Forming die for folding and jacking balloon

Abstract

The utility model provides a forming die of a folding jacking balloon, which comprises a lower die and an upper die, the lower die is provided with a lower forming cavity, the upper die is provided with an upper forming cavity, and when the lower die and the upper die are closed, the lower forming cavity and the upper forming cavity are mutually spliced to form a forming cavity matched with the outer shape of the folding jacking balloon. A forming core matched with the interior of the folding jacking balloon in shape is arranged in the forming cavity, a supporting piece is arranged on the forming core, the forming core is supported in the forming cavity, a balloon forming gap is reserved between the forming core and the forming cavity, and the supporting piece is arranged at the bottom end of the spherical crown cambered surface, corresponding to a spherical crown-shaped balloon body of the folding jacking balloon, of the forming core. A demolding opening formed by the folding and jacking balloon obtained through forming of the mold is located in the bottom end of the spherical crown arc face of the spherical crown-shaped balloon body and not located in the top end or the spherical crown bottom face of the spherical crown-shaped balloon body, and in other words, the demolding opening is not located in the jacking area or the optical area of the folding and jacking balloon. In this way, sealing marks left after the demolding opening is sealed do not affect use of the folding and jacking balloon.

Description

TECHNICAL FIELD

[0001] The utility model relates to ophthalmic medical instrument technical field, especially a kind of forming die of folding top pressure balloon. BACKGROUND

[0002] Retinal detachment is a relatively common ophthalmic disease. To treat retinal detachment, the traditional method is to use scleral buckling surgery to hoop and externally press the eyeball, but the traditional scleral buckling surgery has problems such as large surgical incision and wound infection.

[0003] A kind of implanting folding top pressure balloon to treat retinal detachment is known, which includes a balloon body and a drainage component. The balloon body is hollow inside, and the drainage component communicates with the inside of the balloon body. During surgery, the balloon body is first folded into a strip shape and implanted into the eye, and then a filling medium such as physiological saline, air, silicone oil or gel is injected into the inside of the balloon body through the drainage component, causing the balloon body to expand and press the retina of the eyeball for treatment.

[0004] The folding top pressure balloon is generally integrally formed using a mold. The mold has a forming chamber that is shaped to match the folding top pressure balloon. Since the balloon body of the folding top pressure balloon is hollow inside and the drainage component communicates with the inside of the balloon body, a forming core shaped to match the inside of the balloon body and the inside of the drainage component is provided in the forming chamber. The forming core and the forming chamber have a balloon forming gap therebetween. During the forming process, liquid glue is injected into the gap between the forming core and the forming chamber, and then the liquid glue is heated and vulcanized to form the folding top pressure balloon, which wraps around the forming core.

[0005] A support is provided on the forming core to support the forming core in the forming chamber, ensuring that the forming core and the forming chamber have a balloon forming gap therebetween. Due to the presence of the support, the folding top pressure balloon formed will have a demolding opening at the position of the support, and the folding top pressure balloon can be separated from the forming core through the demolding opening. After the folding top pressure balloon is separated from the forming core, the demolding opening on the folding top pressure balloon needs to be filled and sealed to ensure that the balloon body can expand and press the retina of the eyeball for treatment after the filling medium is injected.

[0006] The balloon body of the folded top pressing balloon is generally in the shape of a spherical cap, the top end of the spherical cap arc surface is a top pressing area, the bottom surface of the spherical cap is an optical area, and after the balloon body is filled and expanded, the top pressing area presses the retina of the eyeball, and the optical area can transmit light to maintain a certain vision. At present, the forming die of the folded top pressing balloon generally comprises an upper die and a lower die, the upper die is provided with an upper forming cavity matched with the shape of the top pressing area, the lower die is provided with a lower forming cavity matched with the shape of the optical area, or the upper die is provided with an upper forming cavity matched with the shape of the optical area, and the lower die is provided with a lower forming cavity matched with the shape of the top pressing area, so that the upper die and the lower die can form a forming cavity chamber matched with the shape of the folded top pressing balloon after being combined. In order to adapt to the forming cavity chamber, the forming core is generally horizontally arranged in the forming cavity chamber, the position corresponding to the top pressing area is upward, or the position corresponding to the optical area is upward, and the support is generally arranged at the position corresponding to the balloon body below the forming core, so that the support is arranged at the position corresponding to the top pressing area or the optical area of the forming core, and finally the demolding opening of the folded top pressing balloon formed is located in the top pressing area or the optical area, so that after the demolding opening is filled and sealed, a sealing mark is left in the top pressing area or the optical area, which affects the use of the folded top pressing balloon. Content of the utility model

