A rotatable laparoscope needle holder

Abstract

The present invention relates to the field of surgical technology, and specifically to a rotatable laparoscope needle holder, comprising a fixed cylinder, a clamping plate, an operating device, and a transmission device, wherein a rotating cylinder is provided at the front side of the fixed cylinder; two mounting plates are provided at the front side of the rotating cylinder; a mounting gap is formed between the two mounting plates; a rotating shaft is fixed in the mounting gap; a ring groove is provided on the clamping plate; an elastic sliding ring is rotatably installed in the ring groove; a plurality of hard clamping pieces are evenly distributed on the sliding ring; when the operating device drives the two clamping plates to rotate around the rotating shaft and move away from the reset, the sliding ring is rotated in the ring groove by a preset angle to switch the clamping pieces at the clamping ends of the two clamping plates. The clamping pieces at the clamping ends of the two clamping plates are switched each time the clamping plates are opened, so that the plurality of clamping pieces on the sliding ring are cyclically switched and used, so as to reduce the wear of the clamping pieces at the clamping ends of the two clamping plates for clamping the needle, and extend the service life of the needle holder.

Description

Technical Field

[0001] The invention relates to the technical field of surgery, and in particular to a rotatable laparoscope needle holder. Background Art

[0002] Laparoscopic surgery has been widely accepted in many pediatric surgical fields. However, due to the limited freedom of surgical forceps, laparoscopic surgery is more technically and ergonomically difficult than open surgery. The purpose of using needle holders in laparoscopic surgery is to achieve reliable intracavitary suturing in a small space. With the continuous advancement of science and technology, the development of needle holders is increasingly tending towards diversification.

[0003] In the prior art, for example, the Chinese patent with the announcement number CN109793545B, entitled A Laparoscopic Needle Holder with a Rotatable Needle Holding End, discloses a technical solution in which the jaws include a left drive rod, a right drive rod, a left clamp body, and a right clamp body, and the left clamp body and the right clamp body are hinged in a scissor-like manner. The lower ends of the left and right drive rods are rotatably connected to the connecting rod extending from the upper end of the sliding block via the same rotating shaft, and the upper end of the left drive rod is rotatably connected to the lower end of the right clamp body. When it is necessary to clamp the needle, the left and right clamp bodies are driven to rotate closer to each other and close together to clamp the needle. However, the frequent contact between the jaws and the needle causes significant wear on specific parts of the jaws, causing uneven wear on the contact surface of the jaws during multiple use cycles, affecting the clamping force of the jaws, and thus affecting the use effect of the needle holder. Summary of the invention

[0004] The present invention provides a rotatable laparoscope needle holder to solve the above problem.

[0005] The present invention discloses a rotatable laparoscope needle holder, which adopts the following technical scheme: a rotatable laparoscope needle holder, comprising a fixing cylinder, a clamping plate, an operating device and a transmission device.

[0006] The fixed cylinder is arranged in front and back; a rotating cylinder is arranged in front of the fixed cylinder; the rotating cylinder and the fixed cylinder are arranged coaxially, and the rear end of the rotating cylinder and the front end of the fixed cylinder are rotatably matched; a first reference surface is arranged at the front end of the rotating cylinder; the axis of the rotating cylinder falls within the first reference surface; two mounting plates symmetrical to the first reference surface are arranged at the front side of the rotating cylinder; the mounting plates and the first reference surface are fixed to the front end of the rotating cylinder in parallel; a mounting gap is surrounded by the two mounting plates; a second reference surface is arranged in the mounting gap; the second reference surface is perpendicular to the first reference surface, and the axis of the rotating cylinder falls within the second reference surface; a rotating shaft is fixed in the mounting gap; the axis of the rotating shaft falls within the first reference surface and is perpendicular to the second reference surface.

[0007] A clamping plate is arranged on the front side of the mounting plate; two clamping plates are provided, which are symmetrically arranged with respect to the second reference surface; the two clamping plates form a V-shaped clamping gap with the opening facing forward; the front end of the clamping plate is set as the clamping end; the clamping plate is perpendicular to the first reference surface; a connecting plate is fixed to the rear end of the clamping plate; the connecting plate is arranged between the two mounting plates and is parallel to the first reference surface; the connecting plate is rotatably mounted on the rotating shaft; a ring groove with the opening facing the second reference surface is provided on the side wall of the clamping plate close to the second reference surface; an elastic sliding ring is rotatably mounted in the ring groove; the axis of the sliding ring is perpendicular to the clamping plate; and a plurality of hard clamping plates are evenly fixed on the end surface of the sliding ring close to the second reference surface.

