CN108784761B - Spreader for the subscapularis - Google Patents

Abstract

The invention discloses a spreader for subscapularis, which comprises a slide bar, an outer sleeve and a spreading component, wherein the outer sleeve is sleeved outside the slide bar; when the outer sleeve is pulled out along the sliding rod, the other end of the opening assembly is tilted outwards to open the subscapular muscle. According to the invention, through the cooperation among the slide bar, the outer sleeve and the opening assembly, the coracoid process is simplified, the operation time is further shortened, and the operation effect is improved.

Description

Spreader for the subscapularis

technical field

The invention belongs to the technical field of medical instruments and equipment for operation, and in particular relates to a spreader for the subscapularis muscle.

Background technique

In the process of subscapularis surgery, the cut coracoid process needs to be fixed in the glenoid bony defect area of the shoulder joint; the existing special instruments for this process are cumbersome to use, and need to be positioned and pierced through the arthroscopic exchange rod first After the subscapularis, conventional arthroscopic instruments are used to widen the piercing exit in front. The process is recurrent and inefficient, which makes it slow and difficult to fix the coracoid process in the proper position of the glenoid under the microscope; If the lower muscle is separated, a little carelessness will touch or injure important surrounding blood vessels and nerves, which will affect the final surgical effect and even endanger the patient's life.

Contents of the invention

The purpose of the present invention is to provide a spreader for the subscapularis, through the cooperation between the slide bar, the outer sleeve and the spreader assembly, the process of spreading the coracoid process is simplified, thereby reducing the operation time and improving the The effect of surgery.

The technical scheme adopted in the present invention is:

A spreader for the subscapularis, which includes a slide bar, an outer sleeve and a spreader assembly, the outer sleeve is set outside the slide bar, and the spreader assembly is arranged on the slide bar and the outer sleeve and one end is fixed on the sliding bar; when the outer sleeve is pulled out along the sliding bar, the other end of the stretching assembly tilts outward to stretch the subscapularis muscle.

The present invention is also characterized in that,

The expansion assembly includes a pull rod and a shrapnel. One end of the pull rod and the shrapnel are fixed on the slide bar. The shrapnel includes two vertical bars arranged in parallel. hook.

There are two stretching components, which are respectively symmetrically arranged on the upper and lower sides or the left and right sides of the slide bar 1 .

The end of the sliding rod inserted into the subscapularis is provided with a frustum-shaped protective sleeve, and the sliding rod and the protective sleeve are integrally formed.

The sliding rod is a hollow structure.

It further includes a sliding assembly, the sliding assembly is sheathed outside the sliding rod, and one end of the pull rod is fixed on the sliding assembly.

The sliding assembly includes a sliding sleeve, and the sliding sleeve is provided with a pressing piece for fixing the pull rod.

The sliding bar is also provided with a protrusion for fixing the elastic piece.

A handle for borrowing force is arranged on the outer sleeve.

Compared with the prior art, when in use, pull out the outer sleeve, pull one end of the stretching assembly to move along the slide bar, and the other end of the stretching assembly tilts outward to stretch the subscapularis muscle. The whole process is simple and convenient , which simplifies the process of opening the coracoid process with the existing spreader, thereby reducing the operation time and improving the operation effect.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the spreader that is used for subscapularis provided by the embodiment of the present invention;

Fig. 2 is a schematic diagram of the internal structure of a spreader for the subscapularis provided by an embodiment of the present invention;

Figure 3 is an exploded view of a spreader for the subscapularis provided by an embodiment of the present invention;

Fig. 4 is another exploded view of the spreader for the subscapularis muscle provided by the embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a distraction assembly of a distractor for the subscapularis provided by an embodiment of the present invention;

Figure 6 is a perspective view of a spreader for the subscapularis provided by an embodiment of the present invention;

7-10 are exploded views of the use process of the spreader for the subscapularis muscle provided by the embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The embodiment of the present invention provides a spreader for the subscapularis, as shown in Figures 1-6, which includes a slide bar 1, an outer sleeve 2 and a spreader assembly 3, and the outer sleeve 2 is sleeved on the outside of the slide bar 1 , the expansion assembly 3 is arranged in the gap between the slide bar 1 and the outer sleeve 2 and one end is fixed on the slide bar 1; in this way, when the outer sleeve 2 is pulled out along the slide bar 1, the other end of the expansion assembly 3 Curl outward to stretch the subscapularis.

