CN101785715A

CN101785715A - Auxiliary bone grafting bracket for large bone defect

Info

Publication number: CN101785715A
Application number: CN 201010122334
Authority: CN
Inventors: 张英泽; 张纯朴
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-12
Filing date: 2010-03-12
Publication date: 2010-07-28

Abstract

The invention relates to an auxiliary bone grafting bracket for a large bone defect, which has the structure that an outer mesh pipe is sleeved outside an inner mesh pipe; a plurality of connecting rods are connected between the outer wall of the inner mesh pipe and the inner wall of the outer mesh pipe; the pipe walls of the inner mesh pipe and the outer mesh pipe are distributed with meshes; and both ports of the inner mesh pipe are respectively positioned at the inner sides of both port planes of the outer mesh pipe. The bone compensating bracket is suitable for the bone defect treatment of a wound without inflammation. By grafting the bone compensating bracket into the bone defect part of a patient, the curing effect of a bone defect disease can be effectively improved, and a feasible, practical and efficient new scheme is provided for the treatment of the large bone defect.

Description

Auxiliary bone grafting bracket for large bone defect

Technical field

The present invention relates to a kind of from body bone bone grafting therapeutic kit, specifically a kind of auxiliary bone grafting bracket for large bone defect.

Background technology

Present treatment for large segmental bone defect, generally all be by modes such as intramedullary pin and steel plate reinforcements, limbs with the bone defect are fixed together earlier, and then extract a certain amount of broken bone from patient's ilium, these broken bone heaps are implanted in the bone defect of limbs, make finally that bone grafting survives in the bone defect, pulp cavity is logical again, makes bone damaged place bony union.The therapeutic modality that this broken bone heap is planted, its defective, the one, become osteon not concentrate, cause the bone amount and bigger than normal of getting with the bone amount; The 2nd, can not form the center pulp cavity in early days, be unfavorable for that blood flow passes through; The 3rd, bone grafting causes the treatment failure often by the soft tissue absorbed in affected part; The 4th, the course of treatment is long, has increased patient's misery and corresponding treatment expense.

Summary of the invention

Purpose of the present invention just provides a kind of auxiliary bone grafting bracket for large bone defect, to overcome the deficiency that existing therapeutic modality exists, reduces the bone amount of getting, and shortens the course of treatment, improves therapeutic effect.

The present invention is achieved in that a kind of auxiliary bone grafting bracket for large bone defect, webmaster outside the outer cover of interior webmaster is connected to, in described the outer wall of webmaster and described outside be connected to some connecting rods between the inwall of webmaster; Be distributed with mesh on the tube wall of webmaster and described outer webmaster in described, two ports of described interior webmaster lay respectively at two planar inboards of port of described outer webmaster.

Support of the present invention is made by bioabsorbable material.Pressurization is packed to broken bone skeletal grain in the spatial joint clearance between the inside and outside two-layer webmaster of this support, can form " tubular bone " that is wrapped in by inside and outside webmaster.This " tubular bone " support is fast the surviving and grow of the broken bone of standard, provides one to rely on reliably.This " tubular bone " support is directly implanted patient's bone defect, the broken bone stitching surface at support two ends respectively with the two ends bone stump closed butt joint of patient's bone defect, the two ends sponson of the outer webmaster of support is socketed in the bone stump cortex outside respectively, its gap location forms closely connection with the broken bone filling of high-quality.The mesh that gathers on inside and outside webmaster can extensively flow into blood, to nourish broken bone skeletal grain.Webmaster can form the artificial pulp cavity on " tubular bone " in the support, and after the execution of pulp cavity blood circulation art finished, the pulp cavity in affected part was recovered at once.Like this, after implantation, the perfusion of the normal blood flow of bone defect is simulated, and makes bone grafting can obtain sufficient nutrition, is more prone to survive.The lap clearance part of outer webmaster two ends of support and bone stump cortex makes soft tissue not invade by the broken bone filling of high-quality, and the situation of having avoided bone graft area to be clogged by fibrous tissue occurs, and has effectively improved the success rate of bone grafting treatment bone does not connect.

Described connecting rod is arranged on the port part at described interior webmaster two ends.Can improve the intensity of webmaster in this support like this, when the broken bone of pressurization filling, deflection does not take place, and the spatial joint clearance that also helps between the inside and outside webmaster keep uniformity.

