CN210582750U - Suture line and suturing device - Google Patents
Suture line and suturing device Download PDFInfo
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- CN210582750U CN210582750U CN201920504080.2U CN201920504080U CN210582750U CN 210582750 U CN210582750 U CN 210582750U CN 201920504080 U CN201920504080 U CN 201920504080U CN 210582750 U CN210582750 U CN 210582750U
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Abstract
The utility model provides a suture line and a suturing device; the suture thread includes: an elongated body including a first free end and a second free end; a first cam assembly and a second cam assembly disposed about the elongate body, each of the first cam assembly and the second cam assembly including at least one cam; the cam comprises a small end and a large end, and the sectional area of the small end of the cam is smaller than that of the large end of the cam; the direction of the small end of the cam of the first cam assembly faces the direction of the first free end of the elongated body, and the direction of the small end of the cam of the second cam assembly faces the direction of the second free end of the elongated body; the outer wall surface of the cam is provided with at least one meshing reinforcing part; the suture is capable of maintaining a good engagement with the tissue after it has been threaded into the tissue.
Description
Technical Field
The utility model belongs to the field of medical equipment, a stylolite and suturing device are related to.
Background
Due to the age, environment and other factors, the volume of the soft tissues and bones of the face of a human body is shrunk, ligaments begin to relax, the superficial muscle fascia system gradually sags, and the facial surface tissues show the symptoms of sagging, hypoelasticity, wrinkle increase, deep furrow formation and the like under the action of gravity and the relaxation of cheekbone fat pads. And with the increase of age, factors such as the change of hormone level in the body, the loss of collagen and the atrophy of facial glands cause the face to show undesirable characteristic change, namely aging.
With the progress and development of society, the demand of people on beauty is gradually increased, particularly the demand on facial rejuvenation is increased year by year, and the facial rejuvenation is improved and maintained at present by introducing a specially-made silk thread made of absorbable biological materials into shallow soft tissues through a minimally invasive surgery and lifting and resetting relaxed facial soft tissues through excellent lifting and mechanical average distribution effects of the silk thread.
Can be used for lifting different parts of the face in a targeted way and directly acting on the lax skin. In addition, the silk thread is made of biodegradable and absorbable material with good biocompatibility, and after a period of time, the silk thread can stimulate the regeneration of collagen of subcutaneous tissues to form new supporting ligaments and elastic fibers while being degraded and absorbed by facial tissues, so that the facial skin becomes thick and the skin is prevented from aging.
A medical suture of barbed structure is proposed in US5425747 and US 5584859. The suture line of this kind of "barb" structure is by the wide application in medical cosmetic surgery operation, and this kind of suture line is when the puncture is buried subcutaneous tissue, and barb opening direction is opposite with the puncture direction, and the barb receives the oppression of tissue to be in half closed state, and after the puncture, when the suture line thread has the tendency that drops, the barb has the meshing effect to the tissue, and a plurality of barbs synergism, produces huge resistance and prevents that the suture line from droing.
An improved instrument aimed at tissue suturing is proposed in US7582105, which is particularly advantageous during orthopaedic surgery. A suture is provided with a directional cam-type device that can be made to have a one-way or two-way configuration to engage tissue, with nodes being tied back and forth on a wire passing through the cam-type device, a plurality of cam-type devices and nodes being arranged in series on the wire, with one cam in series, and a plurality of nodes being tied back and forth on the first and last cams to define a cam.
Although the medical suture containing the barb structure has a lifting function on loose skin to a certain extent, the engaging function of the cam containing the suture of the cam type device on tissues is obviously superior to that of the barb structure, and the stimulation and the acting time of the cam on the skin are also superior to those of the barb structure. However, the suture cam inevitably has poor engaging ability in tissues, so that relative slippage with the silk thread occurs.
Therefore, it would be desirable to provide a suture that avoids the need for a cam to engage tissue after penetration into the tissue.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a suture line and a suturing device, the suture line can stably fix a cam on the suture line, prevent the relative slippage phenomenon of the cam and the silk thread which occurs when the suture line is punctured into the tissue and the cam starts to engage the tissue, thereby avoiding the problems of cam deviation and uneven stress, and the cam can keep a better engaging relation with the tissue after the suture line penetrates into the tissue; when the suturing device is used for suturing soft tissues, the suture line can be prevented from being lifted at the final puncture position, and the problem that the suture line cannot be lifted due to poor tissue meshing effect can be solved.
