CN220608353U

CN220608353U - Width-adjustable eyelid retractor

Info

Publication number: CN220608353U
Application number: CN202321626886.1U
Authority: CN
Inventors: 史俊虎; 刘杉; 白萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2024-03-19
Anticipated expiration: 2033-06-26

Abstract

The utility model belongs to ophthalmic surgical instruments, and particularly relates to an eyelid retractor with adjustable width. The device comprises a first holding part and a second holding part which are coaxially arranged in parallel, a first draw hook and a second draw hook which are arranged at the top ends of the first holding part and the second holding part, wherein the tail parts of the first holding part and the second holding part are connected through an elastic hinge, and an opening is formed between the inner side of the elastic hinge and the tail ends of the first holding part and the second holding part; at least three grooves with opposite cambered surfaces are formed in the middle adjacent surfaces of the first holding part and the second holding part at intervals along the axial direction, positioning holes are formed by the oppositely arranged cambered grooves, the middle part of the positioning pin is of a columnar structure capable of being elastically clamped and combined with the positioning holes, rabbets capable of being axially positioned with the positioning holes are arranged at the upper end and the lower end of the positioning pin, the distance between the outer edges of the first draw hook and the second draw hook corresponding to the positioning pin when the positioning pin is positioned in the positioning holes is d, and d is more than or equal to 8mm and less than or equal to 25mm. The utility model effectively solves the problems of the prior art that the width of the draw hook is not adjustable, the operation is inconvenient, and the like, and has the advantages of compact structure, adjustable draw hook width, convenient operation, and the like.

Description

Width-adjustable eyelid retractor

Technical Field

The utility model belongs to ophthalmic surgical instruments, and particularly relates to an eyelid retractor with adjustable width.

Background

The upper eyelid ptosis is a common disease of ophthalmology and plastic department, and mainly appears as that the upper eyelid lifts up to be weak, and covers the eyeball completely or partially; not only affects the appearance of the patient, but also adversely affects the vision function. The treatment of upper eyelid prolapse is generally performed by surgery in a number of ways, and the most commonly used frontal muscle flap suspension surgery is generally divided into the following surgical procedures: designing an upper eyelid incision, separating tissues, exposing and manufacturing a frontal muscle flap, suturing and fixing the frontal muscle flap to an upper eyelid board, and suturing an incision double eyelid, wherein the technical requirements in the operation process are as follows: an incision is made on the upper eyelid, tissues are separated from the subcutaneous layer upwards until the upper forehead muscle is reached, and a muscle flap is made by the frontalis and is sutured and fixed on the upper eyelid meibomian to realize the lifting of the upper eyelid. For aesthetic requirements after surgery, the surgery has only an arc-shaped skin incision of the upper eyelid, and is separated upwards by the diving between tissue layers, which usually requires an operator assistant to use an eyelid retractor to hook up the upper edge tissue of the incision, and the exposure needs to be completed by the separated tissue fitter. The separation of forehead muscle is required to be at least 1.0cm above eyebrow, and the width of the muscle flap is recommended to be not less than 2.0cm, so as to realize comprehensive lifting of the middle and inner and outer sides of eyelid. Because the forehead muscles have rich blood circulation, and the operator can separate tissues under direct vision, the probability of local hematoma during and after the operation can be greatly reduced, and simultaneously, the damage to the nerves and vascular tissues near the upper edge of the eye orbit can be avoided. Therefore, when the eyelid hook is used, the upper edge tissue of the incision is required to be hooked and pulled to the upper side, and the deep muscle tissue of the forehead is required to be exposed, so that an operator can directly see at least 1.0cm deep tissue on the eyebrow, and the two sides of the deep tissue exceed the width of at least 2.0 cm.

The eyelid retractor is an important appliance used in the upper eyelid sagging treatment operation, and clear requirements are made on the dimension specification, the surface smoothness and flatness of a product, the manufacturing material characteristics and the like of the eyelid retractor in the standard eyelid retractor (YY/T0180-94) of the pharmaceutical industry of the people's republic of China. According to the standard requirements, the width of the existing commercially available eyelid hook is 8-1.4mm.

