CN106214198A - One can the stitching devices of " 8 " word staples ring - Google Patents

Abstract

The invention discloses a suturing device capable of suturing fibrous rings in the shape of "8", comprising a suture needle, the suture needle includes a suture needle body and a suture hook arranged at the bottom of the suture needle main body, the suture hook includes a positioning section and a puncture section, the positioning section and the puncture section The main body of the needle is connected, the puncture section is connected with the bottom end of the positioning section, and there is a certain angle between the positioning section and the puncture section; a threading hole is set on the puncture section, and a threading channel is set in the puncturing section, and the threading channel is connected with the threading hole, and the suture It penetrates through the threading hole and passes through the threading channel into the piercing section and passes through the exit of the piercing section. The structure of this application can perform "8" suture for different shapes of damaged surfaces, improve the suture speed of the annulus incision and the stability of wound suture; compared with the existing device, the use of the device can control the sutured soft tissue edge distance and suture The depth of operation is small, and the success rate of operation is high.

Description

A suturing device capable of suturing fibrous annulus in "8" shape

technical field

The invention belongs to the technical field of medical devices, and relates to a tool for treating lumbar intervertebral disc herniation, in particular to an annulus fibrosus suture device for lumbar intervertebral disc herniation after nucleus pulposus extraction.

Background technique

Since the simple laminectomy fenestrated nucleus pulposus was carried out clinically, it has relieved the pain of countless patients, but the high secondary recurrence rate after the operation still brings great pain to the patients. At the same time, the annulus fibrosus Scar healing also brings great challenges to the second treatment. At present, it is believed that suture fixation after annulus incision has a clear effect on the biomechanical stability of the vertebral body and the prevention of secondary recurrence after surgery. However, intervertebral disc suturing is quite difficult. The main reason is that the fibrous annulus is located in a deep position after simple fenestration and decompression. There is no way to complete the suture operation with the existing curved suture needles. At the same time, the general fibrous annulus opening They are all located behind the nerve root, and improper use can easily lead to damage to the nerve root and dura mater.

With the advancement of medical technology and people's requirements for the speed of surgical recovery, more and more patients require minimally invasive surgery. New technology, minimally invasive surgery has the advantages of less trauma, less pain, and faster recovery. It is considerate to the patient to the greatest extent and relieves the pain of the patient. However, for lumbar disc herniation surgery, due to the special location of the lesion, if the design of the operating tool is unreasonable, it is easy to cause secondary damage to the surrounding nerve tissue and affect the recovery of the patient; in addition, the suture process must be fast, In order to minimize other injuries to patients caused by too long suturing time, however, the existing annulus fibrosus suturing tools generally need to be threaded and sutured several times outside the body, and the sutures used for threading sutures are small, and the sutures can be used at any time. After the needle enters the human body and successfully perforates the two strands of suture, it is difficult to identify the two ends of the suture, which also increases the difficulty of pulling out the thread end, and can only be sutured with flat stitches, with limited fixation range and biomechanical strength. Poor. Therefore need to improve existing stitching tool for this problem.

Contents of the invention

Purpose of the invention: The purpose of the present invention is to address the deficiencies in the prior art, and provide a device that is easy to operate and can accurately distinguish and extract the suture ends, and realizes "8" suturing of the annulus fibrosus after lumbar disc herniation and nucleus pulposus excision , Increase the range of sutures, improve the firmness of sutures, and reduce postoperative complications and recurrence rates.

Technical solution: A suturing device capable of suturing fibrous rings according to the present invention includes a suture needle, the suture needle includes a suture needle main body and a suture hook arranged at the bottom of the suture needle main body, and the suture hook includes A positioning section and a puncture section, the positioning section is connected to the needle body, the puncture section is connected to the bottom end of the positioning section, and a certain angle is formed between the positioning section and the puncture section; A threading hole, a threading channel is arranged in the puncturing section, and the threading channel communicates with the threading hole, and sutures are inserted through the threading hole, penetrated into the punctured section through the threading channel, and passed out through the outlet of the punctured section .

