Ribbed link machining for making biopsy forceps

Abstract

The present invention relates to a ribbed link processing piece for manufacturing biopsy forceps, comprising a link and two extension ribs integrally connected to the link. The link has a first pivot joint and a second pivot joint arranged in a pivot direction, and the two extension ribs are integrally connected to the link from opposite sides of the pivot direction, and each of the two extension ribs has a positioning portion. By positioning the positioning portions of the extension ribs integrally connected to the two links on a jig, a control wire of a biopsy forceps can be accurately aligned and simultaneously pivoted at the first pivot joints of the two links, and two cups of the biopsy forceps can be accurately aligned and respectively pivoted at the second pivot joints of the two links.

Description

Technical Field

[0001] This invention relates to a ribbed connecting rod for manufacturing biopsy forceps, and more particularly to an invention in which two opposing extended ribs are connected to the connecting rod, and the control lines and forceps cups of the biopsy forceps are precisely aligned with the pivot joints of the two connecting rods by positioning the extended ribs. Background Technology

[0002] Endoscopy allows observation of whether internal organs are functioning normally. When it is necessary to obtain tissue samples for external physical examination, biopsy forceps are used to directly obtain the tissue to be examined.

[0003] The structure of a typical biopsy forceps generally consists of a control cable pivotally connected to two linkages, with each linkage pivotally connected to a forceps cup. The forceps cups are fixed to the forceps head frame. By pulling the control cable backward, the linkages can be pulled to close the two forceps cups and grasp the tissue to be examined.

[0004] The working channel of the endoscope is approximately 2.8mm. The size of the biopsy forceps, when the two forceps cups are closed, is generally between 2.2mm and 2.5mm in diameter, usually 2.4mm. Using an ultrasound endoscope, with the addition of ultrasound, provides clearer imaging, allowing for more precise identification of tiny lesions. When aspiration needles are used to retrieve the tissue, the inner diameter of the aspiration needle is approximately 0.85mm to 0.9mm. In this case, the diameter of the biopsy forceps when the two forceps cups are closed is only about 0.8mm.

[0005] In summary, biopsy forceps are small in size but complex in mechanism. For example, when the control line and forceps cup are to be precisely pivoted to the pivot part of the small connecting rod, the connecting rod is prone to displacement and is not easy to align during the assembly or welding process, which makes assembly difficult. Summary of the Invention

[0006] To make biopsy forceps easier to assemble and weld, the purpose of this invention is to provide a ribbed connecting rod machining component for manufacturing biopsy forceps.

[0007] This invention provides a ribbed connecting rod for manufacturing biopsy forceps, comprising:

[0008] A connecting rod having a first pivot portion and a second pivot portion arranged in a pivoting direction. Two extension ribs integrally formed on opposite sides of the connecting rod in the pivoting direction, each extension rib having a positioning portion.

[0009] By positioning the locating portions of the extended ribs on the two links on a fixture, a control line of a biopsy forceps can be aligned and simultaneously pivoted to the first pivot portion of the two links, and the two forceps cups of the biopsy forceps can be aligned and respectively pivoted to the second pivot portion of the two links.

[0010] Furthermore, the second extension rib extends in an extension direction perpendicular to the pivoting direction.

[0011] Furthermore, both the first and second pivot portions of the connecting rod are pivot holes. Even further, the connecting rod has a first surface and a second surface facing each other; one of the first and second pivot portions of the two connecting rods is a fisheye hole concave from the first surface to the second surface, and the other of the two connecting rods has a second pivot portion concave from the second surface to the first surface.

[0012] Furthermore, the positioning portion of the extended rib has an identification feature for identifying the connected connecting rod, and for identifying the first and second surfaces of the connecting rod. The identification feature is, for example, a cut edge on the positioning portion.

[0013] Furthermore, the positioning portion of the extended rib includes a positioning hole.

[0014] The following effects can be achieved based on the above technical features:

[0015] 1. The present invention positions the positioning part of the extended rib connected to the two connecting rods on the fixture, so that the connecting rods will not shift during subsequent assembly and welding. Therefore, the control line of the biopsy forceps can be easily aligned and pivotally connected to the first pivot part of the two connecting rods, and the two forceps cups of the biopsy forceps can be easily aligned and pivotally connected to the second pivot parts of the two connecting rods respectively.

