A suture anchor implantation device

Abstract

The present application relates to a kind of suture anchor implantation device, including self-drilling rod body (1), nail body (2), suture anchor (5) and fixed suture (6);Two suture grooves (8) are formed on the outer surface of self-drilling rod body (1) along the length direction;Nail body (2) is keyed to one end of self-drilling rod body (1);Through hole I (12) is provided on nail body (2), and one end of nail body (2) is pointed end;Suture anchor (5) and fixed suture (6) are all passed through through hole I (12), and the two ends of fixed suture (6) are respectively passed out along two suture grooves (8), and the two ends of suture anchor (5) are free end.The suture anchor implantation device of the present application can automatically knot during implantation, without subsequent pulling suture knot;Knot position is fixed, and knot displacement will not occur;Hole depth is relatively shallow, and bone removal amount is small;Interference between hole and hole is smaller, and the number of anchor points that can be implanted per unit area is more, and the range of optional area of operation is wide.

Description

[0001] The application is a divisional application of the patent application No. 202110152501.1 with the title of a suture anchor implant device filed on February 4, 2021 by the applicant Hangzhou Ruijian Mustang Medical Instrument Co., Ltd. TECHNICAL FIELD

[0002] The application belongs to the technical field of suture anchors and relates to a suture anchor implant device. BACKGROUND

[0003] With the development of orthopedic sports medicine, shoulder rotator cuff repair surgery, hip labrum repair surgery and other damage repair surgeries are getting more and more attention and application. The common method of repair surgery is to implant an anchor into the bone, and to fix the damaged tendon or other tissue to the bone through the suture on the anchor. The anchor is in the form of a titanium alloy anchor, a PEEK anchor and other rigid anchors, and a full-suture anchor developed recently, which is flexible. At present, the full-suture anchor needs to be drilled on the bone during the implantation process, and then the suture anchor is implanted into the hole, or the suture anchor is directly hammered into the bone by using an inserter with a suture anchor, or the suture anchor is drilled into the bone by using a self-drilling suture anchor inserter. Finally, the suture anchor needs to be pulled to make the suture anchor in the bone hole into a knot, and the transverse diameter (perpendicular to the center axis of the bone hole) of the suture anchor after knotting is increased to be clamped in the bone to complete the fixation of the bone, and the suture on the anchor is fixed to the tendon or other tissue through a wire passing device.

[0004] The existing technology is to pull the suture to tighten after the suture anchor enters the bone, and the knot will move up after tightening. The fixed position of the knot has a certain randomness, leaving a bone cavity below, and the amount of bone removed is large. At the same time, the pre-drilled hole, the knock-in or the self-drilling hole needs to enter the relatively deep position of the bone in order to reserve the displacement of the knot, and the deeper the hole, the greater the interference between the holes, so the number of anchor points implanted per unit area is also limited to a certain extent. In addition, due to the limitation of knot size and material, the fixing strength is also limited to a certain extent. At the same time, the pre-drilled hole method needs the suture anchor to be aligned with the pre-drilled hole when implanted into the bone hole, which may deviate and cause the suture anchor to be unable to be inserted and deployed, so that a new pre-drilled hole needs to be drilled. The knock-in method needs to hammer the inserter, which may cause additional damage, especially to smaller bones, which may cause bone fractures.

[0005] Therefore, it is of great significance to study a new suture anchor implant device. SUMMARY

[0006] The purpose of the present application is to solve the above-mentioned problems existing in the prior art, and to provide a suture anchor implant device. The technical problem to be solved by the present application is to provide a suture anchor implant device formed by drilling, friction and automatic knotting in one operation. The device integrally completes the implantation and knotting of the suture anchor, has small bone removal amount, accurate anchor positioning, high fixation strength, more anchor points per unit area, can save time, reduce bone defects, reduce the probability of surgical failure caused by positioning deviation, reduce the risk of implant extrusion, expand the surgical area, greatly improve the surgical efficiency, precision, range and quality, and at the same time reduce the damage to the human body, which is beneficial to the rapid recovery of the patient.

