Endoscope and adjustable wire rope lifting clamp mechanism

Abstract

The present invention discloses a lifting mechanism and an endoscope of an adjustable wire rope, wherein the lifting mechanism comprises a lifting device, a wire rope, a guide shaft and a slider body. The guide shaft is connected to the other end of the wire rope, and one or more first adjustment slots are arranged on the guide shaft; the slider body is provided with a sliding hole for the guide shaft to slide along the length direction of the wire rope, and one or more second adjustment holes are arranged on the slider body. The first adjustment slot and the second adjustment hole are locked by fasteners to achieve adjustable wire rope length. The lifting mechanism adjusts the wire rope length by cooperating with the first adjustment slot and the second adjustment holes at different positions, and does not need to unsolder the connection between the wire rope and the guide shaft, nor does it need to intercept the wire rope, which effectively shortens the length adjustment time of the wire rope of the lifting mechanism and improves the length adjustment efficiency of the wire rope.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an endoscope and a lifting clamp mechanism with an adjustable steel wire rope. Background Art

[0002] With the development of science and technology, endoscopes are increasingly used in modern minimally invasive surgeries. They can enter the stomach through the mouth or other natural orifices into the body. The head of the endoscope is used to extend into the human body. The head can be bent in various directions by operation to detect pipes or body cavities, and the image of the corresponding part can be obtained through the optical system of the head for observation, photography and diagnosis.

[0003] For example, the Chinese patent application, the patent document with publication number CN108042091A discloses a forceps lifting transmission mechanism and an endoscope, wherein the forceps lifting mechanism of the endoscope includes a forceps lifting device, a wire rope, a guide shaft, a slider body, a slideway, a connecting rod, a rotating drum and a lever, wherein the lever is connected to the rotating drum, and the lever can drive the rotating drum to rotate around the rotating shaft; one end of the connecting rod is connected to the rotating drum, and the other end is connected to the guide shaft; the guide shaft is connected to the slider body, and the slider body can slide in the slideway; one end of the wire rope is connected to the guide shaft, and the other end is connected to the forceps lifting device. During operation, the lever is rotated, the lever drives the rotating drum to rotate, and then the rotating drum drives the connecting rod to move, the connecting rod pulls the slider body to slide along the slideway, and at the same time the slider body pulls the guide shaft to drive the wire rope to move, and the wire rope rotates the forceps lifting device. The lever rotates in the opposite direction during the process of lifting and lowering the forceps lifting device.

[0004] During endoscopic surgery, the treatment tool is accurately aimed at the target location such as the lesion in the body within the observation field of the endoscope. Therefore, the lifting position of the forceps lifter is required to be sufficiently accurate. However, with the frequent lifting, clamping and lowering of the forceps lifter, the wire rope is frequently subjected to tension and pressure, causing the wire rope to stretch and lengthen; due to the increase in years of use and the aging of tools such as the wire rope, the wire rope will gradually become longer. The result of the wire rope stretching and lengthening is that the angle at which the lever drives the rotating drum to rotate cannot be actually transmitted to the forceps lifter, resulting in errors in the lifting position and lifting angle of the forceps lifter, which is not accurate enough.

[0005] In the prior art, in order to solve the above problems, the first step is to release the soldering connection between the wire rope and the guide shaft, the second step is to shorten the wire rope to the length required for work, the third step is to re-weld the wire rope and the guide shaft, and the fourth step is to perform hand feel adjustment on the re-welded and assembled lifting clamp mechanism. If the hand feel is not good, it is necessary to repeat the first to third steps until the requirements are met.

[0006] In the prior art, the length adjustment process of the wire rope of the lifting clamp mechanism is complicated and time-consuming, resulting in low efficiency in adjusting the length of the wire rope. Summary of the invention

[0007] In view of this, the present invention provides a lifting mechanism of the forceps with adjustable wire rope to solve the problem that the lifting position and lifting angle of the forceps lifting device have errors and are not accurate enough. The present invention also provides an endoscope.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A lifting clamp mechanism of an adjustable wire rope, comprising:

[0010] Lifting forceps;

[0011] A steel wire rope, a first end of which is connected to the clamp lifting device;

[0012] A guide shaft, the guide shaft being connected to the other end of the wire rope, and the guide shaft being provided with one or more first adjustment grooves;

[0013] A slider body is provided with a sliding hole for the guide shaft to slide along the length direction of the wire rope, and one or more second adjustment holes are provided on the slider body. The first adjustment groove and the second adjustment hole are locked by fasteners to achieve adjustable length of the wire rope.

