Bending-adjustable clip applier

Abstract

The invention discloses an adjustable bending clip applier which comprises a control device, a clip rod arranged on the control device and a clip head device arranged on the clip rod, the clip rod comprises an outer sleeve, a rotating base arranged on the clip head device and connected with the outer sleeve, a mandrel and a steel cable, and the mandrel and the steel cable are arranged in the outer sleeve. The control device comprises an adjusting assembly, the two ends of the mandrel are rotationally connected with the tong head device and the adjusting assembly respectively, the mandrel is used for controlling opening and closing of the tong head device, the two ends of the steel cable are connected with the rotating base and the adjusting assembly respectively, and the steel cable is used for controlling bending adjustment of the tong head device. Compared with the prior art, the bending-adjustable forceps head device has the advantages that the moving range of the forceps head in the cavity is increased in the clinical use process, aiming at complex lesions in a narrow space area, a doctor can conveniently adjust the angle, the operation time is shortened, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to an adjustable curved clip applier. Background Art

[0002] In order to fully expose the surgical field of view or block the connection during surgery, the blood vessels or other body fluid tubes in the incision need to be ligated to stop bleeding or discharge. There are currently two methods of ligation. One is to clamp the blood vessels with hemostatic forceps and then ligate them with sutures, but this method is more troublesome to operate and reduces the efficiency of the operation; the other method is to block blood flow or ligate other tissues with ligation clips. Due to the advantages of ligation clips being more efficient and convenient in clinical use, their use in endoscopic surgery and open surgery has increased significantly.

[0003] Since the ligation clip is very small, it can only be operated with a clip applier. Most existing clip appliers are straight-rod single-shot clip appliers with thicker rods and fixed clamp heads, which can only complete opening and closing movements. During laparoscopic surgery using a multi-channel single-hole puncture device, the diameter of the rod of the clip applier is relatively large, and it is easy to cross-collide with other laparoscopic instruments when occupying the puncture channel, causing the "chopstick effect", which affects the doctor's operation. In addition, for situations where the intracavitary ligation position is narrow and remote, the movement of the straight-rod clip applier is restricted, which increases the difficulty of the doctor's operation and increases the operation time. In response to existing clinical pain points, a clip applier with a small diameter rod and an adjustable bend at the head end has been specially developed to facilitate the doctor's operation during surgery and reduce the ligation time. Summary of the invention

[0004] The purpose of the present invention is to provide a clip applier with adjustable bending, which can increase the range of motion of the clamp head and conveniently and quickly reach the lesion for ligation in the case of limited hand movements of the doctor during laparoscopic surgery.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A bending clamp comprises a control device, a clamp rod arranged on the control device and a clamp head device arranged on the clamp rod, the clamp rod comprises an outer sleeve, a rotating base arranged on the clamp head device and connected to the outer sleeve, and a core shaft and a steel cable arranged in the outer sleeve, the control device comprises an adjustment component, the two ends of the core shaft are rotatably connected to the clamp head device and the adjustment component respectively, the core shaft is used to control the opening and closing of the clamp head device, the two ends of the steel cable are respectively connected to the rotating base and the adjustment component, and the steel cable is used to control the bending adjustment of the clamp head device.

[0007] Preferably, the clamp head device comprises a first clamp head and a second clamp head hingedly connected by a pin shaft, and a transmission block hingedly arranged at the tail of the first clamp head and the second clamp head by a pin shaft, and the transmission blocks are hingedly connected to the core shaft.

[0008] Preferably, the area of ​​the core shaft close to the transmission block is a soft shaft section.

[0009] Preferably, the outer sleeve is a reducing rod, and the diameter of the area close to the clamp head device is a large diameter.

[0010] Preferably, the adjustment assembly includes a shell, a first motion control member and a second motion control member arranged inside the shell and meshing with each other, a rotating button arranged outside the shell, and a bending adjustment button arranged on the rotating button, a winding disk is arranged on the bending adjustment button and rotates synchronously with the bending adjustment button, one end of the steel cable away from the rotating base is connected to the winding disk, the outer sleeve is fixedly connected to the rotating button, the core shaft passes through the rotating button without contacting the bending adjustment button, and is slidably connected to the first motion control member.

