CN217090788U

CN217090788U - Wound expander for medical operation

Info

Publication number: CN217090788U
Application number: CN202121389151.2U
Authority: CN
Inventors: 金自成
Original assignee: Alemi Silica Gel Technology Zhongshan Co ltd
Current assignee: Alemi Silica Gel Technology Zhongshan Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-08-02
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a wound dilator for medical operation, which comprises an expansion inner ring and a support outer ring, wherein the expansion inner ring is sequentially provided with a first plastic layer and a first silica gel layer from inside to outside, the support outer ring is sequentially provided with a memory alloy strip from inside to outside, the second plastic layer and the second silica gel layer, the memory alloy strip is the cyclic annular structure that both ends do not join, connect through the pellosil between expansion inner circle and the support outer lane, the expansion inner circle is located the downside that supports the outer lane, it is used for strutting the pellosil to support the outer lane, protect the wound periphery, the memory alloy strip plays the effect that deformation recovers, the expansion inner circle is used for the wound expansion, put into the wound after kneading the expansion inner circle, prop open the wound after waiting that its elasticity recovers, expose the operation position, easy operation is convenient, realize the wound expansion with the shortest operation, reduce the risk that causes the injury to the patient, further satisfy treatment.

Description

Wound expander for medical operation

Technical Field

The utility model relates to a medical apparatus, in particular to a wound dilator for medical operation.

Background

In the process of carrying out mammary gland operation treatment, the existing traditional method for expanding wounds generally adopts a method of pulling wounds by forceps, the operation part can be exposed by often needing multiple operations, the patient is easily injured, the operation is troublesome, the use is inconvenient, the fixation is difficult, the workload is increased, and the ideal treatment effect is not met.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a wound dilator for medical operation and a production process thereof.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a wound expander for medical treatment operation, is including expanding the inner circle and supporting the outer lane, expansion inner circle from interior to exterior is equipped with first plastic layer and first silica gel layer in proper order, support outer lane from interior to exterior and be equipped with memory alloy strip, second plastic layer and second silica gel layer in proper order, memory alloy strip is the cyclic annular structure that the both ends do not join, expand the inner circle and support and connect through the pellosil between the outer lane, the expansion inner circle is located the downside that supports the outer lane.

And a silica gel ring is integrally formed in the middle of the silica gel film and is connected with the inner side of the expansion inner ring.

The memory alloy strip is made of nickel-titanium alloy material.

The first plastic layer and the second plastic layer are made of polyester rubber.

The expansion inner ring and the support outer ring are concentrically arranged.

The utility model has the advantages that: the utility model discloses an expansion inner circle and support the outer lane, expand the inner circle and support and connect through the pellosil between the outer lane, expansion inner circle from interior to exterior divide into plastic layer and silica gel layer, support outer lane from interior to exterior and divide into memory alloy strip, plastic layer and silica gel layer, it is used for strutting the pellosil to support the outer lane, it is peripheral to protect the wound, memory alloy strip plays the effect that deformation recovers, the expansion inner circle is used for the wound expansion, put into the wound after mediating the expansion inner circle, treat that its elasticity recovers and strut the wound, expose the operation position, easy operation is convenient, realize the wound expansion with brief operation, reduce the risk that causes the injury to the patient, further satisfy treatment.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic view of the assembly of the memory and memory alloy strip of the plastic hose;

FIG. 5 is a schematic structural view of the expanded inner race and the support outer race after injection molding in a second injection mold;

FIG. 6 is an exploded view of the first injection mold;

FIG. 7 is an exploded schematic view of a second injection mold;

FIG. 8 is a front view of a second injection mold;

fig. 9 is a schematic sectional view of a third injection mold.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without creative work belong to the scope of the present invention.

The directional or positional relationships "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., are those shown in the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Referring to fig. 1 to 9, a wound dilator for medical operation comprises a dilating inner ring 1 and a supporting outer ring 2, wherein the dilating inner ring 1 is sequentially provided with a first plastic layer 3 and a first silica gel layer 4 from inside to outside, the supporting outer ring 2 is sequentially provided with a memory alloy strip 5, a second plastic layer 6 and a second silica gel layer 7 from inside to outside, the memory alloy strip 5 is an annular structure with two non-joint ends, the second plastic layer 6 can prevent the end of the memory alloy strip 5 from penetrating through the second silica gel layer 7 to play a role of interval protection, the dilating inner ring 1 and the supporting outer ring 2 are connected through a silica gel film 8, the dilating inner ring 1 is positioned at the lower side of the supporting outer ring 2, the supporting outer ring is used for stretching the silica gel film to protect the periphery of a wound, the memory alloy strip plays a role of deformation recovery, the dilating inner ring is used for dilating the wound, and is placed in the wound after being kneaded, the wound is propped open after the elasticity of the wound is restored, the surgical site is exposed, the operation is simple and convenient, the wound is expanded by the shortest operation, the risk of injury to a patient is reduced, and the treatment effect is further met.

The middle part integrated into one piece of pellosil 8 has silica gel ring 9, the tip of silica gel ring 9 with the inboard of expansion inner circle 1 links to each other, makes and leaves the interval between expansion inner circle 1 and the support outer lane 2, makes things convenient for expansion inner circle 1 to put into the wound.

The memory alloy strip 5 is made of a nickel-titanium alloy material, the nickel-titanium alloy is a shape memory alloy, the shape memory alloy is a special alloy which can automatically restore the self plastic deformation to the original shape at a certain specific temperature, and the shape memory alloy has good plasticity.

