CN201239167Y

CN201239167Y - Device used as dilator and protector for minimal invasion closed surgery

Info

Publication number: CN201239167Y
Application number: CNU2008201322676U
Authority: CN
Inventors: 王全贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-19
Filing date: 2008-08-19
Publication date: 2009-05-20
Anticipated expiration: 2018-08-19

Abstract

The utility model discloses an expansion protector for a micro-wound closed operation, which comprises a positioning needle with a needle tip, and at least one sleeve which can be sheathed on the positioning needle, and the length of the sleeve is shorter than that of the positioning needle. The expansion protector for a micro-wound closed operation can expand an incision of a needle-eye type and protect the peripheral tissue so as to improve the safety of the operation without injuring the circumferential tissue, has simple structure, low cost and convenient utilization, and is particularly suitable for the micro-wound closed operation, especially the operation treatment of the lumbar interveterbral disc protrusion, the extraction of the pathology specimen, and the like.

Description

Wicresoft's closure procedure expansion protector

Technical field

This utility model relates to a kind of medical apparatus and instruments, is the expansion protector that a kind of Minimally Invasive Surgery is used specifically, is used for otch expansion when being particularly suitable for intervertebral disk hernia Wicresoft closure procedure and to the protection of surrounding tissue.

Background technology

Prolapse of lumbar intervertebral disc mainly is that to be subjected to corresponding damage on degeneration of lumbar intervertebral disc's basis caused.The nucleus pulposus of degeneration is outstanding by the weakness or the rent of fibrous ring, and pressuring neural root or blood vessel cause lumbago and radioactivity leg pain, even produces the symptom of function of nervous system's infringement.

For the operative treatment of intervertebral disk hernia relatively more commonly used be the disc removal operation because therefore near the existence of a large amount of neural and blood vessels spinal column exists nerve root, blood vessel injury, intestinal canal damage equivalent risk when operation, increased the difficulty of performing the operation.Operation wound is big simultaneously, and the risk of secondary damage is arranged, and has increased patient's misery, and treatment and recovery time are long, and patient is difficult to accept.

The utility model content

The purpose of this utility model is to provide a kind of Wicresoft closure procedure expansion protector, and this protector can protect surrounding tissue injury-free when carrying out closed Minimally Invasive Surgery.Avoid risk to reduce wound, reduce painful.Expense is cheap simultaneously, and the patient is quick-recovery soon.

This utility model adopts following technical scheme: a kind of Wicresoft closure procedure expansion protector comprises the positioning needle of a tip, and can be enclosed within least one sleeve pipe on the positioning needle that casing length is shorter than described positioning needle.

Described sleeve pipe can be 2 to 5, and internal diameter increases successively, and the less relatively sleeve pipe of internal diameter can insert in the relatively large sleeve pipe of internal diameter, and the less telescopic length of internal diameter is greater than the bigger telescopic length of internal diameter.Can satisfy the needs of different operations like this, the pinprick shape operation that forms different-diameter gets involved otch.

Can also comprise a handle, have in the middle of the handle and can vertically pass described telescopic through hole, be provided with the radial location hole on position that handle communicates with described through hole and the casing wall, also have in the locating hole on alignment pin insertion casing wall and the handle to prevent that handle and sleeve pipe are with respect to rotation.

Described handle is made up of fixed bar and two rod members of motion bar, described through hole is positioned on the described fixed bar, described motion bar is installed in the end that fixed bar has through hole by screw thread and fixed bar coaxial line, and the motion bar end can be to the through hole convex for the through-hole wall on the fixed bar and insert and form described alignment pin in the locating hole on the sleeve pipe.

Described motion bar end can be provided with radial direction through hole and be beneficial to insert a root rod member and screw motion bar with the sleeve pipe jam-packed.

Described sleeve pipe front end can preferably adopt arced terminus for butt end or splay end head, and its cambered surface and annulus fibrosus disci intervertebralis or corresponding other operative segment tissue surface match.

The syringe needle of described positioning needle can be coniform tip, and more satisfactory is for rhizoma sparganic or four rib tips, so that fixedly positioning.

