Endoscope hernia patch device

Abstract

The utility model relates to the field of hernia patches, in particular to an endoscope hernia patch device which comprises a patch, a first stretch yarn and a second stretch yarn, the first stretch yarn and the second stretch yarn are connected to the surface of the patch, the first stretch yarn and the second stretch yarn have elastic deformation capacity, the first stretch yarn can elastically deform under the action of external force, and the second stretch yarn can elastically deform under the action of external force. The elastic force of the second stretch yarn is larger than that of the first stretch yarn, and the second stretch yarn has internal force enabling the second stretch yarn to be wound into a tower-shaped spring shape and is used for enabling the patch to be kept in a winding state before the patch reaches a target position. According to the embodiment of the utility model, the combined design of the first elastic wire and the second elastic wire is adopted, the first elastic wire reduces the dependence on the operation of the grasping forceps of the laparoscope, and the second elastic wire ensures that the patch is unfolded at a proper moment, so that the problem that the patch is unfolded too early or too late is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hernia patch field, concretely relates to a laparoscope hernia patch device. BACKGROUND

[0002] The existing hernia patch needs to be compressed into a size suitable for passing through the laparoscope channel first when being implanted into the target position through the laparoscope, and then is unfolded at the implantation position by using the laparoscope forceps.

[0003] However, the unfolding timing of the patch needs to be accurately controlled, and early unfolding may cause the patch to be blocked in the laparoscope channel, affecting the operation of the instrument, and late unfolding may cause the patch to be unable to be completely flattened due to the interference of the surrounding tissues, affecting the repair effect.

[0004] These problems increase the complexity and risk of the operation, and require higher operation skills of the doctor. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a laparoscope hernia patch device to solve the problem that the existing hernia patch cannot be automatically flattened at the target position and relies on manual operation of the laparoscope forceps.

[0006] To solve the above technical problems, the utility model specifically provides the following technical scheme:

[0007] A laparoscope hernia patch device, comprising a patch, a first elastic wire and a second elastic wire connected to the surface of the patch, the first elastic wire and the second elastic wire having elastic deformation ability, the patch being used to be wound and then passed through the laparoscope; the first elastic wire can be elastically deformed under the action of external force, and restore the planar shape automatically after losing the action of external force, for driving the wound patch to be automatically flattened and unfolded; the elastic force of the second elastic wire is greater than that of the first elastic wire, the second elastic wire has an internal force to make itself wound into a tower-shaped spring shape, for keeping the patch in the wound state before the patch reaches the target position.

[0008] Further, it further comprises a fixing sheet, the patch and the fixing sheet are sutured to form a channel, the first elastic wire is inserted into the inside of the channel, and the first elastic wire can be pulled out of the channel.

[0009] Further, the surface of the first elastic wire is coated with an anti-friction material to reduce the friction between the first elastic wire and the channel.

[0010] In another embodiment, the surface of the first elastic wire is coated with a deformable polymer to slow down the release speed of the elastic force of the first elastic wire.

[0011] Further, one end of the first elastic wire is exposed outside the channel and is coiled to form a loop-shaped end, the size of the loop-shaped end is larger than the size of the channel, so that the loop-shaped end cannot enter the inside of the channel.

[0012] Further, the part of the first elastic wire close to the loop-shaped end has a larger diameter, and the part of the first elastic wire away from the loop-shaped end has a smaller diameter.

[0013] Further, the part of the channel close to the loop-shaped end has a larger inner diameter, and the part of the channel away from the loop-shaped end has a smaller inner diameter.

[0014] Further, the extraction end of the second elastic wire is arranged on the outer circumferential surface of the cylinder formed by winding the patch, and the second elastic wire can be extracted along the tangential direction of the cylinder.

[0015] Further, the extraction end of the second elastic wire is arranged at the center of the end of the cylinder formed by winding the patch, and the second elastic wire can be extracted along the axial direction of the cylinder.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The present application provides an improved laparoscopic hernia patch device, which adopts a combination design of a first elastic wire and a second elastic wire, the first elastic wire enables the patch to automatically flatten after being implanted at a target position, reducing the dependence on the operation of a laparoscopic forceps, and the second elastic wire is used to control the timing of the unfolding of the patch, ensuring that the patch unfolds at an appropriate time and avoiding the problems of early or late unfolding. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0019] Figure 1 It is a perspective view of the flattened state of the patch of the first embodiment of the present application;

[0020] Figure 2 It is a perspective view of the winding state of the patch of the first embodiment of the present application, and the patch is in a transparent state;

[0021] Figure 3 It is a perspective view of the flattened state of the other side of the patch of the second embodiment of the present application;

[0022] Figure 4A perspective view of a winding state of a patch of a second embodiment of the utility model;

[0023] Figure 5 A perspective view of a winding state of a patch of a third embodiment of the utility model;

[0024] The reference signs in the drawings represent the following respectively:

[0025] 1 - patch, 2 - first elastic wire, 21 - looped end, 3 - fixing piece, 4 - second elastic wire, 5 - suture. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] The existing hernia patch 1 needs to be compressed and then implanted into a target position through a laparoscope, and then unfolded under the operation of a laparoscopic grabbing clamp. In order to overcome the shortcomings of the prior art, the utility model provides an improved laparoscopic hernia patch 1 device, which aims to realize automatic spreading of the patch 1 and simplify the surgical operation.