In order to achieve the purpose of the utility model, the utility model adopts the following technical proposal:
an object of the utility model is to provide a suture line, the suture line includes: an elongated body including a first free end and a second free end; a first cam assembly and a second cam assembly disposed about the elongate body, each of the first cam assembly and the second cam assembly including at least one cam; the cam comprises a small end and a large end, and the sectional area of the small end of the cam is smaller than that of the large end of the cam; the direction of the small end of the cam of the first cam assembly faces the direction of the first free end of the elongated body, and the direction of the small end of the cam of the second cam assembly faces the direction of the second free end of the elongated body; the cam outer wall surface is provided with at least one engagement reinforcement member.
The utility model provides a stylolite includes long and thin main part, first cam group spare and second cam group spare, can carry out two-way when sewing up and sew up, and the stylolite can play at final puncture position and carry the effect of drawing to play better cosmetic effect.
The sectional area of the middle and small ends of the utility model is smaller than that of the big end of the cam, and the big end can achieve better meshing effect on the tissue after the cam component enters the tissue; the outer wall surface of the cam is provided with an engagement reinforcing part, wherein the engagement reinforcing part can tightly engage with the tissue, and the cam can be prevented from falling off.
In the utility model, towards the tip to the main aspects of the cam, the engagement reinforcement component and the cam outer wall face included angle is α, α is more than or equal to 10 degrees and less than or equal to 45 degrees.
In the present invention, the engagement reinforcing member is a needle.
In the present invention, the engagement reinforcing member is a plurality of stabs.
The utility model discloses in, the awl thorn of the preferred oblique cone shape of meshing reinforcing element, the awl point of awl thorn outwards, the bottom surface and the cam wall contact of awl thorn, wherein the line that the contained angle of meshing reinforcing element and cam outer wall formed for the awl point of oblique cone and oblique cone bottom surface center and the contained angle α that the cam outer wall formed, exemplary if the meshing reinforcing element is the oblique cone of rule, then the contained angle is the contained angle that meshing reinforcing element axis and cam outer wall formed.
The utility model discloses in, α is not more than equal to 45 when 10, then meshing strengthening component and tissue have better meshing ability, when α < 10, the mouth that opens of meshing strengthening component is on the small side, be in the closure state after getting into the tissue, even when the reverse atress that begins of stylolite drops, meshing strengthening component also is difficult to open automatically and mesh the tissue, when α > 45, meshing strengthening component opens a mouthful too big, meshing strengthening component easily produces great resistance when getting into the tissue, can cause the tissue damage.
In the present invention, the large end of the cam is a tooth-shaped structure.
The utility model discloses in, the main aspects one side of cam is dentate structure, can further increase the meshing performance of stylolite and tissue, and cooperation meshing strengthening part combined action further increases the meshing ability of stylolite and tissue, can further avoid droing of cam to can stabilize the accurate fixing of stylolite in organizing, avoid because of the cam drops the effect of carrying of influence stylolite to the tissue of drawing.
In the present invention, the tooth structure includes at least 3 teeth.
The utility model discloses in, when dentate structure contains 3 teeth at least, the meshing ability of cam and tissue can be better.
In the present invention, the wall thickness of the cam is 0.1-0.9mm at its thickest, for example 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm etc., preferably 0.3 mm.
In the present invention, the wall thickness of the cam is at its thinnest 0.05-0.2mm, e.g. 0.05mm, 0.08mm, 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm etc., preferably 0.09 mm.
The sectional area of the middle and small ends of the utility model is smaller than that of the big end of the cam, and the big end can achieve better meshing effect on the tissue after the cam component enters the tissue; the utility model discloses a there is a space between cam main aspects and the tip, and the wall thickness is the thickness that encloses the cam wall in this space, and the wall thickness of cam reduces along tip to main aspects direction, and wherein the easy inseparable meshing tissue of the less main aspects of wall thickness can avoid the cam to drop to the influence is to the effect of drawing of carrying of tissue.
In the present invention, the hollow portion of the cam is formed in a horn shape having the hollow portion.
