专

模拟经直肠前列腺穿刺的教学模型

12610129067A1

发明人

程继文, 张春燕, 潘灵辉, 林源, 阳志军, 赵盛发, 张庆云, 麻成忠, 吴尔岸, 银河, 梁武, 蒙清贵, 李航, 白先忠

受让人

程继文

申请人

Justin Lawyer

申请号

06342

申请日

1992-10-22

公开(公告)号

12610129067A1

公开(公告)日

1993-02-28

IPC分类号

G06F021/32G06Q010/08

CPC分类号

优先权号

266553

304451

优先权日

2001-09-02

2001-09-27

摘要

A helmet features an inner shell, a non-rigid outer shell surrounding the inner shell in outwardly spaced relation therefrom, and a plurality of impact absorbing layers disposed between the shells. Each impact absorbing layer features an envelope, and a plurality of impact absorbing members disposed internally within said envelope. At least one adjacent pair of impact absorbing layers are displaceable relative to one another to enable impact-driven shifting between the adjacent pair, whereby impact energy is absorbed by the impact absorbing members within the impact absorbing layers, and absorbed and/or redirected by the impact-driven shifting between the adjacent absorbing layers. Resiliently stretchable material is attached to the adjacent layers at discrete locations such that, after being stretched by the relative shifting, the material returns to a relaxed state to reset the shifted layers back into a default positional relationship, in which ventilation passages in the absorbing layers are aligned.

权利要求

1. A method for determining blood velocity in a conjunctiva of an eye, comprising: acquiring a series of temporal frames with registered images of at least one vessel in the conjunctiva of the eye, wherein the registered images are registered to compensate for eye motion; identifying at least one blood cell present in each of a plurality of frames; calculating blood velocity within the vessel based on a distance travelled by the blood cell in the vessel between frames; and compensating for involuntary target movement by tracking eye movements.

2. The method of claim 1 , wherein the step of acquiring the images further comprises illuminating the conjunctiva of the eye with light having a wavelength in a range of about 500 nm to 560 nm.

3. The method of claim 1 further comprising determining blood flow in the blood vessel by: obtaining a two-dimensional image of the vessel in the conjunctiva of the eye; determining dimensions of the vessel from the two-dimensional image; and calculating blood flow within the vessel based on blood cell velocity and blood vessel dimensions.

4. A hemodynamics measurement apparatus comprising: a light source configured to project radiation onto a target tissue; optics configured to image at least one vessel in the tissue; a detector to capture a series of temporal images of the vessel; a processor to calculate blood flow dynamics in the vessel from the series of images; and an eye tracking mechanism that compensates for involuntary movement of the eye from one temporal image to another, wherein the apparatus is configured to image at least one blood vessel in the conjunctiva of a subject's eye.

5. The apparatus of claim 4 , wherein the apparatus further comprises a biomicroscope.

6. The apparatus of claim 4 , wherein the light source generates light of at least one wavelength in the range of about 450 to 600 nm.

7. The apparatus of claim 6 , wherein the light source generates light at a wavelength in a range from about 500 nm to about 600 nm.

8. The apparatus of claim 7 , wherein the light source generates light at a wavelength in a range from about 500 nm to about 560 nm.

9. The apparatus of claim 4 , wherein the eye tracking mechanism is configured to detect changes in pupil position.

10. The apparatus of claim 4 , wherein the detector comprises a camera.

11. The apparatus of claim 10 , wherein the camera is a charge-coupled device (CCD).

12. The apparatus of claim 10 , wherein the apparatus further comprises a camera controller configured to acquire a plurality of images over a time interval.

13. The apparatus of claim 12 , wherein the camera controller is configured to acquire images at least 40 Hz.

14. The apparatus of claim 4 , wherein the detector is configured to acquire two-dimensional images.

15. The apparatus of claim 4 , wherein the apparatus is a handheld apparatus.

说明书

[0001]FIG. 1 is a perspective view of a water toy handle of the present design; FIG. 2 is a right side view thereof; FIG. 3 is a left side view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a front view thereof; FIG. 6 is a bottom view thereof; and, FIG. 7 is a top view thereof. The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.

同族专利

暂无同族专利