ONE-WAY LIFTING EMBEDDED CATGUT, LIFTING DEVICE, AND PLASTIC SURGERY METHOD USING SAME

Abstract

Provided are a one-way lifting embedded thread, a lifting device and a plastic surgery method using the same. The one-way lifting embedded thread includes a pulling thread and at least one cam body sleeved on the pulling thread. Two ends of the pulling thread are a lifting end and a free end. The free end is provided with an anchor structure for securing the pulling thread. Two sides of the cam body are a large end face and a small end face. The large end face of the cam body faces the free end of the pulling thread. As for the one-way lifting embedded thread, the arrangement of the anchor structure secures the one-way lifting embedded thread to the skin tissue temporarily and prevents the lifting embedded thread from completely slipping into the skin tissue.

Claims

1. A one-way lifting embedded thread, comprising a pulling thread and at least one cam body sleeved on the pulling thread, wherein two ends of the pulling thread are a lifting end and a free end, respectively, and the free end is provided with an anchor structure for securing the pulling thread, and two sides of one of the at least one cam body are a large end face and a small end face, respectively, and the large end face of the one of the at least one cam body faces the free end of the pulling thread.

2. The one-way lifting embedded thread according to claim 1, wherein 4 to 24 cam bodies are sleeved on the pulling thread.

3. The one-way lifting embedded thread according to claim 2, wherein the cam bodies are equally spaced apart on the pulling thread, or the cam bodies are unequally spaced apart in gradient on the pulling thread.

4. The one-way lifting embedded thread according to claim 1, wherein the anchor structure is a hollow knot or a clamp.

5. The one-way lifting embedded thread according to claim 1, wherein the one of the at least one cam body is a tapered structure, and a cross-sectional area of the small end face of the one of the at least one cam body is less than a cross-sectional area of the large end face of the one of the at least one cam body.

6. The one-way lifting embedded thread according to claim 1, wherein the at least one cam body is disposed on the pulling thread in at least one of the following manners: the at least one cam body is formed integrally with the pulling thread; the at least one cam body is secured to the pulling thread through an adhesive; the at least one cam body is secured to the pulling thread through heat sealing; and a stopper is disposed between two adjacent ones of the at least one cam body to define a relative position of the at least one cam body.

7. The one-way lifting embedded thread according to claim 1, wherein the one of the at least one cam body is a solid tapered structure, or a tapered structure penetrated in an axial direction of the one of the at least one cam body.

8. The one-way lifting embedded thread according to claim 1, wherein the at least one cam body and the pulling thread are made of a degradable material.

9. The one-way lifting embedded thread according to claim 1, wherein at least one of a surface of the pulling thread and a surface of the at least one cam body is loaded with a drug.

10. A lifting device, comprising a tube-shaped conveyor portion, a handgrip, and a one-way lifting embedded thread, wherein the one-way lifting embedded thread comprises a pulling thread and at least one cam body sleeved on the pulling thread, wherein two ends of the pulling thread are a lifting end and a free end, respectively, and the free end is provided with an anchor structure for securing the pulling thread, and two sides of one of the at least one cam body are a large end face and a small end face, respectively, and the large end face of the one of the at least one cam body faces the free end of the pulling thread, wherein the tube-shaped conveyor portion comprises a secured end and an open end, and the secured end is secured to the handgrip, and the lifting end of the pulling thread of the one-way lifting embedded thread is threaded through an inside of the tube-shaped conveyor portion and then out of the open end of the tube-shaped conveyor portion.

11. The lifting device according to claim 10, wherein the open end of the tube-shaped conveyor portion is provided with a cam body position adjusting member, and the cam body position adjusting member is configured to, when the tube-shaped conveyor portion is withdrawn from skin tissue, perform at least one of: readjusting the at least one cam body back to a predetermined position, and straightening and tightening the one-way lifting embedded thread.