The utility model discloses tubaeform should understand the outward appearance and accord with the standard of generalized horn shape, follow tip to main aspects sectional area promptly through sharp or the structure that the curve increases gradually, and wherein the curve includes concave curve and convex curve.
The cam also comprises a straight section, the sectional areas of two ends of the straight section are the same and can be cylindrical, and the sectional area of the straight section is smaller than or equal to that of the trumpet-shaped small end. The straight section is preferably integral with the elongate body to minimize any slight relative slippage of the cam and the wire.
The sectional area of the small end or the sectional area of the straight section is smaller, the sectional area of the large end is larger, when the long and thin main body drives the cam assembly to puncture tissues, the single cam enters the tissues in the sequence of the small end and the large end, so that the single cam can conveniently enter the tissues, the damage to the tissues is reduced as far as possible, and in addition, the good meshing effect can be generated on the tissues.
The utility model discloses in, hollow portion's shape is interior tubaeform, interior tubaeform is m along the length of long and thin main part direction, the length of cam along long and thin main part direction is s, 1/4s is less than or equal to m and is less than or equal to s.
The utility model discloses in, the straight section also contains a cavity inner cylinder (also called interior straight section), and the length of interior straight section along long and thin main part direction is l, the length of cam along long and thin main part direction is s, 1/3s is less than or equal to l and is less than or equal to 2/3 s.
In the present invention, the length of s is 1.5-3mm, e.g. 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.8mm, 3mm etc., preferably 2.5mm, i.e. the length of l is 0.8-1.6mm, e.g. 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm etc.
In the utility model, the hollow part is in the shape of a horn (the utility model is called as an inner horn), the hollow part also comprises a flat straight section (the utility model is called as an inner flat straight section), the inner flat straight section is in the shape of a cylinder, in order to ensure that the slender main body directly bears the force on the inner flat straight section after the puncture is completed, the linear stress of the slender main body on the circumferential structures of a large section and a small section is avoided, the length of the inner flat straight section is l, the length of the cam along the direction of the slender main body is s, and l is not less than 1/3s and not more than 2/3 s; when the length l of the inner flat section is less than 1/3s, the relieving effect of the inner flat section on the linear stress is not obvious; when the length l of the inner flat section is more than 2/3s, the proportion of the inner flat section in the length of the cam is too high, and the meshing effect of the cam on tissues is influenced.
In the utility model, the horn angle of the horn shape in the hollow part is delta, wherein 20 degrees is larger than or equal to delta and is smaller than or equal to 120 degrees.
The utility model can adjust the distance of the flat section in the hollow part by controlling the horn angle of the horn-shaped opening section of the hollow part, thereby better controlling the meshing effect, when the horn angle delta is less than 20 degrees, the opening of the opening section is smaller, the diameter difference between the big end and the small end is smaller, after the tissue is implanted, the big end can not be tightly meshed with the tissue, the phenomenon of cam sliding can easily occur, and the lifting operation is failed; when delta is more than 120 degrees, the opening of the opening section is larger, the diameter of the large end is overlarge, and the bearing resistance is larger in the process of implanting tissues, so that the tissues are easy to hurt.
In the present invention, the first cam assembly and the second cam assembly are symmetrically disposed on opposite sides of a midpoint of the elongated body.
In the present invention, the number of cams of the first cam module and the second cam module is the same.
In the present invention, the distance between the adjacent cams in the first cam module and the second cam module is the same.
In the present invention, the number of cams of the first cam module is 4.
In the present invention, the distance between adjacent cams in the first cam assembly is 3-10mm, such as 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.
In the present invention, the number of cams of the second cam module is 4.
In the present invention, the distance between adjacent cams in the second cam assembly is 3-10mm, such as 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.
In the present invention, the cam is limited by the limiting member with respect to the elongated body.
In the present invention, the position-limiting part is a knot.
The utility model discloses in, the knot is greater than the aperture of cam tip in the diameter of the long and thin main part length direction of perpendicular to.
In the present invention, the cam is fixed to the elongated body by heat-sealing.