[0008] The operating device is arranged at the rear end of the fixed cylinder. The operating device drives the two clamps to rotate around the rotating axis and approach each other, so that the clamping gap becomes smaller, and the clamping pieces at the clamping ends of the two clamps approach each other and clamp the needle. The rear drive makes the two clamps rotate around the rotating axis and move away from each other to reset, so that the clamping pieces at the clamping ends of the two clamps move away from each other and release the needle. When the needle angle needs to be adjusted, the operating device drives the rotating cylinder to rotate.

[0009] When the operating device drives the two clamping plates to rotate around the rotating shaft and move away from the reset position, the transmission device rotates the sliding ring in the ring groove at a preset angle to switch the clamping pieces at the clamping ends of the two clamping plates. The clamping pieces at the clamping ends of the two clamping plates are switched each time the clamping plates are opened, so that the multiple clamping pieces on the sliding ring are cyclically switched and used, thereby reducing the wear of the clamping pieces at the clamping ends of the two clamping plates for clamping the needle, and extending the service life of the needle holder.

[0010] Furthermore, the connecting plates of the two clamps are distributed axially between the two mounting plates along the rotating shaft; two transmission devices are provided, and correspond one to one with the clamps; the transmission device is provided between adjacent mounting plates and connecting plates, and includes a transmission groove, a matching groove, and a transmission rod.

[0011] The transmission groove is arranged on the end face of the mounting plate close to the connecting plate; the transmission groove is an arc groove; the center of the transmission groove falls on the axis of the rotating shaft; and an end face gear ring is fixed in the transmission groove.

[0012] The matching groove is arranged on the end surface of the connecting plate close to the corresponding mounting plate and is arranged on the front side of the rotating shaft; a transmission ring is rotatably installed in the matching groove; the axis of the transmission ring is arranged along the length direction of the clamping plate; the transmission ring and the end face gear ring are meshed for transmission; when the connecting plate rotates around the rotating shaft, the end face gear ring drives the transmission ring to rotate.

[0013] The transmission rod is arranged at the front side of the transmission ring and extends along the length direction of the clamping plate; the transmission rod is rotatably installed in the connecting plate; a synchronization component is arranged at the front end of the transmission rod; the synchronization component is used to drive the sliding ring to rotate in the ring groove when the transmission rod rotates.

[0014] The rear end of the transmission rod and the transmission ring rotate in coordination; a one-way component is provided between the rear end of the transmission rod and the inner wall of the transmission ring; when the two clamping plates rotate around the rotating shaft and move away from the reset, the one-way component causes the transmission ring to drive the transmission rod to rotate synchronously, so as to drive the sliding ring to rotate in the ring groove through the synchronous component, so that the sliding ring rotates in the ring groove by a preset angle, so that the clamping pieces at the clamping ends of the two clamping plates are switched, and when the two clamping plates rotate around the rotating shaft and approach each other, the one-way component causes the transmission ring to rotate relative to the transmission rod.

[0015] Furthermore, the synchronization assembly includes a synchronization ring and a synchronization rod; the synchronization ring is an elastic ring; the synchronization ring is arranged on the side of the sliding ring away from the second reference surface and is arranged in the ring groove; the synchronization ring is fixedly connected to the end of the sliding ring away from the second reference surface; the outer wall of the synchronization ring is a conical wall.

[0016] The synchronization rod is arranged at the front side of the transmission rod and extends along the length direction of the clamping plate; the synchronization rod is rotatably installed in the connecting plate; the rear end of the synchronization rod and the front end of the transmission rod are meshed through gears; the front end of the synchronization rod is fixedly connected to a conical wheel; the conical wheel meshes with the conical wall of the synchronization ring. When the transmission rod rotates, the synchronization rod is driven to rotate, and the synchronization rod drives the synchronization ring to rotate in the ring groove through the conical wheel, and the synchronization ring drives the sliding ring to rotate in the ring groove.

[0017] Furthermore, the one-way component includes a ratchet and a pawl; a plurality of ratchets are provided, which are evenly distributed on the side wall of the transmission rod along the circumference of the transmission rod; the pawl is hinged on the inner wall of the transmission ring; a torsion spring is connected between the hinge shaft of the pawl and the transmission ring; the torsion spring causes the pawl to abut between two adjacent ratchets; when the two splints rotate around the rotating axis and move away from reset, the pawl and the ratchet are unidirectionally meshed, and when the two splints rotate around the rotating axis and approach each other, the pawl rotates relative to the ratchet around the axis of the transmission rod.