[0028] (First embodiment)

[0029] In combination with Figure 1 , the laparoscopic hernia patch 1 device comprises the patch 1 and the first elastic wire 2, the first elastic wire 2 is arranged on one side of the patch 1, and is used for automatic flattening of the patch 1.

[0030] The patch 1 is usually made of synthetic materials (such as polypropylene, polyester, etc.) or biological materials (such as absorbable collagen matrix), the patch 1 usually has a mesh structure and a unidirectional hydrophobic coating, so as to grow into tissue to form a more firm repair effect, while reducing the risk of adhesion with internal organs.

[0031] The first elastic wire 2 is made of medical nickel-titanium alloy, has a flattening internal force, and can restore the planar shape automatically when the external force is lost after the elastic deformation of the first elastic wire 2 under the external force, and drives the patch 1 to spread.

[0032] The first elastic wire 2 is connected with the patch 1 by using a medical-grade adhesive, a hot melting technology or a suturing technology, so as to ensure that the patch 1 and the first elastic wire 2 are connected stably.

[0033] In combination with Figure 2 , the working process of the laparoscopic hernia patch 1 device comprises:

[0034] Step one, after connecting the patch 1 and the first elastic wire 2, the patch 1 is wound into a cylinder which is easy to pass through the laparoscope.

[0035] Step two, after the cylinder passes through the laparoscope, it can naturally rebound into a rectangular sheet, and the first elastic wire 2 can be separated from the patch 1 under the operation of the laparoscope grab.

[0036] In order to improve the stability of the connection between the patch 1 and the first elastic wire 2, one side of the patch 1 is sewn with a fixing sheet 3 which is the same material as the patch 1, and a channel is formed between the patch 1 and the fixing sheet 3 for the first elastic wire 2 to slide through. The channel not only fixes the position of the first elastic wire 2, but also avoids direct exposure of the first elastic wire 2, reduces the risk of displacement of the first elastic wire 2 caused by friction with the inner wall of the laparoscope.

[0037] The inner diameter of the channel is larger than the outer diameter of the first elastic wire 2, which can limit the activity range of the elastic wire and avoid excessive direct force on the patch 1 body. After the patch 1 is fully expanded, the first elastic wire 2 can be easily pulled out from the inside of the channel.

[0038] Further, the surface of the first elastic wire 2 can be coated with different materials, such as anti-friction materials and deformable polymers, to achieve different effects.

[0039] When the surface of the first elastic wire 2 is coated with anti-friction material (polytetrafluoroethylene), it can reduce the friction between the first elastic wire 2 and the channel.

[0040] When the surface of the first elastic wire 2 is coated with deformable polymer (silicone or resin), it can slow down the release speed of the elastic force of the first elastic wire 2, making the spreading process more gentle.

[0041] In order to facilitate the laparoscope grab to hold and pull out the first elastic wire 2, one end of the first elastic wire 2 is exposed outside the channel and coiled to form a loop-shaped end 21. The size of the loop-shaped end 21 is larger than the size of the channel, so that the loop-shaped end 21 cannot enter the inside of the channel and is easy to be held by the laparoscope grab.

[0042] Further, different parts of the first elastic wire 2 adopt variable diameter design. The first elastic wire 2 near the loop-shaped end 21 is thicker to increase the tensile strength and reduce the risk of breaking during the operation of the laparoscope grab. The first elastic wire 2 inside the channel is thinner to reduce friction.

[0043] Further, different parts of the channel adopt variable diameter design. The channel near the loop-shaped end 21 is looser to facilitate the laparoscope grab to grab, and the channel away from the loop-shaped end 21 is more compact to limit the sliding range of the first elastic wire 2.

[0044] The first embodiment is characterized in that the first elastic wire 2 is arranged on the patch 1, so that the patch 1 can be automatically flattened after being implanted at the target position, thereby reducing the operation steps of unfolding the patch 1 during the surgery, reducing the difficulty and risk of the surgery, and improving the efficiency of the surgery.

[0045] Although the first embodiment improves the automatic spreading effect of the patch 1, in some cases, the patch 1 may have the problems of rebounding too fast or not being fully unfolded when passing through the laparoscope. In order to solve these problems, the utility model provides a second embodiment, which improves the structure of the patch 1.

