Single-needle surrounding type annulus fibrosus stapler

Abstract

A single-needle surrounding type annulus fibrosus stapler, relating to the technical field of surgical instruments, and comprising: an outer tube (5). A stapler body (6) is connected to one end of the outer tube (5), and an adjustment assembly is connected to the other end of the outer tube (5); a second connection rod (7) is slidably connected in the stapler body (6); the adjustment assembly controls the second connection rod (7) to move and rotate; a needle tip (8) is threadedly connected to the second connection rod (7); a limiting recess is provided on the head of the stapler body (6); and the limiting recess corresponds to the needle tip (8). According to the stapler, by means of cooperation of the adjustment assembly, a locking assembly, the second connection rod (7), and the needle tip (8), once the adjustment assembly controls the needle tip (8) to move to an appropriate position, the locking assembly locks the needle tip (8), such that the second connection rod (7) is separated from the needle tip (8), and the stapler can be more conveniently operated in a surgical procedure, thereby improving the surgery efficiency.

Description

A single-needle fiber ring suture device Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a single-needle fiber ring suture device. Background Art

[0002] Herniated disc is a common disease among middle-aged and elderly people, and the number of patients has been increasing in recent years. The most common cause of this disease is degenerative changes in various parts of the intervertebral disc, such as the nucleus pulposus, annulus fibrosus, and cartilage plate, especially the nucleus pulposus. Under the influence of external factors, the annulus fibrosus of the intervertebral disc ruptures, and the nucleus pulposus tissue protrudes from the rupture into the posterior or spinal canal, causing irritation or compression of adjacent nerve roots, resulting in a series of clinical symptoms such as pain, limb numbness, and pain. Treatment requires disc removal surgery. After nucleus pulposus removal, suturing the annulus fibrosus incision can reduce the recurrence rate of disc herniation surgery.

[0003] Application number: 201710946185.9, discloses a disposable fiber ring suture device, including: a suture device housing, a suturing assembly and a transmission assembly. The transmission assembly includes a fixing part, a slider and a driving handle. The elastic force provided by the elastic assembly can be changed by the driving handle, which facilitates the operator to set the magnitude of the force provided by the elastic assembly to pierce the fiber ring.

[0004] In this patent, the bottom of the suture needle and the bottom end card are matched together to transmit force to the suture needle through a connecting tube. Since the force applied by each doctor is different, during the operation, the force transmitted by the connecting tube cannot be accurately controlled, and the bottom of the suture needle and the bottom end card cannot be guaranteed to be matched accurately, which may cause errors during the operation and affect the progress of the operation.

[0005] Summary of the Invention

[0006] The utility model aims to overcome the shortcomings that the cooperation between the current needle and the bottom end card is controlled by the size of the force delivered by the connecting tube, the size of the force applied to the connecting tube cannot be accurately controlled by each doctor during the operation, the operation is inconvenient, and the suturing efficiency is low, and a single-needle fiber ring suture device is proposed.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A single-needle fiber ring suture device includes an outer tube, one end of the outer tube is connected to the suture device body, the other end of the outer tube is connected to the adjustment component, a second connecting rod is slidably connected to the suture device body, the adjustment component controls the movement and rotation of the second connecting rod, a needle is threadedly connected to the second connecting rod, a limiting groove is provided on the head of the suture device body, the limiting groove is corresponding to the needle, a locking component is provided in the limiting groove, and the locking component is used to limit the rotation of the needle.

[0009] The second connecting rod and the needle are threadedly connected, and a locking assembly is disposed within the limiting groove. The locking assembly limits the rotation of the needle, thereby enabling quick separation of the second connecting rod from the needle. This facilitates quick and easy operation and improves suturing efficiency. Preferably, the locking assembly includes a protrusion disposed on the sidewall of the limiting groove, and a retaining groove is disposed on the needle. The protrusion and retaining groove are correspondingly disposed, and the protrusion and retaining groove restrict the rotation of the needle.

[0010] The protrusion is semicircular and the slot is arc-shaped, which makes it easy for the protrusion to move into the slot and limit the rotation of the needle.

