CN211484850U

CN211484850U - Hollow porous anchor assembly

Info

Publication number: CN211484850U
Application number: CN201922427292.8U
Authority: CN
Inventors: 何宇; 王洪; 孟春庆; 涂名实
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-09-15
Anticipated expiration: 2029-12-28

Abstract

The utility model discloses a hollow porous anchor assembly, which comprises an anchor and a butted detachable tightening mechanism, wherein the anchor is of a hollow porous structure, the interior of the anchor is a hollow channel, the outer side wall of the anchor is a convex self-tapping thread, a plurality of through holes are arranged on the side wall of a gap between the self-tapping threads, and the through holes are all communicated with the hollow channel; the tightening mechanism is internally provided with another hollow channel which is communicated with the hollow channel inside the anchor and the side wall through hole to form a channel for bone cement or other biological agent semifluid flow promoting healing. The invention has the advantages that for osteoporosis patients, bone cement can be poured into the hollow channel to obtain immediate mechanical stability; for a common patient, the tissue repair can be promoted by pouring biological agent semi-fluid for promoting healing, or even if no pouring is performed, the porous structure is convenient for bone tissue to grow into pores in the later period, and the holding force of the anchor is stronger.

Description

Hollow porous anchor assembly

[ technical field ] A method for producing a semiconductor device

The utility model relates to a medical anchor nail technical field, in particular to can pour into bone cement or other biological agent semifluid's that promote healing cavity porous anchor nail subassembly into.

[ background of the invention ]

Soft tissue repair of musculoskeletal attachments, such as ankle joint collateral ligament tears, knee joint collateral ligament tears, elbow joint collateral ligament tears, glenoid labrum tears, rotator cuff tears, and the like, often requires the use of anchors in trauma orthopedics and sports medicine clinical procedures. When in use, the anchor is implanted into bone tissue of a human body, and then soft tissue suture fixation is carried out through a suture at the tail end of the anchor so as to realize the soft tissue repair of the musculoskeletal attachment part. In general, the patient has strong bone and sufficient anchor holding force. However, as the population ages, patients with osteoporosis continue to increase. The condition of osteoporosis and even severe osteoporosis complicated by soft tissue injury at musculoskeletal attachment is frequently encountered in clinical work, and the existing condition of the complication is not rare clinically. Osteoporosis patients have weak bones and poor strength, and the traditional anchor is a solid structure, so although the strength of the anchor is high, the holding force in the weak bones is often insufficient. At this moment, the conventional method is adopted to implant the anchor, so that the situation of anchor failure often occurs, or the situation that the anchor is difficult to insert in the operation and is not fixed firmly, even the anchor is directly pulled out in the suturing process, or the situation that the anchor is pulled out in the rehabilitation exercise process after the operation, potential complications are caused, the functional rehabilitation of the patient is influenced, and even the risk of medical disputes occurs.

[ Utility model ] content

In view of this, for overcoming prior art's not enough, the utility model provides a porous anchor nail subassembly of cavity, structural design is novel, and porous structure's design does benefit to fill bone cement and obtains the stable or other biological agent semifluid that promote the healing at once of mechanics or the bone tissue later stage of being convenient for grows into the hole, makes the anchor nail of implanting human bone tissue more firm, and the power of controlling is stronger, is favorable to combining the soft tissue restoration that has osteoporosis patient's skeletal muscle adnexion, shortens postoperative rehabilitation time.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a porous anchor subassembly of cavity, includes the detachable tight mechanism of turning round of anchor and butt joint, the anchor is hollow porous structure, and the pointed end is sharp head, and its inside is a hollow passageway, and the anchor lateral wall is bellied self tapping screw, is located a plurality of through-holes have been seted up on the lateral wall in space between the self tapping screw, the through-hole all with hollow passageway intercommunication.

And another hollow channel is arranged in the tightening mechanism and is communicated with the hollow channel in the anchor and the side wall through hole to form a channel for semi-fluid liquid to flow together.

The semi-fluid liquid is not limited to bone cement, but can be bone morphogenetic protein BMP suspension or related polypeptide suspension or various cytokine suspensions, gel or platelet rich plasma PRP or other biological agent semi-fluid for promoting healing.

The screwing mechanism is a screwdriver-like structure, at least two cattle ear annular structures are arranged on the end face of the butt joint of the anchor bolt and the screwdriver-like structure, the front end part of the screwdriver-like structure is just clamped into the empty parts of the two cattle ear annular structures to be abutted against the empty parts, and the anchor bolt can be screwed.

The end surface of the anchor is attached with two or more oxear ring structures, and the function of the anchor is to pre-penetrate a high-strength suture for soft tissue repair suture.

The screwdriver-like structure is used for rotating the anchor, screwing the anchor into human bone tissue, and directly pulling the anchor to move away after screwing, so that the use is convenient.

Further, the handle part of the tightening mechanism is in a shape of a cylinder, a polygon prism, a spindle or other drivers conforming to the human engineering, and the contact surface is provided with a frosted surface or a corrugated groove, so as to increase the holding force of the tightening mechanism.

