Incision fixator with adjustable incision size

Abstract

The utility model discloses an incision fixator with an adjustable incision size, and relates to the technical field of incision fixers. The device comprises a base, an exposure opening is vertically formed in the base, a first bevel gear is rotationally matched in the base, a driving piece is rotationally matched with the side portion of the base, and the driving piece is meshed with the first bevel gear; the lower portion of the base is rotationally matched with three tilting expansion pieces, extrusion pieces corresponding to the tilting expansion pieces are arranged in the base in a sliding fit mode, the peripheral sides of the extrusion pieces are in threaded fit with gear rings, and the gear rings are meshed with the side portions of the inner walls of the first bevel gears. The gear rings and the tilting expanding pieces are located on the side portion of the exposed opening, the probability that the gear rings and the tilting expanding pieces shield the exposed opening is reduced, an incision can be observed conveniently through the exposed opening, a surgical tool penetrates through the exposed opening and stretches into the incision, and the first bevel gear is meshed with the three gear rings, so that the surgical tool can be conveniently observed. And the rotating driving piece can conveniently drive the three extrusion pieces to synchronously move downwards to extrude the tilting expansion piece.

Description

Technical Field

[0001] The utility model belongs to the field of incision fixers, and in particular relates to an incision fixer with adjustable incision size. Background Art

[0002] An incision fixator is a necessary medical device for laparotomy. Its function is to expand the surgical field of view of the incision, protect the incision from damage, and reduce incision infection.

[0003] A Chinese patent with publication number CN213758379U discloses a stapler incision retractor and fixer, comprising a base, in which a gear transmission assembly is installed. The upper part of the gear transmission assembly is connected to multiple sets of sliding blocks. The lower part of the base is rotatably connected to multiple expansion claws. The lower ends of the multiple expansion claws form an incision expansion opening. The upper end of each expansion claw is set corresponding to the position of a sliding block. The size of the expansion opening formed by the expansion claws is adjusted by moving the sliding block.

[0004] During use, the stapler incision retractor and fixator disclosed in the application adopts a three-point positioning design principle within a plane to retract and expand the incision. At this time, the incision corresponds to the center opening of the base, so that the center opening of the base can be used to observe the incision and insert surgical tools. The sliding block slides toward the center, and the upper part of the expansion claw rotates at the center opening, which can easily affect the observation of the incision and the insertion of surgical tools. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an incision fixer with adjustable incision size.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A cutout fixer with adjustable cutout size includes a base, an exposed opening vertically provided on the base, the exposed opening penetrating the base, a bevel gear 1 rotatably engaged in the base, the bevel gear 1 being located on the periphery of the exposed opening, a driving member rotatably engaged on the side of the base, the driving member meshing with the bevel gear 1;

[0008] The lower part of the base is rotatably fitted with three tilting expansion pieces, and the base is slidably fitted with an extrusion piece corresponding to the tilting expansion piece. The peripheral thread of the extrusion piece is fitted with a gear ring, and the gear ring is engaged with the side of the inner wall of the bevel gear. The gear ring and the tilting expansion piece are both located on the side of the exposed opening.

[0009] Optionally, the extrusion part includes a screw, and the base is vertically provided with three receiving holes, which pass through the base. The screw slides in the receiving holes, and the receiving holes are located on the side of the exposed opening. The gear ring thread is fitted on the circumference of the screw, and the lower end of the screw is a hemispherical structure.

[0010] Optionally, two sliding grooves are provided on the side of the inner wall of the storage hole, the sliding grooves are located above the gear ring, and a slider is provided on the side of the screw rod to slide in the sliding grooves.

[0011] Optionally, a ring groove 1 is provided on the circumferential side of the inner wall of the storage hole, the ring groove 1 is located on the side of the exposed opening, the ring gear rotatably fits in the ring groove 1, a ring groove 2 is provided in the base, the bevel gear 1 rotatably fits in the ring groove 2, the ring groove 2 is located on the circumferential side of the three ring grooves 1, and the ring groove 1 is connected to the ring groove 2.

[0012] Optionally, the driving member includes a knob located on the side of the base, an extension rod is installed on one end face of the knob, and a bevel gear 2 is provided on the end face of the extension rod away from the knob. Bevel gear 2 is engaged with bevel gear 1. A rotating hole is provided on the side of the base, and the extension rod passes through the rotating hole. A rotating groove connected to the ring groove 2 is provided on one end face of the inner wall of the rotating hole, and bevel gear 2 rotates and fits in the rotating groove.

[0013] Optionally, the tilting expansion member includes a rotating column rotatably engaged with the lower part of the base, and the side of the rotating column is provided with an expansion claw and a pressure plate, and the pressure plate is located directly below the screw.