The utility model discloses in, cam and long and thin main part carry on spacingly through the locating part, can guarantee the stability of long and thin main part and cam on the one hand, avoid appearing relative slip, on the other hand lies in and gets into after organizing, in case after the rigidity of cam, long and thin main part also can fix a position fixed position, plays better lifting and draws the effect.
In the present invention, the elongated body is a single stranded wire.
In the present invention, the elongated body may be prepared from existing materials according to existing manufacturing methods, exemplary materials being listed below:
the elongated body and the cam assembly are both degradable materials.
The degradable material comprises a synthetic degradable high polymer material and/or a natural degradable high polymer material.
The synthetic degradable high polymer material comprises any one or the combination of at least two of polylactic acid, L-polylactic acid, DL-polylactic acid, poly (lactide-co-glycolide), polycaprolactone, poly (amyl hydroxybutyrate), poly (acetylglutamate), poly (n-ester), polyethylene oxide/polybutylene copolymer or poly (lactide-co-caprolactone).
The natural degradable high molecular material comprises any one or the combination of at least two of collagen, gelatin, chitosan, hyaluronic acid, sodium alginate and agarose.
A second object of the present invention is to provide a suturing device, which comprises a suture line and a metal needle body at both ends of the suture line.
The utility model discloses well suturing device can carry out two-way sewing up when organizing to sew up, can play the effect of drawing after sewing up to reach better cosmetic or treatment.
The utility model discloses well suturing device is applicable to the wound closure, and the tissue is taut, and the tissue supports, hangs and the fixed process.
Compared with the prior art, the utility model discloses following beneficial effect has:
the cam and the tissue in the suture line have better engaging capacity, the suture line can be stably and precisely fixed on the tissue, and the cam can be stably fixed on the suture line, so that the cam and the silk thread which appear in the process that the suture line is punctured to enter the tissue and the cam starts to engage the tissue are prevented from relatively sliding to a larger extent, and the problems of cam deviation and uneven stress are avoided; when the suturing device is used for suturing soft tissues, the suture line can be prevented from being lifted and stressed unevenly due to cam deviation when the suture line is lifted at the final puncture position.
Drawings
FIG. 1 is a schematic view of a suture in an embodiment;
FIG. 2 is a front view of a cam assembly of an embodiment;
FIG. 3 is a front view of a cam in the cam assembly of FIG. 2;
FIG. 4 is a perspective view of a cam structure in embodiment 1;
FIG. 5 is a perspective view of another angle of the cam structure in embodiment 1;
FIG. 6 is a perspective view of a cam structure in embodiment 2;
FIG. 7 is a perspective view of another angle of the cam structure in embodiment 2;
FIG. 8 is a perspective view of a cam structure in embodiment 3;
FIG. 9 is a perspective view of another angle of the cam structure of embodiment 3;
FIG. 10 is a perspective view of a cam structure according to embodiment 4;
FIG. 11 is a perspective view of another angle of the cam structure of embodiment 4;
wherein 1 is an elongated body, 2 is a first free end, 3 is a second free end, 4 is a first cam assembly, 5 is a second cam assembly, 6 is a cam, 7 is a small end, 8 is a large end, 9 is an engagement reinforcement member, and 10 is a tooth structure.
Detailed Description
The technical solution of the present invention will be further explained by the following embodiments. It should be understood by those skilled in the art that the described embodiments are merely provided to assist in understanding the present invention and should not be construed as specifically limiting the present invention.
The present embodiment provides a suture as shown in fig. 1 and 2, comprising an elongated body 1, wherein the elongated body 1 comprises a first free end 2 and a second free end 3, a first cam assembly 4 and a second cam assembly 5 which are sleeved on the elongated body 1, wherein the first cam assembly 4 and the second cam assembly 5 each comprise at least one cam 6, and in connection with fig. 3, the cam 6 comprises a small end 7 and a large end 8, the sectional area of the small end 7 of the cam 6 is smaller than that of the large end 8 of the cam 6, the small end 7 of the cam of the first cam assembly 4 is directed towards the first free end 2 of the elongated body 1, the small end 7 of the cam of the second cam assembly 5 is directed towards the second free end 3 of the elongated body 1, and the outer wall surface of the cam 6 is provided with an engagement reinforcing member 9, and the engagement reinforcing member 9 is arranged along the small end 7 to the large end 8 direction of the cam 6, as can be seen from fig. 3, the engagement reinforcing member 9 and the outer wall surface of the cam 6 are at an angle of α, α degrees.