[0018] Furthermore, the operating device includes an operating rod and a hand-operated assembly; the operating rod is coaxially arranged in the fixed cylinder; the side wall of the front end of the operating rod and the rotating cylinder are slidably matched forward and backward through splines; a hinge shaft is fixed to the front end of the operating rod; the axis of the hinge shaft is parallel to the axis of the rotating shaft; the axis of the hinge shaft falls within the second reference plane; two pull rods are arranged at the front end of the operating rod; the pull rods are arranged front and back, and the two pull rods are in a V shape with the opening facing forward; the pull rods and the connecting plates correspond one to one; the rear end of the pull rods is hinged on the hinge shaft; the front ends of the pull rods are fixedly connected with pins; the pins are arranged at the rear side of the rotating shaft and are on the side of the second reference plane; the pins are rotatably installed on the connecting plate. The hand-operated assembly is used to drive the operating rod to move backward when clamping the needle, pull the pull rod, so that the angle between the two pull rods becomes smaller, and the pull rod drives the clamp plate to rotate around the rotating shaft through the pin, so that the two clamp plates are close to each other, so that the clamping pieces at the clamping ends of the two clamp plates clamp the needle.

[0019] Furthermore, the hand-operated assembly includes a static handle and a dynamic handle; the static handle is arranged up and down and is in a V-shape with the small end facing backwards; the upper end of the static handle is fixed to the rear end of the fixed cylinder; the dynamic handle is arranged at the rear side of the static handle; the dynamic handle is arranged up and down and is in a V-shape with the small end facing the static handle; the upper end of the dynamic handle is at the rear side of the operating rod; the V-shaped small end of the dynamic handle is rotatably installed at the V-shaped small end of the static handle through the mounting shaft; the static handle and the dynamic handle are in an X-shape; a matching rod is provided at the upper end of the dynamic handle; the matching rod and the operating rod are coaxial; the rear end of the matching rod is hinged with the dynamic handle, and a rotating cylinder is rotatably installed at the front end; the rotating cylinder is threadedly connected with the operating rod. The operator holds the lower ends of the static handle and the dynamic handle with his hands, so that the lower ends of the static handle and the dynamic handle are close to each other, and the upper ends of the static handle and the dynamic handle are moved away from each other with the mounting shaft as a fulcrum, thereby driving the operating rod to move backwards. When the needle angle needs to be adjusted, the rotary cylinder is rotated, and the operating rod is driven to rotate through the rotary cylinder. The operating rod drives the rotary cylinder to rotate through the spline, and the rotary cylinder drives the mounting plate to rotate. The mounting plate drives the clamping plate to rotate, and the clamping plate drives the clamping piece to rotate, thereby adjusting the needle clamping angle.

[0020] Furthermore, the lower end of the static handle is in a ring shape; the lower end of the dynamic handle is in a ring shape, which is convenient for inserting fingers.

[0021] Furthermore, the end surface of the clamping piece is serrated, so as to increase the contact area between the clamping piece and the needle.

[0022] Furthermore, the lower end of the static handle is covered with a latex layer; the lower end of the dynamic handle is covered with a latex layer.

[0023] Furthermore, the fixed cylinder includes a cylinder body and a replacement cylinder; the cylinder body is arranged at the front side of the replacement cylinder; the front end of the cylinder body and the rear end of the rotating cylinder are rotationally matched to realize the rotational match between the fixed cylinder and the rotating cylinder; the cylinder body and the replacement cylinder are threadedly connected. When the manual assembly needs to be replaced, the operating rod is clamped with pliers, the knob is turned to separate the rotating cylinder from the operating rod, and then the replacement cylinder is rotated to separate the replacement cylinder from the cylinder body, thereby realizing the replacement of the manual assembly.

[0024] The beneficial effects of the present invention are:

[0025] 1. When the operating device drives the two clamping plates to rotate around the rotating shaft and move away from the reset position, the sliding ring rotates a preset angle in the ring groove to switch the clamping pieces at the clamping ends of the two clamping plates. Each time the clamping plates are opened, the clamping pieces at the clamping ends of the two clamping plates are switched, so that the multiple clamping pieces on the sliding ring are cyclically switched and used, so as to reduce the wear of the clamping pieces at the clamping ends of the two clamping plates for clamping the needle, and extend the service life of the needle holder.

[0026] 2. When the needle angle needs to be adjusted, rotate the rotary cylinder, which drives the operating rod to rotate. The operating rod drives the rotary cylinder to rotate through the spline, the rotary cylinder drives the mounting plate to rotate, the mounting plate drives the clamping plate to rotate, and the clamping plate drives the clamping piece to rotate, thereby adjusting the needle clamping angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0028] Figure 1 It is a structural schematic diagram of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0029] Figure 2 It is a schematic diagram of a fixed cylinder, a clamping plate, and a rotating cylinder of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0030] Figure 3 An exploded view of a fixed cylinder, a clamping plate, and a rotating cylinder of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0031] Figure 4 A cross-sectional view of a fixed cylinder, a clamping plate, and a rotating cylinder of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0032] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0033] Figure 6 for Figure 4 The enlarged view of point B in the middle;

