Source: http://www.google.com/patents/US20040147943?ie=ISO-8859-1&dq=KOI-18
Timestamp: 2014-09-22 08:15:06
Document Index: 206547577

Matched Legal Cases: ['art 42', 'art 44', 'art 43', 'art 42', 'art 44', 'art 42', 'art 42', 'art 44', 'art 44', 'art 44']

Patent US20040147943 - Clip device for holding a living tissue - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA clip device for holding a living tissue, wherein a clip operating force adjustment portion is provided with a hold member placed in a state of relatively increasing a ratio of a clip closing force to close clip hands to a clip opening force to expand the clip hands of a clip when operating the cli...http://www.google.com/patents/US20040147943?utm_source=gb-gplus-sharePatent US20040147943 - Clip device for holding a living tissueAdvanced Patent SearchPublication numberUS20040147943 A1Publication typeApplicationApplication numberUS 10/760,058Publication dateJul 29, 2004Filing dateJan 16, 2004Priority dateJan 17, 2003Also published asDE602004023551D1, EP1438923A1, EP1438923B1, US7108699Publication number10760058, 760058, US 2004/0147943 A1, US 2004/147943 A1, US 20040147943 A1, US 20040147943A1, US 2004147943 A1, US 2004147943A1, US-A1-20040147943, US-A1-2004147943, US2004/0147943A1, US2004/147943A1, US20040147943 A1, US20040147943A1, US2004147943 A1, US2004147943A1InventorsTsukasa KobayashiOriginal AssigneeOlympus CorporationExport CitationBiBTeX, EndNote, RefManReferenced by (2), Classifications (12), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetClip device for holding a living tissueUS 20040147943 A1Abstract A clip device for holding a living tissue, wherein a clip operating force adjustment portion is provided with a hold member placed in a state of relatively increasing a ratio of a clip closing force to close clip hands to a clip opening force to expand the clip hands of a clip when operating the clip. Images(7) Claims(11)
DETAILED DESCRIPTION OF THE INVENTION [0058] Hereinafter, a first embodiment of the present invention will be explained with reference to FIG. 1 and FIG. 9 to FIG. 11. FIG. 1 shows a clip unit 21 of a living tissue clip device of this embodiment of the present invention. Most of the configuration of the clip unit 21 of this embodiment is the same as those of a clip unit 1 of FIGS. 8A-8D. Thus, in FIG. 1, the same reference numerals are given to the same parts as those in FIGS. 8A-8D, and detailed description will be omitted and only the different parts will be explained. [0059] Namely, the clip unit 21 of this embodiment is provided with an operating force adjustment portion 22. In the clip operating force adjustment portion 22, the hold member 6 is placed in the rear end side (between L2 and L3) in the holder tube 5, as shown in FIG. 1. Thus, the resisting effect by the hold member 6 is reduced in the clip opening operation area to expand the clip hands 3c of the clip 3 (in the range between the points 0 and B in FIG. 11) when operating a clip. Further, the resisting effect by the hold member 6 is increased to larger than in the clip opening operation area, in the clip closing operation area to close the clip hands 3 c (in the range between the points B and C in FIG. 11). [0060] Further, the clip unit 21 of this embodiment has a tapered surface 5 a in the inner circumference surface of the front end of the holder tube 5 whose inside diameter increases toward the front end. In the state the clip unit 21 is not closed, the base end part of the base ring 3 a of the clip 3 is held in being contacted to the tapered surface 5 a. Further, an inwardly curved claw 3 d is formed at the front end of each clip hands 3 c of the clip 3. [0061] Now, explanation will be given on the function of this embodiment configured as described above. When closing the clip unit 1 for clipping, pull the slider unit 15 in the control unit 9 of the clip control unit 2, as explained above. Then, the connection member 4 is pulled toward the side close to hand, and the base ring 3 a is gradually pressed to fit into the holder tube 5, as shown in FIG. 9A. In this time, the base ring 3 a pressed and fit into the holder tube 5 is gradually crushed and deformed to have a smaller size (the diameter is reduced). At the same time, the clip hand 3 c is deformed in the expanding direction, interlocking with the deformation of the base ring 3 a. In this case, since the hold member 6 is not placed at the front end of the holder tube 5 (between L1 and L2 in FIG. 1) in this embodiment, the resisting effect by the hold member 6 is not applied to the clip opening force for clipping to expand the clip hands 3 c, when expanding the