Automatic intermuscular retractor around anus

Abstract

The utility model relates to the technical field of medical instruments, in particular to an automatic retractor for intermusculars around an anus, which is mainly used for high anal fistula surgery or high intermuscular abscess surgery, and solves the problems that the operation is inconvenient and the exposed state of a wound surface is unstable when a deep wound surface is exposed by using an Eilius clamp or a drag hook in the prior art. The inner supporting rod extends into a gap between the inner sphincter and the outer sphincter and expands the inner sphincter towards the inner side, and the outer supporting rod expands the outer sphincter towards the outer side; the retractor is provided with a plate-shaped spring; the upper end of the inner supporting rod bends and extends towards the inner side and continues to bend and extend towards the side to form a first connecting section of the retractor, and the extending end of the first connecting section is fixedly connected with one end of a plate-shaped spring; the upper end of the outer supporting rod is bent and extends towards the outer side and is continuously bent and extends towards the side to form a second connecting section of the retractor, and the extending end of the second connecting section is fixedly connected with the other end of the plate-shaped spring; the supporting force of the retractor on the inner sphincter and the outer sphincter comes from the elastic force transmitted by the first connecting section and the second connecting section at the two ends of the plate-shaped spring.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an automatic retractor for muscles around the anus. Background Art

[0002] Surgery for high anal fistula or high intermuscular abscess requires an approach between the internal and external sphincters around the anus. After the epidermis is incised, because the intermuscular space is narrow and deep, an assistant needs to use Alice forceps or retractors to reach into the intermuscular space and spread it to both sides to expose the deep wound.

[0003] When using the retractor, the assistant needs to operate with both hands and keep it stable. The whole operation process consumes a lot of physical strength. In addition, the forces on the two retractors need to be as balanced and appropriate as possible to make the exposed deep wound surface stable and appropriate. Therefore, the use of retractors is inconvenient.

[0004] Although Alice forceps can be operated with one hand, relying on two fingers to keep the splint open for a long time will also cause the same problems as retractors, such as physical exertion and unstable wound exposure. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an automatic retractor for the muscles around the anus, which is mainly used for high anal fistula surgery or high intermuscular abscess surgery, and overcomes the problems of inconvenient operation and unstable wound exposure state when using Alice forceps or retractors to expose deep wounds.

[0006] The utility model solves the technical problem by adopting a technical solution: an automatic retractor for the muscles around the anus, comprising an inner support rod extending from a surgical incision into the gap between the inner and outer sphincters to open the inner sphincter inwardly and an outer support rod to open the outer sphincter outwardly;

[0007] The retractor also has a leaf spring;

[0008] The upper end of the inner support rod exposed from the surgical incision bends and extends inward and continues to bend and extend sideways to form a first connecting section of the retractor, and the extending end of the first connecting section is fixedly connected to one end of the plate spring;

[0009] The upper end of the outer support rod exposed from the surgical incision is bent and extended outward and then further bent and extended sideways to form a second connecting section of the retractor, and the extending end of the second connecting section is fixedly connected to the other end of the leaf spring;

[0010] The supporting force of the retractor on the internal and external sphincters comes from the elastic force at both ends of the plate spring transmitted by the first connecting section and the second connecting section.

[0011] In order to facilitate the positioning of the retractor at an extended position, the lower end of the inner support rod is provided with a first positioning protrusion facing the internal sphincter, and the lower end of the outer support rod is provided with a second positioning protrusion facing the external sphincter.

[0012] For easy operation, a first pressing button is integrally provided on the first connecting section, and a second pressing button is integrally provided on the second connecting section.

[0013] Also for the convenience of operation, the retractor is provided with a handle for supporting the retractor.

[0014] Specifically, the extending end of the first connecting section is welded to one end of the plate-shaped spring, and the extending end of the second connecting section is welded to the other end of the plate-shaped spring.

[0015] Alternatively, the extending end of the first connecting section is riveted to one end of the leaf spring, and the extending end of the second connecting section is riveted to the other end of the leaf spring.

