Dilator for surgical operations

Abstract

The utility model relates to medical instrument technical field discloses a kind of dilating anus instruments for surgical operation, including main component, including dilating anus instrument, handle is fixed in the bottom of dilating anus instrument, reset torsional spring is fixed in the handle side, positioning assembly, positioning component is set on the handle, including positioning piece, the positioning piece includes locating post, the locating post is set in the handle side, ratchet wheel is fixed in the one end of locating post, the ratchet wheel top is provided with pawl.The utility model has beneficial effect that: after dilating anus instrument double-leaf is opened to specified position by using spanner operation, the limiting of spanner can be implemented, so that the hand muscle fatigue and tremor problem caused by continuous wrenching can be avoided, the stability of dilating anus instrument double-leaf opening state is guaranteed, the constancy of surgical field is maintained, so that the precision and coherence of surgical operation are effectively improved, and the smooth development of operation is assisted.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a surgical anal dilator. Background Technology

[0002] A surgical anal dilator is a medical device used in anorectal surgery and related examinations. It is primarily used to open the anal canal and rectum, expanding the field of vision within the anus and anal canal. This allows doctors to clearly observe local tissue conditions, make diagnoses, and perform surgical procedures such as hemorrhoidectomy. After inserting the dilator into the anal canal to the appropriate position, the doctor pulls the lever to expand the double-leaf structure outwards, thereby opening the anus and anal canal and expanding the field of vision for subsequent operations. The dilator usually has a torsion spring to assist in the opening and repositioning of the double leaves. The spring itself possesses elastic potential energy. When the wrench is used to open the two blades, the torsion spring deforms and stores energy. When the two blades need to be closed at the end of the surgery, the torsion spring releases the stored energy to help the two blades return to their initial closed state. During the process of using the wrench to open the two blades of the anal dilator, the operator needs to continuously operate the wrench. Over time, the hand muscles are prone to fatigue, and hand fatigue may cause slight tremors, resulting in an unstable degree of opening of the two blades of the anal dilator, with slight shaking and angle changes. This is extremely detrimental to maintaining a stable surgical field and affects the surgical operation. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing surgical anal dilators, this utility model is proposed.

[0005] Therefore, the problem that this utility model aims to solve is that when operating the anal dilator with a wrench, the double blades need to be continuously turned, which easily leads to hand fatigue and trembling, making the double blades unstable and affecting the surgical field of vision and operation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a surgical anal dilator, which includes a main body component, including an anal dilator, wherein a handle is fixed to the bottom of the anal dilator, and a return torsion spring is fixed to one side of the handle; A positioning component is disposed on the handle and includes a positioning element, the positioning element including a positioning post, the positioning post being disposed on one side of the handle, a ratchet being fixed to one end of the positioning post, and a pawl being disposed on the top of the ratchet.

[0007] In a preferred embodiment of the surgical anal dilator of the present invention, the ratchet is provided with a positioning groove corresponding to the pawl, and the pawl engages with the positioning groove.

[0008] In a preferred embodiment of the surgical anal dilator of the present invention, the positioning component further includes a movable component, the movable component including a rotating column, the rotating column being fixed to one side of the pawl, and a movable plate being fixed to one side of the pawl.

[0009] As a preferred embodiment of the surgical anal dilator of the present invention, wherein: a first torsion spring is fixed to one side of the pawl, and one end of the first torsion spring is fixed to one side of the handle.

[0010] In a preferred embodiment of the surgical anal dilator of this utility model, a squeezing strip is inserted into one side of the movable plate, the squeezing strip and the movable plate are hinged, and a squeezing frame is sleeved on the outside of the squeezing strip.

[0011] In a preferred embodiment of the surgical anal dilator of the present invention, a lower pressure plate is fixed to one side of the compression frame, and a toggle plate is fixed to the top of the lower pressure plate.

[0012] In a preferred embodiment of the surgical anal dilator of this utility model, a positioning strip is inserted into the bottom of the lower pressure plate, the positioning strip and the lower pressure plate are movably connected, and a spring is fixed to the bottom of the lower pressure plate.

