CN215018101U - Auxiliary puncture needle - Google Patents

Abstract

The utility model provides an auxiliary puncture needle, its grip handle, needle body and fixed block that includes coaxial setting, the introducing port has been seted up to the near-end of grip handle, just follow in the grip handle the axial of grip handle is provided with the guide chamber, the near-end of needle body with the distal end of grip handle is connected, just the distal end of needle body is most advanced, be close to on the needle body the export has been seted up to the most advanced, follow in the needle body the axial of needle body is provided with accepts the chamber, the introducing port the guide chamber accept the chamber and the export communicates in proper order, fixed block slidable ground sets up on the needle body, just the fixed block can the most advanced department is followed take off or install extremely on the needle body. The utility model discloses an in supplementary pjncture needle can be used to the supplementary string of carrying implantation organism tissue, and can be so that carry the first free end of string of pulling and stay in organism tissue to can reduce the postoperative wound.

Description

Auxiliary puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to auxiliary puncture needle.

Background

Factors such as age and environment can cause atrophy of the soft tissues and skeletal volume of the face, gradual relaxation of ligaments, and gradual sagging of the superficial muscle fascial system. The facial surface tissues show sagging, hypoelasticity, increased wrinkles and deepened furrows due to the relaxation of cheekbone fat pads and the action of gravity.

With the progress and development of society, the demand of people for beauty is gradually increasing, and particularly, the demand for the youth of faces is increasing year by year. At present, the facial rejuvenation is improved and kept by introducing a specially-made pulling wire made of a bioabsorbable material into the superficial soft tissue through a minimally invasive surgery, and pulling and resetting the loose facial soft tissue through the excellent pulling and mechanical average distribution effects of the pulling wire.

CN103251433A discloses a suture comprising an elongated flexible body and a plurality of tissue engaging elements. The elongated flexible body is a multi-strand braided or woven structure having a first end and a second end. Each tissue-engaging element defines an aperture therethrough disposed through the elongated flexible body. A plurality of knots, each larger than the aperture, are disposed on the elongated flexible body to retain the serially arranged tissue-engaging elements on the elongated flexible body. The tissue-engaging element defines a narrow end and a flared end that cooperate with the open nature of the interior of the tissue-engaging element to provide tissue-engaging characteristics such that the suture, when implanted, can support and secure tissue to provide facial lift and contouring.

However, the provision of the knot increases the stress on the elongate flexible body at the knot, and causes the elongate flexible body to deform and break at the knot. Particularly, when the slender flexible body is made of degradable materials, the slender flexible body is easy to degrade at the knotted part in the sterilization process, so that the overall strength of the slender flexible body is reduced, and the product cannot meet the use requirement after the sterilization is finished. In addition, there is no assurance that tissue can enter the interior of the tissue-engaging element through the flared end, i.e., the interior of the tissue-engaging element may not provide the engagement feature, thereby greatly reducing the lifting capacity of the suture. In addition, the first end of suture line is provided with straight body, and the second end is provided with the bending body, and after accomplishing the implantation, can form two at least wounds, is unfavorable for facial aesthetic property.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical problem, an object of the present invention is to provide an auxiliary puncture needle, which can reduce the wound formed on the surface of the skin during the operation of pulling and inserting the pull wire, and is favorable for improving the aesthetic property after the operation.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an auxiliary puncture needle, auxiliary puncture needle includes grip handle, needle body and the fixed block of coaxial setting, the introducing port has been seted up to grip handle's near-end, just follow in the grip handle the axial of grip handle is provided with the guide chamber, the near-end of needle body with grip handle's distal end is connected, just the distal end of needle body is most advanced, be close to on the needle body the export of leading has been seted up to the most advanced, the internal edge of needle the axial of needle body is provided with accepts the chamber, the introducing port the guide chamber accept the chamber and the export of leading communicates in proper order, fixed block slidable ground sets up on the needle body, just the fixed block can the most advanced department is followed take off or install extremely on the needle body.

In one embodiment, the grip handle includes a grip portion and a connecting portion connected to each other, the introduction port is provided on a proximal end face of the grip portion, the needle body is connected to a distal end of the connecting portion, an outer diameter of the grip portion is larger than an outer diameter of the connecting portion, and an axial length of the grip portion is greater than an axial length of the connecting portion.

In one embodiment, the outer surface of the holding part is provided with anti-skid lines.

In one embodiment, an outer surface portion of the grip portion is recessed inward in a radial direction of the grip portion.