[0007] To achieve the above-mentioned purposes, the present application adopts the following solutions:

[0008] A suture anchor implant device, comprising a self-drilling rod body, a nail body, a suture anchor and a fixed suture;

[0009] Two suture grooves are formed on the outer surface of the self-drilling rod body along the length direction; the nail body is connected to one end of the self-drilling rod body; a through hole I is provided on the nail body, and one end of the nail body is a sharp end, i.e. a drill tip;

[0010] The suture anchor and the fixed suture pass through the through hole I, and the two ends of the fixed suture pass out along the two suture grooves, respectively; the two ends of the suture anchor are free ends.

[0011] As a preferred technical solution:

[0012] As described above, the material of the self-drilling rod body is metal, such as stainless steel, titanium alloy, nickel-titanium alloy, etc.; the material of the nail body is biodegradable and absorbable material, such as left-handed poly-lactic acid, right-handed poly-lactic acid, racemic poly-lactic acid, lactic acid-hydroxy glycol copolymer or its mixture with tricalcium phosphate, hydroxyapatite, magnesium alloy, etc.; the material of the nail body of the present application can also be biologically non-degradable and absorbable material, such as biologically non-degradable and absorbable material, such as stainless steel, titanium alloy, nickel-titanium alloy, PEEK, etc.

[0013] As described above, the nail body is connected to one end of the self-drilling rod body, which means that one end of the nail body is inserted into one end of the self-drilling rod body; one end of the self-drilling rod body is a columnar body structure with a polygonal or plum blossom shaped cross section, and one end of the nail body is provided with a polygonal or plum blossom shaped channel matched with the columnar body structure.

[0014] As described above, the polygon is rectangular or hexagonal.

[0015] As described above, one end of the self-drilling rod body away from the nail body is a drill handle connected with an electric device; the suture anchor and the fixed suture are entangled and then pass through the through hole I.

[0016] The suture anchor implanting device as described above, further comprising a suture anchor helical groove member;

[0017] The suture anchor helical groove member is a hollow cylinder with helical grooves on the outer sidewall;

[0018] The self-drilling rod body, the suture anchor helical groove member and the nail body are sequentially keyed connected;

[0019] Alternatively, the suture anchor helical groove member and the nail body are integrally formed, and the integrally formed member is keyed connected with the self-drilling rod body.

[0020] The suture anchor implanting device as described above, the helical groove has a helix angle of 5°-45°. If the helix angle is too small, the friction between the suture anchor and the helical groove member will be too large, thereby hindering the suture anchor from sliding in the helical groove to the forward end to gather, the longitudinal dimension of the formed helical knot becomes longer and the transverse dimension becomes narrower, and the fixing strength is reduced. If the helix angle is too large, the friction between the suture anchor and the helical groove member will be too small, the suture anchor slides in the helical groove to the forward end to gather too fast, and the expansion effect generated by the friction between the suture anchor and the bone wall lags behind, thereby resulting in that the helical knot cannot be formed in order. The helix angle in the range of 5°-45° is considered to be a suitable angle suitable for forming a helical knot with high fixing strength in order.

[0021] The suture anchor implanting device as described above, the inside of the suture anchor helical groove member is provided with a through hole II along the direction of the height of the cylinder;

[0022] The suture anchor and the fixed suture form a three-section combined wire, the first section and the third section are fixed sutures, and the second section is a suture anchor;

[0023] The suture anchor of the second section is connected with the first section and the third section by sewing or weaving, or the suture anchor of the second section is a hollow structure, and the suture anchor is sleeved on the fixed suture;

[0024] One end of the three-section combined wire sequentially passes through a wire containing groove of the self-drilling rod body, the through hole II and the through hole I from the drill handle to the nail body, and the three-section combined wire that passes out of the through hole I is wound on the helical groove from the nail body to the drill handle and placed in another wire containing groove; the suture anchor of the second section is located on the helical groove.

[0025] When the suture anchor of the second section is connected with the first section and the third section by sewing or weaving, the cross-sectional area of the suture anchor > the cross-sectional area of the fixed suture.

