Celiac injector
AssigneeOlympus Optical Co., Ltd.
InventorToshiki Terayama
Life of this patent
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Abstract
Disclosed is a celiac injector introduced into a body cavity by means of an endoscope, thereby injecting a medical fluid into desired celiac tissue, in which a medical fluid supply tube with an injector needle fixed to the tip end thereof and an elongated member fitted at its tip end with a plurality of claw wire elements are relatively slidably housed in an outer sheath. By manual operations of the respective proximal end portions of the supply tube and elongated member, the claw wire elements take hold of a tissue portion at a desired part, the needle is stabbed into the held tissue portion, and the medical fluid supplied through the supply tube is injected into the tissue by means of the injector needle.
Claims9
In a celiac injector introduced into a body cavity by means of an intra-celiac medical instrument such as an endoscope, whereby a medical fluid is injected into celiac tissue, of the type having:
- a flexible, elongated outer sheath with an open distal end;
- a flexible medical fluid supply tube with a proximal end through which the medical fluid is introduced and capable of sliding in said outer sheath;
- an injector needle mounted on the distal end of said supply tube;
- a needle driving means connected with the proximal end of said supply tube so that said supply tube may slide relatively to said outer sheath, thereby projecting said injector needle from the open distal end of said outer sheath;
- the improvement which comprises
- a drive transmission member capable of moving in the longitudinal direction of said outer sheath within a space between said outer sheath and said supply tube;
- a driving means connected to the proximal end of said drive transmission member, whereby said member is moved relatively to said outer sheath and said supply tube;
- and
- a claw means connected to a distal end of said drive transmission member and capable of moving at the open distal end of said outer sheath in accordance with the operation of said driving means.
Dependencies are inferred from the claim text.