In the embodiment, the elongated main body is preferably a single-stranded wire, the single-stranded wire has a smaller diameter and better toughness, so that the human tissue suture is convenient to carry out, wherein the diameter, the toughness, the number of layers and other specific conditions of the wire are adjusted by a person skilled in the art according to actual needs; the elongated main body, the first cam component and the second cam component are all biodegradable materials, and the selectable biodegradable materials comprise any one or a combination of at least two of polylactic acid, L-polylactic acid, DL-polylactic acid, poly (lactide-co-glycolide), polycaprolactone, poly (amyl hydroxybutyrate), poly (acetylglutamate), poly (n-ester), polyethylene oxide/polybutylene copolymer, poly (lactide-co-caprolactone) copolymer collagen, gelatin, chitosan, hyaluronic acid, sodium alginate or agarose, and specifically which material can be adjusted by a person skilled in the art according to actual needs; in the embodiment, the suture is left in the human body after the suture is finished, and the biodegradable material can be degraded in the human body without side effect on the human body.
The number of cams in the first cam assembly and the second cam assembly in the present embodiment is at least 1, preferably 4, wherein the number of cams is adjusted by those skilled in the art according to actual needs; the distance between adjacent cams in the first cam component and the second cam component is 3-10mm, the specific arrangement can be adjusted by a person skilled in the art according to actual needs, and the first cam component and the second cam component are symmetrically distributed on two sides of the middle point of the elongated main body, so that the suture can enter tissues and can be well meshed with the cams during suturing.
In this embodiment, the cam comprises a small end and a large end, wherein the end with a small cross-sectional area is called the small end, the end with a large cross-sectional area is called the large end, the small end of the first cam assembly faces the first free end of the elongated body, and the small end of the second cam assembly faces the second free end of the elongated body, so that during the bidirectional puncturing process, the small end of the cam assembly faces the free end of the elongated body, the puncturing is facilitated, and the tissue is not damaged greatly; the sectional area of the small end of the cam is smaller than that of the large end, wherein the sectional areas of the small end and the large end can be adjusted by a person skilled in the art according to actual needs.
In the embodiment, an included angle between the engagement reinforcing member and the outer wall surface of the cam is α towards the direction from the small end to the large end of the cam, wherein an included angle α between the engagement reinforcing member and the outer wall surface of the cam is formed by a connecting line formed by a cone tip of an oblique cone body and the center of the bottom surface of the oblique cone body and the outer wall surface of the cam, for example, if the engagement reinforcing member is a regular oblique cone body, the included angle is formed by a central axis of the engagement reinforcing member and the outer wall surface of the cam, wherein the included angle is more than or equal to α and less than or equal to 45 degrees, the engagement reinforcing member and the tissue have good engagement capacity, the selection of the specific value α can be adjusted by a person skilled in the art according to actual needs, when α and less than 10 degrees, the opening of the engagement reinforcing member is small, the engagement reinforcing member is in a closed state after entering the tissue, even if the suture line is reversely stressed and falls off, the engagement reinforcing member is difficult to automatically open and engage the tissue, and when α and the opening of the engagement.
In the present embodiment, the engagement reinforcing member is a plurality of barbs for penetrating into the tissue to engage with the tissue, and preferably, the engagement reinforcing member is a tapered barb, and the selection of the engagement reinforcing member and the density setting of the engagement reinforcing member on the outer wall surface of the cam can be adjusted by those skilled in the art according to actual needs.
The utility model discloses in, the main aspects one side of preferred cam is dentate structure, dentate structure contains 3 teeth at least, can further increase the meshing performance of stylolite and tissue, cooperation meshing strengthening part combined action, further increase the meshing ability of stylolite and tissue, can further avoid droing of cam to can stabilize the accurate fixing in the tissue with the stylolite, avoid influencing the carrying and pulling effect of stylolite to the tissue because of the cam drops, wherein dentate structure number the selection technical personnel in the field can adjust according to actual need.