[0007] The utility model wants to solve the technical problem to provide a kind of forming die of folded top pressing balloon, and the folded top pressing balloon formed using the die will not form demolding opening in top pressing area or optical area.

[0008] To solve the above technical problem, the utility model provides a kind of forming die of folded top pressing balloon, including lower die and upper die, the lower die is equipped with lower forming cavity, the upper die is equipped with upper forming cavity, the lower die and the upper die are combined and then the lower forming cavity and the upper forming cavity are mutually spliced to form the forming cavity chamber matched with the shape of the folded top pressing balloon outside, the forming cavity chamber is equipped with the forming core matched with the shape of the folded top pressing balloon inside, the folded top pressing balloon includes spherical cap balloon body, the support is arranged on the forming core and supports the forming core in the forming cavity chamber, so that the forming core and the forming cavity chamber are left balloon forming gap, and the support is arranged at the bottom end of the spherical cap arc surface corresponding to the spherical cap balloon body of the folded top pressing balloon of the forming core.

[0009] Further, the lower die is provided with a first inclined surface, the upper die is provided with a second inclined surface, the lower forming cavity is opened on the first inclined surface, and the upper forming cavity is opened on the second inclined surface, so that the forming cavity chamber formed by the mutual splicing of the lower forming cavity and the upper forming cavity is arranged obliquely, and the position of the bottom end of the spherical cap arc surface corresponding to the spherical cap balloon body of the forming cavity chamber is downward, the forming core is arranged obliquely in the forming cavity chamber, and the position of the bottom end of the spherical cap arc surface corresponding to the spherical cap balloon body of the forming core is downward, and the support is vertically arranged at the bottom end of the spherical cap arc surface corresponding to the spherical cap balloon body of the forming core.

[0010] Further, the folding top pressing balloon comprises a drainage component connected with the spherical cap balloon body, the forming chamber is arranged obliquely to the forming core, in particular, the position corresponding to the spherical cap balloon body is at the oblique lower end, and the position corresponding to the drainage component is at the oblique upper end.

[0011] Further, the first inclined surface is located on the top surface of the lower mold, and the second inclined surface is located on the bottom surface of the upper mold.

[0012] Further, the first inclined surface and the second inclined surface have the same inclination angle.

[0013] Further, the lower forming cavity is matched with the lower half of the external shape of the folding top pressing balloon, and the upper forming cavity is matched with the upper half of the external shape of the folding top pressing balloon.

[0014] The folding top pressing balloon formed by the folding top pressing balloon forming mold has the following beneficial effects: the support is arranged at the bottom end of the spherical cap arc surface of the spherical cap balloon body corresponding to the folding top pressing balloon of the forming core, so that the demolding opening of the folding top pressing balloon formed by the folding top pressing balloon formed by the folding top pressing balloon forming mold is located at the bottom end of the spherical cap arc surface of the spherical cap balloon body, and is not located at the top end of the spherical cap arc surface or the bottom surface of the spherical cap balloon body, that is, the demolding opening is not located at the top pressing area or the optical area of the folding top pressing balloon, so that the sealing mark left after the demolding opening is filled and sealed does not affect the use of the folding top pressing balloon. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a first perspective view of the lower mold and the upper mold of the folding top pressing balloon forming mold after separation.

[0016] Figure 2 is a second perspective view of the lower mold and the upper mold of the folding top pressing balloon forming mold after separation.

[0017] Figure 3 is a schematic view of the lower mold, the upper mold and the forming core of the folding top pressing balloon forming mold after separation.

