CN219109406U

CN219109406U - Multi-flap type expansion device

Info

Publication number: CN219109406U
Application number: CN202223018544.XU
Authority: CN
Inventors: 莫易凡; 黄杰森; 马盼盼; 林聪杰
Original assignee: Surgaid Medical (xiamen) Co ltd
Current assignee: Surgaid Medical (xiamen) Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-06-02
Anticipated expiration: 2032-11-14

Abstract

The utility model relates to a multi-petal type expansion device. The expansion blade comprises a plurality of expansion blades, wherein the expansion blades are spliced to form a tubular structure, and any two adjacent expansion blades can be separated from each other; the guide piece is arranged on the side wall of the rear part of the expansion blade, and the expansion blade is driven to radially move according to the tubular structure by moving the guide piece; the side wall of the tubular carrier is provided with a plurality of limiting holes for the guide piece to pass through in a surrounding manner; the driving mechanism is arranged on the tubular carrier and is in linkage fit with the guide piece; wherein, through controlling actuating mechanism, drive the guide and go up and down to the expansion degree of control expansion blade. The beneficial effects of the utility model are as follows: 1. the utility model can slowly and uniformly realize anus expansion; the expansion force is balanced and controllable, so that the problem that the patients are painful due to uneven or large expansion force in the traditional mode is avoided; 2. the utility model also realizes visual design, forms a passable channel, and is convenient for a doctor holding a knife to observe and for the instrument to enter.

Description

Multi-flap type expansion device

Technical Field

The utility model relates to the field of medical instruments, in particular to a multi-petal expansion device.

Background

Surgical scarring and pain are considered as the necessary products of surgery in the course of traditional surgical development. Natural cavity specimen taking surgery (NOSES) is used as a new surgical operation of minimally invasive surgery, and foreign objects are raised in numerous minimally invasive surgical technologies, so that extensive attention and heat is gradually given to students at home and abroad. The NOSES skillfully combines the NOTES incision-free concept with the laparoscopic technique operation feasibility, not only shows perfect minimally invasive effect, but also has good safety and operability.

Surgical incision and pain have been thought in the past to be the necessary process and experience of surgery, with incision size being directly related to the success or failure of the procedure. Although intra-abdominal procedures highlight the surgeon's wind, a series of effects of the surgical incision on the patient cannot be ignored. Compared with the conventional endoscopic surgery, the most intuitive advantage of NOSES is that the specimen taking incision of the abdominal wall is avoided. The technology is one of the technical supports of the abdomen unassisted incision.

At present, the conventional operation is that an operator finishes the operation by fingers, firstly, two index fingers of the anus are added, then, the two index fingers are added, the anus is enlarged by the fingers of the doctor to the extent of 4 fingers of the anus, and the anus is enlarged by the fingers of the doctor, and the doctor is assisted to enlarge the anus by the fingers of the patient by self or under anesthesia.

The anus is dilated by finger operation of an operator, and the following defects mainly exist: (1) the supporting force provided by the expansion of the index finger and the middle finger is uneven, so that the stable and effective anus expansion effect can not be achieved, the phenomena of local anal canal mucosa and skin tearing are avoided, the pain of a patient is high, and the patient is not easy to accept; (2) the finger of the surgeon is used for expanding, the anus expanding degree is not easy to grasp, and the specification and safety of anus expanding cannot be ensured. (3) It is expensive (mainly for the anus expansion assisted by doctors under anesthesia).

In a word, the existing abdomen does not have the defect of easy damage, insufficient and under-specification of anus dilatation in the operation of taking specimens through rectum and anus without auxiliary incision, and powerful guarantee can not be provided for popularization of the technology.

Disclosure of Invention

The utility model aims to provide a multi-valve type expansion device which is simple to operate and can reduce pain of a patient.

The object of the utility model is achieved in that a multi-lobed stent comprises

The expansion blades 1 are provided with a plurality of expansion blades 1, the expansion blades 1 are spliced to form a tubular structure, and any two adjacent expansion blades 1 can be mutually separated;

the guide piece 11 is arranged on the side wall of the rear part of the expansion blade 1, and the expansion blade 1 is driven to radially move according to the tubular structure by moving the guide piece 11;

a tubular carrier 2, the side wall of which is provided with a plurality of limiting holes 21 for the guide 11 to pass through; and

the driving mechanism is arranged on the tubular carrier 2 and is in linkage fit with the guide piece 11;

wherein, through controlling the actuating mechanism, drive the guide 11 to rise and fall to control the expansion degree of expansion blade 1.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model can slowly and uniformly realize anus expansion; the expansion force is balanced and controllable, so that the problem that the patients are painful due to uneven or large expansion force in the traditional mode is avoided;

2. the utility model also realizes visual design, forms a passable channel, and is convenient for a doctor holding a knife to observe and for the instrument to enter.