Example 1
In this embodiment 1, as shown in fig. 4 and 5, the shape of the cam is a hollow horn shape, that is, the sectional area of the cam in the direction from the small end 7 to the large end 8 is gradually increased through a straight line, the outer wall surface of the cam is provided with the engagement reinforcing member 9, the engagement reinforcing member 9 is in the shape of an oblique cone, an included angle between the central axis of the engagement reinforcing member 9 and the outer wall surface of the cam is 45 ° in the direction from the small end 7 to the large end 8, the large end side of the cam is the tooth-shaped structure 10, and the number of the tooth-shaped structures 10 is 9.
When the stylolite pierces the tissue in this embodiment, the cam is because from tip to main aspects sectional area crescent, be convenient for get into inside the tissue, and can reduce the damage to the tissue, and the cam is in the closed condition under the effect of force when getting into the tissue, when the puncture finishes the back, carries the stylolite, and the cam structure begins reverse atress, and the dentate structure of cam main aspects one side begins to mesh the tissue, and the barb on the cam also opens the meshing tissue under the effect of force to reach better meshing effect.
Example 2
In the present embodiment, as shown in fig. 6 and 7, the shape of the cam is a hollow horn shape, that is, the sectional area of the cam in the direction from the small end 7 to the large end 8 is gradually increased through a straight line, the outer wall surface of the cam is provided with the engagement reinforcing member 9, the engagement reinforcing member 9 is in the shape of an oblique cone, the included angle between the engagement reinforcing member 9 and the outer wall surface of the cam is 30 ° in the direction from the small end 7 to the large end 8, the large end side of the cam is the tooth-shaped structure 10, and the number of the tooth-shaped structures 10 is 4.
When the stylolite pierces the tissue in this embodiment, the cam is because from tip to main aspects sectional area crescent, be convenient for get into inside the tissue, and can reduce the damage to the tissue, and the cam is in the closed condition under the effect of force when getting into the tissue, after the puncture finishes, carry the cord line, the cam structure begins reverse atress, the angle of the cusp of the dentate structure of cam main aspects one side is the acute angle, have stronger meshing ability when meshing the tissue, and meshing strengthening component on the cam opens the meshing tissue under the effect of force, thereby reach better meshing effect.
Example 3
In the present embodiment, as shown in fig. 8 and 9, the cam is in a hollow trumpet shape, that is, the sectional area of the cam in the direction from the small end 7 to the large end 8 is gradually increased through a convex curve, the engagement reinforcing member 9 is arranged on the outer wall surface of the cam, the engagement reinforcing member 9 is in a shape of an oblique cone, the included angle formed by the engagement reinforcing member 9 and the tangent line of the outer wall surface of the cam at the intersection with the central axis of the engagement reinforcing member 9 is 10 ° in the direction from the small end 7 to the large end 8, the large end side of the cam is provided with the tooth-shaped structure 10, and the number of the tooth-shaped structures 10 is 5.
When the stylolite got into the tissue suture in this embodiment, tubaeform from tip to main aspects sectional area through the form crescent of convex curve, can further reduce its degree of difficulty that gets into the tissue, thereby further reduce the damage to the tissue, and the cam is when getting into the tissue, be in the closure state under the effect of force, can not constitute the damage to the tissue when sewing up, after the puncture finishes, carry the stay cord line, the cam structure begins reverse atress, the dentate structure and the tissue of cam main aspects one side have stronger engaging ability, and the meshing tissue is opened to the meshing reinforcing component on the cam under the effect of force, thereby reach better meshing effect.
Example 4
In this embodiment, as shown in fig. 10 and 11, the cam is shaped like a triangular pyramid having a hollow portion, the sectional area from the small end to the large end is gradually increased in a straight line manner, the engagement reinforcing member 9 is provided on the outer wall surface of the cam, the engagement reinforcing member 9 is shaped like an oblique cone, and the angle between the engagement reinforcing member 9 and the outer wall surface of the cam is 25 ° in the direction from the small end 7 to the large end 8.
When the stylolite pierces the tissue in this embodiment, the cam is because from tip to main aspects sectional area crescent, be convenient for get into inside the tissue, and can reduce the damage to the tissue, and the cam is in the closure state under the effect of force when getting into the tissue, when the puncture finishes, carry the stylolite, the cam structure begins reverse atress, the most advanced of the three angles of the cam main aspects of triangle conical shape easily meshes the organizational structure, and the barb on the cam also opens the meshing tissue under the effect of force, thereby reach better meshing effect.