In one embodiment, a first cavity is formed in the holding portion along the axial direction of the holding portion, a second cavity is formed in the connecting portion along the axial direction of the connecting portion, the first cavity and the second cavity are matched to form the guide cavity, and the radial size of the first cavity is larger than that of the second cavity.

In one embodiment, the outlet is formed along the axial direction of the needle body and penetrates through the tip.

In one embodiment, the auxiliary puncture needle further comprises a protective sleeve, and the protective sleeve is detachably sleeved on the needle body.

In one embodiment, the inner diameter of the shield is larger than the outer diameter of the needle body, and the axial length of the shield is greater than the axial length of the needle body.

In one embodiment, the proximal end of the protective sleeve is removably engaged with the attachment portion.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses an auxiliary puncture needle is assisted as appurtenance to carry and is acted as during the line implantation organism tissue. After the implantation is completed, the needle body of the auxiliary puncture needle can be withdrawn from the puncture point to the outside of the skin, and the first free end of the lifting wire is remained in the organism tissue, so that the wound can be reduced, the attractiveness of the lifting area to be treated after the operation is facilitated, and the quick recovery after the operation is facilitated.

Drawings

Fig. 1A is a schematic structural view of the pulling wire of the present invention.

Fig. 1B is a schematic structural view of the pulling wire shown in fig. 1A after the hollow knot is tightened.

Fig. 2A is a cross-sectional view of a uniform wall thickness tissue engaging element of the present invention (increasing in outer diameter through a straight line).

Fig. 2B is a cross-sectional view of another uniform wall thickness tissue engaging element of the present invention (with the outer diameter increasing through the convex curve).

Fig. 2C is a cross-sectional view of yet another tissue-engaging element of the present invention having a uniform wall thickness (the outer diameter increasing through the concave curve).

Fig. 3A is a cross-sectional view of a tissue-engaging element of the present invention having a tapered wall thickness (increasing in outer diameter through a straight line).

Fig. 3B is a cross-sectional view of another tissue-engaging element of the present invention having a decreasing wall thickness (increasing outer diameter through a convex curve).

Fig. 3C is a cross-sectional view of yet another tissue-engaging element of the present invention having a decreasing wall thickness (increasing outer diameter through a concave curve).

Fig. 4 is a cross-sectional view of a tissue engaging element of the present invention provided with an annular projection.

Fig. 5A is a schematic drawing of a tissue engaging element according to the present invention.

Fig. 5B is a schematic drawing of another tissue engaging element according to the present invention.

Fig. 5C is a schematic drawing of a further tissue-engaging element according to the present invention.

FIG. 6A is a schematic view of the tissue-engaging element of FIG. 5A after compression by body tissue.

FIG. 6B is a schematic view of the tissue-engaging element of FIG. 5B after compression by body tissue.

Fig. 7A is a schematic structural view of the auxiliary puncture needle of the present invention.

Fig. 7B is a schematic structural view of the auxiliary puncture needle shown in fig. 7A after the protective cover is removed.

Fig. 7C is a cross-sectional view of the auxiliary puncture needle shown in fig. 7A with the protective sheath and the fixation block removed.

Reference numerals:

the body 1, the first free end 11, the second free end 12, the tissue engagement element 21, the small end 211, the large end 212, the wall body 213, the first through hole 214, the second through hole 215, the inner cavity 216, the annular protrusion 217, the guide wall 218, the compensation wall 219, the limiting member 22, the introduction needle 3, the connection end 31, the puncture end 32, the grip handle 41, the grip 411, the connection portion 412, the introduction port 413, the guide cavity 414, the needle body 42, the tip 421, the introduction port 422, the accommodation cavity 423, the fixing block 43, and the protection cover 44.

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 specific embodiments described are merely to aid in understanding the present invention and should not be considered as specific limitations of the present invention.

Referring to fig. 1A and 1B, the present invention provides a lifting cord, which includes a slender and flexible cord body 1 and a plurality of tissue engagement elements 21 disposed on the cord body 1 at intervals. The wire body 1 has a first free end 11 and a second free end 12 which are oppositely arranged. Tissue-engaging element 21 has oppositely disposed small end 211 and large end 212, with small end 211 having an outer diameter smaller than that of large end 212, and small ends 211 both facing first free end 11.

