CN211704724U

CN211704724U - Medical anchor

Info

Publication number: CN211704724U
Application number: CN202020210702.3U
Authority: CN
Inventors: 董文兴
Original assignee: Beijing Tianxing Bomaidi Medical Equipment Co ltd
Current assignee: Beijing Tianxing Medical Co ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-10-20
Anticipated expiration: 2030-02-25

Abstract

The utility model provides a medical anchor nail relates to medical instrument technical field. The medical anchor comprises an anchor body in a strip shape; the anchor nail body is provided with occlusion lines and a side wing; the occlusion lines comprise ring grooves and ring platforms; the ring groove and the ring platform are arranged on the circumferential outer wall of the anchor body in a winding manner; the fixed end of the side wing is connected with the circumferential outer wall of the anchor body, and the free end of the side wing is far away from the anchor body. The utility model discloses a medical anchor, the outer edge of the anchor body is provided with occlusion lines, which is used for the fixed installation of the medical anchor when the operation is inserted; and the outer edge of the anchor body is provided with a side wing for retaining and fixing the medical anchor after the insertion of the surgical operation.

Description

Medical anchor

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a medical anchor nail.

Background

In orthopedic surgery, reattachment of soft tissue, ligaments, etc. to the surface of a bone typically requires the use of a medical anchor for securing a suture in the bone, the suture being attached to the rear end of the medical anchor for suturing soft tissue, such as ligaments, tendons, etc.

The existing medical anchor is generally provided with inverted tooth-shaped lines, threads or a lateral rod at the front section (namely an implantation section) of the medical anchor, so that the backstop effect after implantation is achieved. Wherein, the lateral rod is not favorable for the imbedding of the medical anchor nail, and the backstop effect of the inverted tooth-shaped lines or the threads is not obvious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a medical anchor nail both does benefit to and inserts smoothly in the bone, has strengthened the stopping effect again.

The utility model discloses a realize like this:

a medical anchor comprises an anchor body in a strip shape; occlusion lines and side wings are arranged on the anchor nail body; the occlusion lines comprise ring grooves and ring platforms; the ring groove and the ring platform are arranged on the circumferential outer wall of the anchor body in a winding manner; the fixed end of the side wing is connected with the circumferential outer wall of the anchor body, and the free end of the side wing is far away from the anchor body.

When the medical anchor is used for realizing the reconnection of soft tissue or ligament and the surface of bone, the part of the anchor body provided with the occlusion lines is firstly inserted into the bone, and the sliding friction between the medical anchor and the bone is increased due to the ring grooves and the ring platforms of the occlusion lines, so that the caliber of the insertion hole on the bone is favorably enlarged, and the medical anchor is smoothly inserted into the bone. After the anchor body of the occlusion line part is inserted, the part of the anchor body provided with the side wing can clamp the side wing into the insertion hole, so that the retaining effect of the medical anchor is improved. Wherein, the number of the ring grooves and the number of the ring platforms are at least one, and the number of the side wings is multiple.

Further, the number of the ring grooves and the number of the ring platforms are both larger than or equal to one; the annular groove with the loop platform is followed the length direction interval setting of anchor body. The technical effects are as follows: the annular groove and the annular table are arranged on the side wall of the anchor body at intervals to form lines of a wave-shaped structure, the diameter of the insertion hole is enlarged in the process that the anchor body is inserted into the bone, and meanwhile, a certain fixing effect is also considered.

Further, the diameter of loop platform is followed anchor body is followed the front end grow gradually to the rear end, the place ahead the back of loop platform along with the rear the outer edge of loop platform forms its technological effect of annular groove lies in: the loop platform of this structure forms the trapezoidal structure of falling in the anchor body, can improve the fixed effect of anchor body anterior segment in the bone. In particular, the outer edge of the annular table should be sharp to facilitate insertion into the bone.

Further, the diameter of the loop platform is larger than the diameter of the anchor body rear section. The technical effects are as follows: since the collar and the annular groove serve as flaring, and after the flaring the front section of the anchor body is to be inserted deep enough for the shoulder to be able to enter the insertion opening as well. The diameter of the ring platform is larger than that of the rear section of the anchor bolt body, so that a sufficient accommodating space is reserved for the arrangement of the side wings, and the side wings are prevented from being directly clamped at ports of the inserting holes due to difficulty in bending when entering the inserting holes.

