CN204468253U - A kind of introducer - Google Patents

A kind of introducer Download PDF

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Publication number
CN204468253U
CN204468253U CN201420854024.9U CN201420854024U CN204468253U CN 204468253 U CN204468253 U CN 204468253U CN 201420854024 U CN201420854024 U CN 201420854024U CN 204468253 U CN204468253 U CN 204468253U
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CN
China
Prior art keywords
base portion
head
nut
screw rod
introducer
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Expired - Fee Related
Application number
CN201420854024.9U
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Chinese (zh)
Inventor
徐汪洋
周晓忠
李贵涛
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Guangdong No 2 Peoples Hospital
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Guangdong No 2 Peoples Hospital
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Priority to CN201420854024.9U priority Critical patent/CN204468253U/en
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Publication of CN204468253U publication Critical patent/CN204468253U/en
Expired - Fee Related legal-status Critical Current
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Abstract

This utility model embodiment provides a kind of introducer, for accurately being inserted in vertebral body by non-hollow Pediculus arcus vertebrae screw.The technical scheme of a kind of introducer of this utility model embodiment comprises: a left side struts body, the right side struts body, and a described left side struts body and comprises left base portion and left head, and the described right side struts body and comprises right base portion and right head; Described left base portion and described right base portion run through and has spiral controlling organization, described spiral controlling organization makes described left head mutually fasten with described right head or be separated; When described left head and described right head fasten mutually, described left head and described right head inside form the importing sleeve pipe of hollow.