[0026] The suture anchor implantation device according to any one of the above, further comprising a wire clamp; the wire clamp is a hollow structure, a wire pressing groove is formed on the inner side wall of the wire clamp; the wire clamp is sleeved or fixedly arranged on the self-drilling rod body, and the specific manner in which the wire clamp is fixedly arranged on the self-drilling rod body is that pin holes are arranged on the wire clamp and the self-drilling rod body, and a pin is used to pass through the pin holes of the two to be fixed; a threaded hole is arranged on the wire clamp, and a locking screw is screwed into the threaded hole to be fixed; the wire pressing groove is arranged in the wire containing groove, and the two are in clearance fit.

[0027] The principle of the present application is:

[0028] The suture anchor implantation device of the present application can automatically form a knot through the friction between the suture anchor and the bone wall: during the drilling process of the device, the nail body simultaneously performs rotating and downward movement, the distal end of the suture anchor at the position of the nail groove (i.e. the through hole I) of the nail body first contacts the bone wall of the drilled hole, the suture anchors on both sides of this position simultaneously move towards the axial direction pointing to the tip and the transverse direction opposite to the drilling rotation under the action of the friction with the bone wall, the transverse area of the suture anchor at this position increases under the condition of the same height, and at the same time, the suture anchor is twisted to form a wrinkle due to the simultaneous movement in two directions. After rapidly drilling to the required depth, the transverse area of the suture anchor at the position of the nail groove is larger, and the suture anchor has a wrinkle due to the twisting, so the friction between this position and the bone wall is larger, the hole diameter rapidly expands, and the other parts of the suture anchor are driven to move close to the position of the nail groove in a spiral form (the structure with a spiral groove plays a spiral guiding role, so that the spiral knot formation is more orderly), which causes the transverse diameter of the suture anchor at this position to expand, thereby causing the hole diameter at this position to expand again, and so on, finally forming a spiral knot gathered near the position of the nail groove.

[0029] The prior art is to first place the suture anchor with a fixed suture into a hole, at this time the suture anchor is in a free state, and needs to be pulled by hand to fix the suture, drive the suture anchor to move upward in the hole and shrink, the transverse size of the suture anchor gradually increases and is pressed against the bone wall to form a knot, the resistance increases, and when the resistance is greater than the pulling force of the fixed suture, the suture anchor is fixed. In this process, the suture anchor moves upward in the hole, so the hole depth needs to be deeper than the predetermined knot formation position, and the bone removal amount is large. The present application automatically completes the knot formation action during the drilling process, and does not need to pull the fixed suture, so the hole depth can be controlled to be shallower, and the bone removal amount is smaller. At the same time, the prior art relies on manual pulling, and the increase in the transverse size of the suture anchor to form a knot is limited, and the fixing strength is limited within the pulling force, while the present application can be rotated by an electric tool to increase the torque, so that the transverse size of the suture anchor to form a knot is larger, and the fixing strength is higher.

[0030] The working principle of the suture anchor implantation device of the present application is:

[0031] The suture anchor implantation device handle part of the application is loaded into an electric tool, a suitable surgical bone surface position is selected, drilled to the required depth, and then slightly stopped to make the suture anchor automatically form a spiral knot. The suture anchor has been completely inserted into the bone tissue, and then the self-drilling rod body is extracted, so that the nail body and the suture anchor form a composite spiral suture anchor fixed in the bone, and the fixed suture is fixed to the tendon or other soft tissue or device by a suitable tool, forming the fixation of the bone and the tendon or other soft tissue or device.

[0032] Advantages

[0033] The suture anchor implantation device of the application can automatically form a knot during implantation, without subsequent pulling of the suture to form a knot. The knot position is fixed and will not displace. The hole depth is relatively shallow, the bone removal amount is small, the hole-to-hole interference is small, the number of anchor points that can be implanted per unit area is larger, the operation can be selected in a wide range, and the knot is formed by friction during knotting, with greater stress, more dense knotting, larger transverse size, and part of the rigid body remaining in the bone, with higher fixation strength, greatly improving the operation efficiency, precision, range and quality, while reducing the damage to the human body, and facilitating the rapid recovery of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The assembly structure diagram of the suture anchor implantation device is shown.

[0035] Figure 2 The exploded view of the suture anchor implantation device is shown.

[0036] Figure 3 The detail view of the self-drilling rod body is shown.

[0037] Figure 4 The detail view of the nail body is shown.