Further, the free ends of the wings are inclined towards the rear end of the anchor body. The technical effects are as follows: the side wings are inclined backwards, so that the retaining effect of the medical anchor can be obviously improved. Alternatively, the side wings may be provided in a column shape, a cone shape, or a sheet shape.

Further, the side flaps are elastic. The technical effects are as follows: the elastic wings are elastically deformable for rapid insertion when entering the insertion hole. And because the side wings are inclined backwards, the medical anchor is not easy to withdraw from the insertion hole due to elastic deformation.

Further, the distance between the free end of the side wing and the center line of the anchor body is larger than the radius of the loop platform. The technical effects are as follows: because the radius of the ring platform is small, the flank can elastically deform under the pressure of the hole wall of the insertion hole in the process of entering the insertion hole, and after entering the insertion hole, the flank is attached and abutted to the inner wall of the insertion hole under the action of resilience force and is clamped into the hole wall to realize stable installation.

Further, the number of the side wings is even more; an even number of the flanks are distributed symmetrically two by two with respect to the axis of the anchor body. The technical effects are as follows: the flanks mainly bear the pressure from the inner wall of the insertion hole, and the flanks which are symmetrical in pairs bear the same force, so that the rotation torque cannot occur, and the anchor body cannot be separated easily.

Further, two symmetrical side wings are integrally formed and penetrate through the anchor body. The technical effects are as follows: in the structure, after the symmetrical side wings with the interaction force are integrally designed and formed, the pressure from the inner wall of the insertion hole can be mutually counteracted, so that the whole medical anchor can keep a constant and stable position in the bone.

Further, the side wings comprise a main rod and a branch rod; the main rod is fixed in the anchor nail body, the fixed end of the branch rod is connected with the main rod, and the free end of the branch rod extends towards the central line of the anchor nail body. The technical effects are as follows: the mobile jib is used for butt and chucking at the inner wall of patchhole, and branch is towards anchor body central line, can prevent on the one hand that the mobile jib has lost the joint effect because of too being close to the anchor body, and on the other hand can decompose the effort, will come from the effort homodisperse of plug-in hole inner wall and human tissue to the anchor body, avoids the mobile jib to take place to buckle.

The utility model has the advantages that:

the utility model discloses a medical anchor nail does benefit to during the anchor nail body inserts the bone smoothly owing to set up the interlock line, and the anchor nail body has set up the flank simultaneously and has strengthened the stopping effect of medical anchor nail again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a medical anchor according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a medical anchor according to a second embodiment of the present invention;

fig. 3 is a schematic structural view of a medical anchor according to a third embodiment, a fourth embodiment and a fifth embodiment of the present invention;

fig. 4 is a schematic structural view of a medical anchor according to a sixth embodiment of the present invention;

fig. 5 is a schematic structural view of a medical anchor according to a seventh embodiment of the present invention.

In the figure: 100-an anchor body; 200-ring groove; 300-ring table; 400-flank; 401-main bar; 402-strut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The first embodiment:

fig. 1 is a schematic structural view of a medical anchor according to a first embodiment of the present invention. Referring to fig. 1, the present embodiment provides a medical anchor, which includes an anchor body 100 in a strip shape; the anchor body 100 is provided with occlusion lines and a side wing 400; the occlusion lines comprise a ring groove 200 and a ring platform 300; the ring groove 200 and the ring platform 300 are wound on the circumferential outer wall of the anchor body 100; the fixed end of the wing 400 is connected to the circumferential outer wall of the anchor body 100 and the free end of the wing 400 is distal from the anchor body 100.

Wherein, the number of the ring grooves 200 is one or more, the number of the ring lands 300 is one or more, and the number of the wings 400 is more.

The working principle and the operation method of the medical anchor are as follows:

in orthopedic surgery, reattachment of soft tissue, ligaments, etc. to a bone surface typically requires the use of medical anchors, the role of which is to secure the suture in the bone. Therefore, the medical anchor should be connected with a suture, and one end of the anchor inserted into the bone should be provided with a clamping structure to prevent the anchor from being separated from the bone.