[0018] Figure 4 is a schematic view of the folding top pressing balloon with a demolding opening.

[0019] Figure 5 is a schematic view of the folding top pressing balloon after the demolding opening is filled and sealed. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below in combination with specific embodiments.

[0021] The present embodiment provides a folding top pressing balloon forming mold, which is used for forming a folding top pressing balloon as shown in Figure 5The folding top compression balloon shown comprises a balloon body 4 and a drainage component 5 connected to each other, the balloon body 4 is in the shape of a spherical cap, which comprises a planar spherical cap bottom surface 41 and a curved spherical cap arc surface 42, the top end 421 of the spherical cap arc surface 42 of the balloon body 4 is a compression area for compressing the eyeball retina, and the spherical cap bottom surface 41 is an optical area capable of transmitting light to maintain a certain vision. The balloon body 4 is hollow inside to form a balloon cavity for accommodating a filling medium, and the drainage component 5 is connected to the balloon body 4 and communicates with the balloon cavity. Specifically, the drainage component 5 comprises a drainage valve 51 and a drainage pipe 52, the drainage valve 51 is hollow inside to form a cavity structure, and the cavity structure of the drainage valve 51 is connected to the spherical cap arc surface 42 of the balloon body 4 through the drainage pipe 52 and communicates with the balloon cavity.

[0022] As shown in Figure 1 , Figure 2 and Figure 3 , the forming mold of the folding top compression balloon comprises a lower mold 1 and an upper mold 2, the top surface of the lower mold 1 is provided with a first inclined surface 12, the bottom surface of the upper mold 2 is provided with a second inclined surface 22, the inclination angles of the first inclined surface 12 and the second inclined surface 22 are the same, the first inclined surface 12 is provided with a lower forming cavity 11, and the second inclined surface 22 is provided with an upper forming cavity 21, wherein the lower forming cavity 11 is matched with the lower half of the external shape of the folding top compression balloon, the upper forming cavity 12 is matched with the upper half of the external shape of the folding top compression balloon, and when the lower mold 1 and the upper mold 2 are closed, the first inclined surface 12 and the second inclined surface 22 are matched, so that the lower forming cavity 11 and the upper forming cavity 21 are spliced with each other to form a forming chamber matched with the external shape of the folding top compression balloon as shown in Figure 5 . Since the lower forming cavity 11 is arranged on the first inclined surface 12, and the upper forming cavity 21 is arranged on the second inclined surface 22, the forming chamber formed by splicing the lower forming cavity 11 and the upper forming cavity 21 is arranged obliquely, and the position corresponding to the spherical cap balloon body 4 is at the oblique lower end, and the position corresponding to the drainage component 5 is at the oblique upper end.

[0023] The forming chamber is obliquely provided with a forming core 3 matched with the internal shape of the folding top compression balloon. Like the forming chamber, the position corresponding to the spherical cap balloon body 4 of the forming core 3 is at the oblique lower end, and the position corresponding to the drainage component 5 is at the oblique upper end. The forming core 3 is provided with a support 31 vertically arranged at the bottom end 422 of the spherical cap arc surface 42 corresponding to the spherical cap balloon body 4 of the folding top compression balloon and detachably mounted on the lower mold 1, so as to support the forming core 3 in the forming chamber and leave a balloon forming gap between the forming core 3 and the forming chamber.

[0024] In the process of forming the folded top pressing balloon, the lower mold 1 and the upper mold 2 are closed to form a forming cavity that matches the shape of the folded top pressing balloon, and the forming core 3 is supported by the support 31 in the forming cavity, leaving a balloon forming gap between the forming cavity. Then, the normal temperature liquid glue is injected into the forming cavity until the normal temperature liquid glue wraps the forming core 3 and fills the forming cavity. Then, the forming mold and the normal temperature liquid glue are sent into the vulcanizing machine to heat and vulcanize the normal temperature liquid glue to form the folded top pressing balloon. After forming, the lower mold 1 and the upper mold 2 are separated, and then the folded top pressing balloon and the forming core 3 are taken out of the lower mold 1. Due to the presence of the support 31, the folded top pressing balloon formed will form a demolding opening 6 at the position of the support 31, i.e. the demolding opening 6 is located at the bottom end 422 of the spherical crown arc surface 42 of the spherical crown balloon body 4. Then, the folded top pressing balloon is separated from the forming core 3 to obtain the folded top pressing balloon as shown in Figure 4 After the folded top pressing balloon is separated from the forming core 3, the demolding opening 6 on the folded top pressing balloon is filled with medical silicone to obtain the folded top pressing balloon as shown in Figure 5 , which ensures that the balloon body 4 can be inflated into a spherical crown top pressing eye retina for treatment after the filling medium is injected.