When the implant is carried out, the first free end 11 firstly penetrates into the organism tissue through an auxiliary tool at a pre-confirmed puncture point and advances in the organism tissue along a preset direction; the tissue engaging elements 21 are driven by the first free end 11 to sequentially penetrate into the body tissue in the sequence of the first small end 211 and the second large end 212 and advance along the preset direction, the tissue engaging elements 21 can conveniently enter the body tissue according to the sequence of the first small end 211 and the second large end 212, and the damage to the body tissue can be reduced as much as possible. After the implantation is completed, the auxiliary tool is removed, the second free end 12 is left outside the body tissue, the first free end 11 is pressed, and the second free end 12 is pulled in a direction opposite to the preset direction, so that the large end 212 of the tissue engagement element 21 is engaged with the body tissue, specifically, the large end 212 hooks the body tissue, and the body tissue is lifted, supported and fixed. Therefore, the lifting line of the utility model can lift, shape and remove wrinkles on loose skin and tissues of face, chin, neck, chest, abdomen, buttocks, vagina and the like, and has the functions of beauty treatment and repair.

It should be noted that the first free end 11 may be left in the body tissue after penetrating into the body tissue, or may be penetrated out of the body tissue after being advanced to a predetermined position. To reduce trauma, the first free end 11 is preferably left in the body tissue after it has been penetrated into the body tissue. In addition, after the second free end 12 is pulled in the direction opposite to the preset direction, in order to prevent the pulling-up wire from slipping out in the body tissue, the pulling-up wire needs to be anchored by knotting or installing an anchoring member to the second free end 12.

Line body 1 and tissue engagement element 21 all adopt degradable material to prepare, therefore, the utility model discloses a carry the stay wire and can the normal position degradation, then by the discharge external or by the organism absorption to can stimulate the organism to generate collagen, remold the shape, compact skin increases skin elasticity, improves the feel.

The degradable material comprises any one or the combination of at least two of polylactic acid, polyglycolic acid, polycaprolactone, polydioxanone and lactide-glycolide copolymer.

The material of the wire body 1 and the material of the tissue-engaging element 21 may be the same or different.

In one embodiment, the wire body 1 and the tissue-engaging element 21 are both made of polylactic acid; in another embodiment, both the wire body 1 and the tissue engaging element 21 are made of a lactide-glycolide copolymer; in yet another embodiment, one of the wire body 1 and the tissue engaging element 21 is made of polylactic acid and the other is made of a lactide-glycolide copolymer, i.e. the wire body 1 is made of polylactic acid and the tissue engaging element 21 is made of a lactide-glycolide copolymer, or alternatively, the wire body 1 is made of a lactide-glycolide copolymer and the tissue engaging element 21 is made of polylactic acid.

Compared with other degradable materials, the polylactic acid and the lactide-glycolide copolymer have slower degradation rate, thereby achieving the effect of long-acting maintenance. Wherein the polylactic acid may be L-polylactic acid, and the lactide-glycolide copolymer has a lactide-glycolide mass ratio of (70-90) to (10-30), for example, 70:30, 80:20, 82:18, 90:10, but not limited to the recited values, and other values not recited in this range are also applicable.

The wire body 1 may be a single wire, or may be a braided or woven structure formed of a plurality of wires. The woven or woven structure is beneficial to the growth of organism tissues and the entering of organism tissues into gaps among silk threads, thereby increasing the stability of the pulling thread in the organism tissues after being implanted, preventing the pulling thread from randomly sliding and shifting and being beneficial to enhancing the effects of pulling, supporting and fixing the organism tissues by the pulling thread.

The length of the wire body 1 is 50mm-500 mm. The outer diameter of the wire body 1 is 0.02mm-1.08 mm. The utility model discloses a carry of acting as go-between mainly used face and draw. The force value of the facial tissue for overcoming the gravity is 1N, the muscle lifting force required by facial expression is 3N-5N, and therefore the line body 1 needs to have certain tensile strength, can bear the blocking force of the body tissue during implantation, and can bear the lifting force for lifting the face after implantation. Thereby, the outer diameter of the wire body 1 cannot be too small, otherwise the tensile strength is too low and it is not easy to handle. However, the outer diameter of the wire body 1 cannot be too large, and when the outer diameter of the wire body 1 is too large, the damaged passage in the body tissue after the pull-up wire is implanted is too large, which is not favorable for repairing the body tissue, and also affects the pull-up effect of the tissue engaging element 21 on the body tissue.

The number N of tissue-engaging elements 21 is 2-24, preferably 9, 11, 12 or 14.

Tissue-engaging elements 21 are disposed at equally spaced intervals, and spacing H is 0.5mm to 15mm, preferably 5mm or 8 mm. H cannot be too large, and when H > 15mm, the number of tissue-engaging elements 21 in the region to be pulled is too small, which tends to cause uneven pulling; h cannot be too small, and when H is less than 0.5mm, the body tissue entering between two adjacent tissue engagement elements 21 is too small, the tissue engagement elements 21 are easy to slip off, and the body tissue can not be lifted.