This Wicresoft of the present utility model closure procedure expansion protector; can expand and forms protective sleeve the otch of operation usefulness apparatus such as scalpel and surrounding tissue insulation blocking tissue on every side; to improve the safety of operation, do not injure surrounding tissue, and reduce operating difficulty; and it is simple in structure; cost is low, and is easy to use, is particularly suitable for the closed hands of Wicresoft and states; the operative treatment of intervertebral disk hernia particularly, the extraction that also can be used for the pathology sample is to carry out pathological section check etc.

Description of drawings

Fig. 1 is the cutaway view of a kind of preferred embodiment of Wicresoft of the present utility model closure procedure expansion protector.

Wicresoft's closure procedure expansion protector schematic appearance that Fig. 2 is shown in Figure 1.

Fig. 3 is the assembling sketch map of handle.

Fig. 4 is a handle decomposing schematic representation shown in Figure 3.

Fig. 5 is another kind of handle arrangement sketch map.

Fig. 6 is the needle point sketch map of positioning needle.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, to help understanding content of the present utility model.

As depicted in figs. 1 and 2, be the better embodiment sketch map of a kind of Wicresoft closure procedure expansion protector, by the positioning needle 1 of a tip, and 4

sleeve pipes

2,3,4,5 and the handle 6 that can be enclosed within on the positioning needle 1 are formed.All telescopic length are all short than positioning needle 1, so that after with sleeve pipe structural otch being expanded positioning needle 1 is extracted out in sleeve pipe.

Sleeve pipe 2～5, internal diameter increases successively, and the less relatively sleeve pipe of internal diameter can insert in the relatively large sleeve pipe of internal diameter as depicted in figs. 1 and 2, so that it can be nested from small to large successively, the less telescopic length of internal diameter is greater than the bigger telescopic length of internal diameter, stretch out in than greatly telescopic, in bigger sleeve pipe, extracting out so that behind otch, can utilize easily than small casing than the small casing tail end with bigger cover enlargement of pipe operation usefulness.

Sleeve pipe adopts pipe to be beneficial to telescopic rotation and inserts in the tissue, but pipe skids easily and is not easy to firmly, therefore adopt the mode that installs and fixes a flexible handle at the sleeve pipe tail end, grasp handle by to the sleeve pipe application of force to be inserted into through operative site in patient's body.

As a preferred embodiment, can be as shown in Figure 3 and Figure 4, handle is made up of

fixed bar

61 and 62 two rod members of motion bar, the screw 61b that can vertically pass telescopic through hole 61a and communicate with through hole 61a is arranged at fixed bar 61 1 ends, motion bar 62 ends are processed with thread segment 62b and can be contained in the screw 61b on the fixed bar 61, be installed in the end that fixed bar has through hole by screw thread and fixed bar 61 coaxial lines, and motion bar end 62c can form alignment pin for the through hole 61a inwall on the fixed bar to through hole 61a convex, can insert (or 4a in the radial direction through hole 5a on the corresponding cover tube wall as shown in Figure 1,3a, in the 2a), be contained in handle on the sleeve pipe and can prevent mutual rotation.The part that this mode motion bar 62 is a handle is used for gripping and firmly, playing the effect of alignment pin again, and do not need just spinning in and out easily of instrument generally speaking.With reference to Fig. 1 and Fig. 3, shown in Figure 4, motion bar 62 leading sections adopt a ledge structure simultaneously, and the step front end is not more than the locating hole on the sleeve pipe, and the step rear end utilizes the step rear end sleeve pipe jam-packed can be utilized front end pinning sleeve pipe greater than the locating hole on the corresponding sleeve pipe.

Certainly, for Fig. 3 and this combination handle structure of Fig. 4, also a radial direction through hole 62a can be set on motion bar 62 ends, its role is to insert a rod member 63 as shown in Figure 3, tighten motion bar easily by rod member 63, but, motion bar 62 can realize the location because needing only in the locating hole that inserts on the casing wall, usually need be by such rod member 63.

Fig. 5 shows another kind of handle arrangement, promptly has to wear effective through hole 6a in the middle of the shaft-like handle of an one, and the alignment pin that screw 7 constitutes is installed on the handle by screw thread and its end can inwardly protrude in the inwall of through hole 6a.This structure need be used screwdriver loading and unloading screw, and not attractive in appearance.