[0038] Figure 5 The detail view of the wire clamp and assembly is shown.

[0039] Figure 6 The assembly detail view of the suture anchor and the fixed suture is shown.

[0040] Figure 7 The assembly detail view of the suture anchor with two fixed sutures is shown.

[0041] Figure 8 The assembly structure diagram of the suture anchor implantation device with a spiral groove is shown.

[0042] Figure 9 The exploded view of the suture anchor implantation device with a spiral groove is shown.

[0043] Figure 10 The detail view of the self-drilling rod body with a spiral groove is shown.

[0044] Figure 11 The detail view of the nail body is shown.

[0045] Figure 12 Assembling details of suture anchor and fixed suture;

[0046] Figure 13 Assembling details of suture anchor, fixed suture and self-drilling rod body, nail body;

[0047] Figure 14 Drilling into knot schematic diagram;

[0048] Figure 15 Final knot schematic diagram.

[0049] Wherein, 1-self-drilling rod body, 2-nail body, 3-wire clamp, 4-pin, 5-suture anchor, 6-fixed suture, 7-columnar body structure, 8-wire containing groove, 9-pin hole, 10-drill handle, 11-drill tip, 12-through hole I, 13-channel, 14-wire pressing groove, 15-spiral groove, 16-through hole II. DETAILED DESCRIPTION

[0050] The application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the application and not used to limit the scope of the application. Furthermore, it should be understood that after reading the content taught by the application, those skilled in the art can make various modifications or changes to the application, and these equivalent forms also fall within the scope defined by the appended claims.

[0051] A suture anchor implanting device comprises a self-drilling rod body, a nail body, a suture anchor and a fixed suture;

[0052] Two wire containing grooves are formed on the outer surface of the self-drilling rod body along the length direction; the nail body is keyed to one end of the self-drilling rod body; the nail body is provided with a through hole I, and one end of the nail body is a pointed end, i.e. a drill tip;

[0053] The suture anchor and the fixed suture both pass through the through hole I, and the two ends of the fixed suture pass out along the two wire containing grooves respectively, and the two ends of the suture anchor are free ends.

[0054] As a preferred technical solution:

[0055] The material of the self-drilling rod body is metal, such as stainless steel, titanium alloy, nickel-titanium alloy, etc., and the material of the nail body is biodegradable and absorbable material, such as levorotatory polylactic acid, dextrorotatory polylactic acid, meso-polylactic acid, lactic acid-hydroxyethanol acid copolymer or a mixture thereof with tricalcium phosphate, hydroxyapatite, magnesium alloy, etc.; the material of the nail body of the application can also be biologically non-degradable and absorbable material, such as biologically non-degradable and absorbable material, such as stainless steel, titanium alloy, nickel-titanium alloy, PEEK, etc.

[0056] The key connection between the nail body and the one end of the self-drilling rod body means that one end of the nail body is inserted into one end of the self-drilling rod body; the one end of the self-drilling rod body is a columnar body structure with a polygonal or plum blossom shaped cross section, and the one end of the nail body inserted into the self-drilling rod body is provided with a polygonal or plum blossom shaped channel matched with the columnar body structure.

[0057] The polygonal shape is rectangular or hexagonal.

[0058] The one end of the self-drilling rod body away from the nail body is a drill handle connected with the electric device; the suture anchor and the fixed suture are entangled and then pass through the through hole I.

[0059] The suture anchor implantation device further comprises a suture anchor helical groove member;

[0060] The suture anchor helical groove member is a hollow cylinder with a helical groove on the outer sidewall;

[0061] The self-drilling rod body, the suture anchor helical groove member and the nail body are sequentially key connected;

[0062] Alternatively, the suture anchor helical groove member and the nail body are an integrally formed piece, and the integrally formed piece is key connected with the self-drilling rod body.

