CN111904501A

CN111904501A - Anchor nail implanting device

Info

Publication number: CN111904501A
Application number: CN202010921096.0A
Authority: CN
Inventors: 史春宝; 付中国; 李红霞; 吴增光
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2020-11-10

Abstract

The invention belongs to the technical field of medical instruments and discloses an anchor implantation device. The anchor implant according to the invention comprises: the implantation rod is used for being detachably connected with the anchoring nail, a hollow channel axially penetrates through the implantation rod is formed in the implantation rod, the hollow channel is configured to be communicated with the hollow hole axially penetrating through the anchoring nail, and when the anchoring nail is connected with the implantation rod, the hollow channel and the hollow hole jointly form an insertion channel for inserting the external positioning needle. The anchor implantation device can accurately position the anchor in the positioning hole which is arranged in advance.

Description

Anchor nail implanting device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an anchor nail implanter.

Background

When the soft tissue of the body is torn from the bone and needs repair, a surgeon often inserts a threaded anchor into the bone using an anchor implanter to secure the soft tissue to the bone with a suture.

In operation, to ensure the accuracy of positioning the anchor on the bone, a positioning hole is usually pre-drilled on the bone, and a positioning needle is inserted into the positioning hole to prevent the pre-drilled positioning hole from being found when the anchor implanter is inserted into the anchor.

Disclosure of Invention

The invention provides an anchor implantation device, which aims to enable an anchor to be accurately positioned in a positioning hole which is formed in advance.

The anchor implant according to the invention comprises: the implantation rod is used for being detachably connected with the anchoring nail, a hollow channel axially penetrates through the implantation rod is formed in the implantation rod, the hollow channel is configured to be communicated with the hollow hole axially penetrating through the anchoring nail, and when the anchoring nail is connected with the implantation rod, the hollow channel and the hollow hole jointly form an insertion channel for inserting the external positioning needle.

Further, implant the pole including be used for with the anchor can dismantle the linkage segment of being connected and with linkage segment integrated into one piece's handle section to and fixed connection is at linkage segment or handle section on drawing drum, wherein, hollow channel link up linkage segment and handle section simultaneously, the external diameter size of drawing drum is greater than the external diameter size of handle section.

Further, the drawing drum is formed at the joint of the connecting section and the handle section, wherein the outer diameter of the handle section is larger than that of the connecting section.

Further, pay off reel includes the dish body and follows a plurality of tight line grooves of the circumferential interval setting of the dish body.

Further, the anchor implant device also comprises an anchor detachably connected with the implant rod, one of the connecting section of the implant rod and the anchor is provided with a connecting prism, the other one of the connecting section of the implant rod and the anchor is provided with a connecting groove matched with the connecting prism, and the hollow channel simultaneously penetrates through the connecting prism and the connecting groove.

Further, the anchor bolt comprises a first insertion section connected with the connecting section and a second insertion section connected with the first insertion section, the first insertion section is arranged to be cylindrical, the second insertion section is arranged to be conical, wherein the outer surface of the first insertion section is formed with an external thread, and the external thread comprises a plurality of single-turn threads formed at intervals.

Further, the anchor further comprises a first threading hole radially penetrating the first insertion section, the anchor implant further comprises a threading part for passing the suture through the first threading hole, the threading part comprises an operating handle and a threading ring fixedly connected with the operating handle, and the threading ring is configured to be deformable, so that when the threading part is inserted into the first threading hole, the threading ring is changed into a thread-like shape for inserting the first threading hole, and after the threading ring is inserted into the first threading hole, the threading ring can be changed into a ring shape for inserting the suture.

Further, the first threading hole is not communicated with the hollow hole of the anchor.

Further, the anchor comprises at least one pair of second threading holes formed in the peripheral wall of the anchor, and each pair of second threading holes comprises two sub-threading holes arranged at intervals along the axial direction of the peripheral wall of the anchor.

Further, the second threading hole is not communicated with the hollow hole of the anchor.