Preferably, the cross section of the front end part of the tightening mechanism is saddle-shaped, and grooves for accommodating sutures are arranged on two side edges.

The periphery of turning tight mechanism front end portion and recess is equipped with the sleeve pipe that combines closely, suture one end hangs on the ox earrings of anchor terminal surface, and the other end extends to and accomodates in the recess, and whole cover is in the sleeve again to when preventing to twist tight mechanism, the suture with it takes place to twine, knot etc. to turn tight mechanism.

Preferably, a suture fixing ring is arranged in the groove and used for fixing the other end of the suture.

The tail part of the tightening mechanism is butted with a special adapter and is connected with a common injector or a high-pressure semi-fluid perfusion gun, and bone cement or other biological agent semi-fluid for promoting healing is perfused into the hollow channel inside the tightening mechanism by pressurizing through the injector or the high-pressure semi-fluid perfusion gun.

Further, the through holes of the anchor side wall are distributed at intervals along the thread direction.

The cross section of the through hole at the side part of the anchor is flat ellipse, round or square, or other irregular shapes which are beneficial to semi-fluid outflow, and the like.

The cross section of the through hole at the side part of the anchor is flat ellipse, the long axis of the through hole is consistent with the long axis direction of the anchor, the width of the opening in the short axis direction is not more than one sixth of the perimeter of the cross section of the anchor part where the through hole is located, the mechanical strength of the opening in the mode is sufficient, the outlet area of the through hole is increased by the flat ellipse hole, and the outflow of semi-fluid liquid is facilitated.

The diameter of the anchor is 3-6mm, so that the anchor is more suitable for being implanted into human bone tissues, and is firm and reliable.

The beneficial effects of the utility model are that, the porous anchor nail subassembly of cavity sets up porous structure and inside cavity passageway, and the advantage is embodied: (1) for osteoporosis patients, immediate mechanical stabilization can be achieved by pouring bone cement; (2) for common patients, bone morphogenetic protein BMP suspension or related polypeptide suspension or various cytokine suspensions, gel or biological agent semifluid for promoting healing such as platelet-rich plasma PRP and the like can be perfused to promote tissue repair and shorten postoperative rehabilitation time; (3) for ordinary patients, even if no perfusion is performed, the porous structure is convenient for the bone tissue to grow into pores in the later period, and the holding force of the anchor is stronger.

[ description of the drawings ]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the explosive structure of the present invention.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic structural view of the anchor of the present invention.

Figure 4 is a cross-sectional schematic view of the cinching mechanism in another scenario.

In the figure, 1, an anchor bolt, 11, a hollow channel, 12, a through hole, 13, a cattle ear ring, 131, a round hole, 2, a tightening mechanism, 21, a hollow channel, 22, a sleeve, 23, a handle, 24 and a groove.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

referring to fig. 1, 2 and 3, a hollow porous anchor and supporting subassembly, including anchor 1 and the detachable tight mechanism 2 of turning round of butt joint, anchor 1 is hollow porous structure, and the pointed end is sharp head, and its inside is a hollow passageway 11, and the lateral wall of anchor 1 is bellied self tapping screw thread, is located a plurality of through-holes 12 have been seted up on the lateral wall in space between the self tapping screw thread, through-hole 12 all with hollow passageway 11 intercommunication.

The tightening mechanism 2 is provided with another hollow channel 21 inside, and is communicated with the hollow channel inside the anchor and the side wall through hole to form a channel for flowing semi-fluid liquid, wherein the liquid is bone cement or other biological agent semi-fluid for promoting healing.

The direction of the arrows in fig. 1 is the passage for the semi-fluid flow of the bone cement or other biological agent that promotes healing.

It is cylindric to turn round tight mechanism 2 for bottle opener appearance structure, its handle portion, set up two ox ear rings 13 on the terminal surface of anchor 1 and bottle opener appearance structure butt joint, the preceding tip of bottle opener appearance structure just blocks into two ox ear rings 13 empty and work as rather than counterbalance, and can twist anchor 1, the last round hole 131 that is provided with of ox ear ring 13, and its effect is to wear high strength suture in advance for the soft tissue is restoreed and is sewed up.

The screwdriver-like structure is used for rotating the anchor bolt 1, screwing the anchor bolt 1 into human bone tissue, and can be directly pulled to move away after being screwed, so that the use is convenient.

Fig. 2 shows a schematic cross-sectional view of the middle portion of the corresponding tightening mechanism 2 for two of the two earrings 13.

The cross section of the front end part of the tightening mechanism 2 is saddle-shaped, and grooves 24 for accommodating sutures are arranged on two side edges.

The front end part of the tightening mechanism 2 and the peripheries of the two grooves 24 are provided with sleeves 22 which are tightly combined, one end of the suture is hung on the ox ear ring 13 on the end surface of the anchor, the other end of the suture extends into the groove 24 to be accommodated, and the whole sleeve 22 is sleeved with the suture.