12. The lifting device according to claim 10, wherein the open end of the tube-shaped conveyor portion is a necking structure recessed inward in the radial direction of the tube-shaped conveyor portion, and the necking structure is configured to, when the tube-shaped conveyor portion is withdrawn from skin tissue, perform at least one of: readjusting the at least one cam body back to a predetermined position, and straightening and tightening the one-way lifting embedded thread.

13. A plastic surgery method using a lifting device, wherein the lifting device comprises a tube-shaped conveyor portion, a handgrip, and a one-way lifting embedded thread, wherein the one-way lifting embedded thread comprises a pulling thread and at least one cam body sleeved on the pulling thread, wherein two ends of the pulling thread are a lifting end and a free end, respectively, and the free end is provided with an anchor structure for securing the pulling thread, and two sides of one of the at least one cam body are a large end face and a small end face, respectively, and the large end face of the one of the at least one cam body faces the free end of the pulling thread, wherein the tube-shaped conveyor portion comprises a secured end and an open end, and the secured end is secured to the handgrip, and the lifting end of the pulling thread of the one-way lifting embedded thread is threaded through an inside of the tube-shaped conveyor portion and then out of the open end of the tube-shaped conveyor portion, the plastic surgery method comprises: (I) pricking skin tissue with the tube-shaped conveyor portion; pressing the skin tissue to secure the lifting end of the pulling thread of the one-way lifting embedded thread and withdrawing the tube-shaped conveyor portion at the same time to make the one-way lifting embedded thread stay in the skin tissue; and then lifting the free end of the pulling thread to adjust a lifting force to remove wrinkles; and (II) securing the one-way lifting embedded thread with the anchor structure to prevent the lifting embedded thread from completely slipping into the skin tissue.

14. The plastic surgery method according to claim 13, wherein before step (I), the plastic surgery method further comprises installing the one-way lifting embedded thread, wherein the installing comprises tightening the one-way lifting embedded thread and threading the lifting end of the pulling thread through the inside of the tube-shaped conveyor portion and then out of the open end of the tube-shaped conveyor portion by using a threading tool; and then retaining a redundant part of the pulling thread; in step (I), the skin tissue is pressed to secure the redundant part of the pulling thread after the threading so as to secure the one-way lifting embedded thread.

15. The one-way lifting embedded thread according to claim 1, in a direction from the small end face of the one of the at least one cam body to the large end face of the one of the at least one cam body, a wall thickness of the one of the at least one cam body reduces gradually.

16. The one-way lifting embedded thread according to claim 2, wherein a distance between two adjacent ones of the at least one cam body is in the range of 2.5 mm to 15 mm.

17. The one-way lifting embedded thread according to claim 1, wherein a wall thickness at the small end face of the at least one cam body is in the range of 0.1 mm to 0.9 mm, and a wall thickness at the large end face of the at least one cam body is in the range of 0.05 mm to 0.2 mm.

18. The lifting device according to claim 11, the cam body position adjusting member is a clamping baffle disposed at the open end of the tube-shaped conveyor portion, and the clamping baffle is secured inside the tube-shaped conveyor portion.

19. The plastic surgery method according to claim 13, wherein in step (I), when the tube-shaped conveyor portion is being withdrawn from the skin tissue, at least one of a cam body position adjusting member and a necking structure performs at least one of: readjusting the at least one cam body to a predetermined position, or straightening and tightening the one-way lifting embedded thread.

20. The plastic surgery method according to claim 19, wherein the predetermined position is a position where the large end face of the at least one cam body is fastened by a stopper.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0071] FIG. 1 is a view illustrating the structure of a lifting device according to an embodiment of the present application, in which the enlarged region illustrates the position for installing a one-way lifting embedded thread.

[0072] FIG. 2 is a view illustrating the structure of a one-way lifting embedded thread according to an embodiment of the present application, in which cam bodies are secured to a pulling thread through stoppers.

[0073] FIG. 3 is a view illustrating the structure of a one-way lifting embedded thread according to an embodiment of the present application, in which cam bodies are formed integrally with a pulling thread.

[0074] FIG. 4 is a view illustrating the structure of a lifting device (with no one-way lifting embedded thread included) according to an embodiment of the present application, in which the enlarged region illustrates the structure of an open end and a clamping baffle.

