Clamp head assembly of laparoscope needle holder and laparoscope needle holder

Abstract

The utility model provides a forceps head assembly of a laparoscope needle holder and the laparoscope needle holder, and belongs to the technical field of medical instruments. In the forceps head assembly of the laparoscope needle holder, a meshing disc is rotationally arranged on a first forceps body, first meshing teeth are evenly distributed on the peripheral wall of the meshing disc, a boss is fixedly arranged on the meshing disc, a needle containing groove is formed in the boss, a second forceps head comprises a second forceps body, the second forceps body is provided with a containing groove, a meshing groove and an avoiding groove, and the containing groove can contain the boss. The receding groove penetrates through the second clamp body in the width direction of the second clamp body, the receding groove and the containing groove are communicated in the thickness direction of the second clamp body, the meshing groove and the receding groove are communicated in the length direction of the second clamp body, second meshing teeth are evenly distributed on the inner side wall of the meshing groove, the second meshing teeth can be meshed with the first meshing teeth, and the connecting piece is connected with the second clamp body. The connecting piece can drive the second plier body to be close to or away from the first plier body. The angle of the suture needle can be adjusted, meanwhile, the stability of the suture needle is guaranteed, and the suture needle is not prone to falling off.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a pair of forceps head assembly of laparoscope needle holder and laparoscope needle holder. BACKGROUND

[0002] With the popularization of the surgical concept of minimally invasive surgery, laparoscopic surgery has been widely used in the field of surgical medical treatment, which realizes complex surgical operation in the body through multiple channels on the body surface. Compared with traditional surgery, laparoscopic surgery has the advantages of small trauma, clear vision, rapid postoperative recovery and the like. Laparoscopic surgery is composed of multiple basic elements such as incision, separation, suture, ligation and the like, and the suture technology is the most difficult basic element to master. Generally speaking, laparoscopic suture can be further divided into needle clamping, adjustment of the direction and angle of the needle, penetration through the tissue, needle pulling and knotting. The laparoscope needle holder is a kind of laparoscope instrument, which is used for clamping the suture needle, and in the laparoscopic surgery, the laparoscope needle holder is needed to clamp the suture needle to extend into the inside of the human body for suture operation. How to more conveniently obtain a suitable needle clamping angle in the suture process is a problem concerned in the improvement of the laparoscope, and there are various needle holders for this problem. However, the existing laparoscope needle holders still have the problems of poor stability of the suture needle in the process of adjusting the needle clamping angle, easy disengagement of the suture needle from the laparoscope needle holder and poor control of the angle adjustment. CONTENT OF THE UTILITY MODEL

[0003] In view of this, in order to solve the problems of the existing laparoscope needle holders, such as poor stability of the suture needle in the process of adjusting the needle clamping angle, easy disengagement of the suture needle from the laparoscope needle holder and poor control of the angle adjustment, the utility model provides a pair of forceps head assembly of laparoscope needle holder and laparoscope needle holder.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A pair of forceps head assembly of laparoscope needle holder, comprising:

[0006] A first forceps head, the first forceps head comprises a first forceps body, an engaging disc and a boss, the engaging disc is rotationally arranged on the first forceps body, the outer peripheral wall of the engaging disc is uniformly distributed with first engaging teeth, the boss is fixedly arranged on the engaging disc, and the boss is provided with a needle accommodating groove;

[0007] A second forceps head, the second forceps head comprises a second forceps body, the second forceps body is provided with an accommodating groove, an engaging groove and an avoiding groove, the accommodating groove can accommodate the boss, the avoiding groove penetrates through the second forceps body along the width direction of the second forceps body, the avoiding groove and the accommodating groove are communicated along the thickness direction of the second forceps body, the engaging groove and the avoiding groove are communicated along the length direction of the second forceps body, the inner side wall of the engaging groove is uniformly distributed with second engaging teeth, and the second engaging teeth can engage with the first engaging teeth.