Compared with the prior art, the anchor implantation device has the following advantages:

1) the hollow channel is formed in the implantation rod, so that the hollow channel and the hollow hole of the anchor jointly form an insertion channel for inserting an external positioning needle, the positioning needle is not required to be pulled out before the anchor is inserted into the positioning hole by an operator, the anchor can be accurately positioned along the positioning needle and fixed in the positioning hole which is punched in advance, and the problem that the anchor is difficult to align to the positioning hole which is punched in advance due to the fact that the positioning needle needs to be removed before the anchor is inserted into the positioning hole in the prior art to cause tendon rebound contraction or intraoperative hemorrhage is avoided.

2) The implantation rod has higher structural strength and longer service life by arranging the integrally formed connecting section and the handle section; through setting up drawing drum taut suture on the one hand to improve the joint strength of suture, on the other hand still can be convenient for comb many sutures, thereby avoid many sutures the phenomenon of knoing to appear, so that operating personnel arranges the suture of different roots in different positions.

3) Through the detachable connection mode of the connecting prism and the connecting groove, the inserting rod is connected with the anchor or separated from the anchor, only acting force towards or away from the anchor needs to be applied to the implanting rod, namely the implanting rod does not need to be rotated like the prior art, and therefore the condition that a suture is rotated or knotted can not occur.

4) The hollow hole through setting up threading hole and anchor nail does not communicate and makes threading hole and hollow hole form two independent passageways, and the pilot pin can not interfere each other with the suture, the operation of being convenient for.

Drawings

FIG. 1 is a schematic view of an anchor implant according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the anchor implanter and anchor installation of FIG. 1 in accordance with the embodiments of the invention;

FIG. 3 is a schematic structural view of a first embodiment of the anchor stud shown in FIG. 2;

FIG. 4 is a front view of the anchor stud shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view taken at A-A of the anchor of FIG. 4;

fig. 6 is a schematic structural view of a second embodiment of the anchor stud shown in fig. 2.

Detailed Description

For a better understanding of the objects, structure and function of the invention, the anchor implant of the present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 shows a configuration of an anchor implant 100 according to an embodiment of the present invention, and in conjunction with fig. 2, the anchor implant 100 includes: the implant rod 1 is used for being detachably connected with an anchoring nail 2, a hollow channel 11 axially penetrates through the implant rod 1 is formed in the implant rod 1, and the hollow channel 11 is configured to be communicated with a hollow hole 26 (shown in figure 2) axially penetrating through the anchoring nail 2, so that when the anchoring nail 2 is connected with the implant rod 1, the hollow channel 11 and the hollow hole 26 jointly form an insertion channel for inserting an external positioning needle.

In the actual operation process, firstly, an operator pre-opens a positioning hole on the bone of the patient, and inserts a positioning needle into the positioning hole to indicate the specific position of the anchor to be inserted, when the anchor implanter 100 of the embodiment is used, the operator aligns the hollow hole 26 with the positioning needle, and operates the anchor implanter 100 to move towards the direction of the positioning needle, so that the positioning needle penetrates into an insertion channel formed by the hollow hole 26 and the hollow channel 11 together, and further the anchor 2 enters the pre-opened positioning hole along the insertion direction of the positioning needle, when the position of the anchor 2 is determined, the positioning needle can be pulled out from the tail end of the hollow channel 11 shown in fig. 1, and finally, the anchor 2 is fixed in the positioning hole.

The anchor implanting device 100 of the embodiment forms the hollow channel 11 in the implanting rod 1 so that the hollow channel 11 and the hollow hole 26 of the anchor 2 jointly form an insertion channel for inserting the external positioning needle, so that an operator does not need to pull out the positioning needle before inserting the anchor 2 into the positioning hole, the anchor 2 can be accurately positioned along the positioning needle and fixed in the positioning hole which is drilled in advance, and the problem that the anchor 2 is difficult to align with the positioning hole which is drilled in advance due to the fact that the positioning needle needs to be removed before inserting the positioning hole in the prior art, so that tendon rebounding shrinkage or intraoperative hemorrhage is caused by the anchor 2 is avoided.