REFERENCE LIST

[0075] 1 one-way lifting embedded thread [0076] 11 pulling thread [0077] 12 cam body [0078] 2 tube-shaped conveyor portion [0079] 21 embedded thread outlet [0080] 22 cam body position adjusting member [0081] 3 handgrip

DETAILED DESCRIPTION

[0082] Solutions of the present application are further described hereinafter through embodiments in conjunction with the drawings.

[0083] In an embodiment, the present application provides a one-way lifting embedded thread 1. As shown in FIGS. 2 and 3, the one-way lifting embedded thread 1 includes a pulling thread 11 and at least one cam body 12 sleeved on the pulling thread 11. Two ends of the pulling thread 11 are a lifting end and a free end, respectively. The free end is provided with an anchor structure for securing the pulling thread 11. The anchor structure may be selected as a hollow knot or a clamp. Two sides of the cam body 12 are a large end face and a small end face, respectively. The large end face of the cam body 12 faces the free end of the pulling thread 11.

[0084] The cam bodies 12 are equally spaced apart or unequally spaced apart in gradient on the pulling thread 11. The distance between two adjacent cam bodies 12 is in the range of 2.5 mm to 15 mm. 4 to 24 cam bodies 12 are sleeved on the pulling thread 11. As for the matching relation between the distance of adjacent cam bodies 12 and the number of cam bodies 12, those skilled in the art may make appropriate adjustments according to the physical condition of a patient and the expected lifting effect of the patient.

[0085] The cam body 12 is a tapered structure, optionally including a cone (a truncated cone) and a pyramid (a truncated pyramid). The cam body 12 may be a solid tapered structure or a tapered structure penetrated in the axial direction of the cam body 12.

[0086] When the cam body 12 is a solid tapered structure, the securing mode of the cam body 12 to the pulling thread 11 is shown in FIG. 3. The one-way lifting embedded thread 1 is formed integrally using the hot-pressing injection molding process. When the cam body 12 is a tapered structure penetrated in the axial direction of the cam body 12, in the direction from the small end face to the large end face, the wall thickness of the cam body 12 reduces gradually. Optionally, the cam body 12 may be secured to the pulling thread 11 through an adhesive, heat sealing, or stoppers. In an embodiment, as shown in FIG. 2, the positions of the cam bodies 12 are defined by knotting the pulling thread.

[0087] The cam body 12 and the pulling thread 11 are made of a degradable material that does not need to be taken out after the surgery but is degraded in the body with no toxic or side effects on the human body. The degradable material includes at least one of a synthetic degradable polymer material and a naturally degradable polymer material. The synthetic degradable polymer material includes any one or a combination of at least two of polylactic acid, L-polylactic acid, DL-polylactic acid, poly(lactic-co-glycolic acid) copolymer, polycaprolactone, poly(3-hydroxybutyrate-co-3-hydroxyvalerate), polyacetylglutamic acid, polyorthoester, polyethylene oxide/polybutene copolymer, and poly(lactide-co-carpolactone) copolymer. The naturally degradable polymer material includes any one or a combination of at least two of collagen, gelatin, chitosan, hyaluronic acid, sodium alginate, and agarose.

[0088] At least one of the surface of the pulling thread 11 and the surface of the cam body 12 is loaded with a drug. The drug is selected from one or a combination of at least two of a non-steroid anti-inflammatory drug, a steroid anti-inflammatory drug, an opiate drug, and an analgesic adjuvant. The drug may be loaded on the surface of the pulling thread 11 or the surface of the cam body 12. Alternatively, the drug may be loaded on the surface of the pulling thread 11 and the surface of the cam body 12.

[0089] In another embodiment, the present application provides a lifting device as shown in FIG. 1. The lifting device includes a tube-shaped conveyor portion 2, a handgrip 3, and the one-way lifting embedded thread 1 described in the preceding embodiment. The tube-shaped conveyor portion 2 includes a secured end and an open end. The secured end is secured to the handgrip 3. The open end is provided with an embedded thread outlet 21. (For the specific structure, refer to the partially enlarged view in FIG. 1. The partially enlarged region illustrates the structure of the one-way lifting embedded thread 1 and the state when the one-way lifting embedded thread 1 is threaded out of the embedded thread outlet 21.)