[0008] A connecting piece connected with the second plier body, the connecting piece can drive the second plier body to approach or move away from the first plier body.

[0009] As a preferred solution of the plier head assembly of the laparoscope needle holder, the bottom surface of the needle accommodating groove is arc-shaped.

[0010] As a preferred solution of the plier head assembly of the laparoscope needle holder, the bottom surface and the side surface of the needle accommodating groove are rough surfaces.

[0011] As a preferred solution of the plier head assembly of the laparoscope needle holder, the bottom surface of the avoiding groove is a needle pressing surface, the top surface of the engaging disc is a needle bearing surface, and the needle bearing surface and the needle pressing surface can abut against the suture needle.

[0012] As a preferred solution of the plier head assembly of the laparoscope needle holder, the bottom surface of the needle accommodating groove is flush with the needle bearing surface.

[0013] As a preferred solution of the plier head assembly of the laparoscope needle holder, the needle bearing surface and the needle pressing surface are both planar surfaces.

[0014] As a preferred solution of the plier head assembly of the laparoscope needle holder, the needle bearing surface and the needle pressing surface are both rough surfaces.

[0015] As a preferred solution of the plier head assembly of the laparoscope needle holder, the first plier head further comprises a rotating base, the rotating base is rotatably arranged in the first plier body, and the rotating base is fixedly connected with the engaging disc.

[0016] As a preferred solution of the plier head assembly of the laparoscope needle holder, the rotating base comprises a rotating disc and a rotating shaft, the two ends of the rotating shaft are fixedly connected with the engaging disc and the rotating disc respectively, the first plier body is provided with a recess and a through hole, the recess is located on the side of the first plier body away from the engaging disc, the rotating shaft is rotatably arranged in the through hole, the rotating disc is rotatably arranged in the recess, the rotating disc abuts against the bottom surface of the recess, and the diameter of the recess is greater than the diameter of the through hole.

[0017] The utility model also provides a laparoscope needle holder, including the clamp head subassembly of above-mentioned laparoscope needle holder still includes open and close handle, draw -in lock device, pull rod, hollow catheter, the pull rod is located in the hollow cathater, open and close handle and pull rod all are connected with draw -in lock device, draw -in lock device can convert the opening and closing movement of open and close handle into the axial movement of pull rod, and can lock the position of pull rod, the connecting piece of pull rod with the clamp head subassembly of above-mentioned laparoscope needle holder is connected, the connecting piece can convert the axial movement of pull rod into the movement of second clamp body close to or away from first clamp body, first clamp body and hollow catheter fixed connection.

[0018] Compared with the prior art, the utility model provides a laparoscope needle holder's clamp head subassembly and laparoscope needle holder's beneficial effects are:

[0019] In order to solve the existing these laparoscope needle holder still exists the problem of poor stability of suture needle in the process of adjusting the needle clamping angle, the suture needle is easy to separate from the laparoscope needle holder and the angle is not easy to control, the utility model provides a laparoscope needle holder's clamp head subassembly.

[0020] (1) the utility model provides a laparoscope needle holder's clamp head subassembly, when using the clamp head subassembly of laparoscope needle holder, suture needle is placed in needle containing groove, when suture needle and the bottom and side of needle containing groove contact, then use the clamp tool such as forceps to clamp suture needle and rotate. At this time, because suture needle is located in needle containing groove, it can make the rotation of suture needle more stable, effectively prevent suture needle from separating from the clamp head subassembly of laparoscope needle holder.