[0014] Preferably, a plurality of the second adjustment holes are opened along the length direction of the steel wire rope, and adjacent second adjustment holes have equal lengths.

[0015] Preferably, a plurality of the first adjustment grooves are opened along the length direction of the guide shaft, and adjacent first adjustment grooves have equal lengths.

[0016] Preferably, the number of the first adjustment slots is N, and the number of the second adjustment holes is 2, so that the length of the steel wire rope can be adjusted to N+1 or 2N types, and the adjustment length of the steel wire rope is equal each time, where N≥2, and N is a positive integer.

[0017] Preferably, the number of the first adjustment grooves is N, and the number of the second adjustment holes is M, so that the length of the steel wire rope can be adjusted to M+N-1 or M×N types, and the adjustment length of the steel wire rope is equal each time, wherein "×" is a multiplication sign, N≥2, M>2, and N and M are positive integers.

[0018] Preferably, the distance between two adjacent second adjustment holes is twice the distance between two first adjustment slots.

[0019] Preferably, the first adjustment groove may be in the form of a hole, a through hole or a blind hole.

[0020] Preferably, the fastener may be a screw, a bolt or a pin.

[0021] Preferably, the second adjustment hole may be a threaded hole or a pin hole.

[0022] The present solution also provides an endoscope, comprising a clamp lifting mechanism with an adjustable wire rope as described in any one of the above solutions.

[0023] It can be seen from the above technical scheme that the adjustable wire rope lifting mechanism provided by this scheme includes a lifting device, a wire rope, a guide shaft and a slider body. The guide shaft is connected to the other end of the wire rope, and one or more first adjustment slots are arranged on the guide shaft; the slider body is provided with a sliding hole for the guide shaft to slide along the length direction of the wire rope, and one or more second adjustment holes are arranged on the slider body. The first adjustment slot and the second adjustment hole are locked by fasteners to achieve adjustable wire rope length, so as to solve the error in the lifting position and lifting angle of the lifting device, improve the effective stroke of the lifting device, avoid empty return stroke and empty return error, and maintain the limit angle for clamping the surgical instrument. The lifting mechanism provided by this scheme adjusts the length of the wire rope through the first adjustment slot and the second adjustment hole at different positions. It does not need to unsolder the connection between the wire rope and the guide shaft, nor does it need to intercept the wire rope, which effectively shortens the length adjustment time of the wire rope of the lifting mechanism and improves the length adjustment efficiency of the wire rope.

[0024] The present solution also provides an endoscope, including a forceps lifting mechanism, which is the forceps lifting mechanism described in the above solution. Since the forceps lifting mechanism has the above technical effects, the endoscope having the forceps lifting mechanism also has the same technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 work.

[0026] Figure 1 A schematic structural diagram of a clamp lifting mechanism provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the structure when the guide shaft and the slider body provided by the embodiment of the present invention are not matched;

[0028] Figure 3 A schematic diagram of the structure of the second adjustment hole A of the slider body and the first adjustment groove b of the guide shaft provided in an embodiment of the present invention;

[0029] Figure 4A schematic diagram of the structure of the second adjustment hole A of the slider body and the first adjustment groove a of the guide shaft provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the structure of the second adjustment hole B of the slider body and the first adjustment groove b of the guide shaft provided in an embodiment of the present invention;

[0031] Figure 6 A schematic structural diagram of the cooperation between the second adjustment hole B of the slider body and the first adjustment groove a of the guide shaft provided in an embodiment of the present invention.