[0034] Figure 7 An exploded view of a clamping plate and a sliding ring of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0035] Figure 8 A front view of a clamping plate and a sliding ring of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0036] Fig. 9 for Figure 8 Sectional view at CC;

[0037] Fig.10 for Fig. 9 The enlarged view of point D in the middle;

[0038] Fig.11 A side view of a clamping plate of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0039] Fig.12 for Fig.11 Sectional view at EE;

[0040] Fig.13It is a schematic diagram of a rotating drum and a mounting plate of an embodiment of a rotatable laparoscope needle holder of the present invention;

[0041] Fig.14 The figure is a schematic diagram of a clamping plate, a pull rod and an operating rod of an embodiment of a rotatable laparoscope needle holder of the present invention.

[0042] In the figure: 100, fixed cylinder; 110, rotating cylinder; 111, mounting plate; 112, rotating shaft; 113, rotating cylinder; 200, clamping plate; 210, ring groove; 220, connecting plate; 230, sliding ring; 240, clamping piece; 300, operating lever; 310, hinge shaft; 400, pulling rod; 410, pin shaft; 510, static handle; 520, moving handle; 610, transmission groove; 620, matching groove; 621, transmission ring; 630, transmission rod; 640, synchronization ring; 650, synchronization rod; 651, tapered wheel. DETAILED DESCRIPTION

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] An embodiment of a rotatable laparoscope needle holder of the present invention is as follows Figures 1 to 14 As shown: a rotatable laparoscope needle holder includes a fixed cylinder 100, a clamping plate 200, an operating device, and a transmission device.

[0045] The fixed cylinder 100 is arranged front and back; a rotating cylinder 110 is arranged on the front side of the fixed cylinder 100; the rotating cylinder 110 and the fixed cylinder 100 are arranged coaxially, and the rear end of the rotating cylinder 110 and the front end of the fixed cylinder 100 are rotatably matched; a first reference surface is provided at the front end of the rotating cylinder 110; the axis of the rotating cylinder 110 falls within the first reference surface; two mounting plates 111 symmetrical about the first reference surface are provided on the front side of the rotating cylinder 110; the mounting plates 111 are fixed to the front end of the rotating cylinder 110 in parallel with the first reference surface; a mounting gap is surrounded by the two mounting plates 111; a second reference surface is provided in the mounting gap; the second reference surface is perpendicular to the first reference surface, and the axis of the rotating cylinder 110 falls within the second reference surface; a rotating shaft 112 is fixed in the mounting gap; the axis of the rotating shaft 112 falls within the first reference surface and is perpendicular to the second reference surface.

[0046] The clamping plate 200 is arranged at the front side of the mounting plate 111; there are two clamping plates 200, which are symmetrically arranged about the second reference surface; the two clamping plates 200 enclose a V-shaped clamping gap with an opening facing forward; the front end of the clamping plate 200 is set as a clamping end; the clamping plate 200 is perpendicular to the first reference surface; a connecting plate 220 is fixed to the rear end of the clamping plate 200; the connecting plate 220 is arranged between the two mounting plates 111 and is parallel to the first reference surface; the connecting plate 220 is rotatably mounted on the rotating shaft 112; a ring groove 210 with an opening facing the second reference surface is provided on the side wall of the clamping plate 200 close to the second reference surface; an elastic sliding ring 230 is rotatably mounted in the ring groove 210; the axis of the sliding ring 230 is perpendicular to the clamping plate 200; a plurality of hard clamping sheets 240 are evenly fixed on the end surface of the sliding ring 230 close to the second reference surface. The end surface of the clamping sheet 240 is serrated. It is used to increase the contact area between the clamping sheet 240 and the needle.

[0047] The operating device is arranged at the rear end of the fixed cylinder 100. The operating device drives the two clamps 200 to rotate and approach around the rotating shaft 112, so that the clamping gap becomes smaller, and the clamping pieces 240 at the clamping ends of the two clamps 200 are close to and clamp the needle. The rear drive is used to rotate the two clamps 200 around the rotating shaft 112 and move away from each other for reset, so that the clamping pieces 240 at the clamping ends of the two clamps 200 move away from each other and release the needle. When the needle angle needs to be adjusted, the operating device drives the rotating cylinder 110 to rotate. The operating device includes an operating rod 300 and a hand-operated assembly; the operating rod 300 is coaxially arranged in the fixed cylinder 100; the side wall at the front end of the operating rod 300 and the rotating cylinder 110 are slidably matched back and forth through a spline; a hinge shaft 310 is fixed to the front end of the operating rod 300; the axis of the hinge shaft 310 is parallel to the axis of the rotating shaft 112; the axis of the hinge shaft 310 falls within the second reference plane; two pull rods 400 are arranged at the front end of the operating rod 300; the pull rods 400 are arranged front and back, and the two pull rods 400 are in a V shape with the opening facing forward; the pull rods 400 and the connecting plates 220 correspond one to one; the rear ends of the pull rods 400 are hinged on the hinge shaft 310; the front ends of the pull rods 400 are fixedly connected with pin shafts 410; the pin shafts 410 are arranged on the rear side of the rotating shaft 112 and are on one side of the second reference plane; the pin shafts 410 are rotatably installed on the connecting plate 220. The hand-operated assembly is used to drive the operating rod 300 to move backward and pull the pull rod 400 when clamping the needle, so that the angle between the two pull rods 400 becomes smaller. The pull rod 400 drives the clamping plate 200 to rotate around the rotating shaft 112 through the pin 410, so that the two clamping plates 200 are close to each other, so that the clamping pieces 240 at the clamping ends of the two clamping plates 200 clamp the needle.