[0021] (2) the utility model provides a laparoscope needle holder's clamp head subassembly, the needle containing groove of placing suture needle is arranged at the boss, the boss is fixedly arranged at the meshing disc, the meshing disc is rotatably arranged at the first clamp body, when adjusting the angle of suture needle, the meshing disc rotates, when suture needle is adjusted to the target angle, the second meshing tooth on the second clamp body is engaged with the first meshing tooth on the outer wall of the meshing disc, because the second meshing tooth is fixed, therefore the meshing disc is also fixed. It can prevent suture needle from rotating randomly when adjusting the angle of suture needle, the rotation direction of suture needle can only be the same as the rotation direction of the meshing disc, and after adjusting, the meshing disc can be fixed, which ensures that the needle is fixed, can ensure the stability of suture needle when adjusting the angle of suture needle, suture needle is not easy to separate from the clamp head subassembly of laparoscope needle holder, and the adjustment direction and angle are easy to control, which is convenient to obtain the best needle clamping angle, reduce the time of clamping suture needle loss and then increase the efficiency of suturing, improve the operation efficiency, reduce the operation secondary damage caused by inconvenient needle clamping, shorten the learning curve.

[0022] (3) The utility model provides a kind of forceps head subassembly of laparoscope needle holder, the structure of the forceps head subassembly of laparoscope needle holder is ingenious and simple, only need to improve the forceps head part of laparoscope needle holder, without reforming other parts, it is suitable for the improvement of traditional laparoscope needle holder that has in market, and it is suitable for traditional laparoscope Troca collocation, without improving Troca separately, with the advantages of easy improvement, easy popularization, low cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings that form part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.In the drawings:

[0024] Figure 1 It is the structure schematic view of the first forceps head of the forceps head subassembly of laparoscope needle holder along first visual angle provided by the utility model embodiment;

[0025] Figure 2 It is the sectional view of the first forceps head of the forceps head subassembly of laparoscope needle holder provided by the utility model embodiment;

[0026] Figure 3 It is the structure schematic view of the first forceps head of the forceps head subassembly of laparoscope needle holder along second visual angle provided by the utility model embodiment;

[0027] Figure 4 It is Figure 3 The enlarged schematic view of place A in it;

[0028] Figure 5 It is the structure schematic view of the second forceps head of the forceps head subassembly of laparoscope needle holder along first visual angle provided by the utility model embodiment;

[0029] Figure 6 It is the structure schematic view of the second forceps head of the forceps head subassembly of laparoscope needle holder along second visual angle provided by the utility model embodiment;

[0030] Figure 7 It is the structure schematic view of the forceps head subassembly of laparoscope needle holder provided by the utility model embodiment.

[0031] In the drawing:

[0032] 1, first forceps body;

[0033] 2, engagement disc; 21, needle bearing surface;

[0034] 3, boss;

[0035] 4, needle containing groove;

[0036] 5, first engagement tooth;

[0037] 6. the second jaw;

[0038] 7. the accommodating groove;

[0039] 8. the avoiding groove;

[0040] 9. the engaging groove;

[0041] 10. the second engaging tooth;

[0042] 11. the rotating shaft;

[0043] 12. the rotating disc;

[0044] 13. the opening and closing handle;

[0045] 14. the hollow catheter. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0047] In the description of the present application, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless explicitly defined and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0049] In the description of the present embodiment, the terms "upper", "lower", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0050] Referring to Figures 1-7 To illustrate the present embodiment, the utility model provides a kind of head assembly of laparoscope needle holder and laparoscope needle holder, the head assembly of laparoscope needle holder includes first jaw, second jaw and connecting piece, first jaw includes first jaw body 1, engaging disc 2 and boss 3, engaging disc 2 is rotationally arranged in first jaw body 1, the outer peripheral wall of engaging disc 2 is uniformly distributed with first engaging tooth 5, boss 3 is fixedly arranged in engaging disc 2, boss 3 is provided with needle accommodating groove 4, second jaw includes second jaw body 6, second jaw body 6 is provided with accommodating groove 7, engaging groove 9 and avoiding groove 8, accommodating groove 7 can accommodate boss 3, avoiding groove 8 penetrates second jaw body 6 along the width direction of second jaw body 6, avoiding groove 8 is communicated with accommodating groove 7 along the thickness direction of second jaw body 6, engaging groove 9 is communicated with avoiding groove 8 along the length direction of second jaw body 6, the inner side wall of engaging groove 9 is uniformly distributed with second engaging tooth 10, second engaging tooth 10 can be engaged with first engaging tooth 5, connecting piece is connected with second jaw body 6, connecting piece can drive second jaw body 6 to be close to or away from first jaw body 1.