Referring to FIGS. 2A-2C and 3A-3C, the outer profile of tissue-engaging element 21 is flared such that the outer diameter of tissue-engaging element 21 increases gradually through a straight line, a concave curve, or a convex curve in the direction from small end 211 to large end 212.

Tissue-engaging element 21 has a length in the axial direction of 0.5mm to 4 mm. The length of tissue-engaging element 21 must not be too short or it cannot be machined; the length of the tissue-engaging elements 21 cannot be too long, otherwise, too few tissue-engaging elements 21 would cause poor lifting in the area to be lifted.

The outer diameter of the small end 211 is 0.05mm-1.2 mm. The outer diameter of the small end 211 cannot be too large, otherwise, the small end 211 cannot pass through the puncture easily, and in addition, the small end 211 needs to be arranged in a matching way with the wire body 1, so the small end cannot be too small.

The outer diameter of the large end 212 is 0.2mm-1.5 mm. The path through which tissue-engaging element 21 travels within the body tissue cannot be too large to affect recovery of the body tissue. Based on this, the outer diameter of the large end 212 cannot be too large. In addition, if the outer diameter of the large end 212 is too large, a bulge may be formed on the skin surface, which may affect the appearance. However, the outer diameter of the large end 212 cannot be too small, and if the outer diameter of the large end 212 is too small, the large end 212 cannot be well engaged with body tissues, and thus the pulling action is not performed.

In one embodiment, the outer diameter of the large end 212 is 2-4 times the outer diameter of the small end 211.

With continued reference to fig. 2A-2C and fig. 3A-3C, tissue-engaging element 21 has a 360 ° circumferentially extending wall 213, wall 213 having an inner surface and an outer surface, wall 213 enclosing a hollow structure with two ends extending therethrough such that small end 211 has a first through-hole 214, large end 212 has a second through-hole 215, and an internal cavity 216 is formed within tissue-engaging element 21.

The aperture of the first through hole 214 is smaller than the aperture of the second through hole 215, and the aperture of the first through hole 214 is matched with the outer diameter of the wire body 1, that is, the aperture of the first through hole 214 is equal to or slightly larger than the outer diameter of the wire body 1, and the aperture of the first through hole 214 is 0.02mm-1.1 mm. Thus, the tissue engaging element 21 can be inserted through the wire body 1, and after the pull wire is implanted, the second through hole 215 and the inner cavity 216 have an open feature, so that the inner cavity 216 can cooperate with the large end 212 to jointly engage body tissues.

As mentioned above, the tissue engagement element 21 is threaded onto the wire body 1, and the small end 211 needs to bear the linear cutting force of the wire body 1, so the wall thickness of the wall body 213 at the small end 211 cannot be too small, otherwise, the tissue engagement element 21 is easily cut by the wire body 1, thereby affecting the use. In addition, in order to facilitate puncture, the outer diameter of the small end 211 cannot be too large, and in the case where the bore diameter of the first through hole 214 has been determined in accordance with the outer diameter of the wire body 1, the outer diameter of the small end 211 depends on the wall thickness of the wall body 213 at the small end 211, and therefore, the wall thickness of the wall body 213 at the small end 211 cannot be too large either. The wall 213 has a wall thickness of 0.05mm to 0.6mm at the small end 211.

After the small end 211 of the tissue-engaging element 21 is pierced into the body tissue, the large end 212 also needs to enter the body tissue through the piercing opening, and after the implantation is completed, the large end 212 needs to engage with the body tissue to perform the functions of lifting, supporting and fixing the body tissue. Thus, the wall thickness of wall 213 at large end 212 cannot be too great, otherwise large end 212 is difficult to pass through the puncture. Wall body 213 can be designed to be smaller in the wall thickness of big end 212 department, and like this, big end 212 receives the extrusion and can take place deformation (when the extrusion force reduces or withdraws, can resume deformation) in puncture department, conveniently enters into organism tissue, can realize that less surface of a wound gets into organism tissue. The wound surface is small, which is beneficial to shortening the recovery time and is more beautiful after recovery. In addition, after entry, the large end 212, which has some deformability, is easily engaged with body tissue. However, the wall thickness of the wall 213 at the large end 212 cannot be too small, otherwise it is difficult to provide sufficient radial support after the large end 212 enters the body tissue, and thus no lifting force can be provided to the body tissue. Also, if the wall thickness 213 of the wall 213 at the large end 212 is too small, the large end 212 may exert a large pressure on the body tissue during pulling, possibly cutting the body tissue. The wall thickness of wall 213 at large end 212 is 0.02mm-0.5 mm.