The width of the front end of the eyelid retractor sold in the market at present is not adjustable; therefore, an assistant in operation needs to continuously adjust the pulling position by using the eyelid retractor so as to meet the requirement of exposing tissues at different positions of an operation field, and is convenient for an operator to realize operation at different retractor positions, so that the following problems are caused: firstly, an assistant in operation needs to adjust the eyelid retractor position to cause that the operator and the assistant have more arm interlacing operations or moving positions, and excessive arm interlacing operations and position moving increase risks of pollution of an operation area, occupational exposure of medical staff and the like; secondly, the existing drag hook can not be fixed, and needs to be held by an assistant in operation all the time, so that great inconvenience is brought to operation.

Applicant has not found literature reports in the existing domestic patent databases that are similar to the present application.

Disclosure of Invention

The utility model aims to provide the eyelid retractor with adjustable width, which not only can conveniently realize the adjustment of different widths of the retractor by optimizing the structures of the retractor and the holding part, but also is convenient for realizing the positioning in the eyelid retractor operation, thereby effectively reducing the inconvenience of the staggered operation of an operator and an assistant arm and simplifying the operation of the assistant in the operation.

The utility model has the following overall technical concept:

the eyelid retractor with adjustable width comprises a holding part, wherein the smooth-surface retractor part is positioned at the top end of the holding part and can be matched with the upper eyelid of a patient; the holding part comprises a first holding part and a second holding part which are coaxially arranged in parallel, the drag hook part comprises a first drag hook which is respectively arranged at the top end of the first holding part, and a second drag hook which is arranged at the top end of the second holding part; the tail parts of the first holding part and the second holding part are connected through an elastic hinge, and the inner side of the elastic hinge forms an opening with the tail ends of the first holding part and the second holding part; the middle part abutting surface of first portion of holding and second portion of holding sets up the recess that at least three cambered surface is relative along axial interval, and the arc recess that sets up relatively forms along axial interval distribution's locating hole, and the locating pin middle part is the columnar structure that can form elasticity card fit with the locating hole, and both ends are equipped with the tang that can form axial positioning with the locating hole about the locating pin, and the locating pin is located the outward flange interval of corresponding first drag hook and second drag hook when the locating hole is d, and 8mm is less than or equal to d is less than or equal to 25mm.

The applicant needs to say that the length of the eyelid cleavage of the current national people is generally 24-30 mm, the width of the arc-shaped skin incision in the upper eyelid sagging operation is generally 25-30 mm, and the skin incision can be properly prolonged under special conditions, generally not more than 35mm, so as to avoid forming obvious skin scars. In daily operation, when the applicant practice body can use a pull hook with the width of 20mm to hook up the upper lip of the incision, the surgical field with the incision width of 30mm can be fully exposed, and the position does not need to be moved back and forth. When the width of the hook is adjusted to 25mm, the full-field exposure of the operation field can be met under special conditions when the skin incision is prolonged.

The positioning holes sequentially correspond to the adjustment widths between the first drag hook and the second drag hook according to the set quantity, and the positioning holes are of a round or polygonal structure which is convenient to push, pull, shift and position. The hole with the largest aperture in the positioning hole is matched with the surface of the columnar structure in the middle of the positioning pin, and the adjusting width corresponding to the positioning hole can be carved or printed on the holding part during manufacturing, so that the positioning pin can be used by operators.

The specific technical concept of the utility model is as follows:

in order to increase the structural strength of the distance-adjusting eccentric hole in the holding part and the rear elastic hinge and avoid the damage of the distance-adjusting eccentric hole and the rear elastic hinge caused by the stress due to the weak structure, the preferred technical implementation means is that the first holding part and the second holding part are of reducing structures which gradually bulge from the middle part to the tail part.

The elastic hinge has the advantages of small volume, no gap, no friction, high sensitivity, stable motion and the like, and is increasingly applied to various ultra-precise sports equipment, such as micro-nano driving platforms, high-precision calibration and displacement amplifiers of piezoelectric drivers. The overall performance of the elastic mechanism depends to some extent on the inherent characteristics of the elastic hinge. In order to increase the resetting force of the elastic hinge and meet the structural design requirement, the preferred technical implementation means is that the tail parts of the first holding part and the second holding part are of sheet-shaped structures. Therefore, the elasticity of the elastic hinge can be increased by increasing the distance between the two ends of the elastic hinge under the same structural strength, and the structural resetting requirement is further met.