[0090] The lifting end of the pulling thread 11 of the one-way lifting embedded thread 1 is threaded through the inside of the tube-shaped conveyor portion 2 and then out of the embedded thread outlet 21. Terms “thread out of” and “thread through” herein refer to positional relationships and states during installation, and do not refer to installation actions or methods.

[0091] The embedded thread outlet 21 is provided with a cam body position adjusting member 22. The cam body position adjusting member 22 is configured to readjust the cam body 12 to back predetermined position when the tube-shaped conveyance portion 2 is withdrawn from the skin tissue. Specifically, an optional cam body position adjusting member 22 is a clamping baffle disposed at the embedded thread outlet 21. (For the specific structure and positional relationship of the clamping baffle, refer to the partially enlarged view in FIG. 4.) The clamping baffle is made of a soft plastic material. Optionally, the soft plastic material is any one or a combination of at least two of silicone rubber, polyurethane (PU), polypropylene (PP), high-density polyethylene (HDPE), and polytetrafluoroethylene (PTFE).

[0092] Additionally, if the cam body position adjusting member 22 is not provided, a necking structure recessed inward in the radial direction of the tube-shaped conveyor portion 2 may be designed at the open end of the tube-shaped conveyor portion 2. The necking structure is configured to readjust the cam body 12 back to predetermined position when the tube-shaped conveyor portion 2 is withdrawn from the skin tissue.

[0093] In order to facilitate threading and minimize the damage to the cam body 12, the cam body position adjusting member 22 and the necking structure are disposed at the open end, that is, the cam body position adjusting member 22 and the necking structure are located at the end of the threading path. As a result, during the threading process, the cam body 12 does not contact with the cam body position adjusting member 22 or the necking structure. And when the tube-shaped conveyance portion 2 is withdrawn from the skin tissue, each cam body 12 can pass through the cam body position adjusting member 22 or the necking structure.

[0094] It is to be understood by those skilled in the art that a simultaneous provision of the optional cam body position adjusting member 22 and the necking structure is not limited in the present application.

[0095] In another embodiment, the present application provides a plastic surgery method using the preceding lifting device to perform lifting. The plastic surgery method includes the steps below.

[0096] Threading is implemented before the surgery. Specifically, the threading process includes: tightening the one-way lifting embedded thread 1; threading the lifting end of the pulling thread 11 into the handgrip 3 of the lifting device, through the inside of the tube-shaped conveyor portion 2, and then out of the embedded thread outlet 21 by using a threading tool; retaining the redundant part of the pulling thread 11; and then bending the redundant part of the pulling thread 11. The redundant part of the pulling thread 11 is used for facilitating the surgeon in pressing the skin tissue to securing the one-way lifting embedded thread 1 when withdrawing the needle in the surgery. Accordingly, the one-way lifting embedded thread 1 is prevented from being withdrawn along with the tube-shaped conveyor portion 2 while the needle is being withdrawn. Terms “thread into” and “thread out of” herein refer to installation actions or methods, and do not refer to installation states and positional relationships.

[0097] The surgery process includes the steps below.

[0098] In step (I), the skin tissue is pricked with the lifting device. As for the cam body 12 on the one-way lifting embedded thread 1, the cross-sectional area increases gradually from the small end face to the large end face, which facilitates entering the tissue and mitigating an injury to the tissue. Then the skin tissue is pressed to secure the lifting end of the pulling thread 11 of the one-way lifting embedded thread 1 (that is, the redundant part of the pulling thread 11 retained in threading before the surgery) and the tube-shaped conveyor portion 2 is withdrawn slowly at the same time.