The wall thickness of the wall 213 may be uniform or gradually decreased along the direction from the small end 211 to the large end 212. Either way of setting the wall thickness of the wall 213 is chosen, and the inner cavity 214 is flared. As described above, the open nature of the second through hole 215 and the internal cavity 216 when the large end 212 is engaged with body tissue allows body tissue to enter and embed in the internal cavity 216, i.e., the internal cavity 216 may also function to engage with body tissue. The more body tissue that enters the lumen 216, the stronger the engagement of the lumen 216 with the body tissue and the stronger the lifting force of the tissue-engaging element 21 against the body tissue. Based on this, it is necessary to increase the openness of the second through hole 215, i.e., to increase the aperture of the second through hole 215, to facilitate the entry of body tissue into the inner cavity 216, and therefore, it is preferable that the wall thickness of the wall body 213 is gradually decreased in the direction from the small end 211 to the large end 212, so that the second through hole 215 can obtain a larger aperture.

Additionally, the surface area and/or friction of the inner surface of wall 213, i.e., the surface area and/or friction of the surface of interior chamber 216, may be increased to enhance the engagement of interior chamber 216. In particular, projections and/or recesses are provided on the inner surface of the wall 213. The protrusions increase the surface area and friction of the surface of the cavity 216, but the height of the protrusions should not be too great, which would affect the volume of the cavity 216 and thus the entry of body tissue into the cavity 216, and the height of the protrusions is 0.01mm to 0.5 mm. Likewise, the grooves increase the surface area and friction of the inner cavity 216 surface, but the depth of the grooves, which may affect the strength of the wall 213, should not be too great, and may range from 0.01mm to 0.5 mm. As shown in fig. 4, in this embodiment, a plurality of annular protrusions 217 are provided on the inner surface of wall 213 at intervals along the axial direction of tissue-engaging element 21.

Unlike the inner surface of the wall body 213, the outer surface of the wall body 213 may be provided with a smooth surface so that an uncomfortable tingling sensation is not generated when the pull-up cord is implanted.

The junction of the small end 211 and the wall 213 may be chamfered to reduce the resistance of the small end 211 to penetration, so as to facilitate passage through the puncture. Therefore, the contact surface between the small end 211 and the body tissue when the puncture is carried out can be reduced, and the small end 211 can play a role in guiding after being contacted with the body tissue, so that the small end 211 can smoothly enter the body tissue. The chamfer angle is in the range of 100-170 degrees.

To facilitate entry of tissue-engaging element 21 into body tissue, wall 213 can be provided with slits along the direction from small end 211 to large end 212, such that the slits yield at the puncture site to facilitate passage of tissue-engaging element 21 through the puncture site. Alternatively, wall 213 may be provided in a helical configuration about the central axis of tissue-engaging element 21, which may also serve to reduce resistance to implantation.

Referring to FIGS. 5A-5C, tissue-engaging element 21 may be configured as a non-rotating body, and in particular, a portion of wall 213 of tissue-engaging element 21 may be recessed radially inward of tissue-engaging element 21 to form a guide wall 218. The inner surface of guide wall 218 is a guide surface and forms part of the surface of lumen 216, which facilitates guiding body tissue into lumen 216, increasing the probability that body tissue will engage lumen 216. Also, the outer surface of guide wall 218 is a support surface that is an arcuate surface that is recessed radially inward of tissue-engaging member 21 and is supported on body tissue to prevent tissue-engaging member 21 from sliding in a direction opposite to the pulling direction (indicated by the arrows in FIGS. 5A-5C). In addition, referring to fig. 6A to 6B, when the tissue-engaging element 21 is a rotating body, the probability of body tissue entering the lumen 216 from all directions is equal, and therefore, the wire body 1 is less likely to be biased, that is, the axis of the wire body 1 generally coincides with the central axis of the tissue-engaging element 21. Thus, the openness of the second through hole 215 is affected by the wire body 1, and when the volume of the body tissue is large, it is difficult to enter the inner cavity 216. By configuring the tissue-engaging element 21 as a non-rotating body, body tissue preferentially enters the lumen 216 through the inner surface of the guide wall 218, such that the wire body 1 is biased, increasing the openness of the second through hole 215, facilitating the body tissue to enter the lumen 216, and improving the engagement performance of the tissue-engaging element 21.