Referring to fig. 1 and 2, the implanting rod 1 may include a connecting section 12 for detachable connection with the anchor bolt 2, a handle section 13 integrally formed with the connecting section 12, and a pay-off reel 14 fixedly connected to the connecting section 12 or the handle section 13, wherein the hollow passage 11 penetrates both the connecting section 12 and the handle section 13, and the size of the outer diameter of the pay-off reel 14 is larger than that of the outer diameter of the handle section 13. The connecting section 12 and the handle section 13 which are integrally formed are arranged, so that the implantation rod 1 has higher structural strength and longer service life. In the process of suturing bones and tendons or soft tissues, after an anchor with a plurality of sutures is implanted into a positioning hole, the free end of each suture passes through the tendon or soft tissue to be sutured and then is placed on a pay-off reel 14, the pay-off reel 14 is convenient for tensioning the sutures on one hand, particularly for enabling the plurality of sutures to be tensioned in a cross mode so as to improve the connection strength of the sutures on the other hand, and is also convenient for carding the plurality of sutures on the other hand, thereby avoiding the knotting phenomenon of the plurality of sutures, and facilitating an operator to place the sutures of different roots in different positions.

In the embodiment shown in fig. 1, a payout reel 14 may be formed at the junction of the connector segment 12 and the handle segment 13, wherein the outer diameter dimension of the handle segment 13 may be greater than the outer diameter dimension of the connector segment 12. Make the junction of linkage segment 12 and handle section 13 form the ladder that can butt drawing drum 14 through this setting, drawing drum 14 passes linkage segment 12 and is fixed with handle section 13 butt, and this ladder is used for increasing drawing drum 14 and handle section 13's area of contact, consequently has better connection stability.

As shown in fig. 2, payout reel 14 may include a reel body 141 and a plurality of tension grooves 142 disposed at intervals along the circumferential direction of reel body 141. Through this setting make many sutures of wearing out from tendon or soft tissue can place respectively in the tight line groove of difference and be tightened up, prevent to appear because of many suture winding knot or the insecure problem of connection that the suture is not tightened up and arouses.

In a preferred embodiment, the cinch slots 142 have a tapered width extending from the peripheral edge of the disc body 141 toward the center of the disc body 141, which arrangement enables the suture to be quickly and easily advanced into the cinch slot 142 and ultimately placed in compression at the bottom of the cinch slot 142.

Referring to fig. 1 to 3, the anchor implant 100 may further include an anchor 2 detachably connected to the implant rod 1, one of the connection section 12 of the implant rod 1 and the anchor 2 may have a connection prism 121 formed thereon, and the other may have a connection groove 23 (shown in fig. 6) formed thereon to be fitted with the connection prism 121, and the hollow passage 11 may extend through both the connection prism 121 and the connection groove 23. The threaded connection commonly used in the prior art connects the anchor stud 2 and the implant stud 1, which results in rotating the implant stud 1 to connect or disconnect the implant stud 1 and the anchor stud 2, thereby driving the suture in the anchor stud 2 to rotate, and finally causing the suture to be knotted. In the embodiment, the detachable connection mode of the connection prism 121 and the connection groove 23 is arranged, so that in the process of connecting or disconnecting the insertion rod 1 and the anchor bolt 2, only the acting force towards or away from the anchor bolt 2 is applied to the implantation rod 1, that is, the implantation rod 1 does not need to be rotated as in the prior art, and therefore, the suture can not be rotated or knotted.

Preferably, as shown in fig. 1, the connection prism 121 may be formed on the connection section 12, and the connection groove 23 may be formed on the anchor stud 2; it is further preferred that the connecting prisms 121 have an outer diameter dimension that gradually decreases from the fixed end connected to the connecting section 12 toward the end away from the connecting section 12. When the anchor 2 is fixed in the positioning hole, an external force towards the direction of the anchor 2 needs to be applied to the implantation rod 1, and through the arrangement, when the anchor 2 is fixed in the positioning hole, the connection prism 121 is gradually pressed down in the connection groove 23, so that the connection between the connection prism and the connection groove is more sufficient, and the implantation rod 1 is more stably connected with the anchor 2; when the implantation rod 1 needs to be separated from the anchor nail 2, the small-diameter end of the connecting prism 121 moves towards the large-diameter end of the connecting groove 23, so that the two can be conveniently separated.