[0032] 1. Lifting clamp, 2. Wire rope, 3. Guide shaft, 4. Slider body, 5. First adjusting groove, 6. Second adjusting hole. DETAILED DESCRIPTION

[0033] In the prior art, the endoscope and the forceps lifting mechanism are frequently lifted, clamped and lowered, and the wire rope is frequently subjected to tension and pressure, causing the wire rope to stretch and lengthen. Due to the increase in years of use and the aging of instruments such as the wire rope, the effective stroke of the forceps lifting device is reduced and the idle stroke is increased. During the operation, the surgical instrument cannot be lowered to return to the starting angle, nor can it be lifted to the extreme angle for clamping the surgical instrument.

[0034] The invention discloses an endoscope and a forceps lifting mechanism with an adjustable steel wire rope, which can increase the effective stroke of the forceps lifting device, avoid empty return stroke and empty return error, and maintain the limit angle for clamping surgical instruments.

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] An embodiment of the present invention provides an adjustable wire rope lifting clamp mechanism, comprising a lifting clamp device 1, a wire rope 2, a guide shaft 3 and a slider body 4.

[0037] like Figure 1As shown, the first end of the wire rope 2 is connected to the lifting clamp 1, and the second end of the wire rope 2 is connected to the guide shaft 3; a sliding hole is provided on the slider body 4 in a direction parallel to the axial direction of the wire rope, and the guide shaft 3 is located in the sliding hole and can move along the length direction of the wire rope 2 along the sliding hole. In this embodiment, a first adjustment slot 5 is provided on the guide shaft 3, and a second adjustment hole 6 is provided on the slider body 4. The number of the second adjustment holes 6 is one or more. When the number of the second adjustment holes 6 is multiple, the multiple second adjustment holes 6 are provided along the length direction of the wire rope, and the adjacent second adjustment holes 6 have equal lengths. The length adjustment of the wire rope 2 is achieved by cooperating with the first adjustment slot 5 and the second adjustment holes 6 at different positions.

[0038] After the first adjustment groove 5 is matched with the second adjustment hole 6 , the first adjustment groove 5 and the second adjustment hole 6 are locked by fasteners to prevent the connection position between the guide shaft 3 and the slider body 4 from loosening, thereby affecting the length adjustment effect of the wire rope 2 .

[0039] During adjustment, the first adjustment slot 5 is changed to cooperate with the second adjustment hole 6 at different positions, so that the guide shaft 3 can move along the length direction of the wire rope 2 on the slider body 4, thereby adjusting the length of the wire rope 2. After the length adjustment of the wire rope 2 is completed, the guide shaft 3 and the slider body 4 are fastened by fasteners. The lifting clamp mechanism provided by this solution adjusts the length of the wire rope by cooperating with the first adjustment slot 5 and the second adjustment hole 6 at different positions. It does not need to unsolder the connection between the wire rope 2 and the guide shaft 3, nor does it need to intercept the wire rope 2. It effectively shortens the length adjustment time of the wire rope 2 of the lifting clamp mechanism and improves the length adjustment efficiency of the wire rope 2.

[0040] In a further embodiment, the first adjustment slot 5 is not limited to a slot, and can also be a hole, a through hole, a blind hole, etc. The fastener can be a screw, a bolt, a pin, etc.

[0041] The adjustable wire rope lifting clamp mechanism provided by the present invention can meet the adjustment requirements of various lengths of the wire rope 2 and has strong versatility.

[0042] In another embodiment of the present invention, Figure 2As shown, in this embodiment, a sliding hole is provided on the slider body 4 in a direction parallel to the axial direction of the wire rope, and the guide shaft 3 is located in the sliding hole and can move along the sliding hole in the length direction of the wire rope 2. Two first adjustment slots 5 are provided on the guide shaft 3, and two second adjustment holes 6 are provided on the slider body 4. The first adjustment slots 5 are provided along the length direction of the guide shaft 3, and the second adjustment holes 6 are provided along the length direction of the slider body 4. The length adjustment of the wire rope 2 is achieved by cooperating with the first adjustment slots 5 and the second adjustment holes 6 at different positions. After the first adjustment slots 5 and the second adjustment holes 6 are matched, the first adjustment slots 5 and the second adjustment holes 6 are locked by fasteners to prevent the connection position between the guide shaft 3 and the slider body 4 from loosening, which affects the length adjustment effect of the wire rope 2.