[0013] In a preferred embodiment of the surgical anal dilator of the present invention, the positioning component further includes a support member, the support member including a support box, the support box being sleeved on the outside of the ratchet, and the support box and the ratchet being rotatably connected by a rotating shaft.

[0014] In a preferred embodiment of the surgical anal dilator of the present invention, a protective cover is provided on the outer side of the pawl, and the protective cover and the pawl are rotatably connected by a rotating shaft.

[0015] In a preferred embodiment of the surgical anal dilator of the present invention, a connecting frame is provided on the outer side of the positioning strip, and the connecting frame is fixed to one side of the handle.

[0016] The beneficial effects of this utility model are as follows: after the double blades of the anal dilator are opened to the designated position using a wrench, the wrench can be limited, thereby avoiding hand muscle fatigue and tremors caused by continuous wrenching, ensuring the stability of the double blades of the anal dilator, maintaining the constancy of the surgical field, thereby effectively improving the accuracy and continuity of the surgical operation, and helping the surgery to proceed smoothly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a structural diagram of a surgical anal dilator.

[0018] Figure 2 A cross-sectional view of the handle of a surgical anal dilator.

[0019] Figure 3 Diagram of the ratchet structure of a surgical anal dilator.

[0020] Figure 4 This is a diagram of the spring structure of a surgical anal dilator. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example 1 Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a surgical anal dilator, which includes a main body component 100 and a positioning component 200. The two components work together to limit the wrench after the double blades of the anal dilator are opened, preventing hand fatigue and tremors, improving the accuracy and continuity of operation, and facilitating the operation.

[0025] The main component 100 includes an anal dilator 101, with a handle 102 fixed to the bottom of the anal dilator 101 and a reset torsion spring 103 fixed to one side of the handle 102.

[0026] There are two anal dilators 101 and two handles 102, both fixed to the bottom of the anal dilator 101. The two handles 102 are connected by a hinge. The return torsion spring 103 is fixed at the hinge. When one handle 102 is squeezed, the other handle 102 will remain stationary. Then the two anal dilators 101 can move towards each other. During this process, a torsional force can be applied to the return torsion spring 103. When the handle 102 is released, the force of the return torsion spring 103 can drive the handle 102 back to its original position, thereby allowing the anal dilator 101 to return to its original position.

[0027] The positioning component 200 is disposed on the handle 102 and includes a positioning element 201. The positioning element 201 includes a positioning post 2011. The positioning post 2011 is disposed on one side of the handle 102. A ratchet 2012 is fixed to one end of the positioning post 2011, and a pawl 2013 is disposed on the top of the ratchet 2012.

[0028] One end of the positioning pin 2011 is fixed to one side of the handle 102, and the other end is rotatably connected to the other handle 102 via a pivot. When one of the handles 102 is squeezed, the positioning pin 2011 can be rotated. The rotation of the positioning pin 2011 can drive the ratchet 2012 to rotate. At this time, the pawl 2013 will not limit the ratchet 2012. Then the handle 102 can be moved to expand the anal dilator 101. The engagement of the pawl 2013 and the ratchet 2012 can limit the handle 102 in one direction, thereby preventing the force of the return torsion spring 103 from causing the handle 102 to return to its original position.

[0029] Example 2 Reference Figures 2-4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0030] Specifically, the ratchet 2012 has a positioning groove 2012-1 corresponding to the pawl 2013, and the pawl 2013 engages with the positioning groove 2012-1.

[0031] The pawl 2013 is set as an inclined surface. When the handle 102 is moved to make the ratchet 2012 rotate, it can drive the positioning groove 2012-1 to rotate on one side of the pawl 2013. The ratchet 2012 can be unidirectionally limited by the engagement of the pawl 2013 and the positioning groove 2012-1. At this time, the operator does not need to continuously squeeze the handle 102.

[0032] Specifically, the positioning component 200 also includes a movable component 202, which includes a rotating column 2021. The rotating column 2021 is fixed to one side of the pawl 2013, and a movable plate 2022 is fixed to one side of the pawl 2013.