[0099] In step (II), at the same time of when the tube-shaped conveyor portion 2 is withdrawn, the skin tissue is pressed by the surgeon to secure the lifting end of the pulling thread 11 to become unmovable. In this case, the tube-shaped conveyor portion 2 is withdrawn while the one-way lifting embedded thread 1 still stays in the skin tissue. When the tube-shaped conveyor portion 2 is being withdrawn from the skin tissue, the cam body position adjusting member 22 and/or the necking structure that is disposed at the embedded thread outlet 21 readjusts the cam bodies 12 to the positions of the stoppers and/or straightens and tightens the one-way lifting embedded thread 1 so that large end faces of the cam bodies 12 are fastened by the stoppers, guaranteeing no offset in the relative position of each cam body 12 entering the skin tissue. In this case, the skin tissue is forced evenly under the lifting action of the cam bodies 12.

[0100] In step (III), after the tube-shaped conveyor portion 2 is withdrawn, most of the one-way lifting embedded thread 1 stays in the skin tissue. However, the free end of the pulling thread 11 of the one-way lifting embedded thread 1 stays outside the skin tissue. The surgeon lifts the free end of the pulling thread 11 to adjust the lifting force to remove wrinkles.

[0101] After the surgery, the free end of the pulling thread 11 is secured to the pricked hole by knotting the free end of the pulling thread 11 to the skin tissue. The one-way lifting embedded thread 1 stays in the skin tissue. The one-way lifting embedded thread 1 is made of a biodegradable material that is degradable inside the human tissue, thus causing no toxic or side effects on the human body.

[0102] In the process of surgery, a plurality of one-way lifting embedded threads 1 are embedded in the same pricked hole by repeating step (I) and step (II). After embedding, free ends of pulling threads 11 of the one-way lifting embedded threads 1 are knotted in pairs or with each other so as to be secured at the pricked hole. This reduces the number of pricked holes, implements lifting on multiple parts, and avoids apparent surgical signs or irretrievable scars after the surgery.

Embodiment One

[0103] This embodiment provides a one-way lifting embedded thread 1. The one-way lifting embedded thread 1 includes a pulling thread 11 and four cam bodies 12 sleeved on the pulling thread 11. Each cam body 12 is equally spaced apart on the pulling thread 11. The distance between two adjacent cam bodies 12 is 15 mm. Thread knots are formed between adjacent cam bodies 12 as stoppers by knotting the pulling thread 11 to define relative positions of the adjacent cam bodies 12.

[0104] Two ends of the pulling thread 11 are a lifting end and a free end, respectively. The free end is provided with a hollow knot for securing the pulling thread 11. The hollow knot at the free end replaces part of the cam bodies in the two-way lifting embedded thread that are configured to clamp the skin tissue, thus preventing the one-way lifting embedded thread 1 from completely slipping into the skin tissue, enhancing the lifting force, and improving lifting duration.

[0105] Two sides of the cam body 12 are a large end face and a small end face, respectively. The large end face faces the free end of the pulling thread 11. Naturally, the small end face faces the lifting end of the pulling thread 11. The cam body 12 is a tapered structure penetrated in the axial direction of the cam body 12. The wall thickness at the small end face is 0.9 mm. The wall thickness at the large end face is 0.2 mm. In the direction from the small end face to the large end face, the wall thickness of the cam body 12 reduces gradually. That is, the wall thickness of the cam body 12 reduces evenly from 0.9 mm to 0.2 mm.

[0106] The cam bodies 12 and the pulling thread 11 are made of a degradable material that does not need to be taken out after the surgery but is degraded in the body. The surface of the cam bodies 12 and the surface of the pulling thread 11 are loaded with a non-steroid anti-inflammatory drug.

[0107] This embodiment further provides a lifting device. The lifting device includes a tube-shaped conveyor portion 2, a handgrip 3, and the preceding one-way lifting embedded thread 1. The tube-shaped conveyor portion 2 includes a secured end and an open end. The secured end is secured to the handgrip 3. The open end is provided with an embedded thread outlet 21. The lifting end of the pulling thread 11 of the one-way lifting embedded thread 1 is threaded through the inside of the tube-shaped conveyor portion 2 and then out of the embedded thread outlet 21.