[0014] Optionally, two sleeve plates corresponding to the rotating column are provided on the lower end surface of the base, the rotating column is located between the two sleeve plates, and both end surfaces of the rotating column are provided with convex columns, and the sleeve plates are sleeved on the circumferential side of the convex columns.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0016] By locating the gear ring and the tilting expansion piece on the side of the exposed opening, the probability of them blocking the exposed opening is reduced, making it convenient to use the exposed opening to observe the incision and to insert surgical tools into the incision through the exposed opening. By meshing the bevel gear 1 with the three gear rings, the rotating driving piece drives the three extrusion pieces to move downward synchronously to extrude the tilting expansion piece, so that the three tilting expansion pieces rotate synchronously.

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] In the picture:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0021] Figure 2This is a schematic cross-sectional view of an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the base according to an embodiment of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] Base 1, exposure opening 101, storage hole 102, slide groove 103, ring groove 104, ring groove 2 105, rotating hole 106, rotating groove 107, sleeve plate 108, screw 2, slider 201, ring gear 3, bevel gear 1 4, knob 5, extension rod 501, bevel gear 2 502, rotating column 6, boss 601, pressure plate 602, extension claw 7.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] See also Figure 1-3 As shown, in this embodiment, a slit holder with adjustable slit size is provided, comprising a base 1, with an exposure opening 101 vertically provided on the base 1, the exposure opening 101 penetrating the base 1, a bevel gear 14 rotatably engaged within the base 1, the bevel gear 14 being an annular structure and located around the exposure opening 101, a driving member rotatably engaged with the side of the base 1, the driving member meshing with the bevel gear 14;

[0028] The lower part of the base 1 is rotatably engaged with three tilting expansion pieces, and the base 1 is slidably engaged with an extrusion piece corresponding to the tilting expansion piece. The circumferential thread of the extrusion piece is engaged with a gear ring 3, and the circumferential side of the inner wall of the gear ring 3 is provided with a thread. The gear ring 3 is engaged with the inner wall side of the bevel gear 4, and the inner wall side of the bevel gear 4 is provided with a plurality of gear teeth. The gear ring 3 and the tilting expansion piece are both located on the side of the exposed opening 101.

[0029] One aspect of the application of this embodiment is: when in use, the rotating driving member drives the bevel gear 4 to rotate, and the rotation of the bevel gear 4 drives the three gear rings 3 to rotate synchronously through the gear teeth on the inner wall, and the rotation of the gear ring 3 drives the extrusion member to slide downward through the thread on the inner wall, and the extrusion member slides down to extrude the tilting expansion member to rotate outward, and the outward rotation of the tilting expansion member is used to expand the incision, and the size of the expanded incision is adjusted according to the rotation angle of the tilting expansion member, and then the internal situation of the incision can be observed through the exposure port 101, and surgical tools can be inserted into the incision through the exposure port 101.

[0030] By locating the gear ring 3 and the tilting expansion piece on the side of the exposure opening 101, the probability of them blocking the exposure opening 101 is reduced, thereby making it convenient to observe the incision through the exposure opening 101 and to insert surgical tools into the incision through the exposure opening 101. The bevel gear 1 4 is engaged with the three gear rings 3, so that the rotating driving piece drives the three extrusion pieces to move downward synchronously to extrude the tilting expansion piece, so that the three tilting expansion pieces rotate synchronously.

[0031] like Figure 2 As shown, the extrusion part of this embodiment includes a screw 2, and the base 1 is vertically provided with three receiving holes 102. The receiving holes 102 pass through the base 1, and the screw 2 slides in the receiving holes 102. The receiving holes 102 are located on the side of the exposed opening 101, and the gear ring 3 is threadedly engaged with the circumference of the screw 2. The screw 2 can be received through the receiving holes 102, and the gear ring 3 is threadedly engaged with the screw 2 through the thread of the inner wall.

[0032] like Figure 2 、 3 As shown, two sliding grooves 103 are provided on the side of the inner wall of the storage hole 102 of this embodiment. The sliding groove 103 is located above the ring gear 3, and a slider 201 is provided on the side of the screw 2 to slide in the sliding groove 103. The slider 201 slides in the sliding groove 103 to limit the displacement direction and distance of the screw 2, thereby reducing the probability of the screw 2 rotating due to the rotation of the ring gear 3 and reducing the probability of the screw 2 detaching from the ring gear 3 and the storage hole 102.

[0033] like Figure 1-3 As shown, the lower end of the screw 2 of this embodiment is a hemispherical structure. The hemispherical structure reduces the friction between the screw 2 and the tilting expansion piece during the extrusion process, thereby improving the smoothness of the screw 2 when extruding the tilting expansion piece and rotating.

[0034] like Figure 2 As shown, an annular groove 104 is provided on the circumferential side of the inner wall of the storage hole 102 of this embodiment, and the annular groove 104 is located on the side of the exposed opening 101. The ring gear 3 is rotatably fitted in the annular groove 104. An annular groove 2 105 is provided in the base 1, and the bevel gear 1 4 is rotatably fitted in the annular groove 2 105. The annular groove 2 105 is located on the circumferential side of the three annular grooves 104. The annular groove 104 is communicated with the annular groove 2 105. The stability of the ring gear 3 during rotation is improved by the annular groove 104, and the stability of the bevel gear 1 4 during rotation is improved by the annular groove 2 105.