The expansion assembly 3 includes a pull rod 31 and a spring piece 32. One end of the pull rod 31 and the spring piece 32 are both fixed on the slide bar 1. The spring piece 32 includes two vertical rods 321 arranged in parallel, and the vertical rod is far away from one end of the spring piece. An inward hook 322 is provided, so that when the pull rod 31 is pulled, the end connected to the pull rod 31 and the elastic piece 32 will tilt outward, so as to realize the stretching of the subscapularis muscle.

There are two stretching components 3, which are symmetrically arranged on the upper and lower sides or the left and right sides of the slide bar 1 respectively.

One end of the slide bar 1 inserted into the subscapularis is provided with a frustum-shaped protective cover 4, the slide bar 1 and the protective cover 4 are integrally formed, one end of the protective cover 4 is matched with the slide bar 1, and the other end is matched with the outer sleeve 2, thus avoiding Human tissue enters the gap between the outer sleeve 2 and the slide bar 1.

The slide bar 1 is a hollow structure, so when in use, the slide bar 1 of the hollow structure can pass through the exchange rod, which is convenient to use.

It further includes a sliding assembly 5, the sliding assembly 5 is set outside the sliding rod 1, and one end of the pull rod 31 is fixed on the sliding assembly 5, the sliding assembly 5 includes a sliding sleeve 51, and the sliding sleeve 51 is provided with a pressing piece for fixing the pull rod 31 52. In this way, the pull rod 31 is fixed on the moving ring 51 through the pressing piece 52, and the pull rod 31 is moved back and forth along the slide bar 1 through the moving ring 51, thereby realizing the expansion of the subscapularis muscle.

The sliding bar 1 is also provided with a protrusion 11 for fixing the elastic piece 32 , thus avoiding the movement of the elastic piece 32 during the process of pulling the pull rod 31 .

The outer sleeve 2 is provided with a handle 21 for borrowing force, so that the outer sleeve 2 can be pulled out through the handle 21 during use, which is simple and convenient to use.

How to use: As shown in Figure 7-10, first insert the medical exchange rod into the subscapularis muscle that needs to be stretched, and then put the spreader on the exchange rod through the sliding rod 1 of the hollow structure, and pull out the outer sleeve 2. Pull the moving ring 51 to move the pull rod 31 backward along the slide rod 1. At this time, the end connecting the pull rod 31 and the shrapnel 32 will tilt outward to realize the stretching of the subscapularis muscle. During the whole process, the protective cover 4 prevents Human tissue enters the gap between the outer sleeve 2 and the slide bar 1.

Using the above scheme, compared with the prior art, when in use, pull out the outer sleeve, pull one end of the stretching assembly to move along the slide bar, and the other end of the stretching assembly tilts outward to stretch the subscapularis muscle, The whole process is simple and convenient, which simplifies the process of opening the coracoid process with the existing spreader, thereby reducing the operation time and improving the operation effect.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. a spreader for subscapularis, characterized in that it comprises a slide bar, an outer sleeve and a stretch assembly, the outer sleeve is sleeved outside the slide bar, and the stretch assembly is arranged on the In the gap between the slide bar and the outer sleeve and one end is fixed on the slide bar; when the outer sleeve is pulled out along the slide bar, the other end of the stretching assembly tilts outward to stretch the subscapularis; The expansion assembly includes a pull rod and a shrapnel. One end of the pull rod and the shrapnel are fixed on the slide bar. The shrapnel includes two vertical bars arranged in parallel. hook. 2. The spreader for subscapularis according to claim 1, characterized in that there are two spreader components, which are respectively symmetrically arranged on the upper and lower sides or the left and right sides of the slide bar. 3. The spreader for subscapularis according to claim 2, characterized in that, one end of the slide bar inserted into the subscapularis is provided with a frustum-shaped protective cover, and the slide bar and the protective cover are integrally formed . 4. The spreader for subscapularis according to any one of claims 1-3, characterized in that the sliding rod is a hollow structure. 5. The spreader for subscapularis according to claim 4, characterized in that it further comprises a sliding assembly, the sliding assembly is sleeved outside the sliding rod, and one end of the pull rod is fixed on the sliding assembly . 6 . The spreader for subscapularis according to claim 5 , wherein the sliding assembly comprises a sliding sleeve, and the sliding sleeve is provided with a pressing piece for fixing the pull rod. 7 . 7 . The spreader for subscapularis according to claim 6 , characterized in that, the sliding bar is also provided with a protrusion for fixing the shrapnel. 8 . 8. The spreader for subscapularis according to claim 7, characterized in that, the outer sleeve is provided with a handle for borrowing force.