[0016] Specifically, the inner support rod and the outer support rod have working parts in the shape of a regular trapezoid in the inner and outer directions, which are narrow at the top and wide at the bottom. The working parts are the parts of the retractor that contact the internal and external sphincters.

[0017] Alternatively, the inner support rod and the outer support rod have working parts in the shape of an inverted trapezoid in the inner-outer direction, which are wider at the top and narrower at the bottom. The working parts are the parts of the retractor that contact the internal and external sphincters.

[0018] The beneficial effects of the utility model are as follows: high-position anal fistula surgery or high-position intermuscular abscess surgery is mostly performed on adults, and the depth of the wound and the size of the incision are not much different, so the size specifications of the instrument are relatively easy to control; for the automatic intermuscular retractor around the anus of the utility model, an assistant only needs to use one hand to close the inner and outer support rods and then extend them into the muscle, and after releasing the inner and outer support rods, the elastic force of the plate spring can realize the expansion of the internal and external sphincters. If necessary during the operation, the retractor can be supported by one hand, and there is no need to apply the expansion force manually. The use of this instrument can make this type of operation convenient, the exposure state of the wound surface can be kept stable, and it is helpful to improve the quality of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a front view of the utility model.

[0022] In the figure: 1. inner support rod, 1-1. first positioning protrusion, 2. outer support rod, 2-1. second positioning protrusion, 3. plate spring, 4. first connecting section, 4-1. first push button, 5. second connecting section, 5-1. second push button, 6. handle, 7. working part. DETAILED DESCRIPTION

[0023] The present invention will now be further described in detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] As attached Figure 1 An automatic retractor for the muscles around the anus comprises an inner support rod 1 extending from a surgical incision into the intermuscular gap between the internal and external sphincters to open the internal sphincter inwardly and an outer support rod 2 extending the external sphincter outwardly, the geometric axis of the inner support rod 1 and the geometric axis of the outer support rod 2 being on the same plane, the geometric axes of the two being shown as a straight line, but may also be non-straight lines; the retractor further comprises a plate spring 3; the upper end of the inner support rod 1 exposed from the surgical incision is bent and extended inwardly and continues to bend and extend laterally to form a first connecting section 4 of the retractor, the extended end of the first connecting section 4 is fixedly connected to one end of the plate spring 3, the inner side points to the anus, the outer side points to the direction away from the anus, and the side points to the left and right directions, and the inner side points to the anus, the outer side points to the left and right directions, and the outer side points to the left and right directions. Figure 2 , the lateral direction is generally perpendicular to the length direction of the inner and outer struts;

[0025] The upper end of the outer support rod 2 exposed from the surgical incision is bent and extended outward and then further bent and extended sideways to form a second connecting section 5 of the retractor. The extended end of the second connecting section 5 is fixedly connected to the other end of the plate spring 3.

[0026] The first connecting section 4 and the second connecting section 5 are both connected to the plate spring 3, so the first connecting section 4 and the second connecting section 5 extend to the same side, that is, they both extend to the left or to the right on the side;

[0027] The supporting force of the retractor on the internal and external sphincters comes from the elastic force at both ends of the plate spring 3 transmitted by the first connecting section 4 and the second connecting section 5 .

[0028] The lower end of the inner support rod 1 is provided with a first positioning protrusion 1-1 facing the inner sphincter, and the lower end of the outer support rod 2 is provided with a second positioning protrusion 2-1 facing the outer sphincter.

[0029] The first connecting section 4 is integrally provided with a first pressing button 4 - 1 , and the second connecting section 5 is integrally provided with a second pressing button 5 - 1 .

[0030] The retractor is provided with a handle 6 for supporting the retractor, and the handle 6 is riveted and fixed to the middle part of the plate spring 3 .

[0031] The extended end of the first connecting section 4 is riveted to one end of the leaf spring 3, and the extended end of the second connecting section 5 is riveted to the other end of the leaf spring 3. It can also be another structure not shown in the figure, that is, the extended end of the first connecting section 4 is welded to one end of the leaf spring 3, and the extended end of the second connecting section 5 is welded to the other end of the leaf spring 3. Riveted connection is preferably used, mainly because the materials of the leaf spring 3 and the inner and outer support rods are different. The leaf spring 3 needs to use spring steel, while the inner and outer support rods and their extended sections are made of alloy material. Poor welding properties of different materials may affect the connection between them.

