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Living tissue harvesting apparatus

a technology of living tissue and harvesting apparatus, which is applied in the field of living tissue harvesting apparatus, can solve the problems of affecting the survival of living tissues, so as to achieve the effect of safe holding of living tissues and easy cutting of living tissues

Inactive Publication Date: 2006-09-21
OLYMPUS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a living tissue harvesting apparatus that can safely hold and cut living tissues without obstructing the observation view field. The apparatus includes a sheath, an endoscope, a cutting device, and a holder with a press discharge portion to detach the harvesting object tissue from the cutting device. The holder also has a hook portion to catch the living tissue in a position opposite to the cutting device. The apparatus can hold the harvested tissue in a tissue-holding space that can be opened and closed.

Problems solved by technology

Therefore, when the blood vessel C is pushed in a front surface direction of the view field in this state, the blood vessel C is bent, and rises on the back side of the side branch F. At this time, the incision forceps are projected forwards to cut the side branches F, and the blood vessel C which has risen may be damaged by mistake.
Therefore, also in this case, the blood vessel C may be damaged by mistake.
Since all the side branches F branched from the blood vessel C are searched under the endoscope and cut one by one in the above-described great saphenous vein extraction system, it takes considerable time to extract the blood vessel C. Moreover, to cut the side branches F, the side branches F cannot be held by the loop portion.
Therefore, there is possibility that the treatment is performed in the unstable state.
In this case, the blood vessel C may be damaged.

Method used

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Examples

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first embodiment

[0124]FIG. 1 shows an endoscopic blood vessel harvesting apparatus as a living tissue harvesting apparatus in which a holder (blood vessel holder) according to the present invention is incorporated. This apparatus is constituted of a trocar 1, treatment sheath 2, dissector 3 as expansion means, and rigid endoscope 4 as an endoscope.

[0125] As shown in FIGS. 2A and 2B, the trocar 1 is integrally molded of a synthetic resin material, and a cylindrical guide tube 6 is obliquely inserted through a substantially disc-shaped flange 5. The inner and outer surfaces of the guide tube 6 are coated with a lubricant in order to improve slip at an insertion time. A tip end 6a of the guide tube 6 is cut at an acute angle, and the end surface of the tip end 6a is formed substantially in parallel to the flange 5.

[0126] Furthermore, an airtight ring portion 7 is integrally disposed in an inner peripheral surface in a base end of the guide tube 6, and an air supply head 8 is integrally disposed in a ...

second embodiment

[0229]FIG. 65 shows a first modification example of the blood vessel holder 21 according to the In this modification example, the shaft portion 350 moves forwards / backwards with respect to the sheath main unit 10, and the holding rod 113 is fixed to the sheath main unit 10. It is to be noted that other constitutions are the same as those of the above-described embodiment, and are therefore denoted with the same reference numerals and the description thereof is omitted.

[0230] Even with the structure, since the space S can openably be closed, the function / effect similar to that of the above-described embodiment can be obtained.

[0231]FIGS. 66A and 66B show a second modification example of the blood vessel holder 21. The main unit 21a of the blood vessel holder 21 according to this modification example is formed by tip-end holding members 230, 232 of a pair of elastic holding rods 116 which move forwards / backwards in the sheath main unit 10. In this case, the tip-end holding members 2...

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PUM

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Abstract

There is disclosed a living tissue harvesting apparatus according to one aspect of the present invention, comprising a sheath which can be inserted in a body through a cut skin portion, an endoscope inserted through the sheath, a cutting device which is disposed at the sheath and which can cut a living tissue, and a holder which is disposed at the sheath to hold a harvesting object tissue in the body and which includes a press discharge portion to press-discharge the harvesting object tissue in a direction detached from the cutting device, wherein the holder includes a hook portion to catch the living tissue in a position disposed opposite to the cutting device, and the cutting device and hook portion can move with respect to each other.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation under 37 C.F.R. §1.53(b) of prior application Ser. No. 10 / 329,947, filed Dec. 24, 2002, by Hideyuki KASAHARA et al. entitled LIVING TISSUE HARVESTING APPARATUS and is based upon and claims the benefit of priority from the prior Japanese Applications No. 2001-401940, filed Dec. 28, 2001, No. 2002-116512, filed Apr. 18, 2002; and No. 2002-161572, filed Jun. 3, 2002, the entire contents of all of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a living tissue harvesting apparatus which harvests living tissues, for example, subcutaneous blood vessels such as a great saphenous vein under observation of an endoscope, particularly to an improvement of a holder assembled in this living tissue harvesting apparatus. [0004] 2. Description of the Related Art [0005] A cannula and surgical method for use in drawing and ha...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B1/00A61B17/00A61B17/02A61B17/34A61B18/14A61B19/00
CPCA61B17/00008A61B17/0218A61B18/1442A61B18/1482A61B2017/3445A61B2017/3492A61B2018/00345A61B2018/00404A61B2018/00589A61B2018/00601A61B2018/126A61B2018/1425A61B2018/1497A61B2019/5206A61B2019/5217A61B2218/005A61B2090/3614A61B2090/306
Inventor KASAHARA, HIDEYUKIKOGASAKA, TAKAHIROIIZUKA, SHUHEIIRIE, MASAYUKI
Owner OLYMPUS CORP
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