[0046] (Second embodiment)

[0047] In combination with Figure 3 , Figure 4 , the laparoscopic hernia patch 1 device further comprises a second elastic wire 4, the second elastic wire 4 is made of medical nickel-titanium alloy, and the second elastic wire 4 has an internal force of winding itself into a tower-shaped spring shape.

[0048] The second elastic wire 4 is arranged on one side of the patch 1, and the two are connected by using a suture 5, so as to ensure the stable connection of the patch 1 and the second elastic wire 4, thereby ensuring that the patch 1 always maintains the posture of a cylinder before reaching the target position.

[0049] The second elastic wire 4 can be separated from the patch 1 under the operation of the laparoscopic forceps, for example, the second elastic wire 4 is extracted from the suture 5, and if necessary, the laparoscopic scissors can also be used to cut the suture 5.

[0050] In combination with Figure 4 , the extraction end of the second elastic wire 4 is arranged on the outer circumferential surface of the cylinder formed by winding the patch 1, the second elastic wire 4 forms a loop-shaped end 21 at this position, and the second elastic wire 4 is easy to extract along the tangent direction of the cylinder.

[0051] The second embodiment is characterized in that the second elastic wire 4 is arranged on the patch 1 and wound into a tower-shaped spring shape, so as to ensure that the patch 1 always maintains the posture of a cylinder before reaching the target position. The defect is that even if a part of the second elastic wire 4 is extracted, the remaining second elastic wire 4 is still bound on the outside of the cylinder, and only after most of the second elastic wire 4 is extracted, the patch 1 can be automatically flattened.

[0052] (Third embodiment)

[0053] In combination with Figure 5The third embodiment is different from the second embodiment in that the extraction end of the second elastic wire 4 is arranged at the center of the end of the cylinder formed by winding the patch 1, the second elastic wire 4 is not easy to be extracted along the axial direction of the cylinder, but the patch 1 can be gradually flattened during the extraction of the second elastic wire 4.

[0054] By designing the extraction end at different positions, the user can select the unfolding mode of the patch 1 according to the operation requirement, greater flexibility and controllability are provided, and the safety and effect of the operation are further improved.

[0055] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application, the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and the modification or equivalent replacement is also regarded as falling within the protection scope of the embodiments of the present application.

Claims

1. A laparoscopic hernia patch device, characterized in that, it comprises a patch (1), and a first elastic wire (2) and a second elastic wire (4) connected to the surface of the patch (1), the first elastic wire (2) and the second elastic wire (4) have elastic deformation ability, the patch (1) is used to be wound and then passed through a laparoscope; the first elastic wire (2) can be elastically deformed under external force and restore the planar shape automatically after losing the external force, which is used to drive the wound patch (1) to automatically flatten and expand; the second elastic wire (4) has greater elasticity than the first elastic wire (2), and has an internal force to make itself wind into a tower-shaped spring shape, which is used to keep the patch (1) in a wound state before the patch (1) reaches the target position.

2. The laparoscopic hernia patch device according to claim 1, characterized in that, it further comprises a fixing sheet (3), the patch (1) and the fixing sheet (3) are sutured to form a channel, the first elastic wire (2) is inserted into the inside of the channel, and the first elastic wire (2) can be pulled out of the channel.

3. The laparoscopic hernia patch device according to claim 2, characterized in that, the surface of the first elastic wire (2) is coated with an anti-friction material to reduce the friction between the first elastic wire (2) and the channel.

4. The laparoscopic hernia patch device according to claim 2, characterized in that, the surface of the first elastic wire (2) is coated with a deformable polymer to slow down the release speed of the elasticity of the first elastic wire (2).

5. The laparoscopic hernia patch device according to claim 2, characterized in that, one end of the first elastic wire (2) is exposed outside the channel and is coiled to form a loop-shaped end (21), the size of the loop-shaped end (21) is larger than the size of the channel, so that the loop-shaped end (21) cannot enter the inside of the channel.

6. The laparoscopic hernia patch device according to claim 5, characterized in that, the part of the first elastic wire (2) close to the loop-shaped end (21) has a larger diameter, and the part away from the loop-shaped end (21) has a smaller diameter.

7. The laparoscopic hernia patch device according to claim 5, characterized in that, the inner diameter of the part of the channel close to the loop-shaped end (21) is larger, and the inner diameter of the part of the channel away from the loop-shaped end (21) is smaller.

8. The laparoscopic hernia patch device according to claim 1, characterized in that, the pulling-out end of the second elastic wire (4) is arranged on the outer circumferential surface of the cylinder formed by winding the patch (1), and the second elastic wire (4) can be pulled out along the tangent direction of the cylinder.

9. The laparoscopic hernia patch device according to claim 1, characterized in that, the pulling-out end of the second elastic wire (4) is arranged at the center of the end of the cylinder formed by winding the patch (1), and the second elastic wire (4) can be pulled out along the axis direction of the cylinder.

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