Movable joint structure of multi-joint endoscope manual control instrument
By designing a joint structure of a multi -joint endoscopic manual equipment, the method of connecting the rope connecting and limitations of the convex slot is used to solve the blade head deviation and swing caused by the existing joint length of the existing technology. The problem of slippery has achieved smooth swing and higher surgical flexibility.
Patent Information
- Application Number
- CN202420520420.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The joint length of existing multi-articular endoscopic manual devices is too large, resulting in a deviation of the cutter head when swinging at 90°, making it difficult to position in the abdominal cavity, and the swing is not smooth, which may damage the tissue.
Design a multi -joint structure connected through the rope, including the knife head and joint, fixed joints, and nine activity joints. Connect to reduce joint thickness and improve the smoothness of swing.
A more smooth and efforted joint swing, the maximum swing angle expands to 140 °, reducing the damage to the tissue in the abdominal cavity, and improving the flexibility and safety of surgery.
Smart Images
Figure CN222398245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical instruments, in particular to a movable joint structure of a multi-joint endoscope hand-controlled instrument. Background Art
[0002] The joints of multi-joint endoscopic hand-controlled instruments on the market are mostly about 20mm in length. When swinging to 90°, the blade will deviate 50mm from the field of view and may not be found in the abdominal cavity. Some instruments have three or five joints, which can only swing to 90° and are not smooth arcs, which may cause damage to the patient's abdominal tissue. Utility Model Content
[0003] In order to solve the technical problems existing in the prior art, the utility model provides a movable joint structure of a multi-joint endoscopic hand-controlled instrument. Through the design of nine thin joints, the instrument can be swung to 90° more smoothly and labor-saving, and can be swung to a maximum of 140°, so that surgery can be performed in a wider range.
[0004] To achieve the above purpose, the technical solution of the utility model is as follows:
[0005] A movable joint structure of a multi-joint endoscopic hand-controlled instrument includes multiple joints connected in series by ropes, wherein the joints include a cutter head joint, a fixed joint and nine movable joints, wherein the first and last movable joints of the nine movable joints are respectively connected to the cutter head joint and the fixed joint, and the mutual swing angle of the movable joints is 28°.
[0006] As a preferred technical solution, there are four ropes, each joint is provided with perforations around it, the four perforations in a joint correspond to the four ropes respectively, one end of the rope is fixed on the blade joint, and the other end passes through the fixed joint.
[0007] As a preferred technical solution, the joints are connected via limiting bosses and grooves, and the limiting boss on each joint is inserted into the groove of the previous joint.
[0008] As a preferred technical solution, the limiting boss passes through the corresponding groove.
[0009] As a preferred technical solution, the shape of the movable joint is thick in the middle and thin on both sides.
[0010] As a preferred technical solution, the maximum angle of the overall swing of the joint is 140°.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] (1) In the movable joint structure of a multi-joint endoscopic hand-controlled instrument of the utility model, the limiting boss does not serve as a fulcrum, and the corresponding groove can penetrate, thereby reducing the thickness of the joint. The thickness of one movable joint is 1.1 mm, and the thinnest part is only 0.6 mm, so the length of the nine movable joints is only 9.9 mm.
[0013] (2) When the nine movable joints swing to 90°, the swing distance is 12.75 mm, and the arc of the outer circle of the joint is smoother, which will not damage the tissues in the abdominal cavity.
[0014] (3) The mutual swing angle of the movable joints is 28°, so the overall maximum swing angle is 140°, which can achieve more usage positions. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the straight state of the movable joint structure of the multi-joint endoscope hand-controlled instrument of the utility model;
[0016] Figure 2 It is a schematic diagram of a state in which the movable joint structure of the multi-joint endoscope hand-controlled instrument of the utility model swings to 90 degrees;
[0017] Figure 3 It is a schematic diagram of a state in which the movable joint structure of the multi-joint endoscope hand-controlled instrument of the utility model swings to 140 degrees.
[0018] In the figure: 1. Cutter head joint; 2. Movable joint; 3. Fixed joint; 4. Limiting boss. DETAILED DESCRIPTION
[0019] The technical solution of the utility model is further described below in conjunction with specific implementation methods:
[0020] like Figure 1 As shown, a movable joint structure of a multi-joint endoscope hand-controlled instrument includes multiple joints connected in series by ropes, wherein the joints include a cutter head joint 1, a fixed joint 3 and nine movable joints 2, wherein the first and last movable joints 2 of the nine movable joints 2 are respectively connected to the cutter head joint 1 and the fixed joint 3, and the mutual swing angle of the movable joints 2 is 28°. Figure 3 As shown, the maximum angle of the overall swing is 140°, and more usage positions can be achieved during surgery.
[0021] There are four ropes, and each joint is provided with holes around it. The four holes in a joint correspond to four ropes respectively. One end of the rope is fixed on the blade joint 1, and the other end passes through the fixed joint 3 and is connected to a universal joint swing and locking mechanism. The four ropes are tightened through the universal joint swing and locking mechanism to adjust the swing direction of the joint. At the same time, the ropes can prevent the movable joint 2 from falling out in the front and back directions.
[0022] The joints are connected by limiting bosses 4 and slots, and the limiting bosses 4 on each joint are inserted into the slot of the previous joint. The fixed joint 3 has only limiting bosses 4, which are inserted into the slot of the movable joint 2 at the tail. The cutter head joint 1 has only slots, and the limiting bosses 4 of the first movable joint 2 are inserted into the slot of the cutter head joint 1. The limiting bosses 4 and slots are set to prevent the movable joint 2 from falling out from the up, down, left, and right directions.
[0023] The limiting boss 4 does not serve as a fulcrum and can pass through the corresponding slot, thereby reducing the thickness of the joint.
[0024] The shape of the movable joint 2 is thick in the middle and thin on both sides. The thickness of one section is 1.1mm, and the thinnest part is only 0.6mm, so the overall length of the nine movable joints 2 is only 9.9mm.
[0025] like Figure 2 As shown, when the nine-section movable joint 2 swings to 90°, the swing direction distance is 12.75 mm, and the arc of the outer circle of the movable joint 2 is smoother and will not damage the tissue in the abdominal cavity.
[0026] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.
Claims
1. A movable joint structure of a multi-joint endoscope hand-controlled instrument, characterized in that: It includes multiple joints connected by ropes, wherein the joints include a cutter head joint, a fixed joint and nine movable joints. The first and last movable joints of the nine movable joints are respectively connected to the cutter head joint and the fixed joint. The joints are connected by limiting bosses and grooves. The limiting boss on each joint is inserted into the groove of the previous joint. The limiting boss passes through the corresponding groove. The mutual swing angle of the movable joints is 28°.
2. The movable joint structure of a multi-joint endoscope hand-controlled instrument according to claim 1, characterized in that: There are four ropes, and each joint is provided with perforations around it. The four perforations in one joint correspond to the four ropes respectively. One end of the rope is fixed on the blade joint, and the other end passes through the fixed joint.
3. The movable joint structure of a multi-joint endoscope hand-controlled instrument according to claim 1, characterized in that: The shape of the movable joint is thick in the middle and thin on both sides.
4. The movable joint structure of a multi-joint endoscope hand-controlled instrument according to claim 1, characterized in that: The maximum angle of the overall swing of the joint is 140°.