CN201157397Y

CN201157397Y - Thoracolumbar transpedicular internal bone grafting instrument

Info

Publication number: CN201157397Y
Application number: CNU2008200696751U
Authority: CN
Inventors: 张传林; 张舜
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-14
Filing date: 2008-03-14
Publication date: 2008-12-03
Anticipated expiration: 2018-03-14

Abstract

A thoracolumbar bone-grafting appliance inside the vertebral body through the pedicle of vertebral arch comprises a set of special appliances composed of a piercer for the pedicle of vertebral arch, a bone cavity expander for the vertebral body, a funnel-shaped bone-grafting device for the tube of the pedicle of vertebral arch and a bone-grafting stick. One end of the piercer for the pedicle of vertebral arch is provided with a drill, and the other end is provided with a handle. The bone cavity expander for the vertebral body is a pliers provided with a slender pliers body with the pliers mouth arranged at the end part of the pliers body. The outside diameter of the funnel tube of the funnel-shaped bone-grafting device for the tube of the pedicle of vertebral arch and the thickness of the pliers body of the bone cavity expander for the vertebral body are slightly smaller than the diameter of the drill of the piercer for the pedicle of vertebral arch, and the diameter of the bone-grafting stick is slightly smaller than the inside diameter of the funnel tube of the funnel-shaped bone-grafting device for the tube of the pedicle of vertebral arch. By utilizing the set of devices, a bone piece can be grafted into the vertebral body conveniently, the tube for the pedicle of vertebral arch is hard to be broken and destroy the peripherical nerve tissues. After a bone grafting, the healing and rehabilitation are rapid and the bearing capacity of the vertebral body can be restored effectively.

Description

Bone grafting apparatus in the breast waist section pedicle vertebral body

One, technical field

This utility model relates to a kind of orthopaedics medical apparatus and instruments, exactly, is one group of apparatus that is used for bone grafting in the breast waist section pedicle vertebral body.

Two, background technology

Breast waist section vertebral body (breast 8 is to waist 5) is easily taken place by compression fracture, and following variation is arranged behind the vertebral compression fracture: 1, cracked bone piece extruding canalis spinalis can cause the compression of spinal cord quadriplegia; 2, vertebral height is lost, the vertebral body unstability; 3, the vertebral body spongy bone is compressed into lumps, and a large amount of pulp sample things flow out from fracture gap to be lost.In recent years, people extensively use pedicle inner fixing device treatment breast waist section vertebral compression fracture, obtained the vertebral height recovery, excellent results such as firm fixation, but because spongy bone is compressed into agglomerate, pulp sample thing is lost, though the vertebral body cortical bone resets, the cavity is arranged in the vertebral body, so union of fracture is slow, bearing capacity descends after the union of fracture, and patient's heavy burden postcentrum height of leaving the bed is lost again.Vertebral height is lost and is caused internal fixation system loosening, the vertebral body unstability, and canalis spinalis is squeezed again.For addressing these problems, some hospitals take to pour in the vertebral body self-curable calcium phosphate bone cement and treat, though played certain effect, but the self-curable calcium phosphate bone cement can form permanent foreign body in vivo, with advancing age, skeleton is also along with variation, and the self-curable calcium phosphate bone cement then can cause friction between bone, cause pain even infection.The someone proposes to adopt pedicle vertebral body interplantation bone-specific drug breast waist section vertebral compression fracture recently, but can't implement owing to there is not special-purpose apparatus.

Three, summary of the invention

The technical problems to be solved in the utility model is: design one group of special equipment that adopts pedicle vertebral body interplantation bone-specific drug breast waist section vertebral compression fracture, to improve success rate of operation and to heal the back effect.

The technical scheme that solution this utility model technical problem is taked is: form one group of special equipment by pedicle of vertebral arch borer, vertebral body bone cavity expander, funnelform pedicle of vertebral arch pipe bone grafting device, bone grafting rod, pedicle of vertebral arch borer one end has drill bit, and the other end is provided with handle; Vertebral body bone cavity expander is a tonger that caliper is elongated, and jaw is located at the end of caliper; The caliper fineness degree of funnelform pedicle of vertebral arch pipe bone grafting device funnel tube external diameter, vertebral body bone cavity expander all is slightly less than the diameter of pedicle of vertebral arch borer drill bit; The diameter of bone grafting rod is slightly less than funnelform pedicle of vertebral arch pipe bone grafting device funnel tube internal diameter.

