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58 results about "Endoscopic biopsy" patented technology

Endoscopic biopsy apparatus

InactiveCN105943091AChange misuseChanging the risk of safety hazardsSurgical needlesVaccination/ovulation diagnosticsAspiration biopsyEngineering
The invention discloses an endoscopic biopsy apparatus which comprises a handle assembly, an outer tube, a limiting piece, a needle tubing and an inner core wire. The handle assembly is composed of an adjustment handle, an outer tube handle, a limiting ring, an operation handle, a scale core rod, a needle tubing operation handle and an inner core wire control handle. The adjustment handle, the limiting ring and the operation handle are all arranged on the scale core rod and connected into a whole through the scale core rod. The outer tube handle is arranged in the adjustment handle and connected with the outer tube. The outer tube is connected with the scale core rod. The needle tubing operation handle is connected with the operation handle in a screwed mode. The operation handle is connected with the limiting piece in an inserted mode. The needle tubing is composed of a needle point section at the far end and a needle body section behind the needle point section. The needle tubing is located in the outer tube. The needle point section penetrates out of the far end of the outer tube. The needle body section is fixedly connected with the needle tubing operation handle. The inner core wire penetrates into the needle tubing. The far end of the inner core wire goes beyond the needle point end, and the near end of the inner core wire is connected with the inner core wire control handle. The biopsy operation is greatly simplified, the success rate and safety of operation are improved, operators can be easily trained, and wide promotion is easy.
Owner:NANJING FMT MEDICAL

Manipulator-type endoscopic biopsy forceps

InactiveCN104771195ARealize sampling without blind spots in the whole field of viewPrecise positioningSurgeryVaccination/ovulation diagnosticsPhysical medicine and rehabilitationForceps
A pair of manipulator-type endoscopic biopsy forceps relates to instruments and equipment for medical diagnosis, in particular to a pair of living tissue sampling forceps used for endoscopic examination and endoscopic surgery. The pair of manipulator-type endoscopic biopsy forceps comprises a forceps head, a control steel cable, a flexible outer pipe and an operating rod, as well as a manipulator consisting of both a swinging arm joint and a swinging arm, wherein the swinging arm joint is a slider crank mechanism consisting of a swinging arm base, a rotary base, a slider and a connecting rod; the swinging arm base, a swinging arm shaft and a connecting rod shaft constitute a crank of the slider crank mechanism; the rotary base is connected to a fixed base; the fixed base is connected to the operating rod through a flexible inner pipe; axial sliding of a swinging arm operation slip ring relative to the operating rod is conveyed to the slider of the slider crank mechanism through the flexible outer pipe; and the slider is connected to the swinging arm base through the connecting rod, drives the swinging arm base to rotate on the swinging arm shaft and also drives the swinging arm and the forceps head to swing around the swinging arm shaft. As the manipulator drives the forceps head to swing, and the forceps head rotates around the axis along with the rotary base, 360-degree all-view no-blind-area sampling around the axis of the fixed base can be realized.
Owner:SHANGHAI TONGJI HOSPITAL

Endoscopic device for multiple sample biopsy

The present invention relates in one aspect to an endoscopic biopsy device (1, 2) for collecting multiple samples (10x). The endoscopic biopsy device comprises a tubular body (10) having in an axial direction a distal end and a proximal end, jaws (20, 21, 22) that are hinged to the distal end of the body, wherein the jaws are operable between an OPEN position and a CLOSED position to secure a tissue sample (100), and wherein the jaws in the CLOSED position define a sampling chamber (23); a collecting chamber (13) for receiving multiple samples, the collecting chamber being located within the body in an axial direction proximally adjacent to the sampling chamber; and an axially extending collecting member (30) for transfixing secured samples, the collecting member being axially displaceable between a retracted position in the collecting chamber and a deployed position where the collecting member penetrates into the sampling chamber. The jaws comprise retaining elements (40, 41, 42) arranged to project radially inward on a proximal portion of the jaws. The retaining elements engage when the jaws are in the CLOSED position, thereby separating the sampling chamber and the collecting chamber from each other. The retaining elements disengage when the jaws are in the OPEN position, thereby providing a passage for the transfer of transfixed samples into and out of the collecting chamber.
Owner:BIOSCOPEX APS

Push-pull type sterile cell brush provided with replaceable brush head for endoscope

The invention discloses a push-pull type sterile cell brush provided with a replaceable brush head for an endoscope. The push-pull type sterile cell brush comprises a drainage tube, the brush head, a push-puller and a traction fiber, wherein the brush head is connected to the head of the drainage tube in a detachable way; a cell brush is arranged in the brush head; an opening is formed in the end, far away from the drainage tube, of the brush head; the traction fiber penetrates into the drainage tube, one end of the traction fiber is connected with the cell brush in a detachable way, and the other end of the traction fiber is connected with the push-puller; the cell brush is externally provided with a protective film; the head of the protective film is connected with the brush head, and the tail of the protective film is connected with the tail of the cell brush. The internal cell brush can be used for brushing bacteria living specimens and / or cell samples of an intestinal mucosal surface layer in a living intestinal cavity wall under the condition of being in conjunction with the drainage tube and the push-puller; furthermore, with the protection of the protective film, bacteria / cell brush pollution caused by the pollution to a channel of endoscopic biopsy forceps can be avoided. After the push-pull type sterile cell brush is used, the sterile cell brush head can be replaced, so that the cell brush can be repeatedly used in a germ-free condition; therefore, the collection credibility of samples of all intestinal tract parts can be maintained to the utmost extent while the cost is lowered.
Owner:JIANGSU PROVINCE HOSPITAL THE FIRST AFFILIATED HOSPITAL WITH NANJING MEDICAL UNIV +1

Rigid-flexible integrated crawling actuator applied to narrow cavity and working method of rigid-flexible integrated crawling actuator

The invention discloses a rigid-flexible integrated crawling actuator applied to a narrow cavity and a working method of the rigid-flexible integrated crawling actuator, relates to the technical fieldof piezoelectricity, can move forwards and backwards in a bent narrow cavity, and is high in precision and quick in response. The rigid-flexible integrated crawling actuator comprises a flexible connecting beam, piezoelectric ceramic pieces and rigid feet. The two ends of the flexible connecting beam are connected with the rigid feet respectively, and the piezoelectric ceramic pieces are arrangedon the upper surfaces of the rigid feet. According to the invention, the flexibility of the flexible connecting beam provides driving pre-pressure for the actuator in the narrow cavity and enables the actuator to move in the narrow cavity with complex bending through flexible connection; and then forward or backward movement of the actuator is achieved through asymmetric friction force generatedduring vibration driving of the rigid feet based on the inverse piezoelectric effect of the piezoelectric ceramic pieces. The actuator is simple and compact in structure, concise and direct in actuation flow, capable of shortening the time used in the actuation process and high in reaction speed, and thus the function of rapid and accurate movement of the actuator in the narrow bent cavity (such as a medical endoscope biopsy channel) can be achieved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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