In order to meet the requirement of different spacing arrangement of the first draw hook and the second draw hook, the preferable technical implementation means is that the inner diameters of the positioning holes are equal or gradually reduced from front to back. When the positioning hole is an equal-diameter hole, the inner diameter of the positioning hole is slightly smaller than the outer diameter of the columnar structure in the middle of the positioning pin in order to be convenient for elastic clamping and assembling with the columnar structure in the middle of the positioning pin; further, each positioning hole Kong Yandi has a holding portion and a second holding portion axially and equally spaced apart.

In order to meet the requirements of resetting and clamping after the width of the first holding part and the second holding part is adjusted, the preferable technical implementation means is that the notch shape of the elastic hinge is one or the combination of the arc shape, the elliptical arc shape, the parabolic shape and the hyperbolic shape.

In order to facilitate the operation of the apparatus by the operator, the preferred technical implementation means is that at least one end surface of the positioning pin is provided with anti-skid patterns.

In the description of the present utility model, the terms "top," "tail," "middle," "axial," "trailing," "one side," "one end," "edge," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model, and do not indicate or imply that the device or element referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The technical progress of the utility model is that:

1. the elastic hinge is adopted to connect the holding part, so that the structural design of the auxiliary positioning hole and the positioning pin is adopted, firstly, the distance between the first draw hook and the second draw hook is effectively adjustable, the stepless adjustment of the width cannot be realized, the purpose of multiple width adjustment can be achieved, and the use requirement of eyelid draw hooks with different width specifications is met; secondly, can realize reliable and stable location after the interval adjustment between first drag hook and the second drag hook, convenient to use person operates.

2. The columnar structure in the middle of the locating pin is elastically pressed and matched with the side wall of the locating hole, and the upper end and the lower end of the locating pin are matched with the edge of the locating hole by adopting a spigot, so that the push-pull operation and the adjustment of the width of the draw hook are conveniently realized; and secondly, the matching reliability of the positioning pin and the positioning hole is good and the positioning pin and the positioning hole are not easy to deviate from.

3. The elastic hinge is structurally designed, so that the elastic hinge and the tail end of the holding part are conveniently integrally formed; secondly, the product structure is effectively simplified; thirdly, the method has better sensitivity and good resetting effect; fourthly, the surgical towel, towel forceps and other instruments are used for fixing through the elastic hinge and the opening formed by the holding part in the operation, so that the holding operation in the operation of the operator is simplified.

Drawings

Fig. 1 is an outline view of the present utility model with the left and right grip portions in a fitted state.

Fig. 2 is an external view of the present utility model with the left and right grip parts separated.

Fig. 3 is A-A view of fig. 1.

Fig. 4 is a perspective view of the present utility model.

Fig. 5 is a schematic view of the structure of the positioning pin.

Reference numerals in the drawings are as follows:

1. a first drag hook; 2. a first grip portion; 3. a distance-adjusting eccentric hole; 4. a positioning pin; 5. an elastic hinge; 6. a second grip portion; 7. and a second drag hook.

Detailed Description

The present utility model will be further described with reference to the following examples, but should not be construed as limiting the utility model, and the scope of the utility model is defined by the appended claims, and any equivalents thereof may be substituted according to the description without departing from the scope of the utility model.

The whole conception of the embodiment is as shown in the figure, the width-adjustable eyelid retractor comprises a holding part, and a retractor part with a smooth surface is positioned at the top end of the holding part and can be matched with the upper eyelid of a patient; the holding part comprises a first holding part 2 and a second holding part 6 which are coaxially arranged in parallel, the drag hook part comprises a first drag hook 1 which is respectively arranged at the top end of the first holding part 2, and a second drag hook 7 which is arranged at the top end of the second holding part 6; the tail parts of the first holding part 2 and the second holding part 6 are connected through an elastic hinge 5, and the inner side of the elastic hinge 5 forms an opening with the tail ends of the first holding part 2 and the second holding part 6; five grooves with opposite cambered surfaces are formed in the adjacent surfaces of the middle parts of the first holding part 2 and the second holding part 6 along the axial direction at intervals, positioning holes 3 are formed in the opposite arc grooves along the axial direction at intervals, the middle parts of the positioning pins 4 are of columnar structures capable of forming elastic clamping fit with the positioning holes 3, rabbets capable of forming axial positioning with the positioning holes 3 are formed in the upper end and the lower end of the positioning pins 4, the outer edge distance between the first draw hook 1 and the second draw hook 7 corresponding to the positioning pins 4 when the positioning pins 4 are positioned in the positioning holes 3 is d, and d is more than or equal to 8mm and less than or equal to 25mm.