Description

A kind of introducer
Technical field
This utility model embodiment relates to medical instruments field, particularly relates to a kind of introducer.
Background technology
Pedicle screw is more common in operation on vertebra, and its effect is connected and fixed by two or more vertebra, to the vertebra of vertebra patient play fixing, recover height, the effect such as orthopedic.Minimal invasion pedicle screw instrumentation was applied to clinical in recent years, and wound is little, lost blood few, recovered fast, obtained certain curative effect.
Current minimal invasion pedicle screw instrumentation all adopts hollow pedicle to follow closely, modus operandi is mainly: first determine the entry point that punctures, with bone hammer, puncture needle pushed forward is entered pedicle of vertebral arch slightly after puncture needle being placed in point of puncture, after puncture needle enters pedicle of vertebral arch, insert guide pin, guarantee that guide pin position is good, take out puncture needle, extremely slightly ductal ectasia device is inserted through otch by thin along guide pin, with combined countersink drill, surface of bone is polished subsequently, hollow Pediculus arcus vertebrae screw and surface of bone are coincide, hollow Pediculus arcus vertebrae screw is inserted along guide pin, the hollow Pediculus arcus vertebrae screw made is implanted with correct position and direction.And traditional orthopedic spinal solid pedicle screw Internal fixation technology fully appears rear implantation by large otch, there is the features such as wound large, hemorrhage many, hospital stays is long in this modus operandi.
Existing minimal invasion pedicle screw instrumentation technology there is no the related device non-hollow pedicle nail being put to nail, is difficult to accurately control non-hollow Pedicle Screw position, makes to put nail precision lower.The intensity also more non-hollow Pediculus arcus vertebrae screw decline about 15% ~ 25% of hollow Pediculus arcus vertebrae screw, occur after implant into body that the probability of broken nail obviously increases, expensive nearly about 2 times of the more non-hollow Pediculus arcus vertebrae screw of its expense, adds expense to patient simultaneously.
Utility model content
This utility model embodiment provides a kind of introducer, for accurately being inserted in vertebral body by non-hollow Pediculus arcus vertebrae screw.
The technical scheme of a kind of introducer of this utility model embodiment comprises:
A left side struts body, the right side struts body, and a described left side struts body and comprises left base portion and left head, and the described right side struts body and comprises right base portion and right head; Described left base portion and described right base portion run through and has spiral controlling organization, described spiral controlling organization makes described left head mutually fasten with described right head or be separated; When described left head and described right head fasten mutually, described left head and described right head inside form the importing sleeve pipe of hollow.
Preferably, described spiral controlling organization comprises screw rod and is enclosed within the nut on screw rod, and described screw rod runs through described left base portion and described right base portion, and the head of described screw rod is fixed on described left base portion, and described nut is positioned at the right side of described right base portion.
Preferably, inside described nut, be provided with the rib preventing nut landing, described rib and described nut one-body molded, described right base portion is between described rib and described nut.
Preferably, described spiral controlling organization comprises screw rod and is enclosed within the nut on screw rod, and described screw rod runs through described left base portion and described right base portion, and the head of described screw rod is fixed on described right base portion, and described nut is positioned at the left side of described left base portion.
Preferably, inside described nut, be provided with the rib preventing nut landing, described rib and described nut one-body molded, described left base portion is between described rib and described nut.
Preferably, described left base portion and described right base portion are connected as a single entity by relative rotatable manner.
Preferably, a described left side struts body and the described right side and struts body and be symmetrical arranged.
Preferably, the shape of described importing sleeve pipe is beloid infundibulate.
Preferably, described left base portion and described left head are formed in one structure.
Preferably, described right base portion and described right head are formed in one structure.
The beneficial effect of this utility model embodiment is:
Due to design infundibulate introducer and non-hollow Pediculus arcus vertebrae screw be identical, by guide pin, introducer is imported in pedicle of vertebral arch osseous tunnel in operation, after extracting guide pin out, solid pedicle screw is positioned in introducer, left head and right head is opened gradually by the spiral controlling organization controlled on introducer, thus gradually the non-hollow Pediculus arcus vertebrae screw imported in sleeve pipe is progressively imported in the pedicle of vertebral arch osseous tunnel that designed, import to introducer after osseous tunnel completely until non-hollow Pediculus arcus vertebrae screw and depart from osseous tunnel voluntarily, thus do not affect the implantation of pedicle screw, the invasive that the non-hollow Pediculus arcus vertebrae screw of whole process implementation is implanted, reduce operation wound and operative hemorrhage, length of patient stay can be shortened and reduce patient's hospitalization cost, reduce broken nail probability with the hollow Pediculus arcus vertebrae screw implanted is obvious simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the front view of a kind of introducer of this utility model embodiment;
Fig. 2 is the profile of a kind of introducer of this utility model embodiment along A-A direction.
Detailed description of the invention
This utility model embodiment provides a kind of introducer, for accurately being inserted in vertebral body by non-hollow Pediculus arcus vertebrae screw.
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
Refer to Fig. 1 to Fig. 2, this utility model embodiment provides a kind of introducer, comprising: a left side struts body, the right side struts body and spiral controlling organization.
Respectively body is strutted to a left side below, the right side struts body and spiral controlling organization is described in detail:
(1) left side struts body
As depicted in figs. 1 and 2, a left side struts body and comprises interconnective left base portion 1 and left head 2.
In the present embodiment, left base portion 1 and left head 2 can be structure as a whole, and in order to realize accurately falling into non-hollow Pediculus arcus vertebrae screw, left base portion can be mutually vertical with left head.
(2) right side struts body 3
As depicted in figs. 1 and 2, the right side struts body and comprises interconnective right base portion 3 and right head 4.
In the present embodiment, right base portion 3 and right head 4 can be structure as a whole, and in order to realize accurately falling into non-hollow Pediculus arcus vertebrae screw, right base portion 3 can be mutually vertical with right head 4.
It should be noted that, left base portion 1 and right base portion 3 can be connected as a single entity by screw 8, also can be separated from each other, specifically not limit herein.
When left base portion 1 and right base portion 3 are connected as a single entity, both can rotate to an angle relatively, and that is, the connection of left base portion 1 and right base portion 3 is not fixed.Left base portion 1 can be provided with the first ring-type fixing plate and the second ring-type fixing plate, the first ring-type fixing plate and the second ring-type fixing plate are in be arranged in parallel and centre has space; Right base portion 3 is provided with the 3rd ring-type fixing plate, in the 3rd space of ring-type fixing plate between the first ring-type fixing plate and the second ring-type fixing plate.First ring-type fixing plate, the second ring-type fixing plate and the 3rd ring-type fixing plate center are provided with through hole, this through hole is used for being screwed into screw 8, this screw 8 passes perpendicularly through the first ring-type fixing plate, the 3rd ring-type fixing plate, the second ring-type fixing plate successively, 3rd ring-type fixing plate relatively can rotate on the screw rod of screw 8, and right base portion 3 is relative to the rotatable installation of left base portion 1 thus.Be understandable that, adopt said method also can realize left base portion 1 relative to the rotatable installation of right base portion 3.Left base portion 1 and right base portion 3 also can adopt the rotatable installation of both alternate manner realizations, specifically do not limit herein.
(3) spiral controlling organization
Spiral controlling organization is adjustable apparatus, and spiral controlling organization is through left base portion and right base portion, and spiral controlling organization makes left head mutually fasten with right head or be separated.
In the present embodiment, spiral controlling organization can comprise screw rod 7 and be enclosed within the nut 6 on screw rod, and the screw thread wherein on nut 6 and screw rod 7 is not shown at this.
It should be noted that, as described in Figure 1, a left side struts body and the right side struts body all between the head and nut 6 of screw rod 7, screw rod 7 is through left base portion and right base portion, and the head of screw rod 7 can be fixed on left base portion by pin 9 or other modes, and nut 6 is positioned at the right side of right base portion, the rib 5 preventing nut landing is provided with inside nut 6, rib 5 and nut 6 can be formed in one structure, and right base portion is between rib 5 and nut 6, and the diameter of rib 5 is greater than the diameter of screw rod through hole on right base portion 3.Turn nut 6, a left side struts body and maintains static, nut 6 can move around on screw rod 7, the right side be positioned on nut 6 and rib 5 struts body and together moves around with nut 6, when left base portion and right base portion are connected as a single entity, because right base portion can move around on screw rod, so right base portion certain angle rotatable relative to left base portion simultaneously.
By arranging rib 5 inside nut 6, effectively can prevent nut 6 landing screw rod 7, simultaneously strutting body move around on screw rod 7 for the right side can be promoted.
Be understandable that, the head of screw rod also can be fixed on right base portion, and nut is positioned at the left side of left base portion.Be provided with the rib preventing nut landing inside nut, rib and nut one-body molded, left base portion is between rib and nut, and left base portion can coexist on screw rod with nut one and move around, and concrete principle is described above, does not repeat herein.
In the present embodiment, when left head and right head fasten mutually, left head and right head form the importing sleeve pipe of hollow, as shown in Figure 2, strut body be symmetrical arranged because a left side struts body and the right side, left head 4 is identical with the shape of right head 2, and the shape of this importing sleeve pipe entirety can be beloid infundibulate, and this importing sleeve pipe can be divided into the mating shapes of three parts and hollow cylindrical part, hollow cone part and elongated hollow cylindrical section shape and solid pedicle screw.Importing sleeve pipe herein mutually fastens by left head and right head the entirety formed, and left nose shape and right nose shape are the integrative-structure smoothly transitted respectively.
The hollow cylindrical part importing sleeve pipe is used for putting into non-hollow Pediculus arcus vertebrae screw, and the elongated hollow cylindrical part importing sleeve is used for fitting with the inwall of guide pin.
When importing sleeve pipe and vertically placing, non-hollow Pediculus arcus vertebrae screw moves down along importing sleeve gravitate and accurately enters in guide pin.
Below the specific works principle of introducer is described in detail:
First a left side for introducer is strutted body and the right side to strut body and mutually fasten, form the importing sleeve pipe of hollow, nut is positioned at the right side that the right side struts body, then the end importing sleeve pipe is filled in the guide pin suitable with its size, then extract guide pin out is positioned in importing sleeve pipe by non-hollow pedicle screw, turn nut, nut moves right, the nut promotion right side struts body and moves right, a left side struts body and the right side and struts body and mutually open, thus gradually the non-hollow Pediculus arcus vertebrae screw in sleeve pipe is progressively imported in the pedicle of vertebral arch osseous tunnel that designed, import to introducer after osseous tunnel completely until non-hollow Pediculus arcus vertebrae screw and depart from osseous tunnel voluntarily, thus do not affect the implantation of non-hollow Pediculus arcus vertebrae screw.
Should be noted that, because pedicle screw and guide pin have different specification size, the size of the importing sleeve of introducer can choose use according to actual needs.
When a left side struts body and the right head strutting body all vertically arranges, in order to play fixation to introducer, the outside of left head and right head can be provided with U-lag, by screw or card and mode fix on a support, thus operator is without the need to hand-held introducer, only spiral controlling organization need be operated.
The above, above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail this utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of this utility model.