First, the portion of the anchor body 100 provided with the bite line is inserted into the bone. The sliding friction between the medical anchor and the bone is increased due to the ring groove 200 and the ring platform 300 which are meshed with the lines, so that the caliber of an insertion hole in the bone is favorably enlarged, and the medical anchor is smoothly inserted into the bone. And since the insertion hole is enlarged, the wings 400 can be smoothly inserted into the insertion hole.

Then, after the portion of the anchor body 100 provided with the bite texture is inserted, the portion of the anchor body 100 provided with the wing 400 can snap the wing 400 into the insertion hole. The wings 400 should be uniformly arranged on the occlusion line so that the wings 400 can be caught on the side walls of the insertion hole to improve the retaining effect of the medical anchor.

Second embodiment:

fig. 2 is a schematic structural view of a medical anchor according to a second embodiment of the present invention. Referring to fig. 2, the present embodiment provides a medical anchor, which is substantially the same as the medical anchor of the first embodiment, and the difference between the two embodiments is that in the medical anchor of the present embodiment, the number of the ring grooves 200 and the number of the ring stands 300 are both greater than or equal to one; the ring grooves 200 and the ring lands 300 are spaced apart along the length of the anchor body 100.

In this case, the ring grooves 200 and the ring lands 300 may not be disposed at intervals, but a plurality of ring lands 300 may be connected one by one, and a plurality of ring grooves 200 may be connected one by one.

Further, as shown in fig. 2, the diameter of the loop platform 300 gradually increases from the front end to the rear end along the anchor body 100, and the rear edge of the front loop platform 300 and the outer edge of the rear loop platform 300 form the ring groove 200.

The engaging lines of the ring groove 200 and the ring platform 300 may be a thread structure, and the medical anchor may be fixed in the bone by rotating the anchor body 100.

The third embodiment:

fig. 3 is a schematic structural view of a medical anchor according to a third embodiment, a fourth embodiment and a fifth embodiment of the present invention. Referring to fig. 3, the present embodiment provides a medical anchor, which is substantially the same as the medical anchor of the first embodiment or the second embodiment, and the difference between the two embodiments is that the diameter of the loop platform 300 in the medical anchor of the present embodiment is larger than the diameter of the rear section of the anchor body 100.

At this time, the outer diameter of the ring platform 300 is larger than the diameter of the anchor body 100, the ring groove 200 is formed between two adjacent ring platforms 300, after the ring platforms 300 are clamped into the bone, the bone tissue automatically sinks into the ring groove 200 to be fixed, and the diameter of the rear section of the anchor body 100 is smaller than the diameter of the ring platform 300, so that the shoulder 400 can smoothly enter the insertion hole.

Optionally, the ring platform 300 may also be provided with a plurality of notches. Wherein a plurality of indentations are provided at the outer edge of the collar 300 along the circumference of the collar 300, the indentations facilitating drainage of fluid material within the insertion hole during insertion of the medical anchor.

The fourth embodiment:

fig. 3 is a schematic structural view of a medical anchor according to a third embodiment, a fourth embodiment and a fifth embodiment of the present invention. Referring to fig. 3, the present embodiment provides a medical anchor, which is substantially the same as the medical anchor of the first, second or third embodiment, and the difference between the two embodiments is that the free ends of the wings 400 of the medical anchor of the present embodiment are inclined toward the rear end of the anchor body 100.

The wings 400 may also extend radially outward from the anchor body 100 and may be radially inserted into the inner wall of the anchor body 100 after entering the insertion hole.

Further, as shown in figure 3, the side flaps 400 are elasticized. When the free end, i.e., the distal end, of the shoulder 400 is inclined toward the posterior end, the radius of the outer edge is still greater than the radius of the ring platform 300.

Alternatively, wings 400 may be made of a shape memory alloy. Among them, shape memory alloys (shapememory alloys) have been widely used in clinical medical fields, such as artificial bones, injured bone fixation pressurizers, orthodontic appliances, various endoluminal stents, embolization devices, heart prostheses, thrombus filters, interventional guide wires, surgical sutures, etc., and have played an irreplaceable role in modern medical treatment. An important property of shape memory alloys is pseudoelasticity (also known as superelasticity), which is the ability of a shape memory alloy to recover from deformation much greater than that of a typical metal under an applied force, i.e., the large strain produced during loading is recovered as a function of unloading. This property is effectively used in medical anchors.