[0032] The inner support rod 1 and the outer support rod 2 have a working portion 7 in the shape of a regular trapezoid that is narrow at the top and wide at the bottom in the inner-outer direction. The working portion 7 is the portion of the retractor that contacts the internal and external sphincters. It can also be another form not shown in the figure, that is, the inner support rod 1 and the outer support rod 2 have a working portion 7 in the shape of an inverted trapezoid that is wide at the top and narrow at the bottom in the inner-outer direction.

[0033] When the utility model is used, the first pressing button 4-1 and the second pressing button 5-1 are pressed with the index finger and the thumb to bring the inner support rod 1 and the outer support rod 2 together. At this time, the handle 6 is placed against the palm, the plate spring 3 is bent, and the inner and outer support rods are inserted into the intermuscular space. After releasing the fingers, the inner and outer sphincters are stretched open by the elastic force of the plate spring 3, and the retractor is supported by the handle 6. When the insertion depth needs to be adjusted, the aforementioned action can be repeated.

[0034] With the above-mentioned ideal embodiment of the utility model as inspiration, through the above-mentioned description content, relevant staff can make various changes and modifications without departing from the scope of the technical idea of ​​the utility model. The technical scope of the utility model is not limited to the contents in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic retractor for the muscles around the anus, characterized by: The invention comprises an inner support rod (1) extending from a surgical incision into the intermuscular space between the inner and outer sphincters to open the inner sphincter inwardly, and an outer support rod (2) extending the outer sphincter outwardly; The retractor also has a plate spring (3); The upper end of the inner support rod (1) exposed from the surgical incision bends inward and extends and then continues to bend and extend sideways to form a first connecting section (4) of the retractor, and the extended end of the first connecting section (4) is fixedly connected to one end of the plate spring (3); The upper end of the outer support rod (2) exposed from the surgical incision is bent and extended outward and then further bent and extended sideways to form a second connecting section (5) of the retractor, and the extended end of the second connecting section (5) is fixedly connected to the other end of the plate spring (3); The supporting force of the retractor on the internal and external sphincters is derived from the elastic force at both ends of the plate spring (3) transmitted by the first connecting section (4) and the second connecting section (5).

2. The automatic retractor for perianal muscles according to claim 1, characterized in that: The lower end of the inner support rod (1) is provided with a first positioning protrusion (1-1) facing the internal sphincter, and the lower end of the outer support rod (2) is provided with a second positioning protrusion (2-1) facing the external sphincter.

3. The automatic retractor for perianal muscles according to claim 1, characterized in that: The first connecting section (4) is integrally provided with a first pressing button (4-1), and the second connecting section (5) is integrally provided with a second pressing button (5-1).

4. The automatic retractor for perianal muscles according to claim 1, characterized in that: The retractor is provided with a handle (6) for supporting the retractor.

5. The automatic retractor for perianal muscles according to claim 1, characterized in that: The extended end of the first connecting section (4) is welded to one end of the plate-shaped spring (3), and the extended end of the second connecting section (5) is welded to the other end of the plate-shaped spring (3).

6. The automatic retractor for perianal muscles according to claim 1, characterized in that: The extended end of the first connecting section (4) is riveted to one end of the plate-shaped spring (3), and the extended end of the second connecting section (5) is riveted to the other end of the plate-shaped spring (3).

7. The automatic retractor for perianal muscles according to claim 1, characterized in that: The inner support rod (1) and the outer support rod (2) have a working portion (7) in the shape of a regular trapezoid, which is narrow at the top and wide at the bottom in the inner and outer directions. The working portion (7) is the part of the retractor that contacts the internal and external sphincters.

8. The automatic retractor for perianal muscles according to claim 1, characterized in that: The inner support rod (1) and the outer support rod (2) are provided with an inverted trapezoidal working portion (7) in the inner and outer directions, which is wide at the top and narrow at the bottom. The working portion (7) is the part of the retractor that contacts the internal and external sphincters.

Images