Claims (10)

1. an introducer, is characterized in that, comprises that a left side struts body, the right side struts body, and a described left side struts body and comprises left base portion and left head, and the described right side struts body and comprises right base portion and right head; Described left base portion and described right base portion run through and has spiral controlling organization, described spiral controlling organization makes described left head mutually fasten with described right head or be separated; When described left head and described right head fasten mutually, described left head and described right head inside form the importing sleeve pipe of hollow.
2. introducer according to claim 1, it is characterized in that, described spiral controlling organization comprises screw rod and is enclosed within the nut on screw rod, described screw rod runs through described left base portion and described right base portion, the head of described screw rod is fixed on described left base portion, and described nut is positioned at the right side of described right base portion.
3. introducer according to claim 2, is characterized in that, is provided with the rib preventing nut landing inside described nut, described rib and described nut one-body molded, described right base portion is between described rib and described nut.
4. introducer according to claim 1, it is characterized in that, described spiral controlling organization comprises screw rod and is enclosed within the nut on screw rod, described screw rod runs through described left base portion and described right base portion, the head of described screw rod is fixed on described right base portion, and described nut is positioned at the left side of described left base portion.
5. introducer according to claim 4, is characterized in that, is provided with the rib preventing nut landing inside described nut, described rib and described nut one-body molded, described left base portion is between described rib and described nut.
6. introducer according to claim 1, is characterized in that, described left base portion and described right base portion are connected as a single entity by relative rotatable manner.
7. introducer according to claim 1, is characterized in that, a described left side struts body and the described right side and struts body and be symmetrical arranged.
8. introducer according to claim 1, is characterized in that, the shape of described importing sleeve pipe is beloid infundibulate.
9. introducer according to claim 1, is characterized in that, described left base portion and described left head are formed in one structure.
10. introducer according to claim 1, is characterized in that, described right base portion and described right head are formed in one structure.
CN201420854024.9U 2014-12-29 2014-12-29 A kind of introducer Expired - Fee Related CN204468253U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109431573A (en) * 2018-09-11 2019-03-08 广东省第二人民医院(广东省卫生应急医院) A kind of sacculus and application method of collectable fragment and support cavity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109431573A (en) * 2018-09-11 2019-03-08 广东省第二人民医院(广东省卫生应急医院) A kind of sacculus and application method of collectable fragment and support cavity

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150715

Termination date: 20161229

CF01 Termination of patent right due to non-payment of annual fee