clip hands 3 c by gradually pressing the base ring 3 a to fit into the holder tube 5. As a result, the clip hands 3 c can be expanded to the substantially maximum expanded position by a relatively small force. [0062] Further, in this embodiment, the hold member 6 is placed at the rear end of the holder tube 5 (between L2 and L3 in FIG. 1). Thus, the resisting effect by the hold member 6 can be applied to the clip closing force when closing the clip by closing the hold member 3 c (from the time the clip hands 3 c of the opened clip 3 contact the holder tube 5 (in FIG. 9B), to the time the front ends of the clip hands 3 c of the clip 3 contact each other and the clip hands 3 c are completely closed (in FIG. 9C)). As a result, the ratio of the clip closing force to close the clip hands 3 c to the clip opening force to expand the clip hands 3 c can be relatively increased. [0063] The device configured as explained above provides the following effects. That is, in this embodiment, since the hold member 6 is placed in the rear end side in the holder tube 5, it is possible to decrease the resisting effect by the hold member 6 in the clip opening operation area to expand the clip hands 3 c when operating a clip, and increase the resisting effect by the hold member 6 in the clip closing operation area to close the clip hands 3 c to larger than that in the clip opening operation area. Thus, the difference of the operating force between the clip opening operation area and clip closing operation area can be increased while pressing the base ring to fit into the holder tube by pulling the connection member 4 toward the side close to hand. As a result, the time to switch from the clip opening operation area to the clip closing operation area can be confirmed by sense. Thus, it is easy to certainly stop the clip hands 3 c by the operator's operation sense in the state expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip. Therefore, it is prevented that the connection member 4 is pulled toward the side close to hand exceeding the position where the clip hands 3 c are expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand. [0064]FIG. 2 shows a second embodiment of the present invention. In the clip unit 31 of this embodiment, the front end position L2 of the hold member 6 placed in the rear end side in the holder tube 5 is extended forward. The front end position L2 of the hold member 6 is set at the position where the base ring 3 a of the clip 3 contacts the hold member in the state the base ring 3 a is pressed to fit into the holder tube 5 and the clip hands 3 c are expanded to the maximum expanded position. [0065] Now, the function of the above configuration will be explained. In the clip unit 31 of this embodiment, the base ring 3 a does not contact the hold member 6 until the clip hands 3 c reach the maximum expanded position in the clip opening operation area to expand the clip hands 3 c when pulling the connection member 4 toward the side close to hand when operating a clip. Thus, it is possible not to apply the resisting effect by the hold member 6 to the resisting force to the operation of pulling the connection member 4 toward the side close to hand. [0066] After the maximum expanded position, by contacting the base ring 3 a to the hold member 6, it is possible to apply the resisting effect by the hold member 6 to the resisting force to the operation of pulling the connection member 4 toward the side close to hand. [0067] In the above configuration, it is possible to decrease the resisting effect before the maximum expanded position in the clip opening operation area to expand the clip hands 3 c when operating a clip, and increase the resisting effect after the maximum expanded position including the clip closing operation area to close the clip hands 3 c. Thus, in this embodiment as in the first embodiment, it is possible to certainly stop the clip hands 3 c at the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip, and increase ease of operating a clip. [0068]FIG. 3 shows a third embodiment of the present invention. In a clip unit 41 of this embodiment, the configuration of the hold member 6 in the holder tube 5 is modified as described below. That is, in the hold member 6 of this embodiment, a solid part 42 is placed in the rear end side in the holder tube 5. And, a cylindrical part 44 formed with a hollow part 43 at the axial center is placed nearer to the front end than the solid part 42. [0069] Now, explanation will be given on the function of this embodiment configured as described above. In the clip unit 41 of this embodiment, the base ring 3 a contacts the cylindrical