[0063] The helical pitch of the helical groove is 5°-45°. If the helical pitch is too small, the friction between the suture anchor and the helical groove member will be too large, thereby hindering the suture anchor from sliding in the helical groove to the front end to gather, the longitudinal size of the formed helical knot is lengthened and the transverse size is narrowed, and the fixing strength is reduced; if the helical pitch is too large, the friction between the suture anchor and the helical groove member will be too small, the suture anchor slides in the helical groove to the front end to gather too fast, and the expansion aperture effect generated by the friction between the suture anchor and the bone wall lags behind, thereby resulting in that the helical knot cannot be formed in order; the helical pitch in the range of 5°-45° is considered to be a suitable angle suitable for forming a helical knot with high fixing strength in order.

[0064] The inside of the suture anchor helical groove member is provided with a through hole II along the direction of the height of the cylinder;

[0065] The suture anchor and the fixed suture form a three-section combined wire, the first section and the third section are fixed sutures, and the second section is a suture anchor;

[0066] The suture anchor of the second section is connected with the first section and the third section by sewing or weaving; alternatively, the suture anchor of the second section is a hollow structure, and the suture anchor is sleeved on the fixed suture;

[0067] One end of the three-section composite wire passes sequentially through a groove, through hole II, and through hole I in the self-drilling rod from the drill shank to the nail body. The three-section composite wire that passes through through hole I is wound around the spiral groove from the nail body to the drill shank and placed in another groove. The second section of the thread is anchored on the spiral groove.

[0068] In the suture anchor implantation device described above, when the suture anchor of the second segment is connected to the first and third segments by sewing or weaving, the cross-sectional area of ​​the suture anchor is greater than the cross-sectional area of ​​the fixed suture.

[0069] The suture anchor implantation device as described in any of the preceding claims further includes a suture clamp; the suture clamp has a hollow structure, and a suture pressing groove is formed on the inner side wall of the suture clamp; the suture clamp is sleeved or fixedly mounted on the self-drilling rod body, and the suture clamp is fixedly mounted on the self-drilling rod body in the following specific manner: both the suture clamp and the self-drilling rod body are provided with pin holes, and a pin is used to fix them by passing through the pin holes of both; the suture clamp is provided with a threaded hole, and a set screw is screwed into the threaded hole for fixation; the suture pressing groove is placed in the suture receiving groove, and the two are clearance-fitted.

[0070] Example 1

[0071] A suture anchor implantation device, such as Figures 1-2 As shown, it includes a self-drilling rod 1 made of stainless steel, a nail body 2 made of L-hexyl polylactic acid, a suture anchor 5, a suture fixing 6, and a suture clamp 3.

[0072] Two grooves 8 are formed along the length of the outer surface of the self-drilling rod 1; the nail body 2 is keyed to one end of the self-drilling rod 1; such as Figure 4 As shown, the nail body 2 has a through hole I12, and one end of the nail body 2 is a pointed tip, namely the drill tip 11; the key connection between the nail body 2 and one end of the self-drilling rod body 1 means that one end of the nail body 2 is inserted into one end of the self-drilling rod body 1; one end of the self-drilling rod body 1 is a columnar structure 7 with a hexagonal cross-section, and the end of the nail body 2 inserted into the self-drilling rod body 1 is provided with a hexagonal channel 13 that matches the columnar structure;

[0073] like Figure 6 As shown, after the suture anchor 5 and a fixed suture 6 are entangled, they pass through the through hole I12. The two ends of the fixed suture 6 pass out along the two suture grooves 8 on their respective sides. The two ends of the suture anchor 5 are free ends.

[0074] like Figure 3 As shown, the end of the self-drilling rod 1 away from the nail body 2 is the drill shank 10, which is connected to the electric device;

[0075] like Figure 5As shown, the wire clamp 3 is a hollow structure, and a pressing wire groove 14 is formed on the inner side wall of the wire clamp 3; the wire clamp 3 is fixedly arranged on the self-drilling rod body 1, the pressing wire groove 14 is arranged in the wire accommodating groove 8, and the two are gap-fitted; the specific way of fixing the wire clamp on the self-drilling rod body is that the wire clamp and the self-drilling rod body are both provided with pin holes 9, and a pin 4 is used to pass through the pin holes of the two to be fixed.

