ENDO BIOPSY FORCEPS PDF

The equilibrium temperature in the hole of the endoscope biopsy forceps is about 2500☌, and the heat is transferred from the outer wall of the high temperature hole to melt the metal around the hole. The steam-filled hole acts like a black body, absorbing almost all the energy of the incoming beam of the endoscopic biopsy forceps. The endoscopic biopsy forceps are irradiated with a sufficiently high power density laser to vaporize the material and form pores. The energy conversion mechanism is achieved through a 'pinhole' structure. By controlling the laser parameters such as the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Laser radiation heats the surface to be processed, and the surface heat diffuses to the interior through thermal conduction. The endoscopic biopsy forceps are mainly connected by laser welding, and laser welding can be realized by continuous or pulsed laser beams. The endoscopic biopsy forceps according to claim 22, wherein each drive lever is formed in a-generally U-shaped cross section continuous from the boundary.Endoscopic biopsy forceps are available in various types, such as round cup shape, tooth cup shape, standard type, side opening type, and tip with needle type. A61B2017/294- Connection of actuating rod to jaw, e.g.A61B2017/2939- Details of linkages or pivot points.A61B2017/2932- Transmission of forces to jaw members.A61B2017/2926- Details of heads or jaws.A61B17/29- Forceps for use in minimally invasive surgery.A61B17/00- Surgical instruments, devices or methods, e.g.A61B10/02- Instruments for taking cell samples or for biopsy.instruments for taking a cell sample, for biopsy, for vaccination diagnosis Sex determination Ovulation-period determination Throat striking implements A61B10/00- Other methods or instruments for diagnosis, e.g.A61B- DIAGNOSIS SURGERY IDENTIFICATION.

A61- MEDICAL OR VETERINARY SCIENCE HYGIENE.

Assignors: PENTAX CORPORATION Assigned to HOYA CORPORATION reassignment HOYA CORPORATION CHANGE OF ADDRESS OF ASSIGNEE Assignors: HOYA CORPORATION Adjusted expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA Publication of US6554850B1 publication Critical patent/US6554850B1/en Application granted granted Critical Assigned to HOYA CORPORATION reassignment HOYA CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). Assignors: OUCHI, TERUO, NAGAMINE, MASARU Assigned to PENTAX CORPORATION reassignment PENTAX CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from JP11-250068 external-priority Priority claimed from JP25006899A external-priority patent/JP3569469B2/en Priority claimed from JP25393199A external-priority patent/JP3650549B2/en Priority claimed from JP25514699A external-priority patent/JP3650550B2/en Application filed by Pentax Corp filed Critical Pentax Corp Assigned to ASAHI KOGAKU KOGYO KABUSHIKI KAISHA reassignment ASAHI KOGAKU KOGYO KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Pentax Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime, expires Application number US09/654,521 Inventor Teruo Ouchi Masaru Nagamine Current Assignee (The listed assignees may be inaccurate.

ENDO BIOPSY FORCEPS PDF

Google Patents Endoscopic biopsy forcepsĭownload PDF Info Publication number US6554850B1 US6554850B1 US09/654,521 US65452100A US6554850B1 US 6554850 B1 US6554850 B1 US 6554850B1 US 65452100 A US65452100 A US 65452100A US 6554850 B1 US6554850 B1 US 6554850B1 Authority US United States Prior art keywords forceps wire endoscopic biopsy drive levers sheath Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6554850B1 - Endoscopic biopsy forceps

Endo biopsy forceps