs capitiform, it has locking screw thread hole, tail end inside has holes to coordinate with pitman, and tail end has ladder screwed hole.
3. bridge joint internal fixation system outside proximal tibia according to claim 2, is characterized in that: the locking screw thread hole of special-shaped block head end is circular cone multi start thread hole.
4. bridge joint internal fixation system outside proximal tibia according to claim 2, is characterized in that: the number of the ladder screwed hole of special-shaped block tail end is 1-2.
5. bridge joint internal fixation system outside proximal tibia according to claim 1, is characterized in that: U-shaped club head is slotted, and coordinates with ladder screw head.
6. bridge joint internal fixation system outside proximal tibia according to claim 1, is characterized in that: U-shaped rod main part has several grooves, with lock screw head fits.
7. bridge joint internal fixation system outside proximal tibia according to claim 1, is characterized in that: screwed hole fixed block inside determined by monolock two parallel via holes be slidably matched with U-shaped rod.
8. bridge joint internal fixation system outside proximal tibia according to claim 1, is characterized in that: there are two parallel via holes be slidably matched with U-shaped rod double-locking screwed hole fixed block inside.
CN201520312631.7U 2015-05-15 2015-05-15 Bridge joint internal fixation system outside proximal tibia Active CN204931821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520312631.7U CN204931821U (en) 2015-05-15 2015-05-15 Bridge joint internal fixation system outside proximal tibia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520312631.7U CN204931821U (en) 2015-05-15 2015-05-15 Bridge joint internal fixation system outside proximal tibia

Publications (1)

Publication Number Publication Date
CN204931821U true CN204931821U (en) 2016-01-06

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Application Number Title Priority Date Filing Date
CN201520312631.7U Active CN204931821U (en) 2015-05-15 2015-05-15 Bridge joint internal fixation system outside proximal tibia

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107080581A (en) * 2016-02-16 2017-08-22 宋若怡 Elastic internal fixation system and pressure-adjustable hold-down bars
CN108175491A (en) * 2018-02-05 2018-06-19 熊鹰 A kind of locking power type stent inner fixing device
WO2021129548A1 (en) * 2019-12-26 2021-07-01 天津市威曼生物材料有限公司 Semi-closed fixing device and closed locking device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107080581A (en) * 2016-02-16 2017-08-22 宋若怡 Elastic internal fixation system and pressure-adjustable hold-down bars
CN107080581B (en) * 2016-02-16 2020-08-11 宋若怡 Elastic internal fixing system and pressure-adjustable fixing rod
CN108175491A (en) * 2018-02-05 2018-06-19 熊鹰 A kind of locking power type stent inner fixing device
WO2021129548A1 (en) * 2019-12-26 2021-07-01 天津市威曼生物材料有限公司 Semi-closed fixing device and closed locking device

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