[0011] Preferably, an external thread is provided at one end of the second connecting rod close to the needle, a mounting groove is provided on the needle, and an internal thread is provided on the inner wall of the mounting groove.

[0012] The setting of the internal thread and the external thread connects the needle to the second connecting rod. During the later disassembly, the needle can be separated from the second connecting rod by simply rotating the second connecting rod.

[0013] Preferably, the adjustment assembly includes a connecting shell, one end of the connecting shell is slidably connected to a push rod, the outer tube is connected to the end of the connecting shell away from the push rod, the end of the push rod close to the outer tube is connected to a first connecting rod, the end of the first connecting rod away from the push rod is connected to the second connecting rod, and the push rod controls the rotation of the first connecting rod and the movement along the length direction of the connecting shell.

[0014] The arrangement of the push rod and the first connecting rod can control the forward and backward movement and rotation of the second connecting rod, thereby facilitating the operation of the staff and improving the suturing efficiency.

[0015] Preferably, a limiting column is provided in the middle of the push rod, and a plurality of grooves are evenly provided on the outer wall of the limiting column. The grooves are arranged along the length direction of the limiting column. A limiting strip is provided in the connecting shell, and the limiting strip is located in the corresponding groove. The groove limits the rotation of the push rod.

[0016] When the limit strip is located in the groove, the groove restricts the rotation of the push rod, and it can only move forward and backward. This setting ensures that the push rod can be rotated to separate the needle from the second connecting rod only after the needle moves from the slideway into the limit groove.

[0017] Preferably, a first stop, a second stop and a third stop are provided in the connecting shell, the second stop is located between the first stop and the third stop, the first stop, the second stop and the third stop are all provided with through holes, the limiting column is located in the through hole of the second stop, the diameter of the through hole on the second stop is larger than the diameter of the through holes of the first stop and the third stop, and the through holes of the first stop and the third stop are smaller than the radius of the limiting column.

[0018] The first stopper and the third stopper block the limit column to prevent the limit column from moving out and affecting subsequent work.

[0019] Preferably, the limiting strip is located on the side wall of the second stopper through hole.

[0020] Preferably, the distance between the first stopper and the second stopper is smaller than the distance between the first stopper and the third stopper.

[0021] The distance between the first stopper and the third stopper is greater than the length of the limiting column. When the limiting column moves to a suitable position, the rotation of the entire push rod is facilitated.

[0022] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation between the adjustment component, the locking component, the second connecting rod and the needle, the adjustment component controls the needle to move to the appropriate position, and the locking component locks the needle to separate the second connecting rod from the needle, making the operation more convenient during the operation and improving the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] FIG1 is a schematic diagram of the external structure of a specific embodiment of the present invention.

[0025] FIG2 is a schematic diagram of the internal structure of a specific embodiment of the present invention.

[0026] FIG3 is a schematic structural diagram of a connecting shell in a specific embodiment of the present invention.

[0027] FIG4 is a schematic structural diagram of a push rod in a specific embodiment of the present invention.

[0028] FIG5 is a side view of the push rod in a specific embodiment of the present invention.

[0029] FIG6 is a schematic structural diagram of a needle separation in a specific embodiment of the present invention.

[0030] FIG7 is a schematic structural diagram of a stapler body in a specific embodiment of the present invention.

[0031] FIG8 is a schematic structural diagram of the connection between the second connecting rod and the needle in a specific embodiment of the present invention.

[0032] FIG9 is a schematic diagram of the suturing process in a specific embodiment of the present invention.