[0048] The hand-operated assembly includes a static handle 510 and a dynamic handle 520; the static handle 510 is arranged up and down and is in a V shape with the small end facing backwards; the upper end of the static handle 510 is fixed to the rear end of the fixed cylinder 100; the dynamic handle 520 is arranged on the rear side of the static handle 510; the dynamic handle 520 is arranged up and down and is in a V shape with the small end facing the static handle 510; the upper end of the dynamic handle 520 is at the rear side of the operating rod 300; the V-shaped small end of the dynamic handle 520 is rotatably installed at the V-shaped small end of the static handle 510 through the installation shaft; the static handle 510 and the dynamic handle 520 are X-shaped; a matching rod is provided at the upper end of the dynamic handle 520; the matching rod and the operating rod 300 are coaxial; the rear end of the matching rod is hinged to the dynamic handle 520, and the front end is rotatably installed with a rotary cylinder 113; the rotary cylinder 113 and the operating rod 300 are threadedly connected. The operator holds the lower ends of the static handle 510 and the dynamic handle 520 by hand, so that the lower ends of the static handle 510 and the dynamic handle 520 are close to each other, and the upper ends of the static handle 510 and the dynamic handle 520 are separated from each other with the mounting shaft as the fulcrum, thereby driving the operating rod 300 to move backward. The lower end of the static handle 510 is annular; the lower end of the dynamic handle 520 is annular. It is convenient to insert a finger. The lower end of the static handle 510 is covered with a latex layer; the lower end of the dynamic handle 520 is covered with a latex layer. When it is necessary to adjust the angle of the needle, the rotary cylinder 113 is rotated, and the operating rod 300 is driven to rotate through the rotary cylinder 113, and the operating rod 300 is driven to rotate through the spline, and the rotary cylinder 110 drives the mounting plate 111 to rotate, and the mounting plate 111 drives the clamping plate 200 to rotate, and the clamping plate 200 drives the clamping piece 240 to rotate, thereby realizing the adjustment of the clamping angle of the needle.

[0049] When the operating device drives the two clamping plates 200 to rotate around the rotating shaft 112 and move away from the reset, the transmission device causes the sliding ring 230 to rotate at a preset angle in the ring groove 210, so that the clamping pieces 240 at the clamping ends of the two clamping plates 200 are switched. The clamping pieces 240 at the clamping ends of the two clamping plates 200 are switched each time the clamping plates 200 are opened, so that the multiple clamping pieces 240 on the sliding ring 230 are cyclically switched and used, so as to reduce the wear of the clamping pieces 240 at the clamping ends of the two clamping plates 200 for clamping the needle, and extend the service life of the needle holder. The connecting plates 220 of the two clamping plates 200 are axially distributed between the two mounting plates 111 along the rotating shaft 112; there are two transmission devices, and they correspond to the clamping plates 200 one by one; the transmission device is arranged between the adjacent mounting plates 111 and the connecting plates 220, and includes a transmission groove 610, a matching groove 620, and a transmission rod 630.

[0050] The transmission groove 610 is arranged on the end face of the mounting plate 111 close to the connecting plate 220; the transmission groove 610 is an arc groove; the center of the transmission groove 610 falls on the axis of the rotating shaft 112; an end face toothed ring is fixed in the transmission groove 610. The matching groove 620 is arranged on the end face of the connecting plate 220 close to the corresponding mounting plate 111 and is arranged on the front side of the rotating shaft 112; a transmission ring 621 is rotatably installed in the matching groove 620; the axis of the transmission ring 621 is arranged along the length direction of the clamping plate 200; the transmission ring 621 and the end face toothed ring are meshed for transmission; when the connecting plate 220 rotates around the rotating shaft 112, the end face toothed ring drives the transmission ring 621 to rotate.