[0025] In this embodiment, the demolding opening 6 formed by the folded top pressing balloon is located at the bottom end 422 of the spherical crown arc surface 42 of the spherical crown balloon body 4, not at the top end 421 of the spherical crown arc surface 42 or the spherical crown bottom surface 41, i.e. the demolding opening 6 is not located in the top pressing area or the optical area of the folded top pressing balloon. Therefore, the filling mark left after the demolding opening 6 is filled will not affect the use of the folded top pressing balloon.

[0026] The above description is only an embodiment of the present application, and does not limit the scope of patent protection. Those skilled in the art can make non-essential changes or substitutions based on the present application, and still fall within the scope of patent protection.

Claims

1. A molding die for a folding pressure balloon, comprising a lower die (1) and an upper die (2), wherein the lower die (1) is provided with a lower molding cavity (11) and the upper die (2) is provided with an upper molding cavity (21), wherein when the lower die (1) and the upper die (2) are closed, the lower molding cavity (11) and the upper molding cavity (21) are assembled to form a molding chamber adapted to the external shape of the folding pressure balloon, wherein a molding core (3) adapted to the internal shape of the folding pressure balloon is provided in the molding chamber, the folding pressure balloon comprising a crown-shaped balloon body (4), and a support member (31) is provided on the molding core (3) to support the molding core (3) in the molding chamber, thereby leaving a balloon molding gap between the molding core (3) and the molding chamber, characterized in that, The support (31) is arranged at the bottom end (422) of the dome arc surface (42) of the corresponding dome-shaped balloon body (4) of the forming core (3).

2. The forming mold according to claim 1, characterized by The lower mold (1) is provided with a first inclined surface (12), the upper mold (2) is provided with a second inclined surface (22), the lower forming cavity (11) is arranged on the first inclined surface (12), and the upper forming cavity (21) is arranged on the second inclined surface (22), so that the lower forming cavity (11) and the upper forming cavity (21) are arranged in an inclined manner to form a forming chamber, the bottom end (422) of the dome arc surface (42) of the corresponding dome-shaped balloon body (4) of the forming chamber is arranged downward, the forming core (3) is arranged in the forming chamber in an inclined manner, the bottom end (422) of the dome arc surface (42) of the corresponding dome-shaped balloon body (4) of the forming core (3) is arranged downward, and the support (31) is vertically arranged at the bottom end (422) of the dome arc surface (42) of the corresponding dome-shaped balloon body (4) of the forming core (3).

3. The forming mold of claim 2, wherein The folding top compression balloon comprises a drainage component (5) connected with the dome-shaped balloon body (4), and the forming chamber and the forming core (3) are arranged in an inclined manner, specifically, the corresponding dome-shaped balloon body (4) is arranged at the lower end of the inclination, and the corresponding drainage component (5) is arranged at the upper end of the inclination.

4. The forming mold of claim 2 wherein, The first inclined surface (12) is located on the top surface of the lower mold (1), and the second inclined surface (22) is located on the bottom surface of the upper mold (2).

5. The forming mold of claim 2 wherein, The first inclined surface (12) and the second inclined surface (22) have the same inclination angle.

6. The forming mold of claim 1 wherein, The lower forming cavity (11) is matched with the lower half of the external shape of the folding top compression balloon, and the upper forming cavity (21) is matched with the upper half of the external shape of the folding top compression balloon.

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