[0033] In the figure: 1 connecting shell, 2 push rod, 3 limiting column, 4 first connecting rod, 5 outer tube, 6 stapler body, 7 second connecting rod, 8 needle, 9 opening, 10 protrusion, 11 slot, 101 first stopper, 102 second stopper, 103 third stopper, 104 limiting strip, 201 rotating block, 301 groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0035] 1-9, a single-needle fiber ring suture device includes an outer tube 5, one end of the outer tube 5 is connected to the suture device body 6, the other end of the outer tube 5 is connected to the adjustment assembly, the suture device body 6 is slidably connected to the second connecting rod 7, the suture device body 6 is provided with a slide, the second connecting rod 7 is located in the slide, the adjustment assembly controls the movement and rotation of the second connecting rod 7, the second connecting rod 7 is threadedly connected to the needle 8, the second connecting rod 7 is provided with an external thread at one end close to the needle 8, the needle 8 is provided with a mounting groove, the inner wall of the mounting groove is provided with an internal thread, the internal thread and the external thread are provided, when separation is required, the needle 8 is locked, and the second connecting rod 7 is rotated to separate the second connecting rod 7 from the needle 8, which is convenient for disassembly. A limiting groove is provided on the head of the stapler body 6, and an opening 9 is provided in the middle of the stapler body 6. The limiting groove and the slide are located on both sides of the opening 9. In the initial position, the second connecting rod 7 and the needle 8 are both located in the slide, and the limiting groove is corresponding to the needle 8. A locking assembly is provided in the limiting groove. The locking assembly is used to limit the rotation of the needle 8 and facilitate the separation of the second connecting rod 7 and the needle 8. The locking assembly includes a protrusion 10 provided on the side wall of the limiting groove, and a card slot 11 is provided on the needle 8. The protrusion 10 is semicircular and the card slot 11 is arc-shaped, which facilitates the protrusion 10 to move into the card slot 11 to limit the rotation of the needle 8. The protrusion 10 and the card slot 11 are correspondingly provided, and the protrusion 10 and the card slot 11 limit the rotation of the needle 8.

[0036] 1-5, the adjustment assembly includes a connecting shell 1, one end of the connecting shell 1 is slidably connected to a push rod 2, an outer tube 5 is connected to the end of the connecting shell 1 away from the push rod 2, the end of the push rod 2 close to the outer tube 5 is connected to a first connecting rod 4, the end of the first connecting rod 4 away from the push rod 2 is connected to the second connecting rod 7, when the push rod 2 rotates or moves, the second connecting rod 7 is driven to move or rotate together through the first connecting rod 4, thereby adjusting the position of the needle 8, the push rod 2 controls the first connecting rod 4 to rotate and move along the length direction of the connecting shell 1, and the push rod 2 A limiting column 3 is set in the middle part, and a plurality of grooves 301 are evenly set on the outer wall of the limiting column 3. The grooves 301 are set along the length direction of the limiting column 3. A limiting strip 104 is set in the connecting shell 1. The limiting strip 104 is located in the corresponding groove 301. When the limiting column 3 moves, it will move along the limiting strip 104. The groove 301 limits the rotation of the push rod 2. This setting ensures that the push rod 2 can be rotated only after the needle 8 moves from the slide to the limiting groove, so that the needle 8 is separated from the second connecting rod 7, which facilitates the operation of medical staff and improves the efficiency of the operation.

[0037] 2-3, a first stopper 101, a second stopper 102 and a third stopper 103 are provided in the connecting shell 1, the second stopper 102 is located between the first stopper 101 and the third stopper 103, the first stopper 101, the second stopper 102 and the third stopper 103 are all provided with through holes, the limiting column 3 is located in the through hole of the second stopper 102, the through hole diameter of the second stopper 102 is larger than the diameter of the through holes of the first stopper 101 and the third stopper 103, and the through holes of the first stopper 101 and the third stopper 103 are smaller than The radius of the limiting column 3, the first stop block 101 and the third stop block 103 block the limiting column 3 to prevent the limiting column 3 from moving out and affecting the subsequent work, the limiting bar 104 is located on the side wall of the through hole of the second stop block 102, the distance between the first stop block 101 and the second stop block 102 is smaller than the distance between the first stop block 101 and the third stop block 103, and the distance between the first stop block 101 and the third stop block 103 is greater than the length of the limiting column 3. When the limiting column 3 moves to the appropriate position, it facilitates the rotation of the entire push rod 2.