[0051] The transmission rod 630 is arranged at the front side of the transmission ring 621 extending along the length direction of the clamping plate 200; the transmission rod 630 is rotatably installed in the connecting plate 220; a synchronization component is arranged at the front end of the transmission rod 630; the synchronization component is used to drive the sliding ring 230 to rotate in the ring groove 210 when the transmission rod 630 rotates. The rear end of the transmission rod 630 and the transmission ring 621 are rotationally matched; a one-way component is arranged between the rear end of the transmission rod 630 and the inner wall of the transmission ring 621; when the two clamping plates 200 rotate around the rotating shaft 112 and move away from the reset, the one-way component drives the transmission ring 621 to drive the transmission rod 630 to rotate synchronously, so as to drive the sliding ring 230 to rotate in the ring groove 210 through the synchronization component, so that the sliding ring 230 rotates in the ring groove 210 by a preset angle, so that the clamping pieces 240 at the clamping ends of the two clamping plates 200 are switched, and when the two clamping plates 200 rotate around the rotating shaft 112 and approach each other, the one-way component causes the transmission ring 621 to rotate relative to the transmission rod 630.

[0052] The synchronization assembly includes a synchronization ring 640 and a synchronization rod 650; the synchronization ring 640 is an elastic ring; the synchronization ring 640 is arranged on the side of the sliding ring 230 away from the second reference surface, and is arranged in the ring groove 210; the synchronization ring 640 is fixedly connected to the end of the sliding ring 230 away from the second reference surface; the outer wall of the synchronization ring 640 is a conical wall.

[0053] The synchronization rod 650 is arranged at the front side of the transmission rod 630 and extends along the length direction of the clamping plate 200; the synchronization rod 650 is rotatably installed in the connecting plate 220; the rear end of the synchronization rod 650 and the front end of the transmission rod 630 are driven by gear meshing; the front end of the synchronization rod 650 is fixedly connected to a conical wheel 651; the conical wheel 651 is meshed with the conical wall of the synchronization ring 640. When the transmission rod 630 rotates, the synchronization rod 650 is driven to rotate, and the synchronization rod 650 drives the synchronization ring 640 to rotate in the ring groove 210 through the conical wheel 651, and the synchronization ring 640 drives the sliding ring 230 to rotate in the ring groove 210.

[0054] The one-way component includes a ratchet and a pawl; there are multiple ratchets, which are evenly distributed on the side wall of the transmission rod 630 along the circumference of the transmission rod 630; the pawl is hinged on the inner wall of the transmission ring 621; a torsion spring is connected between the hinge shaft 310 of the pawl and the transmission ring 621; the torsion spring makes the pawl abut between two adjacent ratchets; when the two splints 200 rotate around the rotating shaft 112 and move away from reset, the pawl and the ratchet engage, and when the two splints 200 rotate around the rotating shaft 112 and approach each other, the pawl rotates relative to the ratchet around the axis of the transmission rod 630.

[0055] In this embodiment, the fixed cylinder 100 includes a cylinder body and a replacement cylinder; the cylinder body is arranged at the front side of the replacement cylinder; the front end of the cylinder body and the rear end of the rotating cylinder 110 are rotationally matched to realize the rotational match between the fixed cylinder 100 and the rotating cylinder 110; the cylinder body and the replacement cylinder are threadedly connected. When the hand-operated component needs to be replaced, the operating rod 300 is clamped with pliers, the knob rotating cylinder 113 is turned, the rotating cylinder 113 and the operating rod 300 are separated, and then the replacement cylinder is rotated to separate the replacement cylinder from the cylinder body, thereby realizing the replacement of the hand-operated component.

[0056] In combination with the above embodiments, the use principle and working process of the present invention are as follows: during use, when clamping the needle, the operator holds the lower ends of the static handle 510 and the dynamic handle 520 with hands, so that the lower ends of the static handle 510 and the dynamic handle 520 are close to each other, and with the installation axis as a fulcrum, the upper ends of the static handle 510 and the dynamic handle 520 are separated from each other, thereby driving the operating rod 300 to move backward, so that the angle between the two pull rods 400 becomes smaller, and the pull rod 400 drives the splint 200 to rotate around the rotating shaft 112 through the pin shaft 410, so that the two splints 200 are close to each other, so that the clamping pieces 240 at the clamping ends of the two splints 200 clamp the needle. During this process, the connecting plate 220 rotates relative to the mounting plate 111 around the rotating shaft 112, and the pawl rotates relative to the ratchet around the axis of the transmission rod 630, so that although the end gear ring drives the transmission ring 621 to rotate, the pawl rotates relative to the ratchet around the axis of the transmission rod 630, and the transmission ring 621 cannot drive the transmission rod 630 to rotate, and the sliding ring 230 and the clamping plate 200 are relatively stationary.