It should be noted that the guide wall 218 reduces the volume of the internal cavity 216, such that the guide wall 218 extends circumferentially at an angle of 180 ° or less to prevent the internal cavity 216 from being too small to receive sufficient tissue. Referring to FIG. 5C, a portion of wall 213 of tissue-engaging element 21 projects radially outward of tissue-engaging element 21 to form a compensating wall 219. By providing the offset wall 219, the volume of the internal cavity 216 is advantageously increased, such that the internal cavity 216 has sufficient volume to receive body tissue while facilitating the introduction of body tissue into the internal cavity 216. In one embodiment, guide wall 218 extends circumferentially at an angle of 180 ° and offset wall 219 extends circumferentially at an angle of 180 °, i.e., guide wall 218 and offset wall 219 together form wall 213.

Tissue-engaging element 21 is prepared by injection molding or thermal expansion. In one preferred embodiment, tissue-engaging element 21 is made by heat-expanding tubing at a relatively low cost to facilitate industrial mass production applications.

Referring to fig. 1A and fig. 1B again, the tissue engagement elements 21 are slidably disposed on the wire body 1, and both ends of each tissue engagement element 21 are provided with a limiting member 22 for limiting, and an outer diameter of the limiting member 22 in a direction perpendicular to the length direction of the wire body 1 is larger than an aperture of the first through hole 214. In this way, each tissue-engaging element 21 is confined between its corresponding two adjacent retainers 22 and is only slidable between its corresponding two adjacent retainers 22.

The number of stoppers 22 is 1 more than the number of tissue-engaging elements 21, i.e. the number of stoppers 22 is N + 1. In addition, when the wire body 1 is in the straightened state, the distance between two adjacent limiting members 22 is the distance H between two adjacent tissue engagement elements 21.

Specifically, after the 1 st limiting member 22 is disposed at a position close to the first free end 11 on the wire body 1, the 1 st tissue engagement element 21 is inserted, then, the 1 st limiting member 22 is spaced from the 1 st limiting member 22 by H in a direction away from the first free end 11, the 2 nd limiting member 22 is disposed on the wire body 1, the 2 nd tissue engagement element 21 … … is inserted, and by analogy, the nth limiting member 22 is disposed, and after the N th tissue engagement element 21 is inserted, the N nd limiting member 22 is spaced from the nth limiting member 22 in a direction away from the first free end 11 by H in a direction away from the N th free end 11, the (N +1) th limiting member 22 is disposed on the wire body 1, so that the arrangement of the tissue engagement element 21 on the wire body 1 can be completed.

It will be appreciated that in other embodiments not shown, tissue-engaging element 21 may also be fixedly disposed on wire body 1, for example, by ultrasonic welding, laser welding, heat sealing, or adhesive fixation on wire body 1. In this case, the stopper 22 is omitted.

Through setting up locating part 22, perhaps with the fixed setting on the line body 1 of tissue engagement element 21, guaranteed the relative stability of line body 1 and tissue engagement element 21, like this, get into organism tissue back, tissue engagement element 1 can play better carrying effect to organism tissue.

With reference to fig. 1A and fig. 1B, the limiting member 22 is a hollow knot disposed on the wire body 1. In the processes of sterilization, transportation and storage, the stress at the hollow knot part is small, so that the smooth sterilization of the pulling line can be ensured, the quality guarantee period of the pulling line can be prolonged, and the deformation and the breakage of the line body 1 at the knot part caused by overlarge stress can be prevented. When the puncture outfit is used, an operator pulls the pulling lines at the two ends, so that the hollow knot is tightened, and the initial diameter of the hollow knot is reduced to the implantation diameter suitable for puncture.

It is to be noted that the initial diameter of the hollow knot needs to be set within a proper range, and specifically, the initial diameter of the hollow knot is 0.05mm to 2 mm. When the initial diameter of hollow knot is too small, great stress can be gathered in hollow knot department for the intensity of the line body 1 reduces, breaks in hollow knot department easily, is unfavorable for carrying sterilization, transportation and the storage of acting as go-between. The initial diameter of the hollow knot should not be too large. As will be appreciated, as the hollow cord knot is gradually tightened during the pulling of the pull-up cord by the surgeon, the position of the hollow cord knot is biased, and the spacing between adjacent tissue-engaging elements 21 may increase or decrease, resulting in a non-equidistant distribution of tissue-engaging elements 21 and thus an uneven pulling effect. In order to reduce the influence on the lifting uniformity, it is necessary to reduce the distance over which the hollow knot is offset as much as possible, that is, to reduce the initial diameter of the hollow knot as much as possible.

To obtain a hollow knot of the proper initial diameter, a standard rod of the proper outer diameter size is used. The line body 1 is tied off around the standard pole, then tightens up gradually, laminates mutually with the surface of standard pole until the hollow knot, takes out the standard pole, can accomplish the setting of the appropriate hollow knot of an initial diameter.