[0108] A clamping baffle made of silicone rubber is disposed at the embedded thread outlet 21. The clamping baffle is configured to, when the tube-shaped conveyor portion 2 is withdrawn from the skin tissue, readjust the cam bodies 12 back to predetermined positions and straighten and tighten the one-way lifting embedded thread 1. The clamping baffle is secured inside the tube-shaped conveyor portion 2 in the radial direction of the tube-shaped conveyor portion 2.

[0109] In the process of using the preceding lifting device to implement the plastic surgery to remove wrinkles, as the tube-shaped conveyor portion 2 is withdrawn from the skin tissue, the clamping baffle disposed at the embedded thread outlet 21 applies friction to the cam bodies 12. On one hand, the cam bodies 12 are readjusted to the positions of the thread knots so that large end faces of the cam bodies 12 are fastened by the thread knots, guaranteeing no offset in the relative position of each cam body 12 entering the skin tissue. In this case, the skin tissue is forced evenly under the lifting action of the cam bodies 12. On the other hand, friction applied to the cam bodies 12 helps straighten and tighten the one-way lifting embedded thread 1 so as to prevent the one-way lifting embedded thread 1 from winding inside the skin tissue, causing an uneven force in the process of lifting, and affecting the lifting effect.

Embodiment Two

[0110] This embodiment provides a one-way lifting embedded thread 1. The one-way lifting embedded thread 1 includes a pulling thread 11 and fourteen cam bodies 12 sleeved on the pulling thread 11. Each cam body 12 is equally spaced apart on the pulling thread 11. The distance between two adjacent cam bodies 12 is 5.5 mm. The cam bodies 12 are secured to the pulling thread 11 through an adhesive.

[0111] Two ends of the pulling thread 11 are a lifting end and a free end, respectively. The free end is provided with a clamp for securing the pulling thread 11. Specifically, the clamp structure may include a one-way barb structure disposed on the pulling thread 11 and a clamp head interacting with the barb structure to implement one-way locking. After the clamp head and the barb structure are locked, the entire clamp structure can only move backward but cannot move forward. The clamp structure replaces part of the cam bodies in the two-way lifting embedded thread that are configured to clamp the skin tissue, thus preventing the one-way lifting embedded thread 1 from completely slipping into the skin tissue, enhancing the lifting force, and improving lifting duration.

[0112] Two sides of the cam body 12 are a large end face and a small end face. The large end face faces the free end of the pulling thread 11. The small end face faces the lifting end of the pulling thread 11. The cam body 12 is a tapered structure penetrated in the axial direction of the cam body 12. The wall thickness at the small end face is 0.1 mm. The wall thickness at the large end face is 0.05 mm. In the direction from the small end face to the large end face, the wall thickness of the cam body 12 reduces gradually. That is, the wall thickness of the cam body 12 reduces evenly from 0.1 mm to 0.05 mm.

[0113] The cam bodies 12 and the pulling thread 11 are made of a degradable material that does not need to be taken out after the surgery but is degraded in the body. The surface of the cam bodies 12 and the surface of the pulling thread 11 are loaded with a steroid anti-inflammatory drug.

[0114] This embodiment further provides a lifting device. The lifting device includes a tube-shaped conveyor portion 2, a handgrip 3, and the preceding one-way lifting embedded thread 1. The tube-shaped conveyor portion 2 includes a secured end and an open end. The secured end is secured to the handgrip 3. The open end is provided with an embedded thread outlet 21. The lifting end of the pulling thread 11 of the one-way lifting embedded thread 1 is threaded through the inside of the tube-shaped conveyor portion 2 and then out of the embedded thread outlet 21.

[0115] A necking structure recessed inward in the radial direction of the tube-shaped conveyor portion 2 is designed at the open end of the tube-shaped conveyor portion 2. The necking structure is configured to straighten and tighten the one-way lifting embedded thread 1 when the tube-shaped conveyor portion 2 is withdrawn from the skin tissue so as to prevent the one-way lifting embedded thread 1 from winding inside the skin tissue.