[0057] After the needle is used, the lower end of the static handle 510 and the lower end of the movable handle 520 are moved away from each other, and the upper end of the static handle 510 and the upper end of the movable handle 520 are moved closer to each other with the installation axis as a fulcrum, thereby driving the operating rod 300 to move forward, so that the angle between the two pull rods 400 becomes larger, and the pull rod 400 drives the splint 200 to rotate around the rotating shaft 112 through the pin shaft 410, so that the two splints 200 move away from each other. During this process, the connecting plate 220 rotates in the opposite direction relative to the mounting plate 111 around the rotating shaft 112, and the pawl and the ratchet engage, so that the end face gear ring drives the transmission ring 621 to rotate, and the transmission ring 621 drives the transmission rod 630 to rotate. When the transmission rod 630 rotates, it drives the synchronization rod 650 to rotate, and the synchronization rod 650 drives the synchronization ring 640 to rotate in the annular groove 210 through the conical wheel 651, and the synchronization ring 640 drives the sliding ring 230 to rotate in the annular groove 210, so that the sliding ring 230 rotates in the annular groove 210 at a preset angle, so that the clamping pieces 240 at the clamping ends of the two clamping plates 200 are switched. Among them, the preset angle is that when the movable handle 520 is reset to the point where the lower end of the movable handle 520 is at the maximum distance from the lower end of the static handle 510, the clamping piece 240 at the clamping end of the splint 200 switches to the adjacent clamping piece 240, so that the multiple clamping pieces 240 on the sliding ring 230 are cyclically switched and used, so as to reduce the wear of the clamping pieces 240 at the clamping ends of the two splints 200 for clamping the needle, thereby extending the service life of the needle holder.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotatable laparoscope needle holder, characterized in that: include: A fixed cylinder is arranged front and back; a rotating cylinder is arranged in front of the fixed cylinder; the rotating cylinder and the fixed cylinder are arranged coaxially, and the rear end of the rotating cylinder and the front end of the fixed cylinder are rotatably matched; a first reference surface is arranged at the front end of the rotating cylinder; the axis of the rotating cylinder falls within the first reference surface; two mounting plates are arranged symmetrically about the first reference surface at the front side of the rotating cylinder; the mounting plates are fixed to the front end of the rotating cylinder in parallel with the first reference surface; a mounting gap is formed between the two mounting plates; a second reference surface is arranged in the mounting gap; the second reference surface is perpendicular to the first reference surface, and the axis of the rotating cylinder falls within the second reference surface; a rotating shaft is fixed in the mounting gap; the axis of the rotating shaft falls within the first reference surface and is perpendicular to the second reference surface; A clamping plate is provided on the front side of the mounting plate; two clamping plates are provided and are symmetrically arranged with respect to the second reference surface; the two clamping plates enclose a V-shaped clamping gap with the opening facing forward; the front end of the clamping plate is set as a clamping end; the clamping plate is perpendicular to the first reference surface; A connecting plate is fixed at the rear end of the clamping plate; the connecting plate is arranged between the two mounting plates and is parallel to the first reference surface; the connecting plate is rotatably mounted on the rotating shaft; a ring groove with an opening facing the second reference surface is arranged on the side wall of the clamping plate close to the second reference surface; an elastic sliding ring is rotatably mounted in the ring groove; the axis of the sliding ring is perpendicular to the clamping plate; a plurality of hard clamping sheets are evenly fixed on the end surface of the sliding ring close to the second reference surface; The operating device is arranged at the rear end of the fixed cylinder. The operating device drives the two clamping plates to rotate around the rotating shaft and approach each other, so that the clamping gap becomes smaller. The rear drive is used to make the two clamping plates rotate around the rotating shaft and move away from each other to reset. When the needle angle needs to be adjusted, the operating device drives the rotating cylinder to rotate; The transmission device causes the sliding ring to rotate within the ring groove at a preset angle when the operating device drives the two clamping plates to rotate around the rotating shaft and move away from the reset position, so as to switch the clamping pieces at the clamping ends of the two clamping plates.