[0011] Preferably, the first motion control member and the second motion control member are gears.

[0012] Preferably, a slide groove is provided on the first motion control member, the core shaft is slidably arranged in the slide groove, and the core shaft portion arranged in the slide groove is a spherical ball.

[0013] Preferably, it further comprises a pressing handle, one end of which is connected to the second motion control member, and the other end of which extends out of the shell.

[0014] Preferably, a handle is also provided on the shell.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] Compared with the prior art, the present invention has an adjustable bending forceps head device, which increases the range of movement of the forceps head in the cavity during clinical use. It is convenient for doctors to adjust the angle for complex lesions in narrow spatial areas, reduces operation time, and greatly improves operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 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 work.

[0018] Figure 1It is a schematic diagram of the appearance of the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of the control device of the present invention;

[0020] Figure 3 An exploded view of the clamp head device;

[0021] Figure 4 It is a schematic diagram of the structure of the steel cable adjustment in the adjustment assembly;

[0022] Figure 5 It is a schematic diagram of the structure of the bending adjustment device of the clamp head;

[0023] Among them, 1. clamp head device; 2. clamp rod; 3. control device; 4. first clamp head; 5. second clamp head; 6. rotating base; 7. transmission block; 8. outer sleeve; 9. steel cable; 10. rotating button; 11. bending knob; 12. core shaft; 13. first motion control part; 14. pressing handle; 15. handle shell; 16. first motion control part; 17. pin shaft; 18. flexible shaft section. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a clip applier with adjustable bending, which can increase the range of motion of the clamp head and conveniently and quickly reach the lesion for ligation in the case of limited hand movements of the doctor during laparoscopic surgery.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] refer to Figures 1 to 5, an adjustable bending clamp, comprising a control device, a clamp rod arranged on the control device, and a clamp head device arranged on the clamp rod, the clamp rod comprising an outer sleeve, a rotating base arranged on the clamp head device and connected to the outer sleeve, and a core shaft and a steel cable arranged in the outer sleeve, the control device comprising an adjusting component, the two ends of the core shaft are rotatably connected to the clamp head device and the adjusting component respectively, the core shaft is used to control the opening and closing of the clamp head device, the two ends of the steel cable are respectively connected to the rotating base and the adjusting component, and the steel cable is used to control the bending of the clamp head device; compared with the prior art, the present invention has an adjustable bending clamp head device, which increases the range of movement of the clamp head in the cavity during clinical use, is convenient for doctors to adjust the angle for complex lesions in narrow spatial areas, reduces operation time, and greatly improves operation efficiency.

[0028] refer to Figures 2 to 3 The pliers head device includes a first pliers head and a second pliers head hinged by a pin shaft, and a transmission block hinged by a pin shaft and arranged at the tail of the first pliers head and the second pliers head, and the transmission blocks are hinged to the core shaft.

[0029] refer to Figure 3 The clamp rod includes an outer sleeve, a core shaft, and a steel cable. The outer sleeve can adopt a reducing rod. The diameter of the connecting end with the clamp head device is thicker, and the diameter of the rear section body is thinner, which reduces the occupation of the puncture channel and saves space. The core shaft and the steel cable are built into the outer sleeve. The core shaft is a soft shaft in the connecting section of the clamp head device. When the clamp head is adjusted to bend, the core shaft can bend. When the knob is rotated to control the rotation of the clamp head device, the clamp rod rotates synchronously.

[0030] refer to Figure 2 The adjustment assembly includes a housing, a first motion control member and a second motion control member disposed inside the housing and meshing with each other, a rotating button disposed outside the housing, and a bending button disposed on the rotating button, a winding disk is disposed on the bending button and rotates synchronously with the bending button, one end of the steel cable away from the rotating base is connected to the winding disk, the outer sleeve is fixedly connected to the rotating button, the mandrel passes through the rotating button and does not contact the bending button, and is slidably connected to the first motion control member

[0031] refer to Figure 2 , the first motion control member and the second motion control member are both gears.

[0032] refer to Figure 2 The first motion control member is provided with a slide groove, the core shaft is slidably arranged in the slide groove, and the core shaft part arranged in the slide groove is a spherical ball.