[0076] Embodiment 2

[0077] A suture anchor implanting device comprises a self-drilling rod body 1 made of titanium alloy, a nail body 2 made of stainless steel, a suture anchor 5 and a fixed suture 6, and a wire clamp 3;

[0078] Two wire accommodating grooves 8 are formed on the outer surface of the self-drilling rod body 1 along the length direction; the nail body 2 is key-connected with one end of the self-drilling rod body 1; a through hole I12 is arranged on the nail body 2, and one end of the nail body 2 is a pointed end; the key connection of the nail body 2 with one end of the self-drilling rod body 1 means that one end of the nail body 2 is inserted into one end of the self-drilling rod body 1; one end of the self-drilling rod body 1 is a columnar body structure in the shape of a plum blossom, and one end of the self-drilling rod body 1 into which the nail body 2 is inserted is provided with a plum blossom-shaped channel matched with the columnar body structure;

[0079] As shown, Figure 7 the suture anchor 5 and the two fixed sutures 6 are intertwined and then passed through the through hole I12, the four ends of the two fixed sutures 6 are respectively passed out along the two wire accommodating grooves 8 on the side where the fixed sutures 6 are arranged, and the two ends of the suture anchor 5 are free ends.

[0080] The end of the self-drilling rod body 1 away from the nail body 2 is a drill handle 10, which is connected with an electric device;

[0081] The wire clamp 3 is a hollow structure, and a pressing wire groove 14 is formed on the inner side wall of the wire clamp 3; the wire clamp 3 is fixedly arranged on the self-drilling rod body 1, the pressing wire groove 14 is arranged in the wire accommodating groove 8, and the two are gap-fitted;

[0082] The specific way of fixing the wire clamp on the self-drilling rod body is that a threaded hole is arranged on the wire clamp, and a tight screw is screwed into the threaded hole to be fixed.

[0083] Embodiment 3

[0084] A suture anchor implanting device comprises a self-drilling rod body 1 made of nickel-titanium alloy, a nail body 2 made of racemic polylactic acid, a suture anchor 5 and a fixed suture 6, and a wire clamp 3;

[0085] Two wire accommodating grooves 8 are formed on the outer surface of the self-drilling rod body 1 along the length direction; the nail body 2 is key-connected with one end of the self-drilling rod body 1; a through hole I12 is arranged on the nail body 2, and one end of the nail body 2 is a pointed end; the key connection of the nail body 2 with one end of the self-drilling rod body 1 means that one end of the nail body 2 is inserted into one end of the self-drilling rod body 1; one end of the self-drilling rod body 1 is a columnar body structure in the shape of a plum blossom, and one end of the self-drilling rod body 1 into which the nail body 2 is inserted is provided with a plum blossom-shaped channel matched with the columnar body structure;

[0086] After the suture anchor 5 and the fixing suture 6 are tangled, they both pass through the through hole I12. The two ends of the fixing suture 6 pass out along the two thread grooves 8 on their respective sides. The two ends of the suture anchor 5 are free ends.

[0087] The end of the self-drilling rod 1 away from the nail body 2 is the drill shank 10, which is connected to the electric device;

[0088] The clamp 3 has a hollow structure, and a wire pressing groove 14 is formed on the inner side wall of the clamp 3. The clamp 3 is sleeved on the self-drilling rod body 1, and the wire pressing groove 14 is placed in the wire receiving groove 8, and the two are fitted with a clearance.

[0089] Example 4

[0090] A suture anchor implantation device, such as Figures 8-9 As shown, it includes a self-drilling rod body 1 made of stainless steel, a nail body 2 made of lactic acid-hydroxyglycolic acid copolymer, a suture anchor 5 and a suture fixing 6, a suture anchor spiral groove component, and a suture clamp 3.

[0091] Two grooves 8 are formed along the length of the outer surface of the self-drilling rod body 1; the self-drilling rod body 1, the thread anchor spiral groove component, and the nail body 2 are sequentially keyed together; the end of the self-drilling rod body 1 away from the nail body 2 is the drill shank 10, which is connected to the electric device; as shown Figure 11 As shown, the nail body 2 has a through hole I12, and one end of the nail body 2 is a pointed tip;

[0092] like Figure 10 As shown, the thread anchor spiral groove component is a hollow cylinder with a spiral groove 15 on the outer wall containing a spiral helix angle of 5°, and a through hole II 16 is provided inside along the height of the cylinder.