According to the present invention, the implantation rod 1 of the anchor implanter 100 may be used to implant either the outer row of anchors 2 as shown in fig. 3 or the inner row of anchors 2' as shown in fig. 6. When the anchor implanter 100 of the embodiment is used, the inner row of anchors 2 'with the suture needs to be fixed in the inner row of positioning holes which are pre-opened, then the free ends of the suture are penetrated into the tendons or the soft tissues for suturing, the suture is tightened after the suture is sewed, so that the suture drives the tendons or the soft tissues to cover the inner row of anchors 2', then the outer row of positioning holes are opened on the bone which is not covered with the tendons or the soft tissues, the tightened suture is penetrated into the outer row of anchors 2, and then the outer row of anchors 2 are inserted and fixed in the outer row of positioning holes to complete the suture fixation.

According to the anchor implant 100 of the embodiment of the present invention as shown in fig. 3, the anchor 2 of the outer row may include a first insertion section 21 connected to the connecting section 12 and a second insertion section 22 connected to the first insertion section 21, the first insertion section 21 may be provided in a cylindrical shape, and the second insertion section 22 may be provided in a tapered shape, wherein an outer surface of the first insertion section 21 may be formed with an external thread 211, and the external thread 211 may include a plurality of single turns of threads formed at intervals. The conical second insertion section 22 can facilitate the preliminary positioning of the anchor bolt 2 in the positioning hole, and the cylindrical first insertion section 21 can further enable the anchor bolt 2 to go deep into the positioning hole under the action of external force, so that the connection between the anchor bolt 2 and the positioning hole is firmer. Here, the following are mentioned: the "single-turn thread" means a closed-loop thread formed on the same horizontal plane, and after the anchor 2 is fixed in the positioning hole, the operator can directly knock the implant rod 1 so that the first insertion section 21 and the second insertion section 22 are inserted and fixed in the outward-arranged positioning hole.

Of course, the thread line of the external thread 211 can also be an oblique thread line, in which case the oblique thread line is formed as a whole thread line at one time, and the operator can also rotate the implantation rod 1 to screw the first insertion section 21 and the second insertion section 22 into the positioning hole. The mode of rotating the implantation rod 1 to fix the anchor nail 2 is relatively labor-saving; the mode of beating the implantation rod 1 and the anchor bolt 2 is simple to operate, and meanwhile, the knotting phenomenon which can occur to the suture due to rotation can be avoided.

As shown in fig. 3-5, the anchor implant 2 may further include a first threading hole 24 radially extending through the first insertion section 21, the anchor implant 100 may further include a threading member 3 (shown in fig. 2) for threading a suture through the first threading hole 24, the threading member 3 may include a handle 31 and a loop 32 fixedly connected to the handle 31, and the loop 32 may be configured to be deformable such that when the threading member 3 is inserted into the first threading hole 24, the loop 32 is deformed into a strip shape for insertion into the first threading hole 24, and when the loop 32 is inserted into the first threading hole 24, the loop is deformed into a loop shape for insertion of the suture. Because the size of outer row anchor nail 2 is smaller, and the aperture of first threading hole 24 is also smaller, therefore the manual degree of difficulty of threading the suture of operating personnel is great, can be convenient for operating personnel to pass first threading hole 24 with the suture through this setting, improves operation efficiency.

Preferably, first threader hole 24 may not communicate with hollow bore 26 of anchor 2. By this arrangement, the first threading hole 24 and the hollow hole 26 are formed as two independent passages, and the positioning needle axially passing through the insertion passage and the suture radially passing through the first insertion section 21 do not interfere with each other, thereby facilitating the operation.

Of course, as shown in fig. 5, the first threading hole 24 may also communicate with the hollow hole 26 of the anchor stud 2, the axis of the first threading hole 24 is parallel to the straight line of the diameter of the anchor stud 2, and the positioning needle axially passing through the insertion passage and the suture radially passing through the first insertion section 21 may not interfere with each other by properly setting the diameter of the hollow hole 26. For example, since the diameter of the positioning needle is generally 1-2mm, and the diameter of the suture is less than 1mm, when the diameter of the hollow hole 26 is set to 3mm, the suture can be passed through after the positioning needle is inserted into the hollow hole 26, and the two do not interfere with each other.