Further, in order to facilitate the separation of the two ends of the suture and avoid the problem of pulling out the wrong thread end due to the close proximity of the two ends of the suture after the puncture, the threading holes are placed at both ends of the puncture section, and the threading channel runs through the entire puncture part.

The existing sewing needle, sewing hook and sewing needle main body are integrated structures, once the sewing hook is damaged, the whole sewing needle is scrapped, resulting in higher average operation cost; as a preferred solution, the device adopts the sewing needle main body and sewing hook as a Split structure, the two are connected by thread fit, the suture hooks damaged during the operation can be updated in time, and the handle can be reused many times, thereby reducing the operation cost.

Further, in order to conform to the structural characteristics of the human body, the main body of the sewing needle includes a handle end and a hook end, the handle end is in the shape of a trapezoidal cylinder with a length of 80-120 mm and a top diameter of 20-40 mm; The hook end joint shrinks, the top diameter of the hook end is 4-8 mm, the bottom diameter is 3-4 mm, and the length is 120-150 mm; the needle body and the sewing hook are connected with each other through threads; the positioning section It is on the same straight line as the main body of the suture needle, and the angle between the positioning section and the puncture section is 15°-160°, the length of the positioning section is 15-20mm, and the length of the puncture section is 6-15mm; threading hole And the inner diameter of the threading channel is 0.4-0.6mm.

Further, in order to facilitate the "8" suture of the annulus incision, the two suture hooks are used as a set, including the first suture hook and the second suture hook, the positioning section and the puncture section of the first suture hook The angle between them is 15°-60°; the angle between the positioning section and the puncture section of the second suture hook is 100°-160°.

Further, a suture detachment device is provided on the puncture section of the second suture hook. As a preferred solution, the suture detachment device is a drawing line slit provided on the ventral side or bottom of the puncture section, and the drawing line slit It communicates with the threading channel; the width of the drawing line slit is smaller than the inner diameter of the suture in a natural state.

Further, the bottom end of the needle main body is provided with a threaded hole, the top of the sewing hook is provided with a thread, and the sewing needle body is sleeved on the top of the sewing hook through thread fit, and the depth of the threaded hole is 3-6 mm.

Further, in order to distinguish the position of the hook tip, a direction indicating arrow is provided at the top of the needle body, and the direction of the indicating arrow is used to indicate the hook side of the suture hook.

Further, in order to facilitate the removal of the punctured thread end, the device is also equipped with a thread gripper, the thread gripper includes a first clip and a second clip, and the first clip and the second clip The top of the clip is connected to form a hand-held part. The tails of the first clip and the second clip are clamping ends, and a set of clamping teeth are provided at the clamping ends of the first clip and the second clip. The teeth and the clips form a certain angle.

Further, the first clip and the second clip have the same structure, and both include a hand-held part and a clamping end; The part and the clamping end are connected as a whole through a circular arc transition section, so that the handheld part and the clamping end are staggered at a certain angle to avoid problems such as operational errors caused by line of sight occlusion.

Further, in order to improve the clamping effect on the thread end, avoid the separation of the suture and the thread gripper during the pulling out of the thread end, which will affect the sewing efficiency, the gripping tooth and the clip are at an angle of 90°, and the flat tooth thread gripper is used At the time, first identify the suture that needs to be pulled out, and clamp this section of suture into the flat teeth of the thread clamp, and pull out the suture by means of the flat teeth.

Beneficial effects: (1) The present invention has a simple and reasonable structure, is easy to operate, can suture damaged surfaces of different shapes, and can be used in conjunction with minimally invasive surgery. Various problems caused by the invisible suture process of the annulus fibrosus in the prior art are solved; (2) when using this device for suture, because the distance between the two ends of the suture is far, it is easier to identify and pull out the thread end, which helps to reduce Suture time, improve suture efficiency; (3) When using this device to suture, the "8" suture of the annulus incision can be realized, the suture range can be expanded, the tensile strength of the wound after suture can be improved, and the suture speed of the annulus incision and wound suture can be improved. Stability, improve wound healing speed; (4) The thread clamp provided in this device conforms to the structural characteristics of human body mechanics, avoiding the problem of line of sight blocking during operation, and the design of the clamping teeth prevents the thread end from slipping and collapsing during the extraction process. The separation of the thread clamp leads to the problem that the suture takes a long time; (5) Compared with the existing device, the use of the device can control the sutured soft tissue edge distance and the sutured depth; at the same time, it can also overcome the gap between the soft tissues; (6) ) The device has a reasonable structure, conforms to the ergonomic design, has small operation errors, and has a high success rate of the operation.