[0093] The seam anchor 5 and the fixing seam 6 constitute a three-section composite thread, with the first and third sections being the fixing seam 6 and the second section being the seam anchor 5;

[0094] The second section's seam anchor 5 is connected to the first and third sections by sewing;

[0095] One end of the three-section composite wire (i.e., the end of the fixing thread 6) passes sequentially through a thread-receiving groove 8, a through hole II, and a through hole I12 in the self-drilling rod body 1 from the drill shank 10 to the nail body 2. The three-section composite wire that passes through the through hole I12 is wound around the spiral groove 15 from the nail body 2 to the drill shank 10 and placed in another thread-receiving groove 8. The thread anchor 5 of the second section is located on the spiral groove 15.

[0096] When the second section's seam anchor 5 is connected to the first and third sections by sewing, the cross-sectional area of ​​the seam anchor 5 is greater than the cross-sectional area of ​​the fixed seam 6.

[0097] The clamp 3 has a hollow structure, and a wire pressing groove 14 is formed on the inner side wall of the clamp 3. The clamp 3 is sleeved on the self-drilling rod body 1, and the wire pressing groove 14 is placed in the wire receiving groove 8, and the two are fitted with a clearance.

[0098] Example 5

[0099] A suture anchor implantation device includes a self-drilling rod 1 made of stainless steel, a nail body 2 made of right-handed polylactic acid, a suture anchor 5, a suture fixing 6, a suture anchor spiral groove component, and a suture clamp 3.

[0100] Two grooves 8 are formed along the length of the outer surface of the self-drilling rod body 1; the thread anchor spiral groove component and the nail body 2 are integrally formed parts, and the integrally formed parts are keyed to the self-drilling rod body 1; the end of the self-drilling rod body 1 away from the nail body 2 is the drill shank 10, which is connected to the electric device; the nail body 2 is provided with a through hole I12, and one end of the nail body 2 is a pointed tip;

[0101] The thread anchor spiral groove component is a hollow cylinder with a spiral groove 15 on the outer wall having a spiral helix angle of 45°;

[0102] The interior of the thread anchor spiral groove component is provided with a through hole II along the height of the cylinder;

[0103] The seam anchor 5 and the fixing seam 6 constitute a three-section composite thread, with the first and third sections being the fixing seam 6 and the second section being the seam anchor 5;

[0104] The second section's seam anchor 5 is connected to the first and third sections by weaving;

[0105] One end of the three-section composite wire passes sequentially through a wire-receiving groove 8, a through hole II, and a through hole I12 in the self-drilling rod body 1 from the drill shank 10 to the nail body 2. The three-section composite wire that passes through the through hole I12 is wound around the spiral groove 15 from the nail body 2 to the drill shank 10 and placed in another wire-receiving groove 8. The second section of the thread anchor 5 is located on the spiral groove 15.

[0106] When the second section's seam anchor 5 is connected to the first and third sections by weaving, the cross-sectional area of ​​the seam anchor 5 is greater than the cross-sectional area of ​​the fixing seam 6.

[0107] The clamp 3 has a hollow structure, and a wire pressing groove 14 is formed on the inner side wall of the clamp 3. The clamp 3 is sleeved on the self-drilling rod body 1, and the wire pressing groove 14 is placed in the wire receiving groove 8, and the two are fitted with a clearance.

[0108] Example 6

[0109] A suture anchor implantation device includes a self-drilling rod 1 made of nickel-titanium alloy, a nail body 2 made of magnesium alloy, a suture anchor 5, a suture fixing 6, a suture anchor spiral groove component, and a suture clamp 3.

[0110] Two grooves 8 are formed on the outer surface of the self-drilling rod 1 along the length direction; the self-drilling rod 1, the thread anchor spiral groove component and the nail body 2 are connected in sequence by key; the end of the self-drilling rod 1 away from the nail body 2 is the drill shank 10, which is connected to the electric device; the nail body 2 is provided with a through hole I12, and one end of the nail body 2 is a pointed tip;

[0111] The thread anchor spiral groove component is a hollow cylinder with a spiral groove 15 on the outer wall having a spiral helix angle of 20°;

[0112] The interior of the thread anchor spiral groove component is provided with a through hole II along the height of the cylinder;

[0113] The seam anchor 5 and the fixing seam 6 constitute a three-section composite thread, with the first and third sections being the fixing seam 6 and the second section being the seam anchor 5;

[0114] like Figure 12 As shown, the second section's seam anchor 5 has a hollow structure, and the seam anchor 5 is sleeved on the fixed seam 6 (and the relative positions of the two are relatively fixed).

