Medical apparatus and living tissue freezing and harvesting apparatus
View Patent ↗A first trocar as an medical apparatus includes an insertion hole having a projection opening for leading out a biopsy forceps into a body of a subject, a lid body for blocking the projection opening of the insertion hole, and a cooling sheet for cryogenically cooling a biopsy portion arranged in the vicinity of the lid body in a state where the biopsy forceps is stored in the insertion hole, and is capable of easily harvesting a living tissue while retaining morphological change of tissues in a living body under various hemodynamics.
1. A medical apparatus comprising:
a biopsy treatment instrument to be introduced into a body of a subject, for performing a biopsy on a predetermined region; and
a medical trocar including:
a biopsy treatment instrument insertion path through which the biopsy treatment instrument is inserted,
a projection opening for leading out the biopsy treatment instrument into the body of the subject in a predetermined region,
a blockage body for blocking the projection opening, and
a cooling member, arranged in the vicinity of the blockage body, for cryogenically cooling a biopsy portion of the biopsy treatment instrument stored in the biopsy treatment instrument insertion path.
2. The medical apparatus according to claim 1 , wherein the medical trocar instrument includes a heat-insulating portion.
3. The medical apparatus according to claim 1 , wherein the cooling member includes a cryogenic fluid supplying device for circulating cryogenic fluid.
4. The medical apparatus according to claim 1 , wherein the cooling member is a peltier element.
5. A medical apparatus comprising:
a biopsy treatment instrument to be introduced into a body of a subject for performing a biopsy on a predetermined region by a pair of biopsy cups operable to be opened and closed; and
a medical trocar including:
a trocar main body having a cylindrical shape with openings at distal and proximal ends to include an elongated hole formed therein,
a rigid distal end portion, provided at the distal end of the trocar main body, including a through hole through which the biopsy treatment instrument passes,
a lid body, provided at the distal end portion for blocking the through hole, and penetrated by the biopsy cups by moving the biopsy treatment instrument,
a cooling cylinder, inserted into the elongated hole of the trocar main body, including an insertion hole communicating with the through hole of the distal end portion, and
a cooling member in the form of a sheet arranged in a cooling groove formed between the trocar main body and the cooling cylinder inserted into the trocar main body.
6. The medical apparatus according to claim 5 , wherein the biopsy cups contact an inner circumferential surface of the cooling cylinder where the cooling groove is formed.