[0035] like Figure 2As shown, the driving member of this embodiment includes a knob 5 located on the side of the base 1, and an extension rod 501 is installed on one end face of the knob 5. A bevel gear 2 502 is provided on the end face of the extension rod 501 away from the knob 5. The bevel gear 2 502 is meshed with the bevel gear 1 4. A rotating hole 106 is provided on the side of the base 1, and the extension rod 501 passes through the rotating hole 106. An end face of the inner wall of the rotating hole 106 is provided with a rotating groove 107 connected to the annular groove 2 105. The bevel gear 2 502 rotates and fits in the rotating groove 107. When in use, rotating the knob 5 drives the extension rod 501 and the bevel gear 2 502 to rotate, and the bevel gear 2 502 rotates to drive the bevel gear 1 4 to rotate. The rotating groove 107 cooperates with the extension rod 501 to reduce the probability of the bevel gear 2 502 disengaging from the rotating groove 107.

[0036] like Figure 1-3 As shown, the tilting expansion part of this embodiment includes a rotating column 6 that is rotatably engaged with the lower part of the base 1. The side of the rotating column 6 is provided with an expansion claw 7 and a pressure plate 602. The pressure plate 602 is located directly below the screw 2. The screw 2 moves downward to squeeze the pressure plate 602, so that the pressure plate 602 drives the expansion claw 7 to rotate through the rotating column 6, and the rotation of the expansion claw 7 is used to expand the incision.

[0037] like Figure 1 、 3 As shown, the lower end surface of the base 1 of this embodiment is provided with two sleeves 108 corresponding to the rotating column 6, and the rotating column 6 is located between the two sleeves 108. The two end surfaces of the rotating column 6 are provided with a boss 601, and the sleeve 108 is sleeved on the circumference of the boss 601. The boss 601 and the sleeve 108 cooperate with each other to improve the stability of the rotating column 6 during rotation. The rotating column 6, the pressure plate 602 and the expansion claw 7 rotate around the center line of the boss 601.

[0038] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. An incision fixator with adjustable incision size, characterized in that: include: A base (1), the base (1) is vertically provided with an exposed opening (101), a bevel gear (4) is rotatably engaged inside the base (1), a driving member is rotatably engaged on the side of the base (1), and the driving member is meshed with the bevel gear (4); The lower part of the base (1) is rotatably engaged with three tilting expansion pieces, and the base (1) is slidably engaged with an extrusion piece corresponding to the tilting expansion piece. The circumferential thread of the extrusion piece is engaged with a gear ring (3), and the gear ring (3) is meshed with the inner wall side of the bevel gear (4). The gear ring (3) and the tilting expansion piece are both located on the side of the exposed opening (101).

2. The incision fixator with adjustable incision size according to claim 1, characterized in that: The extrusion piece includes a screw (2), and the base (1) is vertically provided with three receiving holes (102). The screw (2) is slidably fitted in the receiving holes (102), and the gear ring (3) is threadedly fitted on the circumference of the screw (2).

3. The incision fixator with adjustable incision size according to claim 2, characterized in that: Two sliding grooves (103) are provided on the side of the inner wall of the receiving hole (102), and a sliding block (201) is provided on the side of the screw rod (2) and is slidably fitted in the sliding grooves (103).

4. The incision fixator with adjustable incision size according to claim 3, characterized in that: The lower end of the screw (2) is a hemispherical structure.

5. The incision fixator with adjustable incision size according to claim 3, characterized in that: A first annular groove (104) is provided on the inner wall of the receiving hole (102), and the gear ring (3) is rotatably fitted in the first annular groove (104). A second annular groove (105) is provided in the base (1), and the first bevel gear (4) is rotatably fitted in the second annular groove (105).

6. The incision fixator with adjustable incision size according to claim 5, characterized in that: The driving member comprises a knob (5) located on the side of the base (1); an extension rod (501) is installed on one end face of the knob (5); a second bevel gear (502) is provided on one end face of the extension rod (501) away from the knob (5); and the second bevel gear (502) is meshed with the first bevel gear (4).

7. The incision fixator with adjustable incision size according to claim 1, characterized in that: The tilting expansion component comprises a rotating column (6) rotatably fitted on the lower part of the base (1); an expansion claw (7) and a pressure plate (602) are provided on the side of the rotating column (6).

8. The incision fixator with adjustable incision size according to claim 7, characterized in that: The lower end surface of the base (1) is provided with two sleeve plates (108) corresponding to the rotating column (6), and both end surfaces of the rotating column (6) are provided with convex columns (601), and the sleeve plates (108) are sleeved on the peripheral sides of the convex columns (601).

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