[0116] In the process of using the preceding lifting device to implement the plastic surgery to remove wrinkles, as the tube-shaped conveyor portion 2 is withdrawn from the skin tissue, the necking structure applies friction to the cam bodies 12 and thus straightens and tightens the one-way lifting embedded thread 1 so as to prevent the one-way lifting embedded thread 1 from winding inside the skin tissue, causing an uneven force in the process of lifting, and affecting the lifting effect.

Embodiment Three

[0117] This embodiment provides a one-way lifting embedded thread 1. The one-way lifting embedded thread 1 includes a pulling thread 11 and ten cam bodies 12 sleeved on the pulling thread 11. Each cam body 12 is equally spaced apart on the pulling thread 11. The distance between two adjacent cam bodies 12 is 5.5 mm. The cam bodies are secured to the pulling thread 11 through heat sealing.

[0118] Two ends of the pulling thread 11 are a lifting end and a free end, respectively. The free end is provided with a hollow knot for securing the pulling thread 11. The hollow knot replaces part of the cam bodies in the two-way lifting embedded thread that are configured to clamp the skin tissue, thus preventing the one-way lifting embedded thread 1 from completely slipping into the skin tissue, enhancing the lifting force, and improving lifting duration.

[0119] Two sides of the cam body 12 are a large end face and a small end face. The large end face faces the free end of the pulling thread 11. The small end face faces the lifting end of the pulling thread 11. The cam body 12 is a tapered structure penetrated in the axial direction of the cam body 12. The wall thickness at the small end face is 0.3 mm. The wall thickness at the large end face is 0.09 mm. In the direction from the small end face to the large end face, the wall thickness of the cam body 12 reduces gradually. That is, the wall thickness of the cam body 12 reduces evenly from 0.3 mm to 0.09 mm.

[0120] The cam bodies 12 and the pulling thread 11 are made of a degradable material that does not need to be taken out after the surgery but is degraded in the body. The surface of the cam bodies 12 and the surface of the pulling thread 11 are loaded with an opiate drug.

[0121] This embodiment further provides a lifting device. The lifting device includes a tube-shaped conveyor portion 2, a handgrip 3, and the preceding one-way lifting embedded thread 1. The tube-shaped conveyor portion 2 includes a secured end and an open end. The secured end is secured to the handgrip 3. The open end is provided with an embedded thread outlet 21. The lifting end of the pulling thread 11 of the one-way lifting embedded thread 1 is threaded through the inside of the tube-shaped conveyor portion 2 and then out of the embedded thread outlet 21.

[0122] A clamping baffle made of HDPE is disposed at the embedded thread outlet 21. Moreover, a necking structure recessed inward in the radial direction of the tube-shaped conveyor portion 2 is designed at the open end of the tube-shaped conveyor portion 2. The clamping baffle and the necking structure are configured to straighten and tighten the one-way lifting embedded thread when the tube-shaped conveyor portion 2 is withdrawn from the skin tissue so as to prevent the one-way lifting embedded thread 1 from winding inside the skin tissue. The clamping baffle is secured inside the tube-shaped conveyor portion 2 in the axial direction of tube-shaped conveyor portion 2.

[0123] In the process of using the preceding lifting device to implement the plastic surgery to remove wrinkles, as the tube-shaped conveyor portion 2 is withdrawn from the skin tissue, the clamping baffle disposed at the embedded thread outlet 21 and the necking structure designed at the open end apply friction to the cam bodies 12 and thus straightens and tightens the one-way lifting embedded thread 1 so as to prevent the one-way lifting embedded thread 1 from winding inside the skin tissue, causing an uneven force in the process of lifting, and affecting the lifting effect.

[0124] As declared by the applicant, the preceding are only embodiments of the present application and are not intended to limit the scope of the present application. Apparently, those skilled in the art should know that it is easy for those skilled in the art to conceive modifications or substitutions within the scope of the present application. These modifications or substitutions are within the scope of the present application.