Fig. 6 shows the configuration of the inner row anchor stud 2'. The difference from the anchor 2 of the anchor row shown in fig. 3-5 is that the anchor 2 ' of the anchor row may include at least one pair of second threader holes 25 formed in the peripheral wall of the anchor 2 ' of the anchor row, and each pair of second threader holes 25 may include two sub threader holes axially spaced along the peripheral wall of the anchor 2 ' of the anchor row. By this arrangement, the suture can be passed directly through one of the second threading holes 25 and out of the other, the suture does not pass radially through the hollow hole 26, and the positioning needle does not interfere with the suture.

Preferably, the second threading aperture 25 may not communicate with the hollow aperture 26 of the inner row anchor 2'. Through the arrangement, the second threading hole 25 and the hollow hole 26 form two independent channels, and the positioning needle and the suture cannot interfere with each other, so that the operation is convenient.

In the embodiment shown in fig. 6, two pairs of the second threading holes 25 are provided, two sub-threading holes of each pair of the second threading holes 25 may be respectively disposed oppositely, and the two corresponding sub-threading holes of each pair of the second threading holes 25 penetrate through the first insertion section 21, so that the second threading holes 25 communicate with the hollow holes 26 of the female anchor 2'. This way the manufacturing process is simple, only need to make two through holes on the outer wall of the first insertion section 21, because the suture is axially arranged, therefore will not interfere with the positioning needle.

In a preferred embodiment, the different pairs of second threading holes formed at different locations are offset to allow the suture to pass through different regions of the first insertion section 21, helping to better secure the suture in the positioning hole. Preferably, the anchor nail 2 can be made of materials such as biological composite materials, high-performance special engineering plastics, stainless steel metal and titanium metal. The operator can select the anchor bolts 2 made of different materials according to the requirement. Since the implant rod 1 is not implanted in the human bone or soft tissue for a long period of time, the implant rod 1 may be made of a stainless steel material having a low cost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. An anchor implant, comprising:

an implant rod for detachable connection with an anchor, the implant rod having a hollow passage formed therein extending axially therethrough, the hollow passage being configured to communicate with a hollow bore extending axially therethrough, such that when the anchor is connected with the implant rod, the hollow passage and the hollow bore together form an insertion passage for insertion of an external locator needle.

2. The anchor implant of claim 1, wherein the implant rod includes a connector section for detachable connection with the anchor and a handle section integrally formed with the connector section, and a payout reel fixedly connected to either the connector section or the handle section, wherein the hollow passage extends through both the connector section and the handle section, the payout reel having an outer diameter dimension that is greater than an outer diameter dimension of the handle section.

3. The anchor implant of claim 2, wherein the payout reel is formed at a junction of the connecting section and the handle section, wherein an outer diameter dimension of the handle section is greater than an outer diameter dimension of the connecting section.

4. The anchor implant as recited in claims 2 or 3, wherein the payout reel includes a reel body and a plurality of cinching slots spaced circumferentially along the reel body.

5. An anchor implant as claimed in claim 2 or 3, further comprising an anchor detachably connected to the implant rod, one of the connection section of the implant rod and the anchor having a connection prism formed thereon and the other having a connection recess formed thereon for mating with the connection prism, the hollow passage extending through both the connection prism and the connection recess.

6. The anchor implant of claim 5, wherein the anchor includes a first insertion section connected to the connecting section and a second insertion section connected to the first insertion section, the first insertion section being configured in a cylindrical shape and the second insertion section being configured in a tapered shape, wherein an outer surface of the first insertion section is formed with an external thread including a plurality of single turns of threads formed at intervals.

7. An anchor implant as defined in claim 6, wherein the anchor further includes a first threader radially extending through the first insertion section, the anchor implant further including a threading member for passing a suture through the first threader, the threading member including a handle and a threader fixedly connected to the handle, the threader configured to be deformable such that when the threading member is inserted into the first threader, the threader loop is changed to a threader for insertion into the first threader and when the threader is inserted into the first threader, the threader loop is changed to a loop for insertion of a suture.

8. The anchor implant of claim 7, wherein the first threader hole is not in communication with the hollow bore of the anchor.

9. The anchor implant of claim 5, wherein the anchor includes at least one pair of second threader holes formed in the peripheral wall of the anchor, each pair of the second threader holes including two sub threader holes axially spaced along the peripheral wall of the anchor.

10. The anchor implant of claim 9, wherein the second threader hole is not in communication with the hollow bore of the anchor.