The first holding part 2 and the second holding part 6 have a reducing structure which gradually swells from the middle part to the tail part.

The tail parts of the first holding part 2 and the second holding part 6 are in a sheet-shaped structure.

The aperture of each positioning hole 3 adopts a reducing hole which gradually reduces from front to back.

The notch shape of the elastic hinge 5 is selected from circular arc shapes.

At least one end surface of the positioning pin 4 is provided with anti-skid patterns.

The working principle of this embodiment is as follows:

the use effect of this embodiment under the non-use condition is as shown in fig. 1, 3, and the adjacent face of first portion 2, second portion 6 is in the laminating state, and push-and-pull locating pin 4 to corresponding locating hole as required during the use, and specific effect is as shown in fig. 2, 4, and the open angle of adjustment first portion 2 and second portion 6 is held to the second, and then adjusts the interval of first drag hook 1 and second drag hook 5 to suitable position to the operation field exposes when fully realizing the operation in the operation, has avoided traditional drag hook to be too narrow needs assistant or the loaded down with trivial details of operation that the inside and outside repeatedly moves of operator. The part of the surgical towel covered on the head of the patient is plugged into the notch of the elastic hinge 5 and the openings formed at the tail ends of the first holding part 2 and the second holding part 6, and the eyelid retractor and the surgical towel on the head of the patient can be fixed by means of the towel distribution forceps, so that the inconvenience of staggered operation of the operator and the arm of the assistant caused by manual pulling of the eyelid retractor is avoided, and meanwhile, the eyelid retractor is not held by the assistant all the time in the operation.

Claims

1. The eyelid retractor with adjustable width comprises a holding part, wherein the smooth-surface retractor part is positioned at the top end of the holding part and can be matched with the upper eyelid of a patient; the novel hook is characterized in that the holding part comprises a first holding part (2) and a second holding part (6) which are coaxially arranged in parallel, the hook part comprises a first hook (1) respectively arranged at the top ends of the first holding part (2), and a second hook (7) arranged at the top ends of the second holding part (6); the tail parts of the first holding part (2) and the second holding part (6) are connected through an elastic hinge (5), and openings are formed between the inner side of the elastic hinge (5) and the tail ends of the first holding part (2) and the second holding part (6); at least three grooves with opposite cambered surfaces are formed in the middle adjacent surfaces of the first holding part (2) and the second holding part (6) along the axial interval, positioning holes (3) are formed in the opposite arc grooves along the axial interval, the middle of the positioning pin (4) is of a columnar structure capable of being assembled with the positioning holes (3) through elastic clamping, rabbets capable of being axially positioned with the positioning holes (3) are formed in the upper end and the lower end of the positioning pin (4), and the distance between the outer edges of the first draw hook (1) and the second draw hook (7) corresponding to the positioning pin (4) when the positioning pin (4) is located in the positioning holes (3) is d, and d is not more than 8mm and not more than 25mm.

2. The eyelid retractor with adjustable width according to claim 1, wherein the first holding part (2) and the second holding part (6) have a gradually bulging reducing structure from the middle part to the tail part.

3. The eyelid retractor with adjustable width according to claim 1, characterized in that the tail parts of the first holding part (2) and the second holding part (6) are in a sheet-like structure.

4. The eyelid retractor with adjustable width according to claim 1, wherein the inner diameter of each positioning hole (3) is equal or gradually reduced from front to back.

5. The adjustable width eyelid retractor according to claim 1, wherein the notch shape of the elastic hinge (5) is selected from one or a combination of circular arc shape, elliptical arc shape, parabolic shape, hyperbolic shape.

6. The width-adjustable eyelid retractor according to claim 1, wherein at least one end surface of the positioning pin (4) is provided with anti-slip threads.