[0051] In use of the jaw assembly of the laparoscopic needle holder, the connecting piece drives the second jaw 6 away from the first jaw 1 to expose the needle accommodating groove 4, and the suture needle is placed in the needle accommodating groove 4, at this time, the suture needle is in contact with the bottom and side of the needle accommodating groove 4, then a clamp tool such as a forceps is used to clamp and rotate the suture needle, the forceps drives the suture needle to rotate, the suture needle drives the boss 3 and the engaging disc 2 to rotate, after the suture needle is rotated to the target angle, the forceps releases the suture needle, the connecting piece drives the second jaw 6 to approach the first jaw 1 until the bottom of the avoiding groove 8 is in abutment with the suture needle, at this time, the boss 3 is located in the accommodating groove 7, the suture needle is clamped between the second jaw 6 and the engaging disc 2, the first engaging teeth 5 on the engaging disc 2 are engaged with the second engaging teeth 10 on the wall of the engaging groove 9, since the second engaging teeth 10 are fixed, after the first engaging teeth 5 are engaged with the second engaging teeth 10, the engaging disc 2 is also fixed, thereby the suture needle is fixed, and the angle of the suture needle is no longer changed. The jaw assembly of the laparoscopic needle holder can prevent the suture needle from rotating randomly when the angle of the suture needle is adjusted, the rotating direction of the suture needle can only be the same as that of the engaging disc 2, the stability of the suture needle can be ensured when the angle of the suture needle is adjusted, the suture needle is not easy to be separated from the jaw assembly of the laparoscopic needle holder, the adjusting direction and angle are easy to control, the optimal needle clamping angle can be easily obtained, after the angle is adjusted, the suture needle is limited by the groove wall of the needle accommodating groove 4, the engaging disc 2 and the bottom wall of the avoiding groove 8, the suture needle can be stably clamped, the time for clamping the suture needle is reduced, the suture efficiency is increased, the operation efficiency is improved, the operation side injury caused by inconvenient clamping of the suture needle is reduced, and the learning curve is shortened. Moreover, the structure of the jaw assembly of the laparoscopic needle holder is ingenious and simple, only the jaw part of the laparoscopic needle holder needs to be improved, other parts do not need to be modified, the jaw assembly of the laparoscopic needle holder is suitable for improvement of the existing traditional laparoscopic needle holder on the market, and is suitable for traditional laparoscopic Troca, without the need for modification of the Troca, and has the advantages of easy improvement, easy popularization and low cost.

[0052] As shown in Figure 3 and Figure 4 , the sawtooth angle of the first engaging teeth 5 is arc-shaped, which can reduce the limitation of the needle adjusting angle caused by the jamming of the engaging teeth when the second jaw approaches the first jaw. Similarly, the sawtooth angle of the second engaging teeth 10 is also arc-shaped. It can increase the friction and achieve non-jamming engagement.

[0053] In this embodiment, the number, width, tooth groove depth and arc of the first engaging teeth 5 and the second engaging teeth 10 are determined by design model simulation analysis and physical test to obtain the most suitable data, which can ensure that the first engaging teeth 5 and the second engaging teeth 10 can be smoothly engaged without jamming.

[0054] Optionally, the bottom surface of the avoiding groove 8 is a needle pressing surface 81, and the top surface of the engaging disc 2 is a needle bearing surface 21, both of which can abut the suture needle. After the suture needle is placed in the needle accommodating groove 4, the part of the suture needle extending out of the needle accommodating groove 4 contacts the top surface of the engaging disc 2, i.e. the needle bearing surface 21, and the needle bearing surface 21 supports the suture needle. When the second jaw body 6 approaches the first jaw body 1 until the first engaging tooth 5 engages with the second engaging tooth 10, the bottom surface of the avoiding groove 8, i.e. the needle pressing surface 81, contacts the suture needle. At this time, the suture needle is located between the needle bearing surface 21 and the needle pressing surface 81, and the suture needle can be clamped and fixed.