[0033] The rotating column 2021 is rotatably connected to one side of the handle 102 via a rotating shaft. When it is necessary to return the squeezed handle 102 to its original position, the movable plate 2022 is moved. At this time, the movable plate 2022 can drive the pawl 2013 to rotate and separate from the positioning groove 2012-1, thereby releasing the limit on the ratchet 2012. Then, the return torsion spring 103 can drive the handle 102 to its original position through the force of rotation. The rotating column 2021 is used to support the pawl 2013 and prevent the pawl 2013 from shifting.

[0034] Specifically, a first torsion spring 2023 is fixed to one side of the pawl 2013, and one end of the first torsion spring 2023 is fixed to one side of the handle 102.

[0035] When the pawl 2013 is moved to separate it from the positioning groove 2012-1, a torsional force can be applied to the first torsion spring 2023. After the handle 102 returns to its original position, the pawl 2013 is released. At this time, the force of the first torsion spring 2023 can drive the pawl 2013 to re-engage with the positioning groove 2012-1, so that the handle 102 can be unidirectionally limited again for the next use.

[0036] Specifically, an extrusion strip 2024 is inserted into one side of the movable plate 2022, the extrusion strip 2024 and the movable plate 2022 are hinged, and an extrusion frame 2025 is sleeved on the outside of the extrusion strip 2024.

[0037] Moving the extrusion frame 2025 can move the extrusion bar 2024, which in turn can move the movable plate 2022, thereby allowing the pawl 2013 to move and separate from the positioning groove 2012-1.

[0038] Specifically, a lower pressure plate 2026 is fixed on one side of the extrusion frame 2025, and a toggle plate 2027 is fixed on the top of the lower pressure plate 2026.

[0039] The pressure plate 2026 can move the extrusion frame 2025 by moving the pressure plate 2026. The toggle plate 2027 is designed to facilitate the movement of the pressure plate 2026 by the user. When holding the handle 102, the operator can move the toggle plate 2027 by using the thumb.

[0040] Specifically, a positioning strip 2028 is inserted into the bottom of the lower pressure plate 2026, and the positioning strip 2028 is movably connected to the lower pressure plate 2026. A spring 2029 is fixed to the bottom of the lower pressure plate 2026.

[0041] When the lower pressure plate 2026 moves, it can move on the positioning strip 2028, which can support the lower pressure plate 2026 and prevent it from shifting. When the lower pressure plate 2026 moves, it can apply a squeezing force to the spring 2029. When the lower pressure plate 2026 is released, the spring force of the spring 2029 can drive the lower pressure plate 2026 back to its original position for the next use.

[0042] Example 3 Reference Figures 1-4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0043] Specifically, the positioning component 200 also includes a support member 203, which includes a support box 2031. The support box 2031 is sleeved on the outside of the ratchet 2012, and the support box 2031 and the ratchet 2012 are rotatably connected by a rotating shaft.

[0044] The support box 2031 is fixed to one side of the handle 102. The support box 2031 can support the ratchet 2012 and prevent the ratchet 2012 from shifting.

[0045] Specifically, a protective cover 2032 is fitted on the outside of the pawl 2013, and the protective cover 2032 and the pawl 2013 are rotatably connected by a pivot.

[0046] The protective cover 2032 is fixed to one side of the handle 102, and the pawl 2013 can be protected by the protective cover 2032.

[0047] Specifically, a connecting frame 2033 is fitted on the outer side of the positioning strip 2028, and the connecting frame 2033 is fixed to one side of the handle 102.

[0048] One end of the spring 2029 is fixed to the inner wall of the connecting frame 2033. The connecting frame 2033 is sleeved on the outside of the actuating plate 2027. The connecting frame 2033 and the actuating plate 2027 are movably connected. The positioning strip 2028 can be supported by the connecting frame 2033.

[0049] In use, one of the handles 102 is first squeezed, while the other handle 102 remains stationary. Then, the two anal dilators 101 can be moved toward each other. During this process, a torsional force is applied to the reset torsion spring 103, which in turn drives the positioning pin 2011 to rotate. The rotation of the positioning pin 2011 drives the ratchet 2012 to rotate. When the ratchet 2012 rotates, it drives the positioning groove 2012-1 to rotate on the side of the pawl 2013. At this time, the pawl 2013 will not limit the ratchet 2012. Then, the handle 102 can be moved to expand the anal dilator 101. The engagement of the pawl 2013 and the positioning groove 2012-1 can limit the ratchet 2012 in one direction, thus preventing the force of the reset torsion spring 103 from causing the handle 102 to return to its original position.

