CN209422087U - Ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy - Google Patents

Abstract

The utility model discloses ischial ramus osteotomy tunnel dilators used in a kind of Periacetabular osteotomy, including dilator and built-in soft tissue expander, dilator includes handle one, handle two, strut sleeve and fixing screws, strut the cylinder that sleeve is made of semicircular cylinder one and semicircular cylinder two, it is movably hinged between the global facility that handle one and the global facility formed of semicircular cylinder two and handle two and semicircular cylinder one form by hinged screw, fixing screws one end is fixedly connected with handle one, the other end passes through handle two and is equipped with the nut that can be tightened, built-in soft tissue expander can be set in and strut sleeve inner.The dilator of the utility model struts rear diameter about 3-4cm completely, distal end penetrates through, facilitate insertion into osteotome, built-in soft tissue expander, which is inserted into strut, can avoid soft tissue obstruction in sleeve, osteotome is inserted into after row of channels expansion to be operated, become operating process simply, and avoids the risk of important soft tissue around damage.

Description

Ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy

Technical field

The utility model relates to the field of medical instrument technology, it is specifically related to seat used in a kind of Periacetabular osteotomy Bone branch osteotomy tunnel dilator.

Background technique

Periacetabular osteotomy is the effective means of the young acetabular development patient for the treatment of, and it is big to implement this operating difficulty, Technical requirements are high, need using special instrument both shoulders osteotome.

In the osteotomy of improved Ilioinguinal approach approach, ischial ramus osteotomy is by closing in front of iliopsoas tendon and hip joint Gap between condyle enters, and then carries out depending under blind.The position is deeper, and exposure is relatively difficult.It is needed in art by the gap Both shoulders osteotome could be inserted into and be operated after expansion, since osteotome there are two teeth, blade is than relatively sharp, during insertion usually Because surrounding soft tissue's blocking is relatively difficult, and careless manipulation may damage surrounding tissue.

Based on the above issues, the utility model proposes one soft tissue tunnel dilator of meter, is first implanted into expander in art, will Channel expands, and replants under expander protection into osteotome, becomes operating process simply, and avoid damage to important soft tissue around Risk.

Utility model content

Above-mentioned to solve the problems, such as, the utility model provides ischial ramus used in a kind of Periacetabular osteotomy Osteotomy tunnel dilator.

The technical solution of the utility model is: a kind of expansion of ischial ramus osteotomy channel used in Periacetabular osteotomy Device, including dilator and built-in soft tissue expander, the dilator include handle one, handle two, strut sleeve and fixed spiral shell Nail, the cylinder for strutting sleeve and being made of semicircular cylinder one and semicircular cylinder two, the handle one is integrated with semicircular cylinder two to be set Meter, the handle two are integrated design with semicircular cylinder one, the global facility and handle two and half that handle one and semicircular cylinder two form It is movably hinged between the global facility that cylinder one forms by hinged screw, so that handle one and semicircular cylinder two formed It can be described around the hinged screw relative motion between global facility and the global facility of handle two and semicircular cylinder one composition Fixing screws one end is fixedly connected with handle one, and the other end passes through the handle two and is equipped with the nut that can be tightened, energy It is enough to adjust the distance between semicircular cylinder one and semicircular cylinder two by adjusting the nut；The built-in soft tissue expander and support It is identical to open length sleeve, built-in soft tissue expander can be set in and strut sleeve inner.

Further, the sleeve bottom that struts just rides with aduncate recessed portion in order to strut sleeve On the surface of backbone, the goodness of fit is higher, and soft tissue is avoided to be embedded in from gap.

Further, the proximal end of the built-in soft tissue expander has the tail cap increased, distally has the taper of circle Portion, main function are to push soft tissue open in built-in soft tissue expander's insertion process, avoid soft tissue blocking from strutting sleeve remote End, can extract after being inserted in place, and can reduce soft tissue injury in insertion.

Further, the built-in soft tissue expander is solid construction.

The beneficial effects of the utility model are: the dilator of the utility model struts rear diameter about 3-4cm completely, distally pass through It is logical, osteotome is facilitated insertion into, built-in soft tissue expander is inserted into strutting in sleeve for dilator, avoids after dilator struts Soft tissue obstruction, the taking-up dropped again after insertion can carry out channel expansion and be operated by strutting sleeve insertion osteotome, be made Operating process becomes simply, and avoids the risk of important soft tissue around damage.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Wherein, 1- fixing screws, 1a- nut, 2- dilator, 2a- handle one, 2b- handle two, 3- strut sleeve, 3a- half Cylinder one, 3b- semicircular cylinder two, 3c- recessed portion, soft tissue expander, 4a- tail cap, 4b- tapered portion, the hinged screw of 5- built in 4-.