The first plastic layer 3 and the second plastic layer 6 are made of polyester rubber (TPEE), have excellent elasticity of rubber and easy processability of thermoplastic plastics, and the plastic layer is additionally arranged between the memory alloy strip and the silica gel layer, so that the problem that the end part of the memory alloy strip punctures the silica gel layer to cause medical hidden trouble can be avoided.

The expansion inner ring 1 and the support outer ring 2 are arranged concentrically.

A production process for producing the wound dilator for the medical operation comprises the following steps:

the method comprises the following steps: a plastic hose is produced by adopting a plastic extruding machine, and the plastic hose is cut according to equal length;

in this embodiment, the plastic hose is made of polyester rubber (TPEE), which is the same as the plastic material to be injected subsequently;

step two: sleeving two plastic hoses from one end of an annular memory alloy strip, wherein one plastic hose is sleeved in the middle of the memory alloy strip, the other plastic hose is sleeved at two ends of the memory alloy strip, and a gap for exposing the memory alloy strip is reserved between the end parts of the two plastic hoses;

in the embodiment, the memory alloy strip is of a ring-shaped structure customized before delivery, two ends of the memory alloy strip are not connected, and because the two ends of the memory alloy strip are not superposed, an up-and-down position deviation can be generated in the horizontal direction; the length of the gap in the second step is 10mm, and the plastic hose can be filled with the plastic through the gap when the plastic is injected.

Step three: placing the memory alloy strip sleeved with the plastic hose in an injection groove of a first injection mold, injecting plastic by using an injection molding machine, filling the plastic into the plastic hose to ensure that the plastic is completely coated on the memory alloy strip to form a support outer ring, and simultaneously, injection molding an expansion inner ring in the first injection mold;

in the embodiment, the memory alloy strip is placed in the injection groove, and the plastic is filled in the plastic hose, so that the plastic completely covers the surface of the memory alloy strip, the end part of the memory alloy strip is prevented from penetrating out of the plastic layer, and in addition, the inner ring and the outer ring are simultaneously formed in a set of die, so that the die cost can be reduced, and the production efficiency can be improved;

step four: cooling, taking out the support outer ring and the expansion inner ring in the first injection mold, respectively placing the support outer ring and the expansion inner ring into an injection groove of a second injection mold, injecting silica gel by adopting an injection molding machine, and alternately coating silica gel layers on the surfaces of the support outer ring and the expansion inner ring;

in this embodiment, be equipped with on the second injection mold with support the outer lane and expand the groove of moulding plastics of inner circle looks gomphosis, it is equipped with the silica gel groove to mould plastics equidistant interval on the groove, the diameter in silica gel groove is greater than the diameter in the groove of moulding plastics, and silica gel pours into the groove of moulding plastics and silica gel groove into during moulding plastics to form the silica gel layer at silica gel groove, make the cladding of silica gel layer on the surface of supporting the outer lane and expanding the inner circle, make the silica gel layer unanimous with the axle center of interior outer lane.

Step five: cooling, taking out the support outer ring and the expansion inner ring in the second injection mold, respectively placing the support outer ring and the expansion inner ring in an injection groove of a third injection mold, injecting silica gel by using an injection molding machine, filling the interval between silica gel layers on the support outer ring and the expansion inner ring to ensure that the silica gel layer is completely coated on the surface layer, and forming a silica gel film for connecting the support outer ring and the expansion inner ring between the support outer ring and the expansion inner ring;

in this implementation, the third injection mold is provided with injection molding grooves respectively up and down corresponding to the support outer ring and the expansion inner ring, an injection molding film groove is connected between the injection molding grooves, when the inner ring and the outer ring are placed, silica gel layers arranged at intervals on the support outer ring and the expansion inner ring are embedded with the inner wall of the injection molding groove, the support outer ring and the expansion inner ring are jacked up by the respective silica gel layers, so that the axes of the support outer ring and the expansion inner ring are respectively consistent with the axes of the injection molding grooves, the silica gel layers are completely coated on the surface layer after injection molding, the thickness of the silica gel layers is consistent in each direction, and silica gel can be injected from the injection molding grooves or the injection molding film grooves during injection molding.

Step six: and taking out the finished product in a third injection mold after cooling.

By adopting the steps, the plastic layer and the silica gel layer can be completely coated on the expansion inner ring and the support outer ring in sequence, each layer is concentrically arranged, the thickness of the silica gel layer in each direction is consistent, the silica gel layer is prevented from being broken due to different strengths, the risk of injury to a patient is reduced, and the treatment effect is further met.

The above embodiments do not limit the scope of the present invention, and those skilled in the art can make modifications and variations without departing from the overall spirit of the present invention.

Claims

1. The utility model provides a medical treatment is wound expander for operation, its characterized in that is including expansion inner circle (1) and support outer lane (2), expansion inner circle (1) from interior to exterior is equipped with first plastic layer (3) and first silica gel layer (4) in proper order, support outer lane (2) from interior to exterior and be equipped with memory alloy strip (5), second plastic layer (6) and second silica gel layer (7) in proper order, memory alloy strip (5) are the annular structure that both ends do not close, connect through pellosil (8) between expansion inner circle (1) and the support outer lane (2), expansion inner circle (1) is located the downside that supports outer lane (2).

2. The medical surgical wound dilator according to claim 1, wherein a silicone ring (9) is integrally formed in the middle of the silicone membrane (8), and the silicone ring (9) is connected to the inner side of the dilating inner ring (1).

3. A medical-surgical wound dilator according to claim 1, characterised in that said memory alloy strips (5) are made of nitinol material.

4. Medical surgical wound dilator according to claim 1, characterised in that said first (3) and second (6) plastic layers are made of polyester rubber.

5. A medical-surgical wound dilator according to claim 1, characterised in that said dilating inner ring (1) is arranged concentrically with the supporting outer ring (2).