[0016] 2. In the two-link assembly of the biopsy forceps, the first and second pivot parts of one link are both fisheye holes with the first surface facing the second surface concave, while the other link has a fisheye hole with the second surface facing the first surface concave at the second pivot part. Therefore, the positioning part of the extension rib has identification features to identify the type of the connected link and to identify the first and second surfaces of the link, so as to avoid using the wrong type of link or the wrong installation direction. Attached Figure Description

[0017] Figure 1 This is a perspective view of one of the ribbed connecting rods of the present invention.

[0018] Figure 2 This is a perspective view of one of the ribbed connecting rods of the present invention from another angle.

[0019] Figure 3 This is a perspective view of another ribbed connecting rod component of the present invention.

[0020] Figure 4 This is a perspective view of another ribbed connecting rod component of the present invention from a different angle.

[0021] Figure 5This is a three-dimensional view of the assembly and welding of two connecting rods of two ribbed connecting rod parts, which are pivotally connected to the control line by a first head pin, during the implementation of this invention.

[0022] Figure 6 for Figure 5 A sectional view.

[0023] Figure 7 for Figure 5 The top view.

[0024] Figure 8 for Figure 5 Side view.

[0025] Figure 9 This is a perspective view of the control line where two ribbed connecting rods are pivotally connected by a first head pin during the implementation of the present invention.

[0026] Figure 10 The present invention is illustrated in a three-dimensional view showing the two connecting rods of two ribbed connecting rod machining parts pivotally connected to the control line by a first lead pin, and the excess first lead pin being cut off and ground flat.

[0027] Figure 11 This is a perspective view showing the control line pivotally connected to two ribbed connecting rods passing through a flat wire spring from the front end of the pliers head frame during the implementation of this invention.

[0028] Figure 12 In the implementation of this invention, after the control line pivotally connected to the two ribbed connecting rods is inserted into the flat wire spring and positioned, the two ribbed connecting rods are cut off in a three-dimensional view.

[0029] Figure 13 The three-dimensional view of the two clamp cups connected to the clamp head frame when the fixing pin passes through the two clamp cups and the clamp head frame during the implementation of the present invention.

[0030] Figure 14 This is a three-dimensional view of the device after the fixing pin passes through the two clamp cups and the clamp head frame, and the excess fixing pin is cut off during the implementation of this invention.

[0031] Figure 15 The three-dimensional view shows the welding of fixing pins during the implementation of this invention, so that the two clamp cups are pivotally connected to the clamp head frame.

[0032] Figure 16 This is an exploded perspective view showing the second lead pin passing through the connecting rod and the clamp cup during the implementation of this invention.

[0033] Figure 17 This is a three-dimensional assembly diagram showing the second lead pin passing through the connecting rod and the clamp cup during the implementation of this invention.

[0034] Figure 18 This is a perspective view of the clamp cup pivotally connected to the connecting rod when the second head pin is welded during the implementation of this invention.

[0035] Figure 19 The three-dimensional view of the clamp cup after it is pivotally connected to the connecting rod, with the excess second head pin cut off and ground flat, is shown in the present invention.

[0036] Figure 20 This is a three-dimensional view of the two clamp cups pivotally connected to the two connecting rods during the implementation of the present invention.

[0037] Figure 21 In the implementation of this invention, the two forceps cups are pivotally connected to the two connecting rods, and the first extension ribs of the two ribbed connecting rods are cut off to complete the three-dimensional appearance of the assembled biopsy forceps.

[0038] Explanation of reference numerals in the attached drawings: 1A - Ribbed connecting rod part one; 11A - Connecting rod one; 111A - First pivot part one; 112A - Second pivot part one; 113A - First surface one; 114A - Second surface one; 12A - First extension rib one; 121A - First positioning part one; 122A - First positioning hole one; 123A - First cut edge one; 13A - Second extension rib one; 131A - Second positioning part one; 132A - Second positioning hole one; 1B - Ribbed connecting rod part two; 11B - Connecting rod two; 111B - First pivot part two; 112B - Second pivot part two; 113 B - First side two; 114B - Second side two; 12B - First extension rib two; 121B - First positioning part two; 122B - First positioning hole two; 123B - Second cutting edge two; 13B - Second extension rib two; 131B - Second positioning part two; 132B - Second positioning hole two; 2 - Control line; 21 - Head; 3 - First head pin; 4 - Fixing post; 5 - Fixing pressure block; 6 - Pliers head frame; 7 - Flat wire spring; 8 - Pliers cup; 81 - Pliers part; 9 - Fixing pin; 10 - Sharp object; 20 - Second head pin; 30 - Platform; D1 - Pivot direction; D2 - Extension direction. Detailed Implementation

[0039] Based on the above technical features, the main functions of the ribbed connecting rod machining part of the present invention for making biopsy forceps will be clearly demonstrated in the following embodiments.