part 44 of the hold member 6 in the holder tube 5 in the clip opening operation area to expand the clip hands 3 c when pulling the connection member 4 toward the side close to hand when operating a clip. Thus, it is possible to decrease the resisting effect by the hold member 6 applied to the resisting force to the operation of pulling the connection member 4 toward the side close to hand. [0070] In the closing operation area to close the clip hands 3 c when operating a clip, the base ring 3 a contacts the solid part 42 of the hold member 6 (at the position L2 in FIG. 3). Thus, after the position L2 where the base ring 3 a contacts the solid part 42 of the hold member 6, the resisting effect by the hold member 6 applied to the resisting force to the operation of pulling the connection member 4 toward the side close to hand can be increased. [0071] In the above configuration, it is possible to decrease the resisting effect in the clip opening operation area to expand the clip hands 3 c when operating a clip, and increase the resisting effect in the clip closing operation area to close the clip hands 3 c to larger than in the clip opening operation area. Thus, in this embodiment as in the first embodiment, it is possible to certainly stop the clip hands 3 c at the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip, and increase ease of operating a clip. [0072] Further, particularly in this embodiment, since the cylindrical part 44 of the hold member 6 is placed in the front end side in the holder tube 5, it is possible to hold the base end part of the base ring 3 a of the clip 3 in the state being contacted to the cylindrical part 44, even while the clip unit 41 is not closed. Thus, the connected part of the base ring 3 a and connection member 4 can be held by the cylindrical part 44 at the front end of the holder tube 5, and the clip unit 41 can be stably held. [0073] Further, since the hold member 6 is placed in the front end side in the holder tube 5, the frictional resistance between the holder tube 5 and clip 3 increases through the hold member 6, in the state the clip unit 41 is closed. Thus, when clipping a living tissue, the clip 3 is hard to separate from the holder tube 5, and a living tissue can be held tightened. [0074]FIG. 4 shows a fourth embodiment of the present invention. In a clip unit 51 of this embodiment, the configuration of the hold member 6 in the holder tube 5 is modified as described below. That is, the hold member 6 of this embodiment has a first hold member 52 with high hardness, and a second hold member 53 with lower hardness than the first hold member 52. The second hold member 53 is placed in the front end side in the holder tube 5, and the first hold member 52 is placed in the rear end side. The hardness of the first and second hold members 52 and 53 can be appropriately adjusted by changing an additive of a filling material such as silicone, or by changing the method of kneading the filling material such as silicone. [0075] Now, the function of the above configuration will be explained. In the clip unit 51 of this embodiment, the base ring 3 a contacts the low hardness soft hold member 53 placed in the front end side in the holder tube 5 in the clip opening operation area to expand the clip hands 3 c when pulling the connection member 4 toward the side close to hand when operating a clip. Thus, it is possible to increase the resisting effect by the hold member 53 applied to the resisting force to the operation of pulling the connection member 4 toward the side close to hand. [0076] In the clip closing operation area to close the clip hands 3 c when operating a clip, the base ring 3 a contacts the high hardness hold member 52 placed in the rear end side in the holder tube 5. Thus, thereafter, it is possible to increase the resisting effect by the hold member 52 applied to the resisting force to the operation of pulling the connection member 4 toward the side close to hand. [0077] In the above configuration, it is possible to decrease the resisting effect in the clip opening operation area to expand the clip hands 3 c when operating a clip, and increase the resisting effect in the clip closing operation area to close the clip hands 3 c to larger than in the clip opening operation area. Thus, in the clip unit 51 of this embodiment as in the first embodiment, it is possible to certainly stop the clip hands 3 c at the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip, and increase ease of operating a clip. [0078] Further, in the clip unit 51 of this embodiment, the soft hold member 53 is placed in the front end side in the holder tube 5. Thus, it