[0115] like Figure 13 As shown, one end of the three-section composite wire passes sequentially through a wire-receiving groove 8, a through hole II, and a through hole I12 in the self-drilling rod body 1 from the drill shank 10 to the nail body 2. The three-section composite wire that passes through the through hole I12 is wound around the spiral groove 15 from the nail body 2 to the drill shank 10 and placed in another wire-receiving groove 8. The second section of the thread anchor 5 is located on the spiral groove 15.

[0116] The wire clamp 3 has a hollow structure, and a wire pressing groove 14 is formed on the inner side wall of the wire clamp 3. The wire clamp 3 is fixedly mounted on the self-drilling rod body 1, and the wire pressing groove 14 is placed in the wire receiving groove 8, with the two fitting together with a clearance.

[0117] The specific method for fixing the wire clamp to the self-drilling rod body is as follows: both the wire clamp and the self-drilling rod body are provided with pin holes, and pin 4 is used to fix them by passing through the pin holes of both; the wire clamp is provided with threaded holes, and the set screw is screwed into the threaded holes for fixation; the wire pressing groove is placed in the wire receiving groove, and the two are fitted with a clearance fit.

[0118] The specific working process of the suture anchor implantation device of the present invention is as follows:

[0119] The self-drilling rod 1 is loaded onto the power tool. The positioning position on the bone surface is determined according to the surgical needs. After rapidly drilling to the required depth, due to the wrinkles at the distal end of the suture anchor 5 at the through-hole I12, and the increased lateral area of ​​the suture anchor at this position under the same height conditions, the friction with the bone wall is more intense and the frictional force is greater. The aperture at this position rapidly expands, causing the other parts of the suture anchor 5 to spirally approach the through-hole I (the structure with the spiral groove 15 acts as a spiral guide, making the spiral knot more orderly). This causes the lateral diameter of the suture anchor at this position to expand, which in turn causes the aperture at this position to expand again. This process repeats until a spiral knot is formed near the through-hole I12. Figure 14 As shown. The self-drilling rod 1, nail body 2, and the helical suture anchor 5 are removed and left in the bone, forming a novel composite helical suture anchor that acts as a bone anchor. The connected fixation suture 6 is used to fix tendons or other soft tissues or devices, such as... Figure 15 As shown.

Claims

1. A suture anchor implantation device, comprising: The self-drilling rod has a proximal end for matching with an electric actuator, a distal end having a through hole I and a drill tip, and a spiral groove is provided axially on the distal section of the self-drilling rod near the drill tip. The side of the self-drilling rod is provided with a duct groove at least partially along its length. A suture anchor made of flexible material is at least partially housed in the spiral groove. The suture anchor passes through the through hole I. After the suture anchor insertion device drills to the required depth, it pauses briefly, allowing the suture anchor to automatically form a spiral knot. A fixing suture passes through the through hole I, and its two ends exit along two thread grooves; a suture anchor is entangled with the fixing suture and passes through the through hole I; the two ends of the suture anchor are free ends. The wire clamp has a hollow structure, and a wire pressing groove is formed on the inner side wall of the wire clamp.

2. The suture anchor implantation device according to claim 1, characterized in that: The helix angle of the spiral groove is 5º~45º.

3. The suture anchor implantation device according to claim 1, characterized in that: The wire clamp is sleeved or fixedly mounted on the self-drilling rod body. When the wire clamp is fixedly mounted on the self-drilling rod body, both the wire clamp and the self-drilling rod body are provided with pin holes, and a pin is used to pass through the pin holes of both for fixation. Alternatively, the wire clamp is provided with a threaded hole, and a set screw is screwed into the threaded hole for fixation. The pressure groove is placed inside the receiving groove, and the two are fitted with a clearance.

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