[0055] Optionally, the bottom surface of the needle accommodating groove 4 is arc-shaped. This can make the bottom surface of the needle accommodating groove 4 more closely fit the suture needle, and further ensure the stability of the suture needle.

[0056] Optionally, the bottom surface and the side surface of the needle accommodating groove 4 are rough surfaces. This increases the friction between the groove wall of the needle accommodating groove 4 and the suture needle, effectively preventing the suture needle from coming off the needle accommodating groove 4.

[0057] Optionally, the bottom surface of the needle accommodating groove 4 is flush with the needle bearing surface 21. In this embodiment, the bottom surface of the needle accommodating groove 4 is arc-shaped. It can be understood that the lowest part of the needle accommodating groove 4 is flush with the needle bearing surface 21, so as to ensure that, after the suture needle is placed in the needle accommodating groove 4, the part of the suture needle extending out of the needle accommodating groove 4 can abut the needle bearing surface 21.

[0058] Optionally, the needle bearing surface 21 and the needle pressing surface 81 are both flat surfaces. This can better clamp the suture needle between the engaging disc 2 and the second jaw body 6.

[0059] Optionally, the needle bearing surface 21 and the needle pressing surface 81 are both rough surfaces. This increases the friction between the suture needle and the needle bearing surface 21, and increases the friction between the suture needle and the needle pressing surface 81, preventing the suture needle from coming off the jaw assembly of the laparoscope needle holder.

[0060] Optionally, the first jaw further comprises a rotating base, the rotating base is rotatably arranged in the first jaw body 1, and the rotating base is fixedly connected with the engaging disc 2. The engaging disc 2 is rotatably arranged in the first jaw body 1 through the rotating base.

[0061] Optionally, the rotating base comprises a rotating disc 12 and a rotating shaft 11, both ends of the rotating shaft 11 are fixedly connected with the engaging disc 2 and the rotating disc 12 respectively, the first jaw body 1 is provided with a recess and a through hole, the recess is located on the side of the first jaw body 1 away from the engaging disc 2, the rotating shaft 11 is rotatably arranged in the through hole, the rotating disc 12 is rotatably arranged in the recess, the rotating disc 12 abuts against the bottom surface of the recess, and the diameter of the recess is greater than the diameter of the through hole. The rotating disc 12, the rotating shaft 11 and the engaging disc 2 are fixedly connected, and part of the first jaw body 1 is located between the rotating disc 12 and the engaging disc 2, so that the rotating disc 12, the rotating shaft 11 and the engaging disc 2 are rotatably arranged in the first jaw body 1 and will not come off the first jaw body 1.

[0062] As Figure 7 The utility model also provides a laparoscope needle holder, the laparoscope needle holder includes the clamp head subassembly of above-mentioned laparoscope needle holder, still includes open and close handle 13, draw -in lock device, pull rod, hollow catheter 14, pull rod is located in hollow cathater 14, open and close handle 13 and pull rod all are connected with draw -in lock device, draw -in lock device can convert the opening and closing movement of open and close handle 13 into the axial movement of pull rod, and can lock the position of pull rod, pull rod is connected with the connecting piece of the clamp head subassembly of laparoscope needle holder, and the connecting piece can convert the axial movement of pull rod into the movement of second clamp body 6 close to or away from first clamp body 1, and first clamp body 1 is fixedly connected with hollow catheter 14.

[0063] First clamp body 1 is fixedly connected with hollow catheter 14, and is fixedly immovable, hand holds open and close handle 13, under the drive of draw -in lock device, pull rod drives connecting piece to move in the direction away from clamp head subassembly, connecting piece drives second clamp body 6 to be close to first clamp body 1, can hold suture needle between first clamp body 1 and second clamp body 6;Loosen open and close handle 13, under the drive of draw -in lock device, pull rod drives connecting piece to move in the direction close to clamp body subassembly, connecting piece drives second clamp body 6 to be away from first clamp body 1, can loosen suture needle.