[0040] Please refer to Figure 1 and Figure 2As shown, an embodiment of the present invention includes a ribbed connecting rod component 1A, which has a connecting rod 11A. The connecting rod 11A has a first pivot portion 111A and a second pivot portion 112A arranged in a pivoting direction D1. The connecting rod 11A also has a first surface 113A and a second surface 114A facing each other. The first pivot portion 111A and the second pivot portion 112A of the connecting rod 11A are both pivot holes. In this embodiment, the first pivot portion 111A and the second pivot portion 112A are both fisheye holes that are concave from the first surface 113A toward the second surface 114A. The ribbed connecting rod component 1A has a first extending rib 12A and a second extending rib 13A integrally formed and connected to the connecting rod 11A on opposite sides in the pivot direction D1. In this embodiment, the first extending rib 12A and the second extending rib 13A extend in an extending direction D2, which is perpendicular to the pivot direction D1. The first extending rib 12A has a first positioning part 121A and a first positioning hole 122A. The second extending rib 13A has a second positioning part 131A and a second positioning hole 132A. The first positioning part 121A also has a first identification feature. In this embodiment, the first identification feature is a first cut edge 123A on the first positioning part 121A.

[0041] Please refer to Figure 3 and Figure 4 As shown, this embodiment also includes a ribbed connecting rod processing part 2 1B. The ribbed connecting rod processing part 2 1B has a connecting rod 2 11B. The connecting rod 2 11B has a first pivot portion 2 111B and a second pivot portion 2 112B arranged in the pivot direction D1. The connecting rod 2 11B also has a first surface 2 113B and a second surface 2 114B facing each other. The first pivot portion 2 111B and the second pivot portion 2 112B of the connecting rod 2 11B are both pivot holes. In this embodiment, the second pivot portion 2 112B is a fisheye hole that is concave from the second surface 2 114B toward the first surface 2 113B. The ribbed connecting rod part 1B has a first extending rib 12B and a second extending rib 13B integrally formed and connected to the connecting rod 11B on opposite sides in the pivot direction D1. In this embodiment, the first extending rib 12B and the second extending rib 13B extend in the extension direction D2. The first extending rib 12B has a first positioning part 121B and a first positioning hole 122B. The second extending rib 13B has a second positioning part 131B and a second positioning hole 132B. The first positioning part 121B also has a second identification feature. In this embodiment, the second identification feature is that there are two second cut edges 123B on the diagonal of the first positioning part 121B.

[0042] Please refer to Figure 5 and Figure 6 As shown, the control line 2 for assembling biopsy forceps is made by passing a first headed pin 3 through the first pivot portion 111A from the first surface 113A of the first connecting rod 11A, and temporarily fixing it to the fixing post 4 by inserting the first positioning hole 122A on the first positioning portion 121A of the first extended rib 12A and the second positioning hole 132A on the second positioning portion 131A of the second extended rib 13A, respectively. Then, the control line 2 is... The head 21 is fitted onto the first head pin 3. Then, the first pivot portion 111B of the connecting rod 11B is aligned with the first head pin 3, so that the first head pin 3 passes through the first pivot portion 111B from the first surface 113B of the connecting rod 11B. The first positioning hole 122B on the first positioning portion 121B of the first extending rib 12B and the second positioning hole 132B on the second positioning portion 131B of the second extending rib 13B are respectively fitted into these holes and temporarily fixed to the fixing post 4. Please refer to [link / reference]. Figure 7 and Figure 8 Then, the fixing block 5 presses against the first connecting rod 11A, the head 21 of the control line 2 and the second connecting rod 11B, so that the first connecting rod 11A, the head 21 of the control line 2 and the second connecting rod 11B can fit together. Then, the first head pin 3 is welded to the periphery of the first pivot part 111B of the second connecting rod 11B by laser full-circumference dot welding, thereby assembling and pivoting the control line 2 between the first connecting rod 11A and the second connecting rod 11B.