Specific embodiment

Ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy as shown in Figure 1, including dilator 2 With built-in soft tissue expander 4, dilator 2 includes one 2a of handle, two 2b of handle, struts sleeve 3 and fixing screws 1, struts set The cylinder that cylinder 3 is made of one 3a of semicircular cylinder and two 3b of semicircular cylinder, one 2a of handle and two 3b of semicircular cylinder are integrated design, handle two 2b and one 3a of semicircular cylinder is integrated design, the global facility and two 2b of handle and semicircular cylinder of one 2a of handle and two 3b of semicircular cylinder composition It is movably hinged between the global facility of one 3a composition by hinged screw 5, so that one 2a of handle and two 3b group of semicircular cylinder At global facility and two 2b of handle and one 3a of semicircular cylinder composition global facility between can be around the opposite fortune of hinged screw 5 Dynamic, 1 one end of fixing screws is fixedly connected with one 2a of handle, and the other end passes through two 2b of handle and is equipped with the nut that can be tightened 1a can adjust the distance between two 3b of one 3a of semicircular cylinder and semicircular cylinder by regulating nut 1a；Built-in soft tissue expander 4 Identical as 3 length of sleeve is strutted, built-in soft tissue expander 4, which can be set in, to be strutted inside sleeve 3.Strut 3 bottom of sleeve tool There is aduncate recessed portion 3c, in order to strut the surface that sleeve just straddles backbone, the goodness of fit is higher, avoids soft tissue It is embedded in from gap.The proximal end of built-in soft tissue expander 4 has the tail cap 4a increased, distally has the tapered portion 4b of circle, main Acting on is to push soft tissue open in built-in soft tissue expander's insertion process, and soft tissue blocking is avoided to strut hub distal end, It can be extracted after being inserted in place, and soft tissue injury can be reduced in insertion, built-in soft tissue expander 4 is solid construction.

The dilator of the utility model when in use, struts rear diameter about 3-4cm completely, and distal end penetrates through, and facilitates insertion into bone Knife, built-in soft tissue expander are inserted into strutting in sleeve for dilator, soft tissue are avoided to block after dilator struts, and insert The taking-up dropped again after entering can carry out channel expansion and be operated by strutting sleeve insertion osteotome, become operating process Simply, and the risk for damaging the important soft tissue of surrounding is avoided.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It can still modify to technical solution documented by previous embodiment, or be equal to part of technical characteristic Replacement；And these are modified or replaceed, the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution Spirit and scope.

Claims (4)

1. ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy, which is characterized in that including dilator (2) With built-in soft tissue expander (4), the dilator (2) includes handle one (2a), handle two (2b), struts sleeve (3) and consolidate Determine screw (1), the cylinder for strutting sleeve (3) and being made of semicircular cylinder one (3a) and semicircular cylinder two (3b), the handle one (2a) and semicircular cylinder two (3b) is integrated design, and the handle two (2b) and semicircular cylinder one (3a) are integrated design, handle one Between the global facility and handle two (2b) of (2a) and semicircular cylinder two (3b) composition and the global facility of semicircular cylinder one (3a) composition It is movably hinged by hinged screw (5), so that the global facility and handle of handle one (2a) and semicircular cylinder two (3b) composition It can be described around hinged screw (5) relative motion between hand two (2b) and the global facility of semicircular cylinder one (3a) composition Fixing screws (1) one end is fixedly connected with handle one (2a), and the other end passes through the handle two (2b) and is equipped with and can screw admittedly Fixed nut (1a), can be adjusted by adjusting the nut (1a) between semicircular cylinder one (3a) and semicircular cylinder two (3b) away from From；The built-in soft tissue expander (4) is identical as sleeve (3) length is strutted, and built-in soft tissue expander (4) can be set in It is internal to strut sleeve (3).

2. ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy according to claim 1, special Sign is that sleeve (3) bottom that struts is with aduncate recessed portion (3c).

3. ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy according to claim 1, special Sign is that the proximal end of the built-in soft tissue expander (4) has the tail cap (4a) increased, distally has the tapered portion of circle (4b)。

4. ischial ramus osteotomy tunnel dilator used in a kind of Periacetabular osteotomy according to claim 3, special Sign is that the built-in soft tissue expander (4) is solid construction.