In the embodiment, a space exists between the big end and the small end of the cam, and the wall thickness refers to the thickness of the cam wall surrounding the space, the wall thicknesses of the small end and the big end of the cam in the embodiment can be the same or different, preferably, the wall thickness of the small end of the cam is greater than that of the big end, so that the big end with the lower wall thickness can be easily and tightly engaged with the tissue, and the falling of the cam can be avoided, thereby influencing the lifting action of the suture line on the tissue; the cam is preferably in a structure that the diameter and the sectional area of a small end of the flat section and the trumpet shape are equal, the sectional area of the trumpet shape is gradually increased from the small end to a large end in a straight line or curve mode, and the curve comprises a concave curve and a convex curve; the wall thickness of the trumpet shape is gradually reduced along the direction from the small end to the big end, the wall thickness of the cam is 0.1-0.9mm at the thickest and 0.05-0.2mm at the thinnest; the hollow part comprises an inner trumpet shape, the flat straight section also comprises a hollow inner cylinder (inner flat straight section), the length of the inner flat straight section along the direction of the slender main body 1 is l, the length of the cam along the direction of the slender main body is s, l satisfies the condition that 1/3s is not less than l is not more than 2/3s, and when l is less than 1/3s, the relieving effect of the inner flat straight section on linear stress is not obvious; when l is more than 2/3s, the proportion of the inner flat section occupying the length of the cam is too high, and the meshing effect of the cam on tissues is influenced; the sectional area of the inner horn shape from the small end to the large end is gradually increased in a linear or curved mode, wherein the curve comprises a concave curve and a convex curve, a horn angle delta is formed by the linear or curved tangents on the two sides of the small end of the inner horn shape, delta is more than or equal to 20 degrees and less than or equal to 120 degrees, the distance of the straight section in the hollow part is adjusted by controlling the horn angle of the horn-shaped opening section of the hollow part, so that the meshing effect is better controlled, when the horn angle delta is less than 20 degrees, the opening of the opening section is smaller, the diameters of the large end and the small end are smaller, after the tissue is implanted, the large end cannot be tightly meshed with the tissue, the phenomenon of cam slipping is easy to occur, and the lifting operation is failed; when delta is more than 120 degrees, the opening of the opening section is larger, the diameter of the large end is overlarge, and the bearing resistance is larger in the process of implanting tissues, so that the tissues are easy to hurt.
In the embodiment, the elongated main body, the first cam assembly and the second cam assembly can be limited by the limiting piece, so that the cam assembly and the silk thread are prevented from sliding relatively, the cam is deviated, and the meshing effect of human tissues and the cam is influenced; the limiting parts can be knots or other degradable limiting materials, the limiting parts are at least ensured to be arranged on two sides of each cam, and the number of the limiting parts is at least two more than that of the cams so as to fix the cams better; the cross section area of the limiting piece in the direction perpendicular to the elongated main body is larger than the aperture of the small end of the cam, so that the limiting piece is prevented from penetrating through the cam to influence the limiting effect; the limiting part is specifically selected from a knot or other degradable limiting materials, or the specific selection value of the diameter of the limiting part, and the limiting part can be adjusted by a person skilled in the art according to actual needs; in this embodiment, when the hollow structure of the cam is in a horn shape, the elongated body and the cam are preferably fixed together by heat sealing, so that relative movement between the cam and the wire can be further prevented from affecting the engagement effect.
The present embodiment also provides a suture device including the suture thread described above and a metal needle body located at both ends of the suture thread.
The utility model discloses in through set up metal system needle body at stylolite both ends, can carry out two-way when sewing up and sew up, sew up after, carry and draw long and thin main part and can reach better carrying and draw the effect to be used for the tissue to sew up.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (23)
1. A suture, comprising:
an elongated body (1) comprising a first free end (2) and a second free end (3);
a first cam assembly (4) and a second cam assembly (5) fitted over the elongate body (1), the first cam assembly (4) and the second cam assembly (5) each comprising at least one cam (6);
the cam (6) comprises a small end (7) and a large end (8), and the sectional area of the small end (7) of the cam (6) is smaller than that of the large end (8) of the cam (6);
the direction of the small end (7) of the cam of the first cam component (4) is towards the direction of the first free end (2) of the slender body (1), and the direction of the small end (7) of the cam of the second cam component (5) is towards the direction of the second free end (3) of the slender body (1);
the outer wall surface of the cam (6) is provided with at least one engagement reinforcing part (9).