The interplanar distance of port of the adjacent port of the port plane of webmaster and described outer webmaster is 3-5mm in described, the port 3-5mm of webmaster in promptly the port of outer webmaster exceeds, and this port section that has more is in order to stably to overlap the bone stump of catching the bone defect.

Support of the present invention can be made pipe, the rib pipe of different length or have conical tube, the pyramid pipe of certain taper.Different support shapes is for adapting to the bone section form of different bone defect.As the auxiliary bone grafting support near bone metaphysis, the gap of its inside and outside rack should be big slightly, to adapt to the variation of bone metaphysis pulp cavity.

The present invention is a kind of auxiliary stand of using from body bone bone grafting treatment large segmental bone defect, is adapted to the treatment of the large segmental bone defect of NIP, and its beneficial effect is:

1, it is more concentrated that this support makes into osteon, makes bone grafting more effective, saved and got the bone amount and use the bone amount;

2, this carriage center has through hole, can form artificial pulp cavity, makes pulp cavity blood circulation art finish and is recovered at once, and the normal blood flow perfusion of bone defect is simulated, and makes bone grafting obtain abundant nutrition, and bone grafting is easier to be survived;

3, the filling of the high-quality bone between the junction of outer webmaster of this support and bone stump cortex has stopped the intrusion of soft tissue to the damaged place of bone, makes bone grafting " creeping substitution " act on easier giving full play to;

4, this support makes that intramedullary pin can pass from pulp cavity when treatment, forms center fixation and certain annular brace;

5, the muscle contraction of heap shape bone grafting is close in the application of this support when having avoided because of functional exercise, the broken bone piece of tractive departs from effective bone grafting position, effectively standard surviving and growth site of bone grafting;

6, the use of this support can improve the damaged treatment of conditions effect of bone effectively, can shorten the bone grafting treatment time of large segmental bone defect, makes the bone grafting damage littler, treats more economical.

The present invention provides a kind of simple and practical apparatus for Ilium bone remodeling, for use from body bone section implantation treatment bone damaged provide may, for the treatment of large segmental bone defect provides a kind of feasible, practical, new departure efficiently.

Description of drawings

Fig. 1 is a structural representation of the present invention.

The specific embodiment

As shown in Figure 1, support of the present invention includes outer webmaster 1 and interior webmaster 3, interior webmaster 3 and outer webmaster 1 are the straight tube of the mesh 4 that gathers on the tube wall, the diameter of the mesh 4 on the inside and outside webmaster is good between 2.8-3.2mm, because the diameter of made broken bone skeletal grain is generally about 4mm, so mesh can be done under the prerequisite that can block broken bone skeletal grain effectively greatly as far as possible.

The outside of webmaster 3 in outer webmaster 1 is socketed in, two ports of interior webmaster 3 lay respectively at two planar inboards of port of outer webmaster 1, and the interplanar distance of port of the adjacent port of the port plane of interior webmaster 3 and described outer webmaster 1 is 3-5mm.

The outer wall of interior webmaster 3 and outside be connected to some connecting rods 2 between the inwall of webmaster 1, the position is set arbitrarily; Mode is preferably: the port part at webmaster 3 two ends in connecting rod 2 is separately positioned on.Among Fig. 1, the port part outside at interior webmaster 3 two ends is respectively equipped with three horizontal overhanging connecting rods 2 that are uniformly distributed along the circumference, and can form a stable connection like this and support.

Claims

1. an auxiliary bone grafting bracket for large bone defect is characterized in that webmaster (1) outside the outer cover of interior webmaster (3) is connected to, the outer wall of webmaster in described (3) and described outside be connected to some connecting rods (2) between the inwall of webmaster (1); Be distributed with mesh (4) on the tube wall of webmaster (3) and described outer webmaster (1) in described, two ports of described interior webmaster (3) lay respectively at two planar inboards of port of described outer webmaster (1).

2. auxiliary bone grafting bracket for large bone defect according to claim 1 is characterized in that described connecting rod (2) is arranged on the port part at described interior webmaster (3) two ends.

3. auxiliary bone grafting bracket for large bone defect according to claim 1 and 2, it is characterized in that described in the interplanar distance of port of adjacent port of the port plane of webmaster (3) and described outer webmaster (1) be 3-5mm.