[0064] In the embodiment, first clamp body 1 is immovable, and second clamp body 6 moves close to or away from first clamp body 1, and the movement track of second clamp body 6 is arc-shaped, therefore, the outer wall of engaging disc 2 is arc-shaped in the embodiment, and the curvature thereof is matched with the movement track of second clamp body 6 and the outer wall of engaging groove 9, so that first engaging tooth 5 is engaged with second engaging tooth 10.

[0065] In the embodiment, engaging groove 9 is arranged at both ends of avoiding groove 8, and second engaging tooth 10 is arranged at the groove wall of engaging groove 9, but since the outer wall of engaging disc 2 is arc-shaped in the embodiment, only second engaging tooth 10 at the groove wall of avoiding groove 8 at one end close to connecting piece is engaged with first engaging tooth 5, and second engaging tooth 10 at the groove wall of avoiding groove 8 at the other end is not engaged with first engaging tooth 5 and does not interfere with engaging disc 2. The relative position of first clamp head and second clamp head can be fixed by the engagement of second engaging tooth 10 at the groove wall of avoiding groove 8 at one end close to connecting piece and first engaging tooth 5.

[0066] In the use of the laparoscopic needle holder, the laparoscopic needle holder is put into the abdominal cavity through the abdominal wall trocar, and the opening and closing of the pincer head assembly is controlled by adjusting the opening and closing of the pincer handle 13 by hand. The ratchet device converts the opening and closing movement of the pincer handle 13 into the axial movement of the pull rod, and locks the position of the pull rod. The pull rod is connected with the connecting piece of the pincer head assembly of the laparoscopic needle holder, and the axial movement of the pull rod is converted into the movement of the second pincer body 6 close to or away from the first pincer body 1, so as to achieve the purpose of opening and closing the pincer head assembly. When clamping the suture needle, the pincer head assembly needs to be opened by the pincer handle 13, and the suture needle is placed in the needle containing groove 4. At this time, the suture needle is in contact with the bottom and side of the needle containing groove 4. Then, the suture needle is clamped and rotated by using a clamp tool such as a pincer. The pincer drives the suture needle to rotate, and the suture needle drives the boss 3 and the meshing disc 2 to rotate. After the suture needle is rotated to the target angle, the pincer releases the suture needle, the connecting piece drives the second pincer body 6 to approach the first pincer body 1, until the bottom surface of the avoiding groove 8 abuts against the suture needle. At this time, the boss 3 is located in the accommodating groove 7, the suture needle is clamped between the second pincer body 6 and the meshing disc 2, the first meshing tooth 5 on the meshing disc 2 is engaged with the second meshing tooth 10 on the meshing groove 9, and the second meshing tooth 10 is fixed. After the first meshing tooth 5 is engaged with the second meshing tooth 10, the meshing disc 2 is also fixed, so as to fix the suture needle, and the angle of the suture needle is no longer changed. At this time, the angle of the suture needle has been adjusted, the pincer head assembly is closed and locked, and then the suturing operation can be performed. In general, the suture is divided into five links: needle adjustment, needle suturing, line pulling, knot tying, and line cutting. The most difficult part is needle adjustment, followed by suturing.

[0067] In clinical work, it is far from enough to master only single angle suturing. The commonly used angles are: 90°, 180°, 270°, and 360°. In addition, it is necessary to overcome the visual blind area to ensure that the needle clamping angle is accurate.