is possible to hold the base end part of the base ring 3 a of the clip 3 in the state being contacted to the soft hold member 53, even while the clip unit 51 is not closed. Therefore, in the clip unit 51 of this embodiment, the connected part of the base ring 3 a and connection member 4 can be held by the soft hold member 53 at the front end of the holder tube 5, and the clip unit 51 can be stably held, as in the third embodiment (refer to FIG. 3). [0079] Further, since the hold member 53 is placed in the front end side in the holder tube 5, the frictional resistance between the holder tube 5 and clip 3 increases through the hold member 53 in the state. The clip unit 51 is closed. Thus, when clipping a living tissue, the clip 3 is hard to separate from the holder tube 5, and a living tissue is held tightened. [0080] FIG. S shows a fifth embodiment of the present invention. In a clip unit 61 of this embodiment, the hold member 6 is placed only in the front end side in the holder tube 5 (between L11 and L12). That is, the hold member 6 is placed in a range of 50% of the total length of the holder tube 5 from the front end surface of the holder tube 5, position L11, for example, in a range of 1-2 mm from the front end of the holder tube 5 whose total length is 4-5 mm. [0081] Now, the function of the above configuration will be explained. In a clip unit 61 of this embodiment, the amount of the hold member 6 placed in the holder tube 5 can be decreased. Thus, it is possible to decrease the resisting effect by the hold member 6 occurred during the operation of pressing the base ring 3 a to fit into the holder tube 5 by pulling the connection member 4 toward the side close to hand. Thus, only the operating force required to plastically deform the clip 3 when press fitting the base ring 3 a when pulling the connection member 4 toward the side close to hand can be effected as a resisting force. Therefore, it is possible to increase the difference in the operating force between the clip opening operation area and clip closing operation area, while pressing the base ring 3 a to fit into the holder tube 5 by pulling the connection member 4 toward the side close to hand. [0082] In the above configuration, by the difference in the operating force between the clip opening operation area and clip closing operation area, it is possible to certainly stop the clip hands 3 c by the operator's operation sense in the state expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip. Therefore, it is prevented that the connection member 4 is pulled toward the side close to hand exceeding the position where the clip hands 3 c are expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand. [0083] Further, particularly in the clip unit 61 of this embodiment, the hold member 6 is placed only in the front end side in the holder tube 5. Thus, it is possible to hold the base end part of the base ring 3 a of the clip 3 in the state being contacted to the hold member 6, even while the clip unit 61 is not closed. Thus, the connected part of the base ring 3 a and connection member 4 can be held by the hold member 6 at the front end of the holder tube 5, and the clip unit 61 can be stably held as in the third embodiment (refer to FIG. 3). [0084] Further, since the hold member 6 is placed in the front end side in the holder tube 5, the frictional resistance between the holder tube 5 and clip 3 increases through the hold member 6 in the state the clip unit 61 is closed. Thus, when clipping a living tissue, the clip 3 is hard to separate from the holder tube 5, and a living tissue is held tightened. [0085]FIGS. 6A and 6B show a sixth embodiment of the present invention. In a clip unit 71 of this embodiment, the hold member 6 is placed only in the tapered surface 5 a of the holder tube 5, as shown in FIG. 6B. [0086] In the clip unit 71 of this embodiment, the amount of the hold member 6 placed in the holder tube 5 can be further decreased. Thus, it is possible to further decrease the resisting effect by the hold member 6 occurred while pressing the base ring 3 a to fit into the holder tube 5 by pulling the connection member 4 toward the side close to hand. Therefore, only the operating force required to plastically deform the clip 3 when press fitting the base ring 3 a when pulling the connection member 4 toward the side close to hand, can be applied as a resisting force. As a result, it is possible to increase the difference in the operating force between the clip opening operation area and clip closing operation area, while pressing the base ring 3 a to fit into the holder tube 5 by pulling the connection member 4 toward