Fifth embodiment:

fig. 3 is a schematic structural view of a medical anchor according to a third embodiment, a fourth embodiment and a fifth embodiment of the present invention. Referring to fig. 3, the present embodiment provides a medical anchor, which is substantially the same as the medical anchor of any one of the first to fourth embodiments, and the difference between the two embodiments is that the distance between the free end of the wing 400 and the center line of the anchor body 100 in the medical anchor of the present embodiment is greater than the radius of the loop platform 300.

In this embodiment, the distance from the free end of the wing 400 to the anchor body 100 is larger than the radius of the annular platform 300, and after the anchor body 100 is inserted into the bone under the action of the annular platform 300 and the annular groove 200, the bore diameter of the insertion hole is equal to the diameter of the annular platform 300, and the wing 400 is slightly larger in size, so that the wing can enter the insertion hole under elastic deformation and then be tightly clamped on the inner wall of the insertion hole.

Sixth embodiment:

fig. 4 is a schematic structural view of a medical anchor according to a sixth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a medical anchor, which is substantially the same as the medical anchor of any one of the first to fifth embodiments, and the difference between the two embodiments is that the number of the side wings 400 in the medical anchor of the present embodiment is even; two of the even plurality of wings 400 are symmetrically distributed with respect to the axis of the anchor body 100.

Further, as shown in fig. 4, two symmetrical wings 400 are integrally formed and extend through the anchor body 100.

Alternatively, the number of wings 400 may be a variable number, evenly distributed around the circumference of the anchor body 100.

Seventh embodiment:

fig. 5 is a schematic structural view of a medical anchor according to a seventh embodiment of the present invention. Referring to fig. 5, the present embodiment provides a medical anchor, which is substantially the same as the medical anchor of any one of the first to sixth embodiments, and the difference between the medical anchor and the wing 400 of the present embodiment includes a main rod 401 and a branch rod 402; the main rod 401 is fixed to the anchor body 100, the fixed end of the rod 402 is connected to the main rod 401, and the free end of the rod 402 extends towards the center line of the anchor body 100.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical anchor, comprising an anchor body (100) in the form of a strip; occlusion lines and a side wing (400) are arranged on the anchor nail body (100);

the occlusion line comprises a ring groove (200) and a ring platform (300); the ring groove (200) and the ring platform (300) are wound on the circumferential outer wall of the anchor body (100);

the fixed end of the side wing (400) is connected with the circumferential outer wall of the anchor body (100), and the free end of the side wing (400) is far away from the anchor body (100).

2. The medical anchor according to claim 1, wherein the number of ring grooves (200) and the number of ring lands (300) are each greater than or equal to one; the ring groove (200) and the ring platform (300) are arranged at intervals along the length direction of the anchor body (100).

3. The medical anchor according to claim 2, wherein the diameter of the loop (300) becomes gradually larger from the front end to the rear end along the anchor body (100), and the rear edge of the front loop (300) and the outer edge of the rear loop (300) form the ring groove (200).

4. The medical anchor of claim 1, wherein the loop (300) has a diameter greater than a diameter of the posterior section of the anchor body (100).

5. The medical anchor according to claim 1, wherein the free ends of the wings (400) are inclined towards the rear end of the anchor body (100).

6. The medical anchor according to claim 5, wherein the wings (400) are resilient.

7. The medical anchor according to claim 1, wherein the distance between the free end of the shoulder (400) and the midline of the anchor body (100) is greater than the radius of the loop platform (300).

8. The medical anchor according to claim 1, wherein the number of flanks (400) is an even number; an even number of said flanks (400) are distributed symmetrically two by two with respect to the axis of the anchor body (100).

9. The medical anchor according to claim 8, wherein two symmetrical wings (400) are integrally formed and extend through the anchor body (100).

10. The medical anchor according to claim 1, wherein the lateral wing (400) comprises a main stem (401) and a branch (402); the main rod (401) is fixed on the anchor bolt body (100), the fixed end of the branch rod (402) is connected with the main rod (401), and the free end of the branch rod (402) extends towards the central line of the anchor bolt body (100).