[0038] During actual operation, the stapler body 6 approaches the first suture site through the fiber ring surgical incision, and the push rod 2 is pushed to make the needle 8 reach the limit groove on the stapler body 6. When the push rod 2 moves, the limit column 3 moves together until the limit column 3 is separated from the limit strip 104. At this time, the slot 11 on the needle 8 moves into the protrusion 10 on the limit groove, and the protrusion 10 limits the needle 8. Then, the push rod 2 is rotated to drive the second connecting rod 7 to rotate together through the first connecting rod 4. Since the second connecting rod 7 and the needle 8 are threadedly connected, the needle 8 cannot rotate and the needle 8 is separated from the second connecting rod 7. After the push rod 2 retreats, the connecting shell 1 is rotated to drive the stapler body 6 to reach the next suture position. The push rod 2 is pushed again to make the second connecting rod 7 reach the position of the needle 8. After rotating the push rod 2, the second connecting rod 7 is connected to the needle 8. The push rod 2 retreats, driving the needle 8 to return to the initial position, completing a complete suturing process, taking out the fiber ring suture body 6 and tying the suture thread.

[0039] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single-needle fiber ring suture device, comprising an outer tube (5), one end of which is connected to a suture device body (6), characterized in that: The other end of the outer tube (5) is connected to an adjustment component, a second connecting rod (7) is slidably connected inside the stapler body (6), the adjustment component controls the movement and rotation of the second connecting rod (7), a needle (8) is threadedly connected to the second connecting rod (7), a limiting groove is arranged on the head of the stapler body (6), the limiting groove is arranged corresponding to the needle (8), a locking component is arranged in the limiting groove, and the locking component is used to limit the rotation of the needle (8).

2. The single-needle fiber ring suture device according to claim 1, characterized in that: The locking assembly comprises a protrusion (10) arranged on the side wall of the limiting groove, a clamping groove (11) is arranged on the needle (8), the protrusion (10) and the clamping groove (11) are arranged correspondingly, and the protrusion (10) and the clamping groove (11) limit the rotation of the needle (8).

3. The single-needle fiber ring suture device according to claim 2, characterized in that: An end of the second connecting rod (7) close to the needle (8) is provided with an external thread, a mounting groove is provided on the needle (8), and an internal thread is provided on the inner wall of the mounting groove.

4. The single-needle fiber ring suture device according to claim 1, characterized in that: The adjustment component comprises a connecting shell (1), one end of the connecting shell (1) is slidably connected to a push rod (2), an outer tube (5) is connected to an end of the connecting shell (1) away from the push rod (2), an end of the push rod (2) close to the outer tube (5) is connected to a first connecting rod (4), an end of the first connecting rod (4) away from the push rod (2) is connected to a second connecting rod (7), and the push rod (2) controls the first connecting rod (4) to rotate and move along the length direction of the connecting shell (1).

5. The single-needle fiber ring suture device according to claim 4, characterized in that: A limiting column (3) is arranged in the middle of the push rod (2), and a plurality of grooves (301) are evenly arranged on the outer wall of the limiting column (3), and the grooves (301) are arranged along the length direction of the limiting column (3). A limiting strip (104) is arranged in the connecting shell (1), and the limiting strip (104) is located in the corresponding groove (301), and the groove (301) limits the rotation of the push rod (2).

6. The single-needle fiber ring suture device according to claim 5, characterized in that: A first stopper (101), a second stopper (102) and a third stopper (103) are arranged in the connection shell (1); the second stopper (102) is located between the first stopper (101) and the third stopper (103); through holes are arranged on the first stopper (101), the second stopper (102) and the third stopper (103); a limiting column (3) is located in the through hole of the second stopper (102); the diameter of the through hole on the second stopper (102) is larger than the diameter of the through holes of the first stopper (101) and the third stopper (103); and the through holes of the first stopper (101) and the third stopper (103) are smaller than the radius of the limiting column (3).

7. The single-needle fiber ring suture device according to claim 6, characterized in that: The limiting strip (104) is located on the side wall of the through hole of the second stopper (102).

8. The single-needle fiber ring suture device according to claim 6, characterized in that: The distance between the first stopper (101) and the second stopper (102) is smaller than the distance between the first stopper (101) and the third stopper (103).

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