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Bearing device for medical appliance and medical appliance

A technology for bearing devices and medical instruments, which is applied to shafts and bearings, bearing components, surgical instruments, etc., can solve the problems that the manufacturing of guiding components is proved to be complicated, and achieve the effects of reducing manufacturing costs, improving life, and dimensional stability and safety.

Inactive Publication Date: 2010-06-16
SCHAEFFLER TECH AG & CO KG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The manufacture of the guide element has proven to be relatively complex for such a bearing arrangement as described in the opening text
In addition, the guide elements cannot ensure an optimal mounting flexibility in every case and thus a completely reliable functionality in every use and operating situation of the device

Method used

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  • Bearing device for medical appliance and medical appliance
  • Bearing device for medical appliance and medical appliance
  • Bearing device for medical appliance and medical appliance

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] figure 1 Shown is a medical device 1 in the form of an esophageal cutting device, which is guided into the patient's esophagus 2 through the mouth as shown schematically and is positioned such that the tumor to be removed is at the top 4 of the device and parenchymal cutting device 5 between. The cutting device 5 comprises an annular cutting edge 6 formed by a correspondingly sharpened end 7 of a cap-shaped cutting element 8 .

[0023] The cutting element 8 is on one side with the figure 1 The inner ring 10 of the axially inclined ball bearing 12 , which is only schematically shown in FIG. The outer ring 14 is connected to the plastic connection 15 by extrusion coating. Centering on the longitudinal axis 16, a guide sleeve 18 is arranged, in which two guide grooves (in figure 1 Only one guide groove 20 can be seen in . Cooperating with the guide groove 20 are guide elements for the bearing inner ring 10 , which will be described in more detail below, so that the sl...

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PUM

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Abstract

The invention relates to a bearing device for a medical appliance (1) and a medical appliance. The bearing device comprises a ball bearing (12) which has an outer bearing ring (14) and an inner bearing ring (10), wherein the inner bearing ring (10) bears a blade (6) and is provided with guiding elements (40, 41) which extend into an inner ring opening (35); and the guiding elements (40, 41) are coordinated with a guiding device (21) so as to drive the inner bearing ring (10) to rotate relative to the outer bearing ring (14) when the ball bearing moves along the axial direction (23). In order to endow stronger load-bearing capacity to the bearing device and promote the flexibility and the reliability of the bearing by using a simple manufacturing technique, the guiding elements (40, 41) are designed into bearing needles (30, 31), and partial lengths of the bearing needles are arranged in radial holes (28, 29) of the inner bearing ring (10).

Description

technical field [0001] The invention relates to a bearing device for a medical device and a medical device with the bearing device. Background technique [0002] Bearing arrangements of this type include, for example, ball bearings with a bearing outer ring and a bearing inner ring, wherein the bearing inner ring carries the cutting edge and has guide elements which extend into the opening of the inner ring and cooperate with guide devices so that the shaft of the ball bearing The relative rotation of the inner ring of the bearing relative to the outer ring of the bearing is caused by the direction movement. Such a function of the bearing device disclosed internally by the applicant, for example as an endoscopic instrument, is extended to such an extent that the endoscopic instrument is designed for separating and removing tissue. [0003] In such endoscopic instruments, there is provided a head with an anvil onto which a sleeve-like cap-shaped cutting element can be moved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/00A61B17/94F16C35/12
Inventor 约尔格·鲍尔彼得·梅莱尔马蒂亚斯·施佩伯王海鹏
Owner SCHAEFFLER TECH AG & CO KG
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