[0043] Since the first pivot portion 111A and the second pivot portion 112A of the connecting rod 11A are both fisheye holes that are concave from the first surface 113A to the second surface 114A, and the second pivot portion 11B of the connecting rod 11B is a fisheye hole that is concave from the second surface 114B to the first surface 113B, the assembly of the connecting rod 11A and the connecting rod 11B is directional. The first cut edge 123A of the first positioning portion 121A of the first extension rib 12A and the second cut edge 123B of the first positioning portion 121B of the first extension rib 12B can be used to identify the type of connecting rod and to identify the first surface 113A / first surface 113B and the second surface 114A / second surface 114B of the connecting rod 11A / connecting rod 11B, so as to avoid using the wrong type of connecting rod or the wrong installation direction.

[0044] Please refer to Figure 9 and Figure 10As shown, after the welding of the first lead pin 3 is completed so that the control line 2 is assembled and pivotally connected between the first connecting rod 11A and the second connecting rod 11B, the excess part of the first lead pin 3 exposed on the second connecting rod 11B is cut off and ground flat.

[0045] Please refer to Figure 11 and Figure 12 As shown, after assembling and welding the forceps head frame 6 of the biopsy forceps to the flat wire spring 7, the control line 2, which is pivotally connected to the connecting rod 11A of the ribbed connecting rod component 1A and the connecting rod 11B of the ribbed connecting rod component 2B, is passed through the front end of the forceps head frame 6 into the flat wire spring 7. After the control line 2 is inserted into the flat wire spring 7 and positioned, the second extension rib 13A of the ribbed connecting rod component 1A and the second extension rib 13B of the ribbed connecting rod component 2B are cut off, while the first extension rib 12A of the ribbed connecting rod component 1A and the first extension rib 12B of the ribbed connecting rod component 2B are retained.

[0046] Please refer to Figure 13 and Figure 14 As shown, the two forceps cups 8 of the biopsy forceps are assembled onto the forceps head frame 6. Specifically, the two forceps cups 8 are inserted into the forceps head frame 6, while the forceps portion 81 of the two forceps cups 8 protrudes outside the forceps head frame 6. Then, a fixing pin 9 passes through the two forceps cups 8 and the forceps head frame 6 to connect the two forceps cups 8 to the forceps head frame 6. Finally, the excess portion of the fixing pin 9 protruding outside the forceps head frame 6 is cut off. Please refer to [reference needed]. Figure 15 The first positioning hole 122A on the first positioning part 121A of the first extension rib 12A and the first positioning hole 122B on the first positioning part 121B of the first extension rib 12B are respectively inserted and temporarily fixed on the fixing post 4. Then, a sharp object 10 is used to press against the pliers head frame 6 so that the two pliers cups 8 and the pliers head frame 6 can fit together. Then, the fixing pin 9 is welded and fixed on the pliers head frame 6 by laser full-circumference dot welding so that the two pliers cups 8 can be pivotally connected to the pliers head frame 6.

[0047] Please refer to Figure 16 and Figure 17 As shown, the two forceps cups 8 of the biopsy forceps are respectively assembled and pivotally connected to the second pivot portion 112A of the connecting rod 11A and the second pivot portion 112B of the connecting rod 11B. The diagram illustrates that one of the forceps cups 8 is first assembled and pivotally connected to the second pivot portion 112B of the connecting rod 11B. First, the side with the larger diameter hole in the second pivot portion 112B of the connecting rod 11B is positioned upwards. The first positioning hole 122A on the first positioning portion 121A of the first extension rib 12A and the first positioning hole 122B on the first positioning portion 121B of the first extension rib 12B are respectively inserted and temporarily fixed to the fixing post 4. Then, a second pin 20 is passed through the connecting rod 11B and one of the forceps cups 8. Please refer to [further details omitted]. Figure 18 and Figure 19 As shown, the assembled mechanism is flipped so that the side with the larger diameter of the second pivot portion 112B of the connecting rod 11B faces downwards, and the second lead pin 20 is supported against a platform 30. This prevents the second lead pin 20 from falling off from the side with the larger diameter of the second pivot portion 112B. At the same time, the first positioning hole 122A on the first positioning portion 121A of the first extension rib 12A and the first positioning hole 122B on the first positioning portion 121B of the first extension rib 12B are respectively... The pin is inserted and temporarily fixed to the fixing post 4. Then, a sharp object 10 is used to press against one of the clamp cups 8 so that one of the clamp cups 8 and the second pivot part 112B of the connecting rod 2 11B can fit together. Then, the second head pin 20 is welded and fixed to one of the clamp cups 8 by laser full-circumference dot welding so that one of the clamp cups 8 can pivotally connect to the second pivot part 112B of the connecting rod 2 11B. Then, the excess part of the second head pin 20 exposed on the connecting rod 2 11B is cut off and ground flat.