3. The rotation mode expands, so that the operation is more labor-saving;

4. the reference value and the pattern indicating the direction of expansion and closing can facilitate the doctor to judge the degree of expansion.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the guide of the present utility model mounted to a tubular carrier;

FIG. 3 is a cross-sectional view of the guide mounted to a tubular carrier in accordance with the present utility model;

FIG. 4 is a diagram showing the relationship between bevel gears and guides in accordance with the present utility model;

FIG. 5 is a cross-sectional view of a bevel gear and a guide of the present utility model;

FIG. 6 is a cross-sectional view of the overall structure of the present utility model;

FIG. 7 is a state diagram of the utility model with the expansion blade unexpanded;

FIG. 8 is a state diagram of the expansion blade of the present utility model;

fig. 9 is a schematic view of the rear end of the tubular carrier of the present utility model.

Description of the reference numerals: 1 expanding blade, 11 guide piece, 2 tubular carrier, 21 spacing hole, 22 spacing groove, 23 bolt hole, 24 spacing protruding edge, 3 bevel gear, 31 umbrella part, 32 axial part, 33 ring channel, 4 ring type awl tooth, 41 stopper, 5 spacing nut, 6 locating pin.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

in the description of the present utility model, it should be understood that the directions or positional relationships indicated by "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1-9: a multi-lobed stent comprising

The expansion blade 1 is generally provided with 3-8 blades, and the expansion blade 1 is driven to radially move according to the tubular structure by controlling the movement of the guide piece 11, so that the expansion or contraction of the expansion blade is realized.

The guide 11 here is also generally connected perpendicularly to the outer side of the expansion blade 1.

Wherein the guide piece 11 is a screw rod with a cross section presenting a major arc shape, and the shape of the limiting hole 21 is matched with the cross section shape of the guide piece 11;

the driving mechanism comprises

The middle part of the bevel gear 3 is provided with an axially extending screw hole which is in threaded fit with the guide piece 11; and

the annular bevel gear 4 is axially and rotatably arranged on the periphery of the tubular carrier 2, and the front side of the annular bevel gear is meshed with the bevel gear 3;

wherein the bevel gear 3 is rotatably mounted on the outer side wall of the tubular carrier 2.

The arc-shaped screw rod and the limiting hole 21 with the same shape can ensure that the guide piece 11 cannot rotate along with the bevel gear 3 in the rotating process, and the corresponding expansion blade 1 cannot deflect (swing left and right).

Because the annular bevel gear 4 is meshed with the bevel gear 3, the annular bevel gear 4 can drive all the bevel gears 3 to synchronously rotate at the same time, and then drive all the expansion blades 1 to synchronously expand or contract.

The bevel gear 3 is divided into an umbrella part 31 and a shaft part 32, wherein the umbrella part is provided with a tooth structure in a surrounding mode, and an annular groove 33 is formed in the periphery of the shaft part 32 in a surrounding mode;

the side wall of the tubular carrier 2 is provided with a limit groove 22 in transition fit with the shaft part 32, and the side wall of the limit groove 22 is provided with a bolt hole 23 extending out of the front end of the tubular carrier 2;

the shaft portion 32 is mounted in the limit groove 22, and the positioning pin 6 is inserted into the annular groove 33 through the pin hole 23.

By the design, the bevel gear 3 can be prevented from moving along with the axial direction of the bevel gear 3 in the rotating process, and the guide piece 11 can be driven to move along the axial direction by the rotation of the bevel gear 3, so that the expansion blade 1 is driven to expand or contract synchronously.

The outer side wall of the tubular carrier 2 is annularly provided with a limiting convex edge 24; a limiting block 41 is arranged in the ring-shaped bevel gear 4 in a ring manner; the limiting block 41 is blocked by the limiting convex edge 24, and the annular bevel gear 4 is only meshed with the bevel gear 3 and cannot move forwards;

the periphery of the tubular carrier 2 and the rear part of the annular bevel gear 4 are also provided with a limit nut 5 which props against the annular bevel gear 4.

The annular bevel gear 4 is limited by the limiting convex edge 24, the limiting block 41 and the limiting nut 5, so that the annular bevel gear 4 can be kept in a meshed state with the bevel gear 3 and cannot move back and forth in the rotation process, and the limiting block 41 can be a plurality of limiting blocks distributed on the inner wall of the annular bevel gear 4 in an annular array or can be an annular convex edge.