It will be appreciated that in other embodiments, not shown, other types of stop members 22 may also be provided, for example, a protrusion may be provided on the wire body 1 as the stop member 22.

The lifting and pulling wire also comprises an introduction needle 3. The insertion needle 3 has a connection end 31 and a puncture end 32 which are provided opposite to each other. The introduction needle 3 is one, and the introduction needle 3 is arranged on the first free end 11 of the thread body 1 through a connecting end 31. Specifically, the connection end 31 of the introduction needle 3 is provided with an opening, the first free end 11 is inserted into the opening, and then the first free end 11 is connected to the introduction needle 3 by crimping. Further, the introduction needle 3 is an elongated needle body, and is made of metal, preferably stainless steel. The introduction needle 3 may have a hollow structure or a solid structure. The length of the introduction needle 3 is 50mm to 250 mm. The outer diameter of the introduction needle 3 is 0.2mm to 1.4 mm.

The utility model discloses a carry and draw line as implantation nature product need guarantee to be in sterile condition. However, the degradable material is degraded by radiation, water, oxygen, etc. during the sterilization process, so a reasonable sterilization method and a certain protection measure are needed to protect the product to the maximum extent. In the utility model, ethylene oxide sterilization is adopted, or electron beam sterilization is adopted. Further, in order to reduce the influence of the temperature on the product during sterilization, the product is pre-frozen and then sterilized, for example, the product is pre-frozen and then sterilized by low-energy electron beams, or a low-temperature environment, for example, low-temperature ethylene oxide is used during sterilization. In addition, an aluminum foil bag is adopted for sealing and packaging, and a drying agent and/or an oxygen absorbent are placed. Furthermore, during transportation and storage, room temperature storage, or refrigeration, e.g., at 0 ℃ to 8 ℃, or frozen storage, e.g., at (-25 ℃) to (-15 ℃) is required to avoid degradation of the degradable material.

Referring to fig. 7A-7C, in the present invention, the auxiliary puncture needle is used as an auxiliary tool to assist the pulling wire to be implanted into the body tissue. The auxiliary puncture needle comprises a holding handle 41, a needle body 42 and a fixing block 43 which are coaxially arranged. An introduction port 413 is formed at a proximal end of the grip handle 41 (when in operation, an end close to the operator is a proximal end, and an end far from the operator is a distal end, the same applies below), and a guide cavity 414 is formed in the grip handle 41 along an axial direction of the grip handle 41. The proximal end of the needle body 42 is connected with the distal end of the holding handle 41, the distal end of the needle body 42 is a tip 421, an outlet 422 is opened on the needle body 42 near the tip 421, and a containing cavity 423 is arranged in the needle body 42 along the axial direction of the needle body 42. The introduction port 413, the guide chamber 414, the housing chamber 423, and the discharge port 422 are sequentially communicated. Mounting block 43 is slidably disposed on needle body 42 and mounting block 43 can be removed from needle body 42 or mounted to needle body 42 at tip 421.

Needle body 42 may be a blunt, semi-blunt, or sharp needle, depending on the sharpness of tip 421.

The specific operation method for assisting the implantation of the pulling wire into the body tissue by taking the auxiliary puncture needle as an auxiliary tool comprises the following steps:

1) the introducer needle 3 is inserted through the introduction port 413, passes through the guide chamber 414 and the accommodation chamber 423 in this order, and then passes through the introduction port 422, and the tissue engagement element 21 is inserted into the accommodation chamber 423 under the guidance of the introducer needle 3, and the first free end 11 passes through the introduction port 422;

2) cutting at the first free end 11, removing the introduction needle 3, and slidably mounting the fixing block 43 on the needle body 42 from the tip 421, so that the first free end 11 is fixed by the fixing block 43;

3) marking a puncture point, a preset direction and a terminal implantation point in a region to be pulled (for example, a cheek region), wherein the step 3) can be performed first, and then the steps 1) and 2) can be performed;

4) tip 421 penetrates the puncture point to insert needle body 42 to a desired depth, and then needle body 42 is advanced in the body tissue along a predetermined direction to the terminal implantation point;

5) pressing the first free end 11 in the region of the terminal implantation point across the skin, withdrawing the needle body 42;

6) slightly pressing soft tissues by fingers to finely adjust the implantation state of the pulling line;

7) pressing the first free end 11 at the terminal implantation site area across the skin and pulling the second free end 12 in a direction opposite to the preset direction;

8) at the second free end 12, a knot is tied and/or an anchoring structure is provided to anchor the puller wire.