[0043] like Figure 3-6 As shown, the guide shaft 3 is provided with two first adjustment slots, and the slider body 4 is provided with two second adjustment holes. For the convenience of the following description, the two first adjustment slots on the guide shaft 3 are named as the first adjustment slot a and the first adjustment slot b, and the two second adjustment holes on the slider body are named as the second adjustment hole A and the second adjustment hole B. It should be noted here that the above naming is only for Figure 3-6 The corresponding embodiment and the embodiments appearing in other parts of the text are not applicable to this naming, and are all uniformly named as the first adjustment groove 5 and the second adjustment hole 6.

[0044] When the second adjustment hole A and the first adjustment slot b cooperate, it is the cooperation position of the guide shaft and the slider body when the wire rope is not stretched and lengthened; when the second adjustment hole A and the second adjustment hole a cooperate, the length of the wire rope is adjusted by one unit; when the first adjustment slot B and the second adjustment hole b cooperate, the length of the wire rope is adjusted by another unit, and the length of the wire rope is actually adjusted by two units at this time; when the first adjustment slot B and the second adjustment hole a cooperate, the length of the wire rope is adjusted by another unit, and the length of the wire rope is actually adjusted by three units at this time. The specific unit length is selected by those skilled in the art according to the frequency of use of the lifting clamp mechanism and the characteristics of the wire rope, and is not specifically limited here.

[0045] In this embodiment, the distance between two adjacent second adjustment holes 6 is twice the distance between two first adjustment grooves 5. When the number of first adjustment grooves 5 is 2, the number of second adjustment holes 6 is 2. In the process of cooperation between the first adjustment grooves 5 and the second adjustment holes 6, the wire rope 2 can be adjusted to 4 lengths, and the adjustment length of the wire rope 2 is equal each time.

[0046] In a further implementation scheme, the distance between two adjacent second adjustment holes 6 is twice the distance between two first adjustment slots 5. When the number of the first adjustment slots 5 is 3, the number of the second adjustment holes 6 is 2, and the wire rope 2 can be adjusted to 6 lengths, and the adjustment length of the wire rope 2 is equal each time.

[0047] In a further embodiment, the distance between two adjacent second adjustment holes 6 is twice the distance between two first adjustment slots 5, the number of first adjustment slots 5 is N, the number of second adjustment holes 6 is 2, and the distance between two adjacent second adjustment holes 6 is twice the distance between two adjacent first adjustment slots 5. Specifically, the number N of the first adjustment slots 5 can be 2, 3, 4 or N, where N≥2, N is a positive integer, and 2N lengths of the steel wire rope 2 can be adjusted, and the adjustment length of the steel wire rope 2 is equal each time.

[0048] In a further implementation scheme, the distance between two adjacent second adjustment holes 6 is twice the distance between two first adjustment grooves 5, the number of first adjustment grooves 5 is N, and the number of second adjustment holes 6 is M. Specifically, the number N of first adjustment grooves 5 can be 2, 3, 4 or N, where N≥2, and N is a positive integer; specifically, the number M of second adjustment holes 6 can be 2, 3, 4 or M, where M>2, and M is a positive integer; M×N length adjustments of the wire rope 2 can be achieved, where × is a multiplication sign, and the adjustment length of the wire rope 2 is equal each time.

[0049] In a further embodiment, when the distance between two adjacent second adjustment holes 6 is equal to the distance between two first adjustment slots 5, the number of first adjustment slots 5 is N, the number of second adjustment holes 6 is 2, and the distance between two adjacent second adjustment holes 6 is twice the distance between two adjacent first adjustment slots 5. Specifically, the number N of the first adjustment slots 5 can be 2, 3, 4 or N, where N≥2, N is a positive integer, and N+1 length adjustments can be achieved for the steel wire rope 2, and the adjustment length of the steel wire rope 2 is equal each time.