[0068] Obviously, the above disclosed embodiments of the utility model are only used to help explain the utility model. The embodiments do not describe all the details, and the utility model is not limited to the specific implementation. According to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the technical personnel in the technical field can well understand and utilize the utility model. It is not necessary and impossible to exhaust all the implementation ways here. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A laparoscopic needle holder clamp assembly, characterized in that: include: A first pliers head, comprising a first pliers body (1), an engaging disk (2) and a boss (3), wherein the engaging disk (2) is rotatably mounted on the first pliers body (1), the outer peripheral wall of the engaging disk (2) is uniformly distributed with first engaging teeth (5), the boss (3) is fixedly mounted on the engaging disk (2), and the boss (3) is provided with a needle receiving groove (4); A second pliers head, the second pliers head comprises a second pliers body (6), the second pliers body (6) is provided with a receiving groove (7), an engaging groove (9) and an avoidance groove (8), the receiving groove (7) can accommodate the boss (3), the avoidance groove (8) penetrates the second pliers body (6) along the width direction of the second pliers body (6), the avoidance groove (8) and the receiving groove (7) are connected along the thickness direction of the second pliers body (6), the engaging groove (9) and the avoidance groove (8) are connected along the length direction of the second pliers body (6), the inner side wall of the engaging groove (9) is uniformly distributed with second engaging teeth (10), and the second engaging teeth (10) can engage with the first engaging teeth (5); A connecting piece is connected to the second pliers body (6), and the connecting piece can drive the second pliers body (6) to move closer to or away from the first pliers body (1).

2. The forceps head assembly of the laparoscopic needle holder according to claim 1, characterized in that: The bottom surface of the needle-containing groove (4) is arc-shaped.

3. The forceps head assembly of the laparoscopic needle holder according to claim 1, characterized in that: The bottom surface and side surfaces of the needle-containing groove (4) are both rough surfaces.

4. The forceps head assembly of the laparoscopic needle holder according to claim 1, characterized in that: The bottom surface of the avoidance groove (8) is a needle pressing surface (81), and the top surface of the engagement disk (2) is a needle receiving surface (21). Both the needle receiving surface (21) and the needle pressing surface (81) can abut against a suture needle.

5. The forceps head assembly of the laparoscopic needle holder according to claim 4, characterized in that: The bottom surface of the needle receiving groove (4) is flush with the needle receiving surface (21).

6. The forceps head assembly of the laparoscopic needle holder according to claim 4, characterized in that: The needle receiving surface (21) and the needle pressing surface (81) are both planes.

7. The forceps head assembly of the laparoscopic needle holder according to claim 4, characterized in that: The needle-bearing surface (21) and the needle-pressing surface (81) are both rough surfaces.

8. The forceps head assembly of the laparoscopic needle holder according to claim 1, characterized in that: The first clamp head further comprises a rotating base, the rotating base is rotatably arranged in the first clamp body (1), and the rotating base is fixedly connected to the engagement disk (2).

9. The forceps head assembly of the laparoscopic needle holder according to claim 8, characterized in that: The rotating base comprises a rotating disc (12) and a rotating shaft (11), the two ends of the rotating shaft (11) are fixedly connected to the engaging disc (2) and the rotating disc (12), respectively; the first clamp body (1) is provided with a groove and a through hole, the groove is located on the side of the first clamp body (1) away from the engaging disc (2); the rotating shaft (11) is rotatably passed through the through hole, the rotating disc (12) is rotatably passed through the groove, the rotating disc (12) is in contact with the bottom surface of the groove, and the diameter of the groove is larger than the diameter of the through hole.

10. A laparoscopic needle holder, characterized in that: A laparoscopic needle holder comprising a forceps head assembly according to any one of claims 1 to 9, further comprising an opening and closing forceps handle (13), a locking device, a pull rod, and a hollow catheter (14), wherein the pull rod is located in the hollow catheter (14), the opening and closing forceps handle (13) and the pull rod are both connected to the locking device, the locking device can convert the opening and closing movement of the opening and closing forceps handle (13) into the axial movement of the pull rod, and can lock the position of the pull rod, the pull rod is connected to a connector of the laparoscopic needle holder forceps head assembly, the connector can convert the axial movement of the pull rod into movement of the second forceps body (6) approaching or away from the first forceps body (1), and the first forceps body (1) is fixedly connected to the hollow catheter (14).

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