the side close to hand. [0087] Therefore, in this embodiment as in the fifth embodiment (refer to FIG. 5), it is easy to certainly stop the clip hands 3 c by the operator's operation sense in the state expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip. Therefore, it is prevented that the connection member 4 is pulled toward the side close to hand exceeding the position where the clip hands 3 c are expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand. [0088] Further, particularly in the clip unit 71 of this embodiment, since the hold member 6 is placed only in the tapered surface 5 a in the holder tube 5, it is possible to hold the base end part of the base ring 3 a of the clip 3 in the state being contacted to the hold member 6, even while the clip unit 71 is not closed. Thus, the connected part of the base ring 3 a and connection member 4 can be held by the hold member 6 at the front end of the holder tube 5, and the clip unit 71 can be stably held as in the third embodiment (refer to FIG. 3). [0089]FIG. 7 shows a seventh embodiment of the present invention. In a clip unit 81 of this embodiment, the hold member 6 is made of soft flexible material. For example, hardness of the soft flexible material of the hold member 6 is set to 40 degree or lower. [0090] In the clip unit 81 of this embodiment, by placing the hold member 6 made of soft flexible material in the holder tube 5, it is possible to decrease the resisting effect by the hold member 6 occurred while pressing the base ring 3 a to fit into the holder tube 5 by pulling the connection member 4 toward the side close to hand. Thus, by effecting only the operating force required to plastically deform the clip 3 when press fitting the base ring 3 a when pulling the connection member 4 toward the side close to hand as a resisting force, the difference in the operating force between the clip opening operation area and clip closing operation area, while press fitting the base ring into the holder tube 5 by pulling the connection member 4 toward the side close to hand. [0091] As a result, it is easy to certainly stop the clip hands 3 c by the operator's operation sense in the state expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand when operating a clip. Therefore, it is prevented that the connection member 4 is pulled toward the side close to hand exceeding the position where the clip hands 3 c are expanded to the maximum expanded position when pulling the connection member 4 toward the side close to hand. [0092] Further, in the clip unit 81 of this embodiment, it is possible to hold the base end part of the base ring 3 a of the clip 3 in the state being contacted to the hold member 6 even while the clip unit 81 is not closed. Thus, the connected part of the base ring 3 a and connection member 4 can be held by the hold member 6, and the clip unit 81 can be stably held as in the third embodiment (refer to FIG. 3). [0093] Further, since the hold member 6 is placed in the front end side in the holder tube 5, the frictional resistance between the holder tube 5 and clip 3 increases through the hold member 6 in the state the clip unit 81 is closed. Thus, when clipping a living tissue, the clip 3 is hard to separate from the holder tube 5, and a living tissue is held tightened. [0094] The present invention is not to be limited by the above-mentioned embodiments. For example, though the hold member 6 is placed only in the tapered surface 5 a of the holder tube 5 in the clip unit 71 of the sixth embodiment (refer to FIGS. 6A and 6B), it is also permitted to provide the hold member 6 in a thin film state all over the inner circumference surface of the holder tube 5, or to provide the hold member 6 in a part of the inner circumference surface of the holder tube 5. [0095] Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8551119 *Dec 22, 2005Oct 8, 2013Olympus CorporationLigation apparatusUS8597312 *Jun 5, 2006Dec 3, 2013Boston Scientific Scimed, Inc.Blunt needles with means for locating and occluding vessels* Cited by examinerClassifications U.S. Classification606/158International ClassificationA61B19/00, A61B17/128, A61B17/12, A61B17/064, A61B17/122Cooperative ClassificationA61B2019/2292, A61B17/1285, A61B17/122, A61B17/0643European ClassificationA61B17/122, A61B17/128ELegal EventsDateCodeEventDescriptionFeb 19, 2014FPAYFee paymentYear of fee payment: 8Mar 3, 2010FPAYFee paymentYear of fee payment: 4Jan 16, 2004ASAssignmentOwner name: OLYMPUS CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KOBAYASHI, TSUKASA;REEL/FRAME:014921/0608Effective date: 20031226RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google