For making things convenient for clinical manipulation, vertebral body bone cavity expander can be designed to form a quadric chain by make up tong handle, upper clamp, lower clamp and lower clamp nozzle, caliper is elongated, and jaw is located at the end of caliper, make up tong promoting the upper clamp rectilinear motion, upper clamp drives the lower clamp nozzle folding.

For avoiding hurting vertebral body, be provided with the hole depth limited block in the drill bit back of pedicle of vertebral arch borer; The inside and outside correspondence position of funnel tube of funnelform pedicle of vertebral arch pipe bone grafting device is equipped with limiting stand; On the bone grafting rod, be provided with limited block.

Four of this utility model are a cover, can design multiple model.

Good effect of the present utility model is: utilize this group apparatus can be with in the convenient and swift implantation of the bone piece vertebral body, and be difficult for breaking the pedicle of vertebral arch pipe, can not injure peripheral nerve tissue; Healing is fast behind the bone grafting, recovery is fast, and efficient recovery vertebral body bearing capacity can be arranged.

Four, description of drawings

Accompanying drawing 1 is this utility model combined apparatus box sketch map;

Accompanying drawing 2 is a pedicle of vertebral arch borer sketch map of the present utility model;

Accompanying drawing 3 is a vertebral body bone cavity expander sketch map of the present utility model;

Accompanying drawing 4 is a vertebral body bone cavity expander user mode sketch map of the present utility model;

Accompanying drawing 5 is the jaw part enlarged drawing of vertebral body bone cavity expander;

Accompanying drawing 6 is a funnelform pedicle of vertebral arch pipe bone grafting device sketch map of the present utility model;

Accompanying drawing 7 is a bone grafting rod sketch map of the present utility model.

Five, the specific embodiment

This utility model as shown in Figure 1, this utility model is formed one group of special equipment by pedicle of vertebral arch borer 2, vertebral body bone cavity expander 3, funnelform pedicle of vertebral arch pipe bone grafting device 4, bone grafting rod 5, be placed in the instruments box 1, when clinical manipulation, require the bone grafting passage that certain depth is arranged, for avoiding hurting vertebral body, drill bit 8 back at pedicle of vertebral arch borer 2 are provided with hole depth limited block 7, and the other end is provided with handle 6; Vertebral body bone cavity expander 3 be one by making up tong 13, upper clamp 18, lower clamp 9 and lower clamp nozzle 25 are formed a quadric chain (as Fig. 3, shown in Figure 4), last lower clamp 18,9 is elongated, jaw 14 is located at lower clamp 18,9 end (as shown in Figure 3), upper clamp 18, respectively there is a groove 17 rear end of lower clamp 9,10, making up tong has two holes to 13 epimeres, make up tong 13 epimere is penetrated upper clamp 18, the groove 17 of lower clamp 9 rear ends, in 10, by two little rotating shafts 16,12 with upper clamp 18, lower clamp 9 links together, upper clamp 8, the contact surface of lower clamp 9 is the plane, outer pincers 4 and lower clamp 9 are one; Jaw 14 is formed (as shown in Figure 5) by upper clamp nozzle 24, lower clamp nozzle 25, upper clamp nozzle 24 is one with upper clamp 18, lower clamp nozzle 25 penetrates in the groove 23,22 of upper clamp 18, lower clamp 9 front ends, is connected to upper clamp 18 and lower clamp 9 front ends through two little rotating shafts 21,20; The caliper fineness degree of vertebral body bone cavity expander 3 is slightly less than the diameter of drill bit 3 on the pedicle of vertebral arch borer 2.The inside and outside correspondence position of the funnel tube 26 of funnelform pedicle of vertebral arch pipe bone grafting device 4 is equipped with limiting

stand

27,28, and the external diameter that funnel tube 26 fronts of funnelform pedicle of vertebral arch pipe bone grafting device 4 are a section is slightly less than the diameter of drill bit 3 on the pedicle of vertebral arch borer 2.Bone grafting rod 5 is provided with limited block 30, and the barred body diameter is slightly less than the internal diameter of one section of funnelform pedicle of vertebral arch pipe bone grafting device 4 funnel tubes 26 front, and the other end is provided with handle 29.