Because the fibrous ring of intervertebral disc is a ring-type, therefore

sleeve pipe

2,3,4,5

front end

2b, 3b, 4b, 5b are that arced terminus can form good fit with fibrous ring as shown in Figure 2.Be understandable that when being used for other operation and also can be butt end or splay end head according to pairing position, sleeve pipe termination.

As shown in Figure 6, the syringe needle of positioning needle is the rhizoma sparganic tip, is difficult for rotating because this rhizoma sparganic structure makes positioning needle be positioned the tissue back, and therefore the location is more firm with respect to coniform tip.

With a prolapse of lumbar intervertebral disc resection operation is that example illustrates its use: selected surgery location and make needle point accurately be positioned on the fibrous ring annulus fibrosus disci intervertebralis place that positioning needle is inserted into operation under equipment such as X-ray machine or CT help, sleeve pipe 2 with the internal diameter minimum is inserted in location and the guide effect that utilizes positioning needle from positioning needle 1 tail end then, be inserted into sleeve pipe 2 in the otch and its curved end 2b and fibrous ring are adjacent to, this moment sleeve pipe 2 to around push surrounding tissue and expand, the back that puts in place pinches the positioning needle tail end with positioning needle 1 extraction from sleeve pipe 2 tail ends.Again that internal diameter is bigger sleeve pipe 3 is enclosed within inwardly to insert on the sleeve pipe 2 from sleeve pipe 2 tail ends and puts in place, and sleeve pipe 2 is extracted in the otch expansion of the usefulness of further will performing the operation then out.When sleeve pipe 3 diameter of bore sizes can not satisfy the operation needs, then to insert sleeve pipe 4 again and extract sleeve pipe 3 out, even meet requirements of operation so that mouth is got involved in the expansion back up to inserting sleeve pipe 5.Had enough intervention mouth size because telescopic dilating effect this moment, and the instrument that can stretch into undergos surgery, and because telescopic protective effect, and apparatus such as scalpel can not run into surrounding tissue in operation process, has therefore improved the safety of operation.

Telescopic internal diameter and sleeve pipe quantity are selected according to the operation needs.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1, a kind of Wicresoft closure procedure expansion protector is characterized in that: comprise the positioning needle of a tip, and can be enclosed within least one sleeve pipe on the positioning needle that casing length is shorter than described positioning needle.

2, Wicresoft as claimed in claim 1 closure procedure expansion protector; it is characterized in that: described sleeve pipe is 2 to 5; internal diameter increases successively; and the less relatively sleeve pipe of internal diameter can insert in the relatively large sleeve pipe of internal diameter, and the less telescopic length of internal diameter is greater than the bigger telescopic length of internal diameter.

3, Wicresoft as claimed in claim 1 or 2 closure procedure expansion protector; it is characterized in that: also comprise a handle; have in the middle of the handle and can vertically pass described telescopic through hole; be provided with the radial location hole on position that handle communicates with described through hole and the casing wall, also have in the locating hole on alignment pin insertion casing wall and the handle to prevent that handle and sleeve pipe from relatively rotating.

4, Wicresoft as claimed in claim 3 closure procedure expansion protector; it is characterized in that: described handle is made up of fixed bar and two rod members of motion bar; describedly wear effective through hole and be positioned on the described fixed bar; described motion bar is installed in the end that fixed bar has through hole by screw thread and fixed bar coaxial line, and the motion bar end can be to the through hole convex for the through-hole wall on the fixed bar and insert and form described alignment pin in the locating hole on the sleeve pipe.

5, Wicresoft as claimed in claim 4 closure procedure expansion protector, it is characterized in that: a ledge structure is adopted in described motion bar end, and the step front end is not more than the locating hole on the described sleeve pipe, and the step rear end is greater than the locating hole on the described sleeve pipe.

6, Wicresoft as claimed in claim 4 closure procedure expansion protector, it is characterized in that: described motion bar end is provided with radial direction through hole.

7, Wicresoft as claimed in claim 1 or 2 closure procedure expansion protector, it is characterized in that: described sleeve pipe front end is butt end or splay end head, or arced terminus.

8, Wicresoft as claimed in claim 1 or 2 closure procedure expansion protector, it is characterized in that: the syringe needle of described positioning needle is coniform tip.

9, Wicresoft as claimed in claim 1 or 2 closure procedure expansion protector, it is characterized in that: the syringe needle of described positioning needle is rhizoma sparganic or four rib tips.