[0050] In a further implementation scheme, when the distance between two adjacent second adjustment holes 6 is equal to the distance between two first adjustment slots 5, the number of first adjustment slots 5 is N, and the number of second adjustment holes 6 is M. Specifically, the number N of the first adjustment slots 5 can be 2, 3, 4 or N, where N≥2, and N is a positive integer; specifically, the number M of the second adjustment holes 6 can be 2, 3, 4 or M, where M>2, and M is a positive integer; the steel wire rope 2 can be adjusted to M+N-1 lengths, and the adjustment length of the steel wire rope 2 is equal each time.

[0051] In a further implementation scheme, the number of fasteners can be one or more, which is specifically set according to the matching number of the second adjustment hole 6 and the first adjustment groove 5 and the fastening requirements of the guide shaft 3 and the slider body 4, and is not specifically limited here.

[0052] In a further embodiment, the first adjustment slot 5 is not limited to a slot, and may also be a hole, a through hole, a blind hole, etc.; the fastener may be a screw, a bolt, a pin, etc.

[0053] This solution also provides an endoscope, including a forceps lifting mechanism, which is the forceps lifting mechanism described in any one of the above solutions. Since the forceps lifting mechanism has the above technical effects, the endoscope having the forceps lifting mechanism also has the same technical effects, which will not be described in detail here.

[0054] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting clamp mechanism for an adjustable wire rope, characterized in that: include: Lifting forceps; A steel wire rope, a first end of which is connected to the clamp lifting device; A guide shaft, the guide shaft being welded to the other end of the steel wire rope, and the guide shaft being provided with a first adjustment groove; A slider body, wherein the slider body is provided with a sliding hole for the guide shaft to slide along the length direction of the wire rope, and the slider body is provided with a second adjusting hole connected with the sliding hole, At least one of the first adjustment slots and the second adjustment holes is multiple in number, and the multiple second adjustment holes and / or the multiple first adjustment slots are opened along the length direction of the wire rope. Any of the first adjustment slots can be locked with any of the second adjustment holes by a fastener, and the length of the wire rope can be adjusted by cooperating with the second adjustment holes at different positions through the first adjustment slot and the second adjustment holes at different positions, or by cooperating with the first adjustment slot and the second adjustment holes at different positions.

2. The adjustable wire rope lifting clamp mechanism according to claim 1, characterized in that: There are multiple second adjustment holes, and adjacent second adjustment holes have equal lengths.

3. The adjustable wire rope lifting clamp mechanism according to claim 2, characterized in that: There are a plurality of the first adjustment grooves, and adjacent first adjustment grooves have equal lengths.

4. The adjustable wire rope lifting clamp mechanism according to claim 3, characterized in that: The number of the first adjustment slots is N, and the number of the second adjustment holes is 2, so that the length of the steel wire rope can be adjusted to N+1 or 2N types, and the adjustment length of the steel wire rope is equal each time, wherein N≥2, and N is a positive integer.

5. The adjustable wire rope lifting clamp mechanism according to claim 3, characterized in that: The number of the first adjustment grooves is N, and the number of the second adjustment holes is M. The length of the steel wire rope can be adjusted to M+N-1 or M×N types, and the adjustment length of the steel wire rope is equal each time, wherein "×" is a multiplication sign, N≥2, M>2, and N and M are positive integers.

6. The adjustable wire rope lifting clamp mechanism according to any one of claims 3 to 5, characterized in that: The distance between two adjacent second adjustment holes is twice the distance between two first adjustment slots.

7. The adjustable wire rope lifting clamp mechanism according to claim 1, characterized in that: The first adjustment groove may be in the form of a hole, a through hole or a blind hole.

8. The adjustable wire rope lifting clamp mechanism according to claim 1, characterized in that: The fastener may be a screw, a bolt or a pin.

9. The adjustable wire rope lifting clamp mechanism according to claim 1, characterized in that: The second adjustment hole may be a threaded hole or a pin hole.

10. An endoscope, characterized in that: A clamp lifting mechanism comprising an adjustable wire rope as described in any one of claims 1-9.

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