Description of drawings

Fig. 1 is the structural representation of sewing needle in embodiment 1;

Fig. 2 is the structural representation of the first seam hook in embodiment 1;

Fig. 3 is the structural representation of the second seam hook in embodiment 2;

Fig. 4 is the front view of the structure of the thread gripper in the present invention;

Fig. 5 is a side view of the thread gripper in the present invention;

Fig. 6 is a partially enlarged schematic view of the clamping end of the thread clamp in the present invention;

Fig. 7 is a top view of the main body of the suturing needle of the present invention;

Wherein: 1. Suture needle body, 21. First sewing hook, 22. Second sewing hook, 31. First positioning section, 32. Second positioning section, 41. First puncture section, 42. Second puncturing section, 5. Threading hole, 6. First clip, 7. Second clip, 8. Arc transition section, 9. Clamping teeth, 10. Thread, 11. Indication arrow.

detailed description

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

Embodiment 1: A suturing device capable of suturing the fibrous annulus in the shape of "8", including a sewing needle and a thread gripper, the sewing needle includes a sewing needle body 1 and a first sewing hook 21 arranged at the bottom of the sewing needle body, and sewing The needle main body 1 and the first seam hook 21 are split structures, and the two are connected by threaded fit. The first seam hook 21 includes a first positioning section 31 and a first puncture section 41. The first positioning section 31 is connected to the seam. The needle body 1 is connected, and the first puncture section 41 is connected to the bottom end of the first positioning section 31; the tail end of the first puncture section 41 is provided with a threading hole, and a threading channel is arranged in the first puncturing section 41, and the threading channel communicates with the threading hole 5, The suture is threaded through the threading hole 5 and passed through the threading channel into the first puncture section 4 and passed out from the outlet of the first puncture section; the needle body 1 includes a hand-held end and an engaging hook end, and the hand-held end is in the shape of a trapezoidal cylinder , the length is 100mm, the top diameter is 30mm; the diameter shrinks from the connection with the hook end, the top diameter of the hook end is 6mm, the bottom diameter is 3.5mm, and the length is 160mm; the needle body and the second A seam hook 21 is connected with each other through threads, and the top of the first seam hook 21 is provided with a thread 10, and the sewing needle body 1 is sleeved on the top of the first seam hook 21 through threads, and the depth of the threaded hole is 4mm; the first positioning section 31 and the seam The needle body 1 is on the same straight line, and the angle between the first positioning section 31 and the puncture section 41 is 30°, the length of the first positioning section 31 is 15mm, and the length of the first puncture section 41 is 12mm; the inner diameter of the threading hole 5 is 0.5 mm and the inner diameter of the threading channel are both 0.4mm, and the top of the needle body is provided with a direction indicator arrow 11, and the direction of the indicator arrow is used to indicate the hook side of the suture hook.

The thread clamp includes a first clip 6 and a second clip 7, the first clip 6 and the second clip 7 have the same structure, both include a hand-held part and a clamping end, and the hand-held part and the clamping end transition through a circular arc Section 8 is connected as a whole, so that the hand-held part and the clamping end are staggered at a certain angle to avoid problems such as operational errors caused by line of sight blocking; the top of the first clip 6 and the second clip 7 are connected for handheld operation, and the tail It is the clamping end, and a set of clamping teeth 9 is arranged at the clamping end, and the clamping teeth 9 and the clip form an angle of 90°, forming a flat tooth structure.