The front section surface of the expansion blade 1 is a smooth surface which is subjected to rounding treatment.

The rear end ring of the outer surface of the tubular carrier 2 or the limit nut 5 is provided with a reference value; the outer surface of the ring-shaped bevel gear 4 is provided with a pattern indicating the direction of expansion and closure.

The working section of the utility model is of a multi-petal structure, and is driven by adopting a gear driving mode, so that stable and uniform supporting force can be provided; the degree of expansion may be achieved by providing a density of teeth in the gear. In addition, the front section surface of the expansion blade is rounded, the surface is smooth, the diameter is smaller when the expansion blade enters the body, the anus is gradually expanded by rotating the ring bevel gear, the expansion degree is easy to adjust, the stimulation to the anus can be reduced, and the risk of anorectal hemorrhage is reduced.

The application mode of the utility model is as follows: holding the tubular carrier 2, firstly rotating the limit nut 6 to limit the axial position of the ring bevel gear rotating assembly, and then plugging the expansion blade into the anus, wherein the state of the utility model is as shown in figure 7, and the bevel gear 3 is driven to rotate by slowly rotating the ring bevel gear 4, so that the expansion blade is driven to expand. The limit nut 5 has a numerical value, see fig. 9, and the doctor can adjust the annular bevel gear by referring to the numerical value, so as to judge the expansion degree. When the ring type bevel gear 4 rotating component is withdrawn, the blades 1 to be expanded are completely contracted and then are pulled out of the anus, so that the operation is simple and convenient, and the operation of doctors is convenient.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims

1. The multi-flap type expanding device is characterized by comprising

The expansion blades (1) are provided with a plurality of expansion blades (1), the expansion blades (1) are spliced to form a tubular structure, and any two adjacent expansion blades (1) can be separated from each other;

the guide piece (11) is arranged on the side wall of the rear part of the expansion blade (1), and the expansion blade (1) is driven to radially move according to the tubular structure by moving the guide piece (11);

a tubular carrier (2), the side wall of which is provided with a plurality of limiting holes (21) for the guide piece (11) to pass through; and

the driving mechanism is arranged on the tubular carrier (2) and is in linkage fit with the guide piece (11);

wherein, through controlling actuating mechanism, drive guide (11) goes up and down to the degree of expansion of control expansion blade (1).

2. The multi-lobed stent of claim 1, wherein: the guide piece (11) is a screw rod with a cross section presenting a major arc shape, and the shape of the limiting hole (21) is matched with the cross section shape of the guide piece (11);

the driving mechanism comprises

The bevel gear (3) is provided with a screw hole extending axially in the middle, and the screw hole is in threaded fit with the guide piece (11); and

the annular bevel gear (4) is axially and rotatably arranged on the periphery of the tubular carrier (2), and the front side of the annular bevel gear is meshed with the bevel gear (3);

wherein the bevel gear (3) is rotatably arranged on the outer side wall of the tubular carrier (2).

3. The multi-lobed stent of claim 2 wherein: the bevel gear (3) is divided into an umbrella part (31) with a tooth structure and a shaft part (32), and an annular groove (33) is formed in the periphery of the shaft part (32) in a surrounding manner;

a limit groove (22) in transition fit with the shaft part (32) is formed in the side wall of the tubular carrier (2), and a bolt hole (23) extending out of the front end of the tubular carrier (2) is formed in the side wall of the limit groove (22);

the shaft part (32) is arranged in the limit groove (22), and the positioning pin (6) is inserted into the annular groove (33) through the pin hole (23).

4. The multi-lobed stent of claim 2 wherein: the outer side wall of the tubular carrier (2) is annularly provided with a limiting convex edge (24); a limiting block (41) is arranged in the ring-shaped bevel gear (4) in a ring manner; the limiting block (41) is blocked by the limiting convex edge (24), and the annular bevel gear (4) is only meshed with the bevel gear (3) and cannot move forwards;

the periphery of the tubular carrier (2) and the rear part of the annular bevel gear (4) are also provided with a limit nut (5) propped against the annular bevel gear (4).

5. The multi-lobed stent of claim 1, wherein: the front section surface of the expansion blade (1) is a smooth surface which is subjected to rounding treatment.

6. The multi-lobed stent of claim 1, wherein: the rear end ring of the surface of the tubular carrier (2) is provided with a reference value; the outer surface of the annular bevel gear (4) is provided with a pattern indicating the expanding and closing directions.