2. Suture as claimed in claim 1, characterized in that the angle of engagement reinforcement (9) with the outer wall of the cam (6) is α, 10 ° ≦ α ≦ 45 ° in the direction from the small end (7) to the large end (8) of the cam (6).
3. Suture according to claim 1, characterized in that said engagement reinforcement (9) is a needle.
4. Suture as claimed in claim 1, characterized in that said engagement reinforcement means (9) are a plurality of spikes.
5. Suture as claimed in claim 1, characterized in that the cam (6) is flanked on the large end (8) by a tooth-like structure (10).
6. Suture according to claim 5, characterized in that said tooth-like structure (10) comprises at least 3 teeth.
7. Suture according to claim 1 or 2, characterized in that the wall thickness of the cam (6) is 0.1-0.9mm at the most.
8. Suture according to claim 1 or 2, characterized in that the wall thickness of the cam (6) is 0.3mm at the most.
9. Suture according to claim 1 or 2, characterized in that the wall thickness of the cam (6) is 0.05-0.2mm at the thinnest.
10. Suture according to claim 1 or 2, characterized in that the wall thickness of the cam (6) is 0.09mm at the thinnest.
11. Suture according to claim 1, characterized in that the shape of the cam (6) is a trumpet with a hollow.
12. Suture as claimed in claim 1, characterized in that said cam (6) further comprises a straight section.
13. Suture according to claim 11, characterized in that said hollow portion has the shape of an internal trumpet with a length m in the direction of the elongated body (1), said cam (6) has a length s in the direction of the elongated body (1), said 1/4s ≦ m ≦ s.
14. Suture according to claim 11, characterized in that said hollow portion further comprises an inner flat section having a length l in the direction of the elongated body (1), said cam (6) having a length s in the direction of the elongated body (1), said 1/3s ≦ l ≦ 2/3 s.
15. The suture of claim 13, wherein the horn angle of the inner horn is δ, wherein 20 ° ≦ δ ≦ 120 °.
16. Suture as claimed in claim 1, characterized in that said first cam member (4) and second cam member (5) are symmetrically distributed on either side of the midpoint of the elongated body (1).
17. Suture as claimed in claim 1, characterized in that said first cam assembly (4) and second cam assembly (5) have the same number of cams.
18. Suture as claimed in claim 1, characterized in that the distance between adjacent cams (6) in the first cam assembly (4) and the second cam assembly (5) is the same.
19. Suture as claimed in claim 1, characterized in that the number of cams of said first cam assembly (4) is 4.
20. Suture as claimed in claim 1, characterized in that the distance between adjacent cams (6) in the first cam assembly (4) is 3-10 mm.
21. Suture as claimed in claim 1, characterized in that the number of cams of the second cam assembly (5) is 4.
22. Suture as claimed in claim 1, characterized in that the distance between adjacent cams (6) in the second cam assembly (5) is 3-10 mm.
23. A suture device comprising the suture thread according to any one of claims 1 to 22 and a metal needle body provided at both ends of the suture thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920504080.2U CN210582750U (en) | 2019-04-15 | 2019-04-15 | Suture line and suturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920504080.2U CN210582750U (en) | 2019-04-15 | 2019-04-15 | Suture line and suturing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210582750U true CN210582750U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920504080.2U Active CN210582750U (en) | 2019-04-15 | 2019-04-15 | Suture line and suturing device |
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| Country | Link |
|---|---|
| CN (1) | CN210582750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109864834A (en) * | 2019-04-15 | 2019-06-11 | 易浦润（上海）生物技术有限公司 | A kind of suture, stitching devices and its application |
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2019
- 2019-04-15 CN CN201920504080.2U patent/CN210582750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109864834A (en) * | 2019-04-15 | 2019-06-11 | 易浦润（上海）生物技术有限公司 | A kind of suture, stitching devices and its application |
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