[0033] Furthermore, while the first motion control component drives the core shaft to move axially, the core shaft can realize self-rotation in the circumferential direction. The other end of the outer sleeve is connected and fixed on the rotating knob. When the knob is rotated, the outer sleeve and the clamp head device are driven to rotate in the circumferential direction. The steel cable is wrapped around the pulley on the bending knob to form an annular belt transmission. When the bending knob is rotated, one end of the steel cable is tightened and the other end is relaxed, driving the rotating base of the clamp head device to rotate left and right, thereby realizing the bending adjustment of the clamp.

[0034] refer to Figure 2 , also includes a pressing handle, one end of which is connected to the second motion control member, and the other end of which extends out of the shell.

[0035] refer to Figure 2 The shell is also provided with a handle.

[0036] The method of use of the present invention is as follows:

[0037] When the instrument is in use, the hand holds the pressing handle tightly so that the gear of the second motion control component meshes and rotates with the gear of the first motion control component. The rotation of the first motion control component drives the core shaft to retreat axially. The retreat of the core shaft drives the transmission block to tighten and drive one end of the two pliers heads to close, thereby driving the pliers heads to close. Similarly, release the pressing handle, the core shaft moves forward, pushes the two transmission blocks apart, and drives the pliers heads to open.

[0038] Turning the rotating knob drives the clamp head device and the clamp rod to rotate in a circular direction as a whole.

[0039] The bending adjustment knob is turned to control the transmission of the steel cable belt, which drives the rotating base to rotate, thereby controlling the bending adjustment of the clamp head device.

[0040] Furthermore, the first forceps head and the second forceps head are not limited to clamp applicators, but can be openable and closable forceps such as needle holding forceps, separating forceps, scissors, grasping forceps, etc.

[0041] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An adjustable curved clip applier, characterized in that: It includes a control device, a clamp rod arranged on the control device, and a clamp head device arranged on the clamp rod, the clamp rod includes an outer sleeve, a rotating base arranged on the clamp head device and connected to the outer sleeve, and a core shaft and a steel cable arranged in the outer sleeve, the control device includes an adjustment component, the two ends of the core shaft are rotatably connected to the clamp head device and the adjustment component respectively, the core shaft is used to control the opening and closing of the clamp head device, the two ends of the steel cable are respectively connected to the rotating base and the adjustment component, and the steel cable is used to control the bending adjustment of the clamp head device.

2. The adjustable curved clip applier according to claim 1, characterized in that: The clamp head device comprises a first clamp head and a second clamp head hinged by a pin shaft, and a transmission block hinged by a pin shaft and arranged at the tail of the first clamp head and the second clamp head, and the transmission blocks are hinged to the core shaft.

3. The adjustable curved clip applier according to claim 2, characterized in that: The area of ​​the core shaft close to the transmission block is a soft shaft section.

4. The adjustable curved clip applier according to claim 3, characterized in that: The outer sleeve is a reducing rod, and the diameter of the area close to the clamp head device is a large diameter.

5. The adjustable curved clip applier according to claim 4, characterized in that: The adjustment assembly includes a shell, a first motion control member and a second motion control member that are arranged inside the shell and are meshed with each other, a rotating button that is arranged outside the shell, and a bending adjustment button that is arranged on the rotating button. A winding disk is arranged on the bending adjustment button and rotates synchronously with the bending adjustment button. One end of the steel cable away from the rotating base is connected to the winding disk, the outer sleeve is fixedly connected to the rotating button, the core shaft passes through the rotating button without contacting the bending adjustment button, and is slidably connected to the first motion control member.

6. The adjustable curved clip applier according to claim 5, characterized in that: The first motion control member and the second motion control member are both gears.

7. The adjustable curved clip applier according to claim 6, characterized in that: The first motion control member is provided with a slide groove, the core shaft is slidably arranged in the slide groove, and the core shaft portion arranged in the slide groove is a spherical ball.

8. The adjustable curved clip applier according to claim 7, characterized in that: It also includes a pressing handle, one end of which is connected to the second motion control member, and the other end of which extends out of the shell.

9. The adjustable curved clip applier according to claim 8, characterized in that: The shell is also provided with a handle.

Images