The sleeve 22 is tightly contacted with the tightening mechanism 2, and the suture is wholly contained in the sleeve 22, so that the suture and the tightening mechanism 2 are prevented from being wound and knotted when the tightening mechanism 2 screws the anchor 1.

Referring to fig. 4, another situation is that when three bovine ear loops 13 are arranged on the anchor bolt 1, the cross-sectional view of the through part of the corresponding tightening mechanism 2 is shown, and the butt joint principle is the same. At this time, the front end of the tightening mechanism 2 is provided with three grooves 24 for respectively receiving three high-strength sutures pre-threaded from the three bovine-ear rings 13.

Referring to fig. 1, the tail of the tightening mechanism 2 is butted with a special adapter, and is connected with an external common injector or a high-pressure semi-fluid perfusion gun, bone cement or other biological preparation semi-fluid for promoting healing is perfused into the internal hollow channel 21 of the tightening mechanism 2 under pressure through the injector or the high-pressure semi-fluid perfusion gun, and flows into human tissues along the hollow channel 11 and the through hole 12 of the anchor 1, and after the bone cement is solidified, the anchor 1 and the human bone tissues are fused into a whole, so that the fixation is firmer. Other biological agent semifluids for promoting healing can also accelerate tissue repair and shorten postoperative rehabilitation time.

As shown in fig. 3, the through holes 12 of the sidewall of the anchor bolt 1 are distributed at intervals along the thread direction.

The section of the through hole 12 at the side part of the anchor 1 is in a flat ellipse shape, the direction of the long axis of the through hole is consistent with the direction of the long axis of the anchor 1, the width of the opening in the direction of the short axis of the through hole is not more than one sixth of the perimeter of the cross section of the part of the anchor 1 where the through hole 12 is located, the mechanical strength of the opening in the shape is sufficient, the outlet area of the through hole 12 is increased by the flat ellipse hole, and the semi-flow liquid.

The diameter of the anchor bolt 1 is set to be 5mm, so that the anchor bolt is relatively suitable for being implanted into human bone tissues, and is firm and reliable.

The hollow porous anchor component is characterized in that a porous structure and an internal hollow channel are arranged, and the hollow porous anchor component has the advantages that: (1) for osteoporosis patients, immediate mechanical stabilization can be achieved by pouring bone cement; (2) for common patients, bone morphogenetic protein BMP suspension or related polypeptide suspension or various cytokine suspensions, gel or biological agent semifluid for promoting healing such as platelet-rich plasma PRP and the like can be infused, so that the tissue repair is accelerated, and the postoperative rehabilitation time is shortened; (3) for ordinary patients, even if no perfusion is performed, the porous structure is convenient for the bone tissue to grow into pores in the later period, and the holding force of the anchor is stronger.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hollow porous anchor assembly is characterized by comprising an anchor and a butt-jointed detachable tightening mechanism, wherein the anchor is of a hollow porous structure, the pointed end of the anchor is a sharp head, a hollow channel is formed in the anchor, the outer side wall of the anchor is provided with convex self-tapping threads, a plurality of through holes are formed in the side wall of a gap between the self-tapping threads, and the through holes are communicated with the hollow channel;

2. The hollow porous anchor assembly of claim 1, wherein the tightening mechanism is a driver-like structure, the end surface of the anchor abutting the driver-like structure is provided with at least two bullear loop structures, and the front end portion of the driver-like structure is just clamped into the two bullear loop structures and abuts against the two bullear loop structures, and the anchor can be screwed.

3. The hollow porous anchor assembly of claim 2, wherein the handle portion of the cinching mechanism is cylindrical, polygonal prism, or spindle shaped and is frosted or fluted corrugated at the contact surface.

4. The hollow porous anchor assembly of claim 1, wherein the cross-section of the front end of the cinching mechanism is saddle-shaped, and grooves for receiving sutures are provided on both sides.

5. The hollow porous anchor assembly according to claim 4, wherein a tightly combined sleeve is arranged at the front end part of the tightening mechanism and the periphery of the groove, one end of the suture is hung on a cattle ear ring at the end face of the anchor, the other end of the suture extends into the groove to be received, and the suture is integrally sleeved in the sleeve.

6. The hollow multi-bore anchor assembly of claim 1, wherein the tail of the cinching mechanism interfaces with a specially adapted adapter to connect to a conventional syringe or a high pressure semi-fluid perfusion gun.

7. The hollow porous anchor assembly of claim 1, wherein the plurality of through holes of the anchor sidewall are spaced apart along the threading direction.

8. The hollow porous anchor assembly of claim 1, wherein the cross-section of the bore of the anchor side is flat oval, circular or square.

9. The hollow porous anchor assembly of claim 8, wherein the cross-section of the bore in the anchor side portion is a flattened oval, the major axis of the bore is aligned with the major axis of the anchor, and the width of the bore in the minor axis direction is no more than one-sixth of the circumference of the cross-section of the anchor portion in which the bore is located.

10. The hollow porous anchor assembly of claim 1, wherein the diameter of the anchor is between 3-6 mm.