2. The rotatable laparoscope needle holder according to claim 1, characterized in that: The connecting plates of the two clamping plates are distributed between the two mounting plates along the axial direction of the rotating shaft; There are two transmission devices, which correspond to the clamping plates one by one. The transmission device is arranged between the adjacent mounting plates and the connecting plates, and includes a transmission groove, a matching groove, and a transmission rod. The transmission groove is arranged on the end surface of the mounting plate close to the connecting plate; the transmission groove is an arc groove; the center of the transmission groove falls on the axis of the rotating shaft; an end face gear ring is fixed in the transmission groove; The matching groove is arranged on the end surface of the connecting plate close to the corresponding mounting plate and is arranged on the front side of the rotating shaft; a transmission ring is rotatably installed in the matching groove; the axis of the transmission ring is arranged along the length direction of the clamping plate; the transmission ring and the end face gear ring are meshed for transmission; The transmission rod is arranged at the front side of the transmission ring and extends along the length direction of the clamping plate; the transmission rod is rotatably installed in the connecting plate; a synchronization component is arranged at the front end of the transmission rod; the synchronization component is used to drive the sliding ring to rotate in the ring groove when the transmission rod rotates; The rear end of the transmission rod and the transmission ring are rotatably matched; a one-way component is provided between the rear end of the transmission rod and the inner wall of the transmission ring; When the two splints rotate around the rotating shaft and move away from each other to reset, the one-way component causes the transmission ring to drive the transmission rod to rotate synchronously, so as to drive the sliding ring to rotate in the ring groove through the synchronization component. When the two splints rotate around the rotating shaft and move closer to each other, the one-way component causes the transmission ring to rotate relative to the transmission rod.

3. The rotatable laparoscope needle holder according to claim 2, characterized in that: The synchronization assembly comprises a synchronization ring and a synchronization rod; the synchronization ring is an elastic ring; the synchronization ring is arranged on a side of the sliding ring away from the second reference surface and is arranged in the ring groove; the synchronization ring is fixedly connected to an end of the sliding ring away from the second reference surface; the outer wall of the synchronization ring is a tapered wall; The synchronization rod is arranged on the front side of the transmission rod and extends along the length direction of the clamping plate; the synchronization rod is rotatably installed in the connecting plate; The rear end of the synchronization rod and the front end of the transmission rod are meshed and transmitted through gears; the front end of the synchronization rod is fixedly connected with a conical wheel; the conical wheel meshes with the conical wall of the synchronization ring.

4. The rotatable laparoscope needle holder according to claim 3, characterized in that: The one-way component includes a ratchet and a pawl; there are multiple ratchets, which are evenly distributed on the side wall of the transmission rod along the circumference of the transmission rod; the pawl is hinged on the inner wall of the transmission ring; a torsion spring is connected between the hinge shaft of the pawl and the transmission ring; the torsion spring makes the pawl abut between two adjacent ratchet teeth.

5. The rotatable laparoscope needle holder according to claim 4, characterized in that: The operating device includes an operating lever and a hand-operated component; The operating rod is coaxially arranged in the fixed cylinder; the side wall of the front end of the operating rod and the rotating cylinder are slidably matched forward and backward through splines; a hinge shaft is fixed to the front end of the operating rod; the axis of the hinge shaft is parallel to the axis of the rotating shaft; the axis of the hinge shaft falls within the second reference plane; two pull rods are arranged at the front end of the operating rod; the pull rods are arranged front and back, and the two pull rods are in a V shape with the opening facing forward; the pull rods and the connecting plates correspond to each other one by one; The rear end of the pull rod is hinged on the hinge shaft; the front end of the pull rod is fixedly connected with a pin shaft; the pin shaft is arranged at the rear side of the rotating shaft and is located on the side of the second reference plane; the pin shaft is rotatably mounted on the connecting plate; The hand-operated assembly is used to drive the operating rod to move backward and pull the pull rod when clamping the needle.

6. The rotatable laparoscope needle holder according to claim 5, characterized in that: The hand-operated components include a static handle and a dynamic handle; The static handle is arranged up and down and is in a V shape with the small end facing backwards; the upper end of the static handle is fixed to the rear end of the fixed tube; The movable handle is arranged at the rear side of the static handle; the movable handle is arranged up and down and is in a V shape with the small end facing the static handle; the upper end of the movable handle is at the rear side of the operating rod; the V-shaped small end of the movable handle is rotatably installed at the V-shaped small end of the static handle through a mounting shaft; the static handle and the movable handle are in an X shape; a matching rod is arranged at the upper end of the movable handle; the matching rod is coaxial with the operating rod; the rear end of the matching rod is hinged with the movable handle, and a rotary cylinder is rotatably installed at the front end; the rotary cylinder and the operating rod are threadedly connected.

7. The rotatable laparoscope needle holder according to claim 6, characterized in that: The lower end of the static handle is ring-shaped; the lower end of the dynamic handle is ring-shaped.

8. The rotatable laparoscope needle holder according to claim 1, characterized in that: The end surface of the clamping piece is serrated.

9. The rotatable laparoscope needle holder according to claim 6, characterized in that: The lower end of the static handle is covered with a latex layer; the lower end of the dynamic handle is covered with a latex layer.

10. The rotatable laparoscope needle holder according to claim 6, characterized in that: The fixed cylinder comprises a cylinder body and a replacement cylinder; the cylinder body is arranged at the front side of the replacement cylinder; the front end of the cylinder body and the rear end of the rotating cylinder are rotationally matched; the cylinder body and the replacement cylinder are threadedly connected.

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