When using this device to suture the "8" figure of the fibrous annulus, it mainly includes the following steps:

(1) Install the first suture hook on the main body of the suture needle, insert the end A of the first suture thread into the puncture section of the suture hook, and pass a little; Puncture on the side. After the puncture is successful, the thread tensioner will identify and clamp the thread end A and pull it out. The needle does not need to be pushed out, and the thread end B will be rotated 180° for the second needle puncture. After the puncture is completed, use the thread tensioner to identify it and pull it out The suture segment is gently clamped by the flat teeth of the thread gripper, (the suture segment to be drawn out is located in the G area of the flat tooth at the clamping end of the thread gripper, and the suture and the flat teeth are in the process of drawing out. can slide each other), then pull out the thread end B of the suture; then push out the sewing needle;

(2) Insert the thread end C of the second suture into the puncture section of the suture hook, and then puncture the side of the opening of the fiber ring with the suture needle, and the third needle puncture position is the same as that of the first puncture. The needle position is at a different position on the same side of the incision of the fibrous annulus. After the puncture is successful, the thread clamp will identify and clamp the thread end C and pull it out. The needle does not need to be pushed out, and the thread end D is rotated 180° for the fourth needle puncture. After the puncture is completed, use the clamp The gripping end of the thread gripper identifies the suture section to be pulled out, and the flat teeth of the thread gripper lightly clamp the suture (at this time, the suture section to be pulled out is located in the G area of the flat tooth at the gripping end of the thread gripper, During the extraction process, the suture and the flat teeth can slide each other), and then the thread end D of the suture is drawn out; then the sewing needle is pushed out;

(3) Knot the end of thread A and end of suture D and cut off the excess part, tie off the end of thread B and end of suture C and cut off the excess part to complete the "8" suture.

Embodiment 2: A suture device capable of suturing the fibrous annulus in the shape of "8", including a suture needle and a thread gripper, the suture needle includes a suture needle main body 1 and a first suture hook 21 arranged at the bottom of the suture needle main body, and There is a second seam hook 22 for replacement of the first seam hook 21; the first seam hook 21 and the thread gripper in this embodiment are the same as in Embodiment 1; the second seam hook 22 is basically the same as the first seam hook 21 in structure The same, but the difference is that the bottom of the second puncture section 42 of the second seam hook 22 offers a drawing line seam, and the drawing line seam communicates with the threading channel of the second puncture section 42, and the width of the drawing line seam is smaller than that of the suture under the natural state. and the angle between the second puncture section 42 of the second hook 22 and the second positioning section 32 is 150°; the second hook 22 can also be installed on the needle body 1 through screw fit. The suture in the present embodiment adopts the nylon thread with elasticity and tenacity, and under the natural state, the inner diameter of the suture is 0.3mm, and the width of the drawn line seam is 90% of the inner diameter of the suture, i.e. 0.27mm, and the width of the drawn line seam is not only It can assist the separation of the suture needle and the suture after the puncture is completed, and can also prevent the suture from falling off from the drawing line seam during the puncture;

When using this device to suture the "8" figure of the fibrous annulus, it mainly includes the following steps:

(1) Fix the first sewing hook on the main body of the sewing needle, insert the thread end A of the suture into the sewing hook to puncture the incision of the fibrous ring, after the puncture is successful, use the thread clamp to identify and clamp the thread end A and pull it out, and sew The needle does not need to be pushed out, and the thread end B is rotated 180° for the second needle puncture. After the puncture is completed, use the gripping end of the thread gripper to identify the suture section to be drawn out, and gently clamp the suture with the flat teeth of the thread gripper, ( At this time, the suture segment to be extracted is located in the G area of the flat teeth at the clamping end of the thread gripper, and the suture and the flat teeth can slide each other during the extraction process), and then the thread end B of the thread is drawn out; then the needle is pushed out;

(2) Fix the second suture hook on the main body of the needle, insert thread end B into the puncture section, and puncture the annulus incision with the third needle, the puncture point of the third needle is on the same side as the puncture point of the first needle For different positions of the incision of the annulus fibrosus, the puncture direction is from the outside of the incision to the inside. After the puncture is completed, use the thread clamp to identify the thread end B and pull it out. The puncture segment is withdrawn from the puncture hole. The operator holds the thread end B and the suture point C outside the body. Lift up the needle, separate the suture from the needle through the suction line, and then withdraw from the needle;