[0048] Please refer to Figure 20 and Figure 21 As shown, the other clamp cup 8 is pivotally connected to the connecting rod 11A by another second head pin 20 in the same manner, so that the two clamp cups 8 can be opened or closed by the connecting rod 11A and the connecting rod 21B. Then, the first extension rib 12A of the ribbed connecting rod 1A and the first extension rib 12B of the ribbed connecting rod 21B are cut off, thereby completing the assembly of the biopsy forceps.

[0049] Based on the above description of the embodiments, it should be fully understood that the operation, use and effects of the present invention are as follows. The above embodiments are only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. That is, any simple equivalent changes and modifications made based on the content of the present invention specification are within the scope of the present invention.

Claims

1. A ribbed connecting rod machining part for manufacturing biopsy forceps, characterized in that, include: A link having a first pivot and a second pivot arranged in a pivoting direction; Two extension ribs are integrally formed on opposite sides of the connecting rod in the pivoting direction, and each of the two extension ribs has a positioning part; By positioning the positioning portion of the extended ribs on the two links on a fixture, a control line of a biopsy forceps can be aligned and simultaneously pivoted to the first pivot portion of the two links, and the two forceps cups of the biopsy forceps can be aligned and respectively pivoted to the second pivot portion of the two links. Among them, the two connecting rods are connecting rod one and connecting rod two, and they belong to two ribbed connecting rod parts: ribbed connecting rod part one and ribbed connecting rod part two; The ribbed connecting rod component has a first pivot portion and a second pivot portion arranged in a pivot direction, and a first extension rib and a second extension rib integrally formed on opposite sides in the pivot direction and connected to the connecting rod. The first extension rib and the second extension rib extend in the extension direction. The first extension rib has a first positioning portion and a first positioning hole. The second extension rib has a second positioning portion and a second positioning hole. The ribbed connecting rod part 2 has a first pivot part 2 and a second pivot part 2 arranged in a pivot direction, and a first extension rib 2 and a second extension rib 2 integrally formed and connected to the connecting rod 2 on opposite sides in the pivot direction. The first extension rib 2 and the second extension rib 2 extend in the extension direction. The first extension rib 2 has a first positioning part 2 and a first positioning hole 2. The second extension rib 2 has a second positioning part 2 and a second positioning hole 2. When the first and second ribbed connecting rods are assembled onto the control line of the biopsy forceps, the first positioning hole, the second positioning hole, the first positioning hole, and the second positioning hole are respectively fitted into and temporarily fixed to the fixing post on the fixture; the second extension rib and the second extension rib are configured to be cut off after the control line passes through the forceps head frame of the biopsy forceps and is assembled and pivotally connected between the first and second connecting rods. When the two forceps of the biopsy forceps are assembled and pivotally connected to the second pivot part one and the second pivot part two respectively, the first positioning hole one and the first positioning hole two are respectively inserted and temporarily fixed on the fixing post of the fixture.

2. The ribbed connecting rod machining part for manufacturing biopsy forceps as described in claim 1, characterized in that, The second extension rib extends in an extension direction perpendicular to the pivoting direction.

3. The ribbed connecting rod machining part for manufacturing biopsy forceps as described in claim 1, characterized in that, Both the first and second pivot parts of the connecting rod are pivot holes.

4. The ribbed connecting rod machining part for manufacturing biopsy forceps as described in claim 3, characterized in that, The connecting rod has a first surface and a second surface facing each other. The first pivot portion and the second pivot portion of one of the two connecting rods are both fish-eye holes that are concave from the first surface to the second surface. The second pivot portion of the other of the two connecting rods is a fish-eye hole that is concave from the second surface to the first surface.

5. The ribbed connecting rod machining part for manufacturing biopsy forceps as described in claim 4, characterized in that, The positioning portion of the extended rib has an identification feature for identifying the connected link, as well as the first and second surfaces of the link.

6. The ribbed connecting rod machining part for manufacturing biopsy forceps as described in claim 5, characterized in that, The identification feature is the cut edge on the positioning part.

7. The ribbed connecting rod machining part for manufacturing biopsy forceps as described in claim 1, characterized in that, The positioning portion of the extended rib includes a positioning hole.

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