By using the auxiliary puncture needle, the first free end 11 is left in the body tissue after implantation without penetrating out of the body tissue, so that the wound can be reduced, and the aesthetic property of the area to be pulled after the operation is facilitated.

The grip handle 41 includes a grip portion 411 and a connecting portion 412 connected to each other, the introduction port 413 is opened on a proximal end surface of the grip portion 411, and the needle body 42 is connected to a distal end of the connecting portion 412. The outer diameter of the holding portion 411 is larger than that of the connecting portion 412, and the axial length of the holding portion 411 is larger than that of the connecting portion 412, so that the holding portion is more convenient for an operator to hold.

In order to increase the friction force of the outer surface of the grip portion 411 and increase the grip feeling of the grip portion 411, an anti-slip pattern is provided on the outer surface of the grip portion 411, and/or an outer surface portion of the grip portion 411 is recessed inward in the radial direction of the grip portion 411.

A first cavity is formed in the holding portion 411 along the axial direction of the holding portion 411, a second cavity is formed in the connecting portion 412 along the axial direction of the connecting portion 412, and the first cavity and the second cavity are matched to form a guide cavity 414. The radial dimension of the first cavity is larger than the radial dimension of the second cavity, which facilitates the insertion of the introducer needle 3 into the guide cavity 414 through the introduction port 413, and a tool can be used to project from the introduction port 413 into the first cavity against the introducer needle 3.

The leading-out port 422 penetrates through the tip 421 of the axial portion of the needle body 42, so as to facilitate the leading-in needle 3 to extend out of the leading-out port 422 along the axial direction of the needle body 42, thereby facilitating the operator to pull the leading-in needle 3 from the leading-out port 422.

The auxiliary puncture needle further comprises a protective sleeve 44, and the protective sleeve 44 is detachably sleeved on the needle body 42 and used for protecting the needle body 42. When the auxiliary pulling wire is needed to be implanted, the protective sleeve 44 is directly taken down.

The inner diameter of the shield 44 is larger than the outer diameter of the needle body 42 and the axial length of the shield 44 is larger than the axial length of the needle body 42, so that the shield 44 is prevented from contacting the needle body 42 and thereby avoiding friction damage to the needle body 42. Further, in order to allow the sheath 44 to be stably fitted over the needle body 42, the proximal end of the sheath 44 is detachably engaged with the connecting portion 412.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

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 (9)

1. An auxiliary puncture needle is characterized in that: the utility model discloses a puncture needle, including supplementary pjncture needle, needle body and fixed block, the needle body is provided with the guide port, and the guide port is seted up to the proximal end of grip handle, just follow in the grip handle the axial of grip handle is provided with the guide chamber, the proximal end of needle body with the distal end of grip handle is connected, just the distal end of needle body is most advanced, be close to on the needle body the export of leading has been seted up to the most advanced, follow in the needle body the axial of needle body is provided with accepts the chamber, the guide port the guide chamber accept the chamber and the export communicates in proper order, the fixed block slidable ground sets up on the needle body, just the fixed block can follow tip department takes off or installs extremely on the needle body.

2. An auxiliary puncture needle according to claim 1, wherein: the holding handle comprises a holding part and a connecting part which are connected with each other, the introducing port is arranged on the end face of the near end of the holding part, the needle body is connected with the far end of the connecting part, the outer diameter of the holding part is larger than that of the connecting part, and the axial length of the holding part is larger than that of the connecting part.

3. An auxiliary puncture needle according to claim 2, wherein: the outer surface of the holding part is provided with anti-skid grains.

4. An auxiliary puncture needle according to claim 2, wherein: an outer surface portion of the grip portion is recessed inward in a radial direction of the grip portion.

5. An auxiliary puncture needle according to claim 2, wherein: the inner edge of the holding part is provided with a first cavity along the axial direction of the holding part, the inner edge of the connecting part is provided with a second cavity along the axial direction of the connecting part, the first cavity and the second cavity are matched to form the guide cavity, and the radial size of the first cavity is larger than that of the second cavity.

6. An auxiliary puncture needle according to claim 1, wherein: the outlet penetrates through the tip along the axial direction of the needle body.

7. An auxiliary puncture needle according to claim 2, wherein: the auxiliary puncture needle further comprises a protective sleeve, and the protective sleeve is detachably sleeved on the needle body.

8. An auxiliary puncture needle according to claim 7, wherein: the inner diameter of the protective sleeve is larger than the outer diameter of the needle body, and the axial length of the protective sleeve is larger than that of the needle body.

9. An auxiliary puncture needle according to claim 8, wherein: the near end of the protective sleeve is detachably matched with the connecting part.

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