[0050] After use, pressing the actuating plate 2027 causes the lower pressure plate 2026 to move. The movement of the lower pressure plate 2026 applies a compressive force to the spring 2029. The movement of the lower pressure plate 2026 causes the compression frame 2025 to move, which in turn moves the compression bar 2024. The movement of the compression bar 2024 then moves the movable plate 2022. The movement of the movable plate 2022 causes the pawl 2013 to move and separate from the positioning groove 2012-1. When the pawl 2013 is moved to separate from the positioning groove 2012-1, a torsional force is applied to the first torsion spring 2023. After the 2013 moves and separates from the positioning groove 2012-1, the ratchet 2012 can be released from its limiting position. Then, the handle 102 can be driven back to its original position by the force of the return torsion spring 103, thereby allowing the anal dilator 101 to return to its original position. At this time, the toggle plate 2027 is released, and the spring 2029 returns to its original position by the force of the return. After the lower pressure plate 2026 returns to its original position, the first torsion spring 2023 rotates, causing the pawl 2013 to re-engage with the positioning groove 2012-1, thereby allowing the handle 102 to be unidirectionally limited again for the next use.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A surgical anal dilator, characterized in that: include, The main body component (100) includes an anal dilator (101), a handle (102) is fixed to the bottom of the anal dilator (101), and a return torsion spring (103) is fixed to one side of the handle (102). A positioning component (200) is disposed on the handle (102) and includes a positioning element (201). The positioning element (201) includes a positioning post (2011). The positioning post (2011) is disposed on one side of the handle (102). A ratchet (2012) is fixed at one end of the positioning post (2011). A pawl (2013) is disposed at the top of the ratchet (2012).

2. The surgical anal dilator as described in claim 1, characterized in that: The ratchet (2012) has a positioning groove (2012-1) corresponding to the pawl (2013), and the pawl (2013) engages with the positioning groove (2012-1).

3. The surgical anal dilator as described in claim 2, characterized in that: The positioning component (200) further includes a movable component (202), which includes a rotating column (2021) fixed to one side of the pawl (2013), and a movable plate (2022) fixed to one side of the pawl (2013).

4. The surgical anal dilator as described in claim 3, characterized in that: A first torsion spring (2023) is fixed to one side of the pawl (2013), and one end of the first torsion spring (2023) is fixed to one side of the handle (102).

5. The surgical anal dilator as described in claim 4, characterized in that: An extrusion strip (2024) is inserted into one side of the movable plate (2022), the extrusion strip (2024) and the movable plate (2022) are hinged, and an extrusion frame (2025) is sleeved on the outside of the extrusion strip (2024).

6. The surgical anal dilator as described in claim 5, characterized in that: A lower pressure plate (2026) is fixed on one side of the extrusion frame (2025), and a toggle plate (2027) is fixed on the top of the lower pressure plate (2026).

7. The surgical anal dilator as described in claim 6, characterized in that: A positioning strip (2028) is inserted into the bottom of the lower pressure plate (2026), the positioning strip (2028) and the lower pressure plate (2026) are movably connected, and a spring (2029) is fixed to the bottom of the lower pressure plate (2026).

8. The surgical anal dilator as described in claim 7, characterized in that: The positioning component (200) further includes a support member (203), which includes a support box (2031). The support box (2031) is sleeved on the outside of the ratchet (2012), and the support box (2031) and the ratchet (2012) are rotatably connected by a rotating shaft.

9. The surgical anal dilator as described in claim 8, characterized in that: A protective cover (2032) is fitted on the outside of the pawl (2013), and the protective cover (2032) and the pawl (2013) are rotatably connected by a pivot.

10. The surgical anal dilator as described in claim 9, characterized in that: A connecting frame (2033) is fitted on the outside of the positioning strip (2028), and the connecting frame (2033) is fixed to one side of the handle (102).

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