The using method of vertebral body bone cavity expander 3 is: hold inside and outside pincers 13,19, pull and make up tong 13, make up tong 13 front ends promotion upper clamp 18 and upper clamp nozzle 24 are moved forward, upper clamp nozzle 24 drives lower clamp nozzle 25 and moves when moving, because lower clamp nozzle 25 is connected on upper clamp 18, the lower clamp 9 by two little rotating shafts 21,20, so lower clamp nozzle 25 can only be done downward rotational action, promptly lower clamp nozzle 25 opens downwards; Release is made up tong 13, is moving and driving lower clamp nozzle 25 closures behind the upper clamp 18 under 15 effects of return elastic shelf.

Using method of the present utility model is: at first get through the pedicle of vertebral arch pipe with pedicle of vertebral arch borer 2 and enter vertebral body, set up the bone grafting passage, vertebral body bone cavity expander 3 is inserted the bone grafting passage, hold, put inside and outside pincers repeatedly 13,19, with the compacting towards periphery of remaining bone piece, and reserve bone cavity and be equipped with bone grafting usefulness, more funnelform pedicle of vertebral arch pipe bone grafting device 4 is inserted the bone grafting passages, the broken bone piece of handling well is put into funnel, and reuse bone grafting rod 5 is inserted the bone piece in the vertebral body.

Claims

1, bone grafting apparatus in a kind of breast waist section pedicle vertebral body, it is characterized in that: form one group of special equipment by pedicle of vertebral arch borer (2), vertebral body bone cavity expander (3), funnelform pedicle of vertebral arch pipe bone grafting device (4), bone grafting rod (5), pedicle of vertebral arch borer (2) one ends have drill bit (8), and the other end is provided with handle (6); Vertebral body bone cavity expander (3) is one and goes up the elongated tonger of lower clamp (18,9) that jaw (14) is located at the end of lower clamp (18,9); The external diameter that funnelform pedicle of vertebral arch pipe bone grafting device (4) funnel tube (26) front is one section, the caliper fineness degree of vertebral body bone cavity expander (3) all are slightly less than the diameter of pedicle of vertebral arch borer (2) drill bit (8); The diameter of bone grafting rod (5) is slightly less than the internal diameter of one section of funnelform pedicle of vertebral arch pipe bone grafting device (4) funnel tube (26) front.

2, bone grafting apparatus in the breast waist section pedicle vertebral body according to claim 1, it is characterized in that: vertebral body bone cavity expander (3) is a quadric chain of being made up of make up tong (13), a upper clamp (18), lower clamp (9) and lower clamp nozzle (25), last lower clamp (18,9) is elongated, and jaw (14) is located at the end of lower clamp (18,9); Outer pincers are (19) one with lower clamp (9); Respectively there is a groove (17,10) rear end of upper clamp (18), lower clamp (9), making up tong has two holes to (13) epimere, making up tong penetrates the epimere of (13) in the groove (17,10) of upper clamp (18), lower clamp (9) rear end, by two little rotating shafts (16,12) upper clamp (18), lower clamp (9) is linked together; Jaw (14) is made up of upper clamp nozzle (24), lower clamp nozzle (25), upper clamp nozzle (24) is an one with upper clamp (18), lower clamp nozzle (25) penetrates in the groove (23,22) of upper clamp (18), lower clamp (9) front end, is connected to upper clamp (18) and lower clamp (9) front end through two little rotating shafts (21,20); The contact surface of upper clamp (18), lower clamp (9) is the plane, makes up tong (13) are promoted upper clamp (18) rectilinear motion, and upper clamp (18) drives lower clamp nozzle (25) folding

3, bone grafting apparatus in the breast waist section pedicle vertebral body according to claim 1, it is characterized in that: drill bit (8) back in pedicle of vertebral arch borer (2) is provided with hole depth limited block (7); The inside and outside correspondence position of funnel tube (26) of funnelform pedicle of vertebral arch pipe bone grafting device (4) is equipped with limiting stand (27,28); On the bone grafting rod, be provided with limited block (30).