(3) Fix the first suture hook on the main body of the needle again, insert the thread end B into the puncture section in reverse, and perform the fourth needle puncture on the incision of the annulus fibrosus, the puncture point of the fourth needle is the same as the puncture point of the second needle Located at different positions of the incision of the ipsilateral annulus fibrosus, and on the opposite side of the third needle, the puncture direction is from the inside of the incision to the outside. After the puncture is completed, use the thread gripper to identify the thread end B and pull it out;

(4) Knot thread ends A and thread ends B and subtract the excess to complete the "8" suture.

In this process, two suture hooks are used together, and only one suture is needed to complete a firm "8" suture.

As stated above, while the invention has been shown and described with reference to certain preferred embodiments, this should not be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A suturing device capable of suturing the fibrous ring in the word "8", comprising a suture needle, the suture needle comprising a suture needle body and a suture hook arranged at the bottom of the suture needle main body, characterized in that: the suture hook comprises a positioning section and a puncture section, the positioning section is connected to the needle body, the puncture section is connected to the bottom end of the positioning section, and a certain angle is formed between the positioning section and the puncture section; a threading hole is provided on the puncture section A threading channel is set in the puncturing section, the threading channel is in communication with the threading hole, the suture is threaded through the threading hole, penetrates into the puncturing section through the threading channel, and passes out through the outlet of the puncturing section. 2. The suturing device capable of suturing the fibrous annulus according to claim 1, characterized in that: the threading holes are placed at both ends of the puncture section, and the threading channel runs through the entire puncture section. 3. The suturing device capable of suturing the fibrous annulus according to claim 1, characterized in that: the suture needle body and the suture hook are of a split structure, and the two are connected by thread fit. 4. The suturing device capable of suturing the fibrous annulus according to claim 3, characterized in that: the needle body includes a hand-held end and a hook end, and the hand-held end is in the shape of a trapezoidal cylinder with a length of 80 ～120mm, the top diameter is 20～40mm; the diameter shrinks from the joint with the hook end, the top diameter of the hook end is 4～8mm, the bottom diameter is 3～4mm, and the length is 120～150mm; The main body of the sewing needle and the hook are connected to each other through threads; the positioning section and the main body of the sewing needle are on the same straight line, and the angle between the positioning section and the puncture section is 15° to 160°, and the length of the positioning section is 15-20mm, the length of the puncture section is 6-15mm; the inner diameter of the threading hole and the threading channel are both 0.4-0.6mm. 5. The suturing device capable of suturing the fibrous ring according to claim 4, characterized in that: two of the suture hooks are used as a set, including a first suture hook and a second suture hook, the The positioning section of the first suture hook and the puncturing section form an included angle of 15° to 60°; the positioning section of the second suture hook and the puncturing section form an included angle of 100° to 160°. 6. The suturing device capable of suturing the fibrous annulus in the shape of "8" according to claim 5, wherein a suture detachment device is provided on the puncture section of the second suture hook. 7. The suturing device capable of suturing the fibrous annulus according to claim 6, characterized in that: the suture detachment device is a drawing line seam provided on the puncture section, and the drawing line seam is connected with The threading channel is connected. 8. The suturing device capable of suturing the fibrous annulus according to claim 1, characterized in that it further comprises a thread gripper, the thread gripper includes a first clip and a second clip, and the first clip A clip is connected to the top of the second clip to form a hand-held part, the tails of the first clip and the second clip are clamping ends, and the clamping ends of the first clip and the second clip are set A set of clamping teeth, the clamping teeth and the clamping piece form a certain angle. 9. The suturing device capable of suturing the fibrous annulus according to claim 8, characterized in that: the first clip and the second clip have the same structure, and both include a hand-held part and a clamping end, so The handle part and the clamping end are connected as a whole through a circular arc transition section. 10. The suturing device capable of suturing the fibrous annulus in the shape of "8" according